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     74 
     75 <h1><a href="compute_alpha.html">Compute Engine API</a> . <a href="compute_alpha.regionBackendServices.html">regionBackendServices</a></h1>
     76 <h2>Instance Methods</h2>
     77 <p class="toc_element">
     78   <code><a href="#delete">delete(project, region, backendService, requestId=None)</a></code></p>
     79 <p class="firstline">Deletes the specified regional BackendService resource.</p>
     80 <p class="toc_element">
     81   <code><a href="#get">get(project, region, backendService)</a></code></p>
     82 <p class="firstline">Returns the specified regional BackendService resource.</p>
     83 <p class="toc_element">
     84   <code><a href="#getHealth">getHealth(project, region, backendService, body)</a></code></p>
     85 <p class="firstline">Gets the most recent health check results for this regional BackendService.</p>
     86 <p class="toc_element">
     87   <code><a href="#insert">insert(project, region, body, requestId=None)</a></code></p>
     88 <p class="firstline">Creates a regional BackendService resource in the specified project using the data included in the request. There are several restrictions and guidelines to keep in mind when creating a regional backend service. Read  Restrictions and Guidelines for more information.</p>
     89 <p class="toc_element">
     90   <code><a href="#list">list(project, region, orderBy=None, maxResults=None, pageToken=None, filter=None)</a></code></p>
     91 <p class="firstline">Retrieves the list of regional BackendService resources available to the specified project in the given region.</p>
     92 <p class="toc_element">
     93   <code><a href="#list_next">list_next(previous_request, previous_response)</a></code></p>
     94 <p class="firstline">Retrieves the next page of results.</p>
     95 <p class="toc_element">
     96   <code><a href="#patch">patch(project, region, backendService, body, requestId=None)</a></code></p>
     97 <p class="firstline">Updates the specified regional BackendService resource with the data included in the request. There are several restrictions and guidelines to keep in mind when updating a backend service. Read  Restrictions and Guidelines for more information. This method supports patch semantics.</p>
     98 <p class="toc_element">
     99   <code><a href="#testIamPermissions">testIamPermissions(project, region, resource, body)</a></code></p>
    100 <p class="firstline">Returns permissions that a caller has on the specified resource.</p>
    101 <p class="toc_element">
    102   <code><a href="#update">update(project, region, backendService, body, requestId=None)</a></code></p>
    103 <p class="firstline">Updates the specified regional BackendService resource with the data included in the request. There are several restrictions and guidelines to keep in mind when updating a backend service. Read  Restrictions and Guidelines for more information.</p>
    104 <h3>Method Details</h3>
    105 <div class="method">
    106     <code class="details" id="delete">delete(project, region, backendService, requestId=None)</code>
    107   <pre>Deletes the specified regional BackendService resource.
    108 
    109 Args:
    110   project: string, Project ID for this request. (required)
    111   region: string, Name of the region scoping this request. (required)
    112   backendService: string, Name of the BackendService resource to delete. (required)
    113   requestId: string, begin_interface: MixerMutationRequestBuilder Request ID to support idempotency.
    114 
    115 Returns:
    116   An object of the form:
    117 
    118     { # An Operation resource, used to manage asynchronous API requests.
    119     "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
    120     "clientOperationId": "A String", # [Output Only] Reserved for future use.
    121     "creationTimestamp": "A String", # [Deprecated] This field is deprecated.
    122     "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
    123     "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only available when performing per-zone operations.
    124     "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
    125     "operationType": "A String", # [Output Only] The type of operation, such as insert, update, or delete, and so on.
    126     "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
    127     "progress": 42, # [Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
    128     "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
    129     "statusMessage": "A String", # [Output Only] An optional textual description of the current status of the operation.
    130     "status": "A String", # [Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
    131     "description": "A String", # [Output Only] A textual description of the operation, which is set when the operation is created.
    132     "warnings": [ # [Output Only] If warning messages are generated during processing of the operation, this field will be populated.
    133       {
    134         "message": "A String", # [Output Only] A human-readable description of the warning code.
    135         "code": "A String", # [Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.
    136         "data": [ # [Output Only] Metadata about this warning in key: value format. For example:
    137             # "data": [ { "key": "scope", "value": "zones/us-east1-d" }
    138           {
    139             "value": "A String", # [Output Only] A warning data value corresponding to the key.
    140             "key": "A String", # [Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
    141           },
    142         ],
    143       },
    144     ],
    145     "user": "A String", # [Output Only] User who requested the operation, for example: user (a] example.com.
    146     "startTime": "A String", # [Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
    147     "kind": "compute#operation", # [Output Only] Type of the resource. Always compute#operation for Operation resources.
    148     "name": "A String", # [Output Only] Name of the resource.
    149     "region": "A String", # [Output Only] The URL of the region where the operation resides. Only available when performing regional operations.
    150     "error": { # [Output Only] If errors are generated during processing of the operation, this field will be populated.
    151       "errors": [ # [Output Only] The array of errors encountered while processing this operation.
    152         {
    153           "message": "A String", # [Output Only] An optional, human-readable error message.
    154           "code": "A String", # [Output Only] The error type identifier for this error.
    155           "location": "A String", # [Output Only] Indicates the field in the request that caused the error. This property is optional.
    156         },
    157       ],
    158     },
    159     "endTime": "A String", # [Output Only] The time that this operation was completed. This value is in RFC3339 text format.
    160     "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
    161     "targetLink": "A String", # [Output Only] The URL of the resource that the operation modifies. For operations related to creating a snapshot, this points to the persistent disk that the snapshot was created from.
    162   }</pre>
    163 </div>
    164 
    165 <div class="method">
    166     <code class="details" id="get">get(project, region, backendService)</code>
    167   <pre>Returns the specified regional BackendService resource.
    168 
    169 Args:
    170   project: string, Project ID for this request. (required)
    171   region: string, Name of the region scoping this request. (required)
    172   backendService: string, Name of the BackendService resource to return. (required)
    173 
    174 Returns:
    175   An object of the form:
    176 
    177     { # A BackendService resource. This resource defines a group of backend virtual machines and their serving capacity.
    178       "connectionDraining": { # Message containing connection draining configuration.
    179         "drainingTimeoutSec": 42, # Time for which instance will be drained (not accept new connections, but still work to finish started).
    180       },
    181       "failoverRatio": 3.14, # The value of the field must be in [0, 1]. If set, 'backends[].failover' must be set. They together define the fallback behavior of the primary backend: if the ratio of the healthy VMs in the primary backend is at or below this number, traffic arriving at the load-balanced IP will be directed to the failover backend.
    182           #
    183           # In case where 'failoverRatio' is not set or all the VMs in the backup backend are unhealthy, the traffic will be directed back to the primary backend in the "force" mode, where traffic will be spread to the healthy VMs with the best effort, or to all VMs when no VM is healthy.
    184           #
    185           # This field is only used with l4 load balancing.
    186       "protocol": "A String", # The protocol this BackendService uses to communicate with backends.
    187           #
    188           # Possible values are HTTP, HTTPS, TCP, and SSL. The default is HTTP.
    189           #
    190           # For internal load balancing, the possible values are TCP and UDP, and the default is TCP.
    191       "loadBalancingScheme": "A String",
    192       "healthChecks": [ # The list of URLs to the HttpHealthCheck or HttpsHealthCheck resource for health checking this BackendService. Currently at most one health check can be specified, and a health check is required.
    193           #
    194           # For internal load balancing, a URL to a HealthCheck resource must be specified instead.
    195         "A String",
    196       ],
    197       "sessionAffinity": "A String", # Type of session affinity to use. The default is NONE.
    198           #
    199           # When the load balancing scheme is EXTERNAL, can be NONE, CLIENT_IP, or GENERATED_COOKIE.
    200           #
    201           # When the load balancing scheme is INTERNAL, can be NONE, CLIENT_IP, CLIENT_IP_PROTO, or CLIENT_IP_PORT_PROTO.
    202           #
    203           # When the protocol is UDP, this field is not used.
    204       "creationTimestamp": "A String", # [Output Only] Creation timestamp in RFC3339 text format.
    205       "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
    206       "cdnPolicy": { # Message containing Cloud CDN configuration for a backend service. # Cloud CDN configuration for this BackendService.
    207         "signedUrlKeyNames": [ # [Output Only] Names of the keys currently configured for Cloud CDN Signed URL on this backend service.
    208           "A String",
    209         ],
    210         "signedUrlCacheMaxAgeSec": "A String", # Number of seconds up to which the response to a signed URL request will be cached in the CDN. After this time period, the Signed URL will be revalidated before being served. Defaults to 1hr (3600s). If this field is set, Cloud CDN will internally act as though all responses from this backend had a ?Cache-Control: public, max-age=[TTL]? header, regardless of any existing Cache-Control header. The actual headers served in responses will not be altered.
    211         "cacheKeyPolicy": { # Message containing what to include in the cache key for a request for Cloud CDN. # The CacheKeyPolicy for this CdnPolicy.
    212           "includeQueryString": True or False, # If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.
    213           "includeHost": True or False, # If true, requests to different hosts will be cached separately.
    214           "queryStringBlacklist": [ # Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
    215             "A String",
    216           ],
    217           "queryStringWhitelist": [ # Names of query string parameters to include in cache keys. All other parameters will be excluded. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
    218             "A String",
    219           ],
    220           "includeProtocol": True or False, # If true, http and https requests will be cached separately.
    221         },
    222       },
    223       "enableCDN": True or False, # If true, enable Cloud CDN for this BackendService.
    224           #
    225           # When the load balancing scheme is INTERNAL, this field is not used.
    226       "affinityCookieTtlSec": 42, # Lifetime of cookies in seconds if session_affinity is GENERATED_COOKIE. If set to 0, the cookie is non-persistent and lasts only until the end of the browser session (or equivalent). The maximum allowed value for TTL is one day.
    227           #
    228           # When the load balancing scheme is INTERNAL, this field is not used.
    229       "port": 42, # Deprecated in favor of portName. The TCP port to connect on the backend. The default value is 80.
    230           #
    231           # This cannot be used for internal load balancing.
    232       "backends": [ # The list of backends that serve this BackendService.
    233         { # Message containing information of one individual backend.
    234           "group": "A String", # The fully-qualified URL of a zonal Instance Group resource. This instance group defines the list of instances that serve traffic. Member virtual machine instances from each instance group must live in the same zone as the instance group itself. No two backends in a backend service are allowed to use same Instance Group resource.
    235               #
    236               # Note that you must specify an Instance Group resource using the fully-qualified URL, rather than a partial URL.
    237               #
    238               # When the BackendService has load balancing scheme INTERNAL, the instance group must be in a zone within the same region as the BackendService.
    239           "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
    240           "maxUtilization": 3.14, # Used when balancingMode is UTILIZATION. This ratio defines the CPU utilization target for the group. The default is 0.8. Valid range is [0.0, 1.0].
    241               #
    242               # This cannot be used for internal load balancing.
    243           "failover": True or False, # This field designates whether this is a failover backend. More than one failover backend can be configured for a given BackendService.
    244           "maxRatePerInstance": 3.14, # The max requests per second (RPS) that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either balancing mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
    245               #
    246               # This cannot be used for internal load balancing.
    247           "maxConnectionsPerInstance": 42, # The max number of simultaneous connections that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either CONNECTION or UTILIZATION balancing modes. For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.
    248               #
    249               # This cannot be used for internal load balancing.
    250           "capacityScaler": 3.14, # A multiplier applied to the group's maximum servicing capacity (based on UTILIZATION, RATE or CONNECTION). Default value is 1, which means the group will serve up to 100% of its configured capacity (depending on balancingMode). A setting of 0 means the group is completely drained, offering 0% of its available Capacity. Valid range is [0.0,1.0].
    251               #
    252               # This cannot be used for internal load balancing.
    253           "maxRate": 42, # The max requests per second (RPS) of the group. Can be used with either RATE or UTILIZATION balancing modes, but required if RATE mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
    254               #
    255               # This cannot be used for internal load balancing.
    256           "maxConnections": 42, # The max number of simultaneous connections for the group. Can be used with either CONNECTION or UTILIZATION balancing modes. For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.
    257               #
    258               # This cannot be used for internal load balancing.
    259           "balancingMode": "A String", # Specifies the balancing mode for this backend. For global HTTP(S) or TCP/SSL load balancing, the default is UTILIZATION. Valid values are UTILIZATION, RATE (for HTTP(S)) and CONNECTION (for TCP/SSL).
    260               #
    261               # This cannot be used for internal load balancing.
    262         },
    263       ],
    264       "iap": { # Identity-Aware Proxy
    265         "oauth2ClientId": "A String",
    266         "enabled": True or False,
    267         "oauth2ClientSecret": "A String",
    268         "oauth2ClientSecretSha256": "A String", # [Output Only] SHA256 hash value for the field oauth2_client_secret above.
    269       },
    270       "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
    271       "customRequestHeaders": [ # Headers that the HTTP/S load balancer should add to proxied requests.
    272         "A String",
    273       ],
    274       "securityPolicy": "A String", # [Output Only] The resource URL for the security policy associated with this backend service.
    275       "fingerprint": "A String", # Fingerprint of this resource. A hash of the contents stored in this object. This field is used in optimistic locking. This field will be ignored when inserting a BackendService. An up-to-date fingerprint must be provided in order to update the BackendService.
    276       "portName": "A String", # Name of backend port. The same name should appear in the instance groups referenced by this service. Required when the load balancing scheme is EXTERNAL.
    277           #
    278           # When the load balancing scheme is INTERNAL, this field is not used.
    279       "kind": "compute#backendService", # [Output Only] Type of resource. Always compute#backendService for backend services.
    280       "name": "A String", # Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
    281       "region": "A String", # [Output Only] URL of the region where the regional backend service resides. This field is not applicable to global backend services.
    282       "timeoutSec": 42, # How many seconds to wait for the backend before considering it a failed request. Default is 30 seconds.
    283       "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
    284     }</pre>
    285 </div>
    286 
    287 <div class="method">
    288     <code class="details" id="getHealth">getHealth(project, region, backendService, body)</code>
    289   <pre>Gets the most recent health check results for this regional BackendService.
    290 
    291 Args:
    292   project: string, A parameter (required)
    293   region: string, Name of the region scoping this request. (required)
    294   backendService: string, Name of the BackendService resource to which the queried instance belongs. (required)
    295   body: object, The request body. (required)
    296     The object takes the form of:
    297 
    298 {
    299     "group": "A String", # A URI referencing one of the instance groups listed in the backend service.
    300   }
    301 
    302 
    303 Returns:
    304   An object of the form:
    305 
    306     {
    307     "kind": "compute#backendServiceGroupHealth", # [Output Only] Type of resource. Always compute#backendServiceGroupHealth for the health of backend services.
    308     "healthStatus": [
    309       {
    310         "instance": "A String", # URL of the instance resource.
    311         "healthState": "A String", # Health state of the instance.
    312         "ipAddress": "A String", # The IP address represented by this resource.
    313         "port": 42, # The port on the instance.
    314       },
    315     ],
    316   }</pre>
    317 </div>
    318 
    319 <div class="method">
    320     <code class="details" id="insert">insert(project, region, body, requestId=None)</code>
    321   <pre>Creates a regional BackendService resource in the specified project using the data included in the request. There are several restrictions and guidelines to keep in mind when creating a regional backend service. Read  Restrictions and Guidelines for more information.
    322 
    323 Args:
    324   project: string, Project ID for this request. (required)
    325   region: string, Name of the region scoping this request. (required)
    326   body: object, The request body. (required)
    327     The object takes the form of:
    328 
    329 { # A BackendService resource. This resource defines a group of backend virtual machines and their serving capacity.
    330     "connectionDraining": { # Message containing connection draining configuration.
    331       "drainingTimeoutSec": 42, # Time for which instance will be drained (not accept new connections, but still work to finish started).
    332     },
    333     "failoverRatio": 3.14, # The value of the field must be in [0, 1]. If set, 'backends[].failover' must be set. They together define the fallback behavior of the primary backend: if the ratio of the healthy VMs in the primary backend is at or below this number, traffic arriving at the load-balanced IP will be directed to the failover backend.
    334         # 
    335         # In case where 'failoverRatio' is not set or all the VMs in the backup backend are unhealthy, the traffic will be directed back to the primary backend in the "force" mode, where traffic will be spread to the healthy VMs with the best effort, or to all VMs when no VM is healthy.
    336         # 
    337         # This field is only used with l4 load balancing.
    338     "protocol": "A String", # The protocol this BackendService uses to communicate with backends.
    339         # 
    340         # Possible values are HTTP, HTTPS, TCP, and SSL. The default is HTTP.
    341         # 
    342         # For internal load balancing, the possible values are TCP and UDP, and the default is TCP.
    343     "loadBalancingScheme": "A String",
    344     "healthChecks": [ # The list of URLs to the HttpHealthCheck or HttpsHealthCheck resource for health checking this BackendService. Currently at most one health check can be specified, and a health check is required.
    345         # 
    346         # For internal load balancing, a URL to a HealthCheck resource must be specified instead.
    347       "A String",
    348     ],
    349     "sessionAffinity": "A String", # Type of session affinity to use. The default is NONE.
    350         # 
    351         # When the load balancing scheme is EXTERNAL, can be NONE, CLIENT_IP, or GENERATED_COOKIE.
    352         # 
    353         # When the load balancing scheme is INTERNAL, can be NONE, CLIENT_IP, CLIENT_IP_PROTO, or CLIENT_IP_PORT_PROTO.
    354         # 
    355         # When the protocol is UDP, this field is not used.
    356     "creationTimestamp": "A String", # [Output Only] Creation timestamp in RFC3339 text format.
    357     "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
    358     "cdnPolicy": { # Message containing Cloud CDN configuration for a backend service. # Cloud CDN configuration for this BackendService.
    359       "signedUrlKeyNames": [ # [Output Only] Names of the keys currently configured for Cloud CDN Signed URL on this backend service.
    360         "A String",
    361       ],
    362       "signedUrlCacheMaxAgeSec": "A String", # Number of seconds up to which the response to a signed URL request will be cached in the CDN. After this time period, the Signed URL will be revalidated before being served. Defaults to 1hr (3600s). If this field is set, Cloud CDN will internally act as though all responses from this backend had a ?Cache-Control: public, max-age=[TTL]? header, regardless of any existing Cache-Control header. The actual headers served in responses will not be altered.
    363       "cacheKeyPolicy": { # Message containing what to include in the cache key for a request for Cloud CDN. # The CacheKeyPolicy for this CdnPolicy.
    364         "includeQueryString": True or False, # If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.
    365         "includeHost": True or False, # If true, requests to different hosts will be cached separately.
    366         "queryStringBlacklist": [ # Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
    367           "A String",
    368         ],
    369         "queryStringWhitelist": [ # Names of query string parameters to include in cache keys. All other parameters will be excluded. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
    370           "A String",
    371         ],
    372         "includeProtocol": True or False, # If true, http and https requests will be cached separately.
    373       },
    374     },
    375     "enableCDN": True or False, # If true, enable Cloud CDN for this BackendService.
    376         # 
    377         # When the load balancing scheme is INTERNAL, this field is not used.
    378     "affinityCookieTtlSec": 42, # Lifetime of cookies in seconds if session_affinity is GENERATED_COOKIE. If set to 0, the cookie is non-persistent and lasts only until the end of the browser session (or equivalent). The maximum allowed value for TTL is one day.
    379         # 
    380         # When the load balancing scheme is INTERNAL, this field is not used.
    381     "port": 42, # Deprecated in favor of portName. The TCP port to connect on the backend. The default value is 80.
    382         # 
    383         # This cannot be used for internal load balancing.
    384     "backends": [ # The list of backends that serve this BackendService.
    385       { # Message containing information of one individual backend.
    386         "group": "A String", # The fully-qualified URL of a zonal Instance Group resource. This instance group defines the list of instances that serve traffic. Member virtual machine instances from each instance group must live in the same zone as the instance group itself. No two backends in a backend service are allowed to use same Instance Group resource.
    387             #
    388             # Note that you must specify an Instance Group resource using the fully-qualified URL, rather than a partial URL.
    389             #
    390             # When the BackendService has load balancing scheme INTERNAL, the instance group must be in a zone within the same region as the BackendService.
    391         "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
    392         "maxUtilization": 3.14, # Used when balancingMode is UTILIZATION. This ratio defines the CPU utilization target for the group. The default is 0.8. Valid range is [0.0, 1.0].
    393             #
    394             # This cannot be used for internal load balancing.
    395         "failover": True or False, # This field designates whether this is a failover backend. More than one failover backend can be configured for a given BackendService.
    396         "maxRatePerInstance": 3.14, # The max requests per second (RPS) that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either balancing mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
    397             #
    398             # This cannot be used for internal load balancing.
    399         "maxConnectionsPerInstance": 42, # The max number of simultaneous connections that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either CONNECTION or UTILIZATION balancing modes. For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.
    400             #
    401             # This cannot be used for internal load balancing.
    402         "capacityScaler": 3.14, # A multiplier applied to the group's maximum servicing capacity (based on UTILIZATION, RATE or CONNECTION). Default value is 1, which means the group will serve up to 100% of its configured capacity (depending on balancingMode). A setting of 0 means the group is completely drained, offering 0% of its available Capacity. Valid range is [0.0,1.0].
    403             #
    404             # This cannot be used for internal load balancing.
    405         "maxRate": 42, # The max requests per second (RPS) of the group. Can be used with either RATE or UTILIZATION balancing modes, but required if RATE mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
    406             #
    407             # This cannot be used for internal load balancing.
    408         "maxConnections": 42, # The max number of simultaneous connections for the group. Can be used with either CONNECTION or UTILIZATION balancing modes. For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.
    409             #
    410             # This cannot be used for internal load balancing.
    411         "balancingMode": "A String", # Specifies the balancing mode for this backend. For global HTTP(S) or TCP/SSL load balancing, the default is UTILIZATION. Valid values are UTILIZATION, RATE (for HTTP(S)) and CONNECTION (for TCP/SSL).
    412             #
    413             # This cannot be used for internal load balancing.
    414       },
    415     ],
    416     "iap": { # Identity-Aware Proxy
    417       "oauth2ClientId": "A String",
    418       "enabled": True or False,
    419       "oauth2ClientSecret": "A String",
    420       "oauth2ClientSecretSha256": "A String", # [Output Only] SHA256 hash value for the field oauth2_client_secret above.
    421     },
    422     "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
    423     "customRequestHeaders": [ # Headers that the HTTP/S load balancer should add to proxied requests.
    424       "A String",
    425     ],
    426     "securityPolicy": "A String", # [Output Only] The resource URL for the security policy associated with this backend service.
    427     "fingerprint": "A String", # Fingerprint of this resource. A hash of the contents stored in this object. This field is used in optimistic locking. This field will be ignored when inserting a BackendService. An up-to-date fingerprint must be provided in order to update the BackendService.
    428     "portName": "A String", # Name of backend port. The same name should appear in the instance groups referenced by this service. Required when the load balancing scheme is EXTERNAL.
    429         # 
    430         # When the load balancing scheme is INTERNAL, this field is not used.
    431     "kind": "compute#backendService", # [Output Only] Type of resource. Always compute#backendService for backend services.
    432     "name": "A String", # Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
    433     "region": "A String", # [Output Only] URL of the region where the regional backend service resides. This field is not applicable to global backend services.
    434     "timeoutSec": 42, # How many seconds to wait for the backend before considering it a failed request. Default is 30 seconds.
    435     "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
    436   }
    437 
    438   requestId: string, begin_interface: MixerMutationRequestBuilder Request ID to support idempotency.
    439 
    440 Returns:
    441   An object of the form:
    442 
    443     { # An Operation resource, used to manage asynchronous API requests.
    444     "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
    445     "clientOperationId": "A String", # [Output Only] Reserved for future use.
    446     "creationTimestamp": "A String", # [Deprecated] This field is deprecated.
    447     "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
    448     "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only available when performing per-zone operations.
    449     "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
    450     "operationType": "A String", # [Output Only] The type of operation, such as insert, update, or delete, and so on.
    451     "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
    452     "progress": 42, # [Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
    453     "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
    454     "statusMessage": "A String", # [Output Only] An optional textual description of the current status of the operation.
    455     "status": "A String", # [Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
    456     "description": "A String", # [Output Only] A textual description of the operation, which is set when the operation is created.
    457     "warnings": [ # [Output Only] If warning messages are generated during processing of the operation, this field will be populated.
    458       {
    459         "message": "A String", # [Output Only] A human-readable description of the warning code.
    460         "code": "A String", # [Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.
    461         "data": [ # [Output Only] Metadata about this warning in key: value format. For example:
    462             # "data": [ { "key": "scope", "value": "zones/us-east1-d" }
    463           {
    464             "value": "A String", # [Output Only] A warning data value corresponding to the key.
    465             "key": "A String", # [Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
    466           },
    467         ],
    468       },
    469     ],
    470     "user": "A String", # [Output Only] User who requested the operation, for example: user (a] example.com.
    471     "startTime": "A String", # [Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
    472     "kind": "compute#operation", # [Output Only] Type of the resource. Always compute#operation for Operation resources.
    473     "name": "A String", # [Output Only] Name of the resource.
    474     "region": "A String", # [Output Only] The URL of the region where the operation resides. Only available when performing regional operations.
    475     "error": { # [Output Only] If errors are generated during processing of the operation, this field will be populated.
    476       "errors": [ # [Output Only] The array of errors encountered while processing this operation.
    477         {
    478           "message": "A String", # [Output Only] An optional, human-readable error message.
    479           "code": "A String", # [Output Only] The error type identifier for this error.
    480           "location": "A String", # [Output Only] Indicates the field in the request that caused the error. This property is optional.
    481         },
    482       ],
    483     },
    484     "endTime": "A String", # [Output Only] The time that this operation was completed. This value is in RFC3339 text format.
    485     "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
    486     "targetLink": "A String", # [Output Only] The URL of the resource that the operation modifies. For operations related to creating a snapshot, this points to the persistent disk that the snapshot was created from.
    487   }</pre>
    488 </div>
    489 
    490 <div class="method">
    491     <code class="details" id="list">list(project, region, orderBy=None, maxResults=None, pageToken=None, filter=None)</code>
    492   <pre>Retrieves the list of regional BackendService resources available to the specified project in the given region.
    493 
    494 Args:
    495   project: string, Project ID for this request. (required)
    496   region: string, Name of the region scoping this request. (required)
    497   orderBy: string, Sorts list results by a certain order. By default, results are returned in alphanumerical order based on the resource name.
    498 
    499 You can also sort results in descending order based on the creation timestamp using orderBy="creationTimestamp desc". This sorts results based on the creationTimestamp field in reverse chronological order (newest result first). Use this to sort resources like operations so that the newest operation is returned first.
    500 
    501 Currently, only sorting by name or creationTimestamp desc is supported.
    502   maxResults: integer, The maximum number of results per page that should be returned. If the number of available results is larger than maxResults, Compute Engine returns a nextPageToken that can be used to get the next page of results in subsequent list requests. Acceptable values are 0 to 500, inclusive. (Default: 500)
    503   pageToken: string, Specifies a page token to use. Set pageToken to the nextPageToken returned by a previous list request to get the next page of results.
    504   filter: string, Sets a filter expression for filtering listed resources, in the form filter={expression}. Your {expression} must be in the format: field_name comparison_string literal_string.
    505 
    506 The field_name is the name of the field you want to compare. Only atomic field types are supported (string, number, boolean). The comparison_string must be either eq (equals) or ne (not equals). The literal_string is the string value to filter to. The literal value must be valid for the type of field you are filtering by (string, number, boolean). For string fields, the literal value is interpreted as a regular expression using RE2 syntax. The literal value must match the entire field.
    507 
    508 For example, to filter for instances that do not have a name of example-instance, you would use filter=name ne example-instance.
    509 
    510 You can filter on nested fields. For example, you could filter on instances that have set the scheduling.automaticRestart field to true. Use filtering on nested fields to take advantage of labels to organize and search for results based on label values.
    511 
    512 To filter on multiple expressions, provide each separate expression within parentheses. For example, (scheduling.automaticRestart eq true) (zone eq us-central1-f). Multiple expressions are treated as AND expressions, meaning that resources must match all expressions to pass the filters.
    513 
    514 Returns:
    515   An object of the form:
    516 
    517     { # Contains a list of BackendService resources.
    518     "nextPageToken": "A String", # [Output Only] This token allows you to get the next page of results for list requests. If the number of results is larger than maxResults, use the nextPageToken as a value for the query parameter pageToken in the next list request. Subsequent list requests will have their own nextPageToken to continue paging through the results.
    519     "items": [ # A list of BackendService resources.
    520       { # A BackendService resource. This resource defines a group of backend virtual machines and their serving capacity.
    521           "connectionDraining": { # Message containing connection draining configuration.
    522             "drainingTimeoutSec": 42, # Time for which instance will be drained (not accept new connections, but still work to finish started).
    523           },
    524           "failoverRatio": 3.14, # The value of the field must be in [0, 1]. If set, 'backends[].failover' must be set. They together define the fallback behavior of the primary backend: if the ratio of the healthy VMs in the primary backend is at or below this number, traffic arriving at the load-balanced IP will be directed to the failover backend.
    525               #
    526               # In case where 'failoverRatio' is not set or all the VMs in the backup backend are unhealthy, the traffic will be directed back to the primary backend in the "force" mode, where traffic will be spread to the healthy VMs with the best effort, or to all VMs when no VM is healthy.
    527               #
    528               # This field is only used with l4 load balancing.
    529           "protocol": "A String", # The protocol this BackendService uses to communicate with backends.
    530               #
    531               # Possible values are HTTP, HTTPS, TCP, and SSL. The default is HTTP.
    532               #
    533               # For internal load balancing, the possible values are TCP and UDP, and the default is TCP.
    534           "loadBalancingScheme": "A String",
    535           "healthChecks": [ # The list of URLs to the HttpHealthCheck or HttpsHealthCheck resource for health checking this BackendService. Currently at most one health check can be specified, and a health check is required.
    536               #
    537               # For internal load balancing, a URL to a HealthCheck resource must be specified instead.
    538             "A String",
    539           ],
    540           "sessionAffinity": "A String", # Type of session affinity to use. The default is NONE.
    541               #
    542               # When the load balancing scheme is EXTERNAL, can be NONE, CLIENT_IP, or GENERATED_COOKIE.
    543               #
    544               # When the load balancing scheme is INTERNAL, can be NONE, CLIENT_IP, CLIENT_IP_PROTO, or CLIENT_IP_PORT_PROTO.
    545               #
    546               # When the protocol is UDP, this field is not used.
    547           "creationTimestamp": "A String", # [Output Only] Creation timestamp in RFC3339 text format.
    548           "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
    549           "cdnPolicy": { # Message containing Cloud CDN configuration for a backend service. # Cloud CDN configuration for this BackendService.
    550             "signedUrlKeyNames": [ # [Output Only] Names of the keys currently configured for Cloud CDN Signed URL on this backend service.
    551               "A String",
    552             ],
    553             "signedUrlCacheMaxAgeSec": "A String", # Number of seconds up to which the response to a signed URL request will be cached in the CDN. After this time period, the Signed URL will be revalidated before being served. Defaults to 1hr (3600s). If this field is set, Cloud CDN will internally act as though all responses from this backend had a ?Cache-Control: public, max-age=[TTL]? header, regardless of any existing Cache-Control header. The actual headers served in responses will not be altered.
    554             "cacheKeyPolicy": { # Message containing what to include in the cache key for a request for Cloud CDN. # The CacheKeyPolicy for this CdnPolicy.
    555               "includeQueryString": True or False, # If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.
    556               "includeHost": True or False, # If true, requests to different hosts will be cached separately.
    557               "queryStringBlacklist": [ # Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
    558                 "A String",
    559               ],
    560               "queryStringWhitelist": [ # Names of query string parameters to include in cache keys. All other parameters will be excluded. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
    561                 "A String",
    562               ],
    563               "includeProtocol": True or False, # If true, http and https requests will be cached separately.
    564             },
    565           },
    566           "enableCDN": True or False, # If true, enable Cloud CDN for this BackendService.
    567               #
    568               # When the load balancing scheme is INTERNAL, this field is not used.
    569           "affinityCookieTtlSec": 42, # Lifetime of cookies in seconds if session_affinity is GENERATED_COOKIE. If set to 0, the cookie is non-persistent and lasts only until the end of the browser session (or equivalent). The maximum allowed value for TTL is one day.
    570               #
    571               # When the load balancing scheme is INTERNAL, this field is not used.
    572           "port": 42, # Deprecated in favor of portName. The TCP port to connect on the backend. The default value is 80.
    573               #
    574               # This cannot be used for internal load balancing.
    575           "backends": [ # The list of backends that serve this BackendService.
    576             { # Message containing information of one individual backend.
    577               "group": "A String", # The fully-qualified URL of a zonal Instance Group resource. This instance group defines the list of instances that serve traffic. Member virtual machine instances from each instance group must live in the same zone as the instance group itself. No two backends in a backend service are allowed to use same Instance Group resource.
    578                   #
    579                   # Note that you must specify an Instance Group resource using the fully-qualified URL, rather than a partial URL.
    580                   #
    581                   # When the BackendService has load balancing scheme INTERNAL, the instance group must be in a zone within the same region as the BackendService.
    582               "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
    583               "maxUtilization": 3.14, # Used when balancingMode is UTILIZATION. This ratio defines the CPU utilization target for the group. The default is 0.8. Valid range is [0.0, 1.0].
    584                   #
    585                   # This cannot be used for internal load balancing.
    586               "failover": True or False, # This field designates whether this is a failover backend. More than one failover backend can be configured for a given BackendService.
    587               "maxRatePerInstance": 3.14, # The max requests per second (RPS) that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either balancing mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
    588                   #
    589                   # This cannot be used for internal load balancing.
    590               "maxConnectionsPerInstance": 42, # The max number of simultaneous connections that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either CONNECTION or UTILIZATION balancing modes. For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.
    591                   #
    592                   # This cannot be used for internal load balancing.
    593               "capacityScaler": 3.14, # A multiplier applied to the group's maximum servicing capacity (based on UTILIZATION, RATE or CONNECTION). Default value is 1, which means the group will serve up to 100% of its configured capacity (depending on balancingMode). A setting of 0 means the group is completely drained, offering 0% of its available Capacity. Valid range is [0.0,1.0].
    594                   #
    595                   # This cannot be used for internal load balancing.
    596               "maxRate": 42, # The max requests per second (RPS) of the group. Can be used with either RATE or UTILIZATION balancing modes, but required if RATE mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
    597                   #
    598                   # This cannot be used for internal load balancing.
    599               "maxConnections": 42, # The max number of simultaneous connections for the group. Can be used with either CONNECTION or UTILIZATION balancing modes. For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.
    600                   #
    601                   # This cannot be used for internal load balancing.
    602               "balancingMode": "A String", # Specifies the balancing mode for this backend. For global HTTP(S) or TCP/SSL load balancing, the default is UTILIZATION. Valid values are UTILIZATION, RATE (for HTTP(S)) and CONNECTION (for TCP/SSL).
    603                   #
    604                   # This cannot be used for internal load balancing.
    605             },
    606           ],
    607           "iap": { # Identity-Aware Proxy
    608             "oauth2ClientId": "A String",
    609             "enabled": True or False,
    610             "oauth2ClientSecret": "A String",
    611             "oauth2ClientSecretSha256": "A String", # [Output Only] SHA256 hash value for the field oauth2_client_secret above.
    612           },
    613           "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
    614           "customRequestHeaders": [ # Headers that the HTTP/S load balancer should add to proxied requests.
    615             "A String",
    616           ],
    617           "securityPolicy": "A String", # [Output Only] The resource URL for the security policy associated with this backend service.
    618           "fingerprint": "A String", # Fingerprint of this resource. A hash of the contents stored in this object. This field is used in optimistic locking. This field will be ignored when inserting a BackendService. An up-to-date fingerprint must be provided in order to update the BackendService.
    619           "portName": "A String", # Name of backend port. The same name should appear in the instance groups referenced by this service. Required when the load balancing scheme is EXTERNAL.
    620               #
    621               # When the load balancing scheme is INTERNAL, this field is not used.
    622           "kind": "compute#backendService", # [Output Only] Type of resource. Always compute#backendService for backend services.
    623           "name": "A String", # Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
    624           "region": "A String", # [Output Only] URL of the region where the regional backend service resides. This field is not applicable to global backend services.
    625           "timeoutSec": 42, # How many seconds to wait for the backend before considering it a failed request. Default is 30 seconds.
    626           "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
    627         },
    628     ],
    629     "kind": "compute#backendServiceList", # [Output Only] Type of resource. Always compute#backendServiceList for lists of backend services.
    630     "id": "A String", # [Output Only] Unique identifier for the resource; defined by the server.
    631     "selfLink": "A String", # [Output Only] Server-defined URL for this resource.
    632   }</pre>
    633 </div>
    634 
    635 <div class="method">
    636     <code class="details" id="list_next">list_next(previous_request, previous_response)</code>
    637   <pre>Retrieves the next page of results.
    638 
    639 Args:
    640   previous_request: The request for the previous page. (required)
    641   previous_response: The response from the request for the previous page. (required)
    642 
    643 Returns:
    644   A request object that you can call 'execute()' on to request the next
    645   page. Returns None if there are no more items in the collection.
    646     </pre>
    647 </div>
    648 
    649 <div class="method">
    650     <code class="details" id="patch">patch(project, region, backendService, body, requestId=None)</code>
    651   <pre>Updates the specified regional BackendService resource with the data included in the request. There are several restrictions and guidelines to keep in mind when updating a backend service. Read  Restrictions and Guidelines for more information. This method supports patch semantics.
    652 
    653 Args:
    654   project: string, Project ID for this request. (required)
    655   region: string, Name of the region scoping this request. (required)
    656   backendService: string, Name of the BackendService resource to patch. (required)
    657   body: object, The request body. (required)
    658     The object takes the form of:
    659 
    660 { # A BackendService resource. This resource defines a group of backend virtual machines and their serving capacity.
    661     "connectionDraining": { # Message containing connection draining configuration.
    662       "drainingTimeoutSec": 42, # Time for which instance will be drained (not accept new connections, but still work to finish started).
    663     },
    664     "failoverRatio": 3.14, # The value of the field must be in [0, 1]. If set, 'backends[].failover' must be set. They together define the fallback behavior of the primary backend: if the ratio of the healthy VMs in the primary backend is at or below this number, traffic arriving at the load-balanced IP will be directed to the failover backend.
    665         # 
    666         # In case where 'failoverRatio' is not set or all the VMs in the backup backend are unhealthy, the traffic will be directed back to the primary backend in the "force" mode, where traffic will be spread to the healthy VMs with the best effort, or to all VMs when no VM is healthy.
    667         # 
    668         # This field is only used with l4 load balancing.
    669     "protocol": "A String", # The protocol this BackendService uses to communicate with backends.
    670         # 
    671         # Possible values are HTTP, HTTPS, TCP, and SSL. The default is HTTP.
    672         # 
    673         # For internal load balancing, the possible values are TCP and UDP, and the default is TCP.
    674     "loadBalancingScheme": "A String",
    675     "healthChecks": [ # The list of URLs to the HttpHealthCheck or HttpsHealthCheck resource for health checking this BackendService. Currently at most one health check can be specified, and a health check is required.
    676         # 
    677         # For internal load balancing, a URL to a HealthCheck resource must be specified instead.
    678       "A String",
    679     ],
    680     "sessionAffinity": "A String", # Type of session affinity to use. The default is NONE.
    681         # 
    682         # When the load balancing scheme is EXTERNAL, can be NONE, CLIENT_IP, or GENERATED_COOKIE.
    683         # 
    684         # When the load balancing scheme is INTERNAL, can be NONE, CLIENT_IP, CLIENT_IP_PROTO, or CLIENT_IP_PORT_PROTO.
    685         # 
    686         # When the protocol is UDP, this field is not used.
    687     "creationTimestamp": "A String", # [Output Only] Creation timestamp in RFC3339 text format.
    688     "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
    689     "cdnPolicy": { # Message containing Cloud CDN configuration for a backend service. # Cloud CDN configuration for this BackendService.
    690       "signedUrlKeyNames": [ # [Output Only] Names of the keys currently configured for Cloud CDN Signed URL on this backend service.
    691         "A String",
    692       ],
    693       "signedUrlCacheMaxAgeSec": "A String", # Number of seconds up to which the response to a signed URL request will be cached in the CDN. After this time period, the Signed URL will be revalidated before being served. Defaults to 1hr (3600s). If this field is set, Cloud CDN will internally act as though all responses from this backend had a ?Cache-Control: public, max-age=[TTL]? header, regardless of any existing Cache-Control header. The actual headers served in responses will not be altered.
    694       "cacheKeyPolicy": { # Message containing what to include in the cache key for a request for Cloud CDN. # The CacheKeyPolicy for this CdnPolicy.
    695         "includeQueryString": True or False, # If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.
    696         "includeHost": True or False, # If true, requests to different hosts will be cached separately.
    697         "queryStringBlacklist": [ # Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
    698           "A String",
    699         ],
    700         "queryStringWhitelist": [ # Names of query string parameters to include in cache keys. All other parameters will be excluded. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
    701           "A String",
    702         ],
    703         "includeProtocol": True or False, # If true, http and https requests will be cached separately.
    704       },
    705     },
    706     "enableCDN": True or False, # If true, enable Cloud CDN for this BackendService.
    707         # 
    708         # When the load balancing scheme is INTERNAL, this field is not used.
    709     "affinityCookieTtlSec": 42, # Lifetime of cookies in seconds if session_affinity is GENERATED_COOKIE. If set to 0, the cookie is non-persistent and lasts only until the end of the browser session (or equivalent). The maximum allowed value for TTL is one day.
    710         # 
    711         # When the load balancing scheme is INTERNAL, this field is not used.
    712     "port": 42, # Deprecated in favor of portName. The TCP port to connect on the backend. The default value is 80.
    713         # 
    714         # This cannot be used for internal load balancing.
    715     "backends": [ # The list of backends that serve this BackendService.
    716       { # Message containing information of one individual backend.
    717         "group": "A String", # The fully-qualified URL of a zonal Instance Group resource. This instance group defines the list of instances that serve traffic. Member virtual machine instances from each instance group must live in the same zone as the instance group itself. No two backends in a backend service are allowed to use same Instance Group resource.
    718             #
    719             # Note that you must specify an Instance Group resource using the fully-qualified URL, rather than a partial URL.
    720             #
    721             # When the BackendService has load balancing scheme INTERNAL, the instance group must be in a zone within the same region as the BackendService.
    722         "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
    723         "maxUtilization": 3.14, # Used when balancingMode is UTILIZATION. This ratio defines the CPU utilization target for the group. The default is 0.8. Valid range is [0.0, 1.0].
    724             #
    725             # This cannot be used for internal load balancing.
    726         "failover": True or False, # This field designates whether this is a failover backend. More than one failover backend can be configured for a given BackendService.
    727         "maxRatePerInstance": 3.14, # The max requests per second (RPS) that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either balancing mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
    728             #
    729             # This cannot be used for internal load balancing.
    730         "maxConnectionsPerInstance": 42, # The max number of simultaneous connections that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either CONNECTION or UTILIZATION balancing modes. For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.
    731             #
    732             # This cannot be used for internal load balancing.
    733         "capacityScaler": 3.14, # A multiplier applied to the group's maximum servicing capacity (based on UTILIZATION, RATE or CONNECTION). Default value is 1, which means the group will serve up to 100% of its configured capacity (depending on balancingMode). A setting of 0 means the group is completely drained, offering 0% of its available Capacity. Valid range is [0.0,1.0].
    734             #
    735             # This cannot be used for internal load balancing.
    736         "maxRate": 42, # The max requests per second (RPS) of the group. Can be used with either RATE or UTILIZATION balancing modes, but required if RATE mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
    737             #
    738             # This cannot be used for internal load balancing.
    739         "maxConnections": 42, # The max number of simultaneous connections for the group. Can be used with either CONNECTION or UTILIZATION balancing modes. For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.
    740             #
    741             # This cannot be used for internal load balancing.
    742         "balancingMode": "A String", # Specifies the balancing mode for this backend. For global HTTP(S) or TCP/SSL load balancing, the default is UTILIZATION. Valid values are UTILIZATION, RATE (for HTTP(S)) and CONNECTION (for TCP/SSL).
    743             #
    744             # This cannot be used for internal load balancing.
    745       },
    746     ],
    747     "iap": { # Identity-Aware Proxy
    748       "oauth2ClientId": "A String",
    749       "enabled": True or False,
    750       "oauth2ClientSecret": "A String",
    751       "oauth2ClientSecretSha256": "A String", # [Output Only] SHA256 hash value for the field oauth2_client_secret above.
    752     },
    753     "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
    754     "customRequestHeaders": [ # Headers that the HTTP/S load balancer should add to proxied requests.
    755       "A String",
    756     ],
    757     "securityPolicy": "A String", # [Output Only] The resource URL for the security policy associated with this backend service.
    758     "fingerprint": "A String", # Fingerprint of this resource. A hash of the contents stored in this object. This field is used in optimistic locking. This field will be ignored when inserting a BackendService. An up-to-date fingerprint must be provided in order to update the BackendService.
    759     "portName": "A String", # Name of backend port. The same name should appear in the instance groups referenced by this service. Required when the load balancing scheme is EXTERNAL.
    760         # 
    761         # When the load balancing scheme is INTERNAL, this field is not used.
    762     "kind": "compute#backendService", # [Output Only] Type of resource. Always compute#backendService for backend services.
    763     "name": "A String", # Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
    764     "region": "A String", # [Output Only] URL of the region where the regional backend service resides. This field is not applicable to global backend services.
    765     "timeoutSec": 42, # How many seconds to wait for the backend before considering it a failed request. Default is 30 seconds.
    766     "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
    767   }
    768 
    769   requestId: string, begin_interface: MixerMutationRequestBuilder Request ID to support idempotency.
    770 
    771 Returns:
    772   An object of the form:
    773 
    774     { # An Operation resource, used to manage asynchronous API requests.
    775     "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
    776     "clientOperationId": "A String", # [Output Only] Reserved for future use.
    777     "creationTimestamp": "A String", # [Deprecated] This field is deprecated.
    778     "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
    779     "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only available when performing per-zone operations.
    780     "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
    781     "operationType": "A String", # [Output Only] The type of operation, such as insert, update, or delete, and so on.
    782     "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
    783     "progress": 42, # [Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
    784     "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
    785     "statusMessage": "A String", # [Output Only] An optional textual description of the current status of the operation.
    786     "status": "A String", # [Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
    787     "description": "A String", # [Output Only] A textual description of the operation, which is set when the operation is created.
    788     "warnings": [ # [Output Only] If warning messages are generated during processing of the operation, this field will be populated.
    789       {
    790         "message": "A String", # [Output Only] A human-readable description of the warning code.
    791         "code": "A String", # [Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.
    792         "data": [ # [Output Only] Metadata about this warning in key: value format. For example:
    793             # "data": [ { "key": "scope", "value": "zones/us-east1-d" }
    794           {
    795             "value": "A String", # [Output Only] A warning data value corresponding to the key.
    796             "key": "A String", # [Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
    797           },
    798         ],
    799       },
    800     ],
    801     "user": "A String", # [Output Only] User who requested the operation, for example: user (a] example.com.
    802     "startTime": "A String", # [Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
    803     "kind": "compute#operation", # [Output Only] Type of the resource. Always compute#operation for Operation resources.
    804     "name": "A String", # [Output Only] Name of the resource.
    805     "region": "A String", # [Output Only] The URL of the region where the operation resides. Only available when performing regional operations.
    806     "error": { # [Output Only] If errors are generated during processing of the operation, this field will be populated.
    807       "errors": [ # [Output Only] The array of errors encountered while processing this operation.
    808         {
    809           "message": "A String", # [Output Only] An optional, human-readable error message.
    810           "code": "A String", # [Output Only] The error type identifier for this error.
    811           "location": "A String", # [Output Only] Indicates the field in the request that caused the error. This property is optional.
    812         },
    813       ],
    814     },
    815     "endTime": "A String", # [Output Only] The time that this operation was completed. This value is in RFC3339 text format.
    816     "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
    817     "targetLink": "A String", # [Output Only] The URL of the resource that the operation modifies. For operations related to creating a snapshot, this points to the persistent disk that the snapshot was created from.
    818   }</pre>
    819 </div>
    820 
    821 <div class="method">
    822     <code class="details" id="testIamPermissions">testIamPermissions(project, region, resource, body)</code>
    823   <pre>Returns permissions that a caller has on the specified resource.
    824 
    825 Args:
    826   project: string, Project ID for this request. (required)
    827   region: string, The name of the region for this request. (required)
    828   resource: string, Name of the resource for this request. (required)
    829   body: object, The request body. (required)
    830     The object takes the form of:
    831 
    832 {
    833     "permissions": [ # The set of permissions to check for the 'resource'. Permissions with wildcards (such as '*' or 'storage.*') are not allowed.
    834       "A String",
    835     ],
    836   }
    837 
    838 
    839 Returns:
    840   An object of the form:
    841 
    842     {
    843     "permissions": [ # A subset of `TestPermissionsRequest.permissions` that the caller is allowed.
    844       "A String",
    845     ],
    846   }</pre>
    847 </div>
    848 
    849 <div class="method">
    850     <code class="details" id="update">update(project, region, backendService, body, requestId=None)</code>
    851   <pre>Updates the specified regional BackendService resource with the data included in the request. There are several restrictions and guidelines to keep in mind when updating a backend service. Read  Restrictions and Guidelines for more information.
    852 
    853 Args:
    854   project: string, Project ID for this request. (required)
    855   region: string, Name of the region scoping this request. (required)
    856   backendService: string, Name of the BackendService resource to update. (required)
    857   body: object, The request body. (required)
    858     The object takes the form of:
    859 
    860 { # A BackendService resource. This resource defines a group of backend virtual machines and their serving capacity.
    861     "connectionDraining": { # Message containing connection draining configuration.
    862       "drainingTimeoutSec": 42, # Time for which instance will be drained (not accept new connections, but still work to finish started).
    863     },
    864     "failoverRatio": 3.14, # The value of the field must be in [0, 1]. If set, 'backends[].failover' must be set. They together define the fallback behavior of the primary backend: if the ratio of the healthy VMs in the primary backend is at or below this number, traffic arriving at the load-balanced IP will be directed to the failover backend.
    865         # 
    866         # In case where 'failoverRatio' is not set or all the VMs in the backup backend are unhealthy, the traffic will be directed back to the primary backend in the "force" mode, where traffic will be spread to the healthy VMs with the best effort, or to all VMs when no VM is healthy.
    867         # 
    868         # This field is only used with l4 load balancing.
    869     "protocol": "A String", # The protocol this BackendService uses to communicate with backends.
    870         # 
    871         # Possible values are HTTP, HTTPS, TCP, and SSL. The default is HTTP.
    872         # 
    873         # For internal load balancing, the possible values are TCP and UDP, and the default is TCP.
    874     "loadBalancingScheme": "A String",
    875     "healthChecks": [ # The list of URLs to the HttpHealthCheck or HttpsHealthCheck resource for health checking this BackendService. Currently at most one health check can be specified, and a health check is required.
    876         # 
    877         # For internal load balancing, a URL to a HealthCheck resource must be specified instead.
    878       "A String",
    879     ],
    880     "sessionAffinity": "A String", # Type of session affinity to use. The default is NONE.
    881         # 
    882         # When the load balancing scheme is EXTERNAL, can be NONE, CLIENT_IP, or GENERATED_COOKIE.
    883         # 
    884         # When the load balancing scheme is INTERNAL, can be NONE, CLIENT_IP, CLIENT_IP_PROTO, or CLIENT_IP_PORT_PROTO.
    885         # 
    886         # When the protocol is UDP, this field is not used.
    887     "creationTimestamp": "A String", # [Output Only] Creation timestamp in RFC3339 text format.
    888     "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
    889     "cdnPolicy": { # Message containing Cloud CDN configuration for a backend service. # Cloud CDN configuration for this BackendService.
    890       "signedUrlKeyNames": [ # [Output Only] Names of the keys currently configured for Cloud CDN Signed URL on this backend service.
    891         "A String",
    892       ],
    893       "signedUrlCacheMaxAgeSec": "A String", # Number of seconds up to which the response to a signed URL request will be cached in the CDN. After this time period, the Signed URL will be revalidated before being served. Defaults to 1hr (3600s). If this field is set, Cloud CDN will internally act as though all responses from this backend had a ?Cache-Control: public, max-age=[TTL]? header, regardless of any existing Cache-Control header. The actual headers served in responses will not be altered.
    894       "cacheKeyPolicy": { # Message containing what to include in the cache key for a request for Cloud CDN. # The CacheKeyPolicy for this CdnPolicy.
    895         "includeQueryString": True or False, # If true, include query string parameters in the cache key according to query_string_whitelist and query_string_blacklist. If neither is set, the entire query string will be included. If false, the query string will be excluded from the cache key entirely.
    896         "includeHost": True or False, # If true, requests to different hosts will be cached separately.
    897         "queryStringBlacklist": [ # Names of query string parameters to exclude in cache keys. All other parameters will be included. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
    898           "A String",
    899         ],
    900         "queryStringWhitelist": [ # Names of query string parameters to include in cache keys. All other parameters will be excluded. Either specify query_string_whitelist or query_string_blacklist, not both. '&' and '=' will be percent encoded and not treated as delimiters.
    901           "A String",
    902         ],
    903         "includeProtocol": True or False, # If true, http and https requests will be cached separately.
    904       },
    905     },
    906     "enableCDN": True or False, # If true, enable Cloud CDN for this BackendService.
    907         # 
    908         # When the load balancing scheme is INTERNAL, this field is not used.
    909     "affinityCookieTtlSec": 42, # Lifetime of cookies in seconds if session_affinity is GENERATED_COOKIE. If set to 0, the cookie is non-persistent and lasts only until the end of the browser session (or equivalent). The maximum allowed value for TTL is one day.
    910         # 
    911         # When the load balancing scheme is INTERNAL, this field is not used.
    912     "port": 42, # Deprecated in favor of portName. The TCP port to connect on the backend. The default value is 80.
    913         # 
    914         # This cannot be used for internal load balancing.
    915     "backends": [ # The list of backends that serve this BackendService.
    916       { # Message containing information of one individual backend.
    917         "group": "A String", # The fully-qualified URL of a zonal Instance Group resource. This instance group defines the list of instances that serve traffic. Member virtual machine instances from each instance group must live in the same zone as the instance group itself. No two backends in a backend service are allowed to use same Instance Group resource.
    918             #
    919             # Note that you must specify an Instance Group resource using the fully-qualified URL, rather than a partial URL.
    920             #
    921             # When the BackendService has load balancing scheme INTERNAL, the instance group must be in a zone within the same region as the BackendService.
    922         "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
    923         "maxUtilization": 3.14, # Used when balancingMode is UTILIZATION. This ratio defines the CPU utilization target for the group. The default is 0.8. Valid range is [0.0, 1.0].
    924             #
    925             # This cannot be used for internal load balancing.
    926         "failover": True or False, # This field designates whether this is a failover backend. More than one failover backend can be configured for a given BackendService.
    927         "maxRatePerInstance": 3.14, # The max requests per second (RPS) that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either balancing mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
    928             #
    929             # This cannot be used for internal load balancing.
    930         "maxConnectionsPerInstance": 42, # The max number of simultaneous connections that a single backend instance can handle. This is used to calculate the capacity of the group. Can be used in either CONNECTION or UTILIZATION balancing modes. For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.
    931             #
    932             # This cannot be used for internal load balancing.
    933         "capacityScaler": 3.14, # A multiplier applied to the group's maximum servicing capacity (based on UTILIZATION, RATE or CONNECTION). Default value is 1, which means the group will serve up to 100% of its configured capacity (depending on balancingMode). A setting of 0 means the group is completely drained, offering 0% of its available Capacity. Valid range is [0.0,1.0].
    934             #
    935             # This cannot be used for internal load balancing.
    936         "maxRate": 42, # The max requests per second (RPS) of the group. Can be used with either RATE or UTILIZATION balancing modes, but required if RATE mode. For RATE mode, either maxRate or maxRatePerInstance must be set.
    937             #
    938             # This cannot be used for internal load balancing.
    939         "maxConnections": 42, # The max number of simultaneous connections for the group. Can be used with either CONNECTION or UTILIZATION balancing modes. For CONNECTION mode, either maxConnections or maxConnectionsPerInstance must be set.
    940             #
    941             # This cannot be used for internal load balancing.
    942         "balancingMode": "A String", # Specifies the balancing mode for this backend. For global HTTP(S) or TCP/SSL load balancing, the default is UTILIZATION. Valid values are UTILIZATION, RATE (for HTTP(S)) and CONNECTION (for TCP/SSL).
    943             #
    944             # This cannot be used for internal load balancing.
    945       },
    946     ],
    947     "iap": { # Identity-Aware Proxy
    948       "oauth2ClientId": "A String",
    949       "enabled": True or False,
    950       "oauth2ClientSecret": "A String",
    951       "oauth2ClientSecretSha256": "A String", # [Output Only] SHA256 hash value for the field oauth2_client_secret above.
    952     },
    953     "description": "A String", # An optional description of this resource. Provide this property when you create the resource.
    954     "customRequestHeaders": [ # Headers that the HTTP/S load balancer should add to proxied requests.
    955       "A String",
    956     ],
    957     "securityPolicy": "A String", # [Output Only] The resource URL for the security policy associated with this backend service.
    958     "fingerprint": "A String", # Fingerprint of this resource. A hash of the contents stored in this object. This field is used in optimistic locking. This field will be ignored when inserting a BackendService. An up-to-date fingerprint must be provided in order to update the BackendService.
    959     "portName": "A String", # Name of backend port. The same name should appear in the instance groups referenced by this service. Required when the load balancing scheme is EXTERNAL.
    960         # 
    961         # When the load balancing scheme is INTERNAL, this field is not used.
    962     "kind": "compute#backendService", # [Output Only] Type of resource. Always compute#backendService for backend services.
    963     "name": "A String", # Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression [a-z]([-a-z0-9]*[a-z0-9])? which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
    964     "region": "A String", # [Output Only] URL of the region where the regional backend service resides. This field is not applicable to global backend services.
    965     "timeoutSec": 42, # How many seconds to wait for the backend before considering it a failed request. Default is 30 seconds.
    966     "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
    967   }
    968 
    969   requestId: string, begin_interface: MixerMutationRequestBuilder Request ID to support idempotency.
    970 
    971 Returns:
    972   An object of the form:
    973 
    974     { # An Operation resource, used to manage asynchronous API requests.
    975     "targetId": "A String", # [Output Only] The unique target ID, which identifies a specific incarnation of the target resource.
    976     "clientOperationId": "A String", # [Output Only] Reserved for future use.
    977     "creationTimestamp": "A String", # [Deprecated] This field is deprecated.
    978     "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
    979     "zone": "A String", # [Output Only] The URL of the zone where the operation resides. Only available when performing per-zone operations.
    980     "insertTime": "A String", # [Output Only] The time that this operation was requested. This value is in RFC3339 text format.
    981     "operationType": "A String", # [Output Only] The type of operation, such as insert, update, or delete, and so on.
    982     "httpErrorMessage": "A String", # [Output Only] If the operation fails, this field contains the HTTP error message that was returned, such as NOT FOUND.
    983     "progress": 42, # [Output Only] An optional progress indicator that ranges from 0 to 100. There is no requirement that this be linear or support any granularity of operations. This should not be used to guess when the operation will be complete. This number should monotonically increase as the operation progresses.
    984     "httpErrorStatusCode": 42, # [Output Only] If the operation fails, this field contains the HTTP error status code that was returned. For example, a 404 means the resource was not found.
    985     "statusMessage": "A String", # [Output Only] An optional textual description of the current status of the operation.
    986     "status": "A String", # [Output Only] The status of the operation, which can be one of the following: PENDING, RUNNING, or DONE.
    987     "description": "A String", # [Output Only] A textual description of the operation, which is set when the operation is created.
    988     "warnings": [ # [Output Only] If warning messages are generated during processing of the operation, this field will be populated.
    989       {
    990         "message": "A String", # [Output Only] A human-readable description of the warning code.
    991         "code": "A String", # [Output Only] A warning code, if applicable. For example, Compute Engine returns NO_RESULTS_ON_PAGE if there are no results in the response.
    992         "data": [ # [Output Only] Metadata about this warning in key: value format. For example:
    993             # "data": [ { "key": "scope", "value": "zones/us-east1-d" }
    994           {
    995             "value": "A String", # [Output Only] A warning data value corresponding to the key.
    996             "key": "A String", # [Output Only] A key that provides more detail on the warning being returned. For example, for warnings where there are no results in a list request for a particular zone, this key might be scope and the key value might be the zone name. Other examples might be a key indicating a deprecated resource and a suggested replacement, or a warning about invalid network settings (for example, if an instance attempts to perform IP forwarding but is not enabled for IP forwarding).
    997           },
    998         ],
    999       },
   1000     ],
   1001     "user": "A String", # [Output Only] User who requested the operation, for example: user (a] example.com.
   1002     "startTime": "A String", # [Output Only] The time that this operation was started by the server. This value is in RFC3339 text format.
   1003     "kind": "compute#operation", # [Output Only] Type of the resource. Always compute#operation for Operation resources.
   1004     "name": "A String", # [Output Only] Name of the resource.
   1005     "region": "A String", # [Output Only] The URL of the region where the operation resides. Only available when performing regional operations.
   1006     "error": { # [Output Only] If errors are generated during processing of the operation, this field will be populated.
   1007       "errors": [ # [Output Only] The array of errors encountered while processing this operation.
   1008         {
   1009           "message": "A String", # [Output Only] An optional, human-readable error message.
   1010           "code": "A String", # [Output Only] The error type identifier for this error.
   1011           "location": "A String", # [Output Only] Indicates the field in the request that caused the error. This property is optional.
   1012         },
   1013       ],
   1014     },
   1015     "endTime": "A String", # [Output Only] The time that this operation was completed. This value is in RFC3339 text format.
   1016     "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
   1017     "targetLink": "A String", # [Output Only] The URL of the resource that the operation modifies. For operations related to creating a snapshot, this points to the persistent disk that the snapshot was created from.
   1018   }</pre>
   1019 </div>
   1020 
   1021 </body></html>