1 /* 2 * Copyright (c) 2006 Niels Provos <provos (at) citi.umich.edu> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 #ifndef _EVRPC_INTERNAL_H_ 28 #define _EVRPC_INTERNAL_H_ 29 30 #include "http-internal.h" 31 32 struct evrpc; 33 34 #define EVRPC_URI_PREFIX "/.rpc." 35 36 struct evrpc_hook { 37 TAILQ_ENTRY(evrpc_hook) (next); 38 39 /* returns -1; if the rpc should be aborted, is allowed to rewrite */ 40 int (*process)(struct evhttp_request *, struct evbuffer *, void *); 41 void *process_arg; 42 }; 43 44 TAILQ_HEAD(evrpc_hook_list, evrpc_hook); 45 46 /* 47 * this is shared between the base and the pool, so that we can reuse 48 * the hook adding functions; we alias both evrpc_pool and evrpc_base 49 * to this common structure. 50 */ 51 struct _evrpc_hooks { 52 /* hooks for processing outbound and inbound rpcs */ 53 struct evrpc_hook_list in_hooks; 54 struct evrpc_hook_list out_hooks; 55 }; 56 57 #define input_hooks common.in_hooks 58 #define output_hooks common.out_hooks 59 60 struct evrpc_base { 61 struct _evrpc_hooks common; 62 63 /* the HTTP server under which we register our RPC calls */ 64 struct evhttp* http_server; 65 66 /* a list of all RPCs registered with us */ 67 TAILQ_HEAD(evrpc_list, evrpc) registered_rpcs; 68 }; 69 70 struct evrpc_req_generic; 71 void evrpc_reqstate_free(struct evrpc_req_generic* rpc_state); 72 73 /* A pool for holding evhttp_connection objects */ 74 struct evrpc_pool { 75 struct _evrpc_hooks common; 76 77 struct event_base *base; 78 79 struct evconq connections; 80 81 int timeout; 82 83 TAILQ_HEAD(evrpc_requestq, evrpc_request_wrapper) requests; 84 }; 85 86 87 #endif /* _EVRPC_INTERNAL_H_ */ 88
