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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "chrome/test/chromedriver/logging.h"
      6 
      7 #include <stdio.h>
      8 
      9 #include "base/basictypes.h"
     10 #include "base/command_line.h"
     11 #include "base/json/json_reader.h"
     12 #include "base/logging.h"
     13 #include "base/strings/stringprintf.h"
     14 #include "base/time/time.h"
     15 #include "chrome/test/chromedriver/capabilities.h"
     16 #include "chrome/test/chromedriver/chrome/console_logger.h"
     17 #include "chrome/test/chromedriver/chrome/performance_logger.h"
     18 #include "chrome/test/chromedriver/chrome/status.h"
     19 #include "chrome/test/chromedriver/session.h"
     20 
     21 #if defined(OS_POSIX)
     22 #include <fcntl.h>
     23 #include <unistd.h>
     24 #endif
     25 
     26 
     27 namespace {
     28 
     29 Log::Level g_log_level = Log::kWarning;
     30 
     31 int64 g_start_time = 0;
     32 
     33 // Array indices are the Log::Level enum values.
     34 const char* kLevelToName[] = {
     35   "ALL",  // kAll
     36   "DEBUG",  // kDebug
     37   "INFO",  // kInfo
     38   "WARNING",  // kWarning
     39   "SEVERE",  // kError
     40   "OFF",  // kOff
     41 };
     42 
     43 const char* LevelToName(Log::Level level) {
     44   const int index = level - Log::kAll;
     45   CHECK_GE(index, 0);
     46   CHECK_LT(static_cast<size_t>(index), arraysize(kLevelToName));
     47   return kLevelToName[index];
     48 }
     49 
     50 struct LevelPair {
     51   const char* name;
     52   Log::Level level;
     53 };
     54 
     55 const LevelPair kNameToLevel[] = {
     56     {"ALL", Log::kAll},
     57     {"DEBUG", Log::kDebug},
     58     {"INFO", Log::kInfo},
     59     {"WARNING", Log::kWarning},
     60     {"SEVERE", Log::kError},
     61     {"OFF", Log::kOff},
     62 };
     63 
     64 Log::Level GetLevelFromSeverity(int severity) {
     65   switch (severity) {
     66     case logging::LOG_FATAL:
     67     case logging::LOG_ERROR_REPORT:
     68     case logging::LOG_ERROR:
     69       return Log::kError;
     70     case logging::LOG_WARNING:
     71       return Log::kWarning;
     72     case logging::LOG_INFO:
     73       return Log::kInfo;
     74     case logging::LOG_VERBOSE:
     75     default:
     76       return Log::kDebug;
     77   }
     78 }
     79 
     80 WebDriverLog* GetSessionLog() {
     81   Session* session = GetThreadLocalSession();
     82   if (!session)
     83     return NULL;
     84   return session->driver_log.get();
     85 }
     86 
     87 bool InternalIsVLogOn(int vlog_level) {
     88   WebDriverLog* session_log = GetSessionLog();
     89   Log::Level session_level = session_log ? session_log->min_level() : Log::kOff;
     90   Log::Level level = g_log_level < session_level ? g_log_level : session_level;
     91   return GetLevelFromSeverity(vlog_level * -1) >= level;
     92 }
     93 
     94 bool HandleLogMessage(int severity,
     95                       const char* file,
     96                       int line,
     97                       size_t message_start,
     98                       const std::string& str) {
     99   Log::Level level = GetLevelFromSeverity(severity);
    100   std::string message = str.substr(message_start);
    101 
    102   if (level >= g_log_level) {
    103     const char* level_name = LevelToName(level);
    104     std::string entry = base::StringPrintf(
    105         "[%.3lf][%s]: %s",
    106         base::TimeDelta(base::TimeTicks::Now() -
    107                         base::TimeTicks::FromInternalValue(g_start_time))
    108             .InSecondsF(),
    109         level_name,
    110         message.c_str());
    111     fprintf(stderr, "%s", entry.c_str());
    112     fflush(stderr);
    113   }
    114 
    115   WebDriverLog* session_log = GetSessionLog();
    116   if (session_log)
    117     session_log->AddEntry(level, message);
    118 
    119   return true;
    120 }
    121 
    122 }  // namespace
    123 
    124 const char WebDriverLog::kBrowserType[] = "browser";
    125 const char WebDriverLog::kDriverType[] = "driver";
    126 const char WebDriverLog::kPerformanceType[] = "performance";
    127 
    128 bool WebDriverLog::NameToLevel(const std::string& name, Log::Level* out_level) {
    129   for (size_t i = 0; i < arraysize(kNameToLevel); ++i) {
    130     if (name == kNameToLevel[i].name) {
    131       *out_level = kNameToLevel[i].level;
    132       return true;
    133     }
    134   }
    135   return false;
    136 }
    137 
    138 WebDriverLog::WebDriverLog(const std::string& type, Log::Level min_level)
    139     : type_(type), min_level_(min_level), entries_(new base::ListValue()) {
    140 }
    141 
    142 WebDriverLog::~WebDriverLog() {
    143   VLOG(1) << "Log type '" << type_ << "' lost "
    144           << entries_->GetSize() << " entries on destruction";
    145 }
    146 
    147 scoped_ptr<base::ListValue> WebDriverLog::GetAndClearEntries() {
    148   scoped_ptr<base::ListValue> ret(entries_.release());
    149   entries_.reset(new base::ListValue());
    150   return ret.Pass();
    151 }
    152 
    153 void WebDriverLog::AddEntryTimestamped(const base::Time& timestamp,
    154                                        Log::Level level,
    155                                        const std::string& source,
    156                                        const std::string& message) {
    157   if (level < min_level_)
    158     return;
    159 
    160   scoped_ptr<base::DictionaryValue> log_entry_dict(new base::DictionaryValue());
    161   log_entry_dict->SetDouble("timestamp",
    162                             static_cast<int64>(timestamp.ToJsTime()));
    163   log_entry_dict->SetString("level", LevelToName(level));
    164   if (!source.empty())
    165     log_entry_dict->SetString("source", source);
    166   log_entry_dict->SetString("message", message);
    167   entries_->Append(log_entry_dict.release());
    168 }
    169 
    170 const std::string& WebDriverLog::type() const {
    171   return type_;
    172 }
    173 
    174 void WebDriverLog::set_min_level(Level min_level) {
    175   min_level_ = min_level;
    176 }
    177 
    178 Log::Level WebDriverLog::min_level() const {
    179   return min_level_;
    180 }
    181 
    182 bool InitLogging() {
    183   InitLogging(&InternalIsVLogOn);
    184   g_start_time = base::TimeTicks::Now().ToInternalValue();
    185 
    186   CommandLine* cmd_line = CommandLine::ForCurrentProcess();
    187   if (cmd_line->HasSwitch("log-path")) {
    188     g_log_level = Log::kInfo;
    189     base::FilePath log_path = cmd_line->GetSwitchValuePath("log-path");
    190 #if defined(OS_WIN)
    191     FILE* redir_stderr = _wfreopen(log_path.value().c_str(), L"w", stderr);
    192 #else
    193     FILE* redir_stderr = freopen(log_path.value().c_str(), "w", stderr);
    194 #endif
    195     if (!redir_stderr) {
    196       printf("Failed to redirect stderr to log file.\n");
    197       return false;
    198     }
    199   }
    200   if (cmd_line->HasSwitch("silent"))
    201     g_log_level = Log::kOff;
    202 
    203   if (cmd_line->HasSwitch("verbose"))
    204     g_log_level = Log::kAll;
    205 
    206   // Turn on VLOG for chromedriver. This is parsed during logging::InitLogging.
    207   cmd_line->AppendSwitchASCII("vmodule", "*/chrome/test/chromedriver/*=3");
    208 
    209   logging::SetMinLogLevel(logging::LOG_WARNING);
    210   logging::SetLogItems(false,   // enable_process_id
    211                        false,   // enable_thread_id
    212                        false,   // enable_timestamp
    213                        false);  // enable_tickcount
    214   logging::SetLogMessageHandler(&HandleLogMessage);
    215 
    216   logging::LoggingSettings logging_settings;
    217   logging_settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
    218   return logging::InitLogging(logging_settings);
    219 }
    220 
    221 Status CreateLogs(const Capabilities& capabilities,
    222                   ScopedVector<WebDriverLog>* out_logs,
    223                   ScopedVector<DevToolsEventListener>* out_listeners) {
    224   ScopedVector<WebDriverLog> logs;
    225   ScopedVector<DevToolsEventListener> listeners;
    226   Log::Level browser_log_level = Log::kWarning;
    227   const LoggingPrefs& prefs = capabilities.logging_prefs;
    228 
    229   for (LoggingPrefs::const_iterator iter = prefs.begin();
    230        iter != prefs.end();
    231        ++iter) {
    232     std::string type = iter->first;
    233     Log::Level level = iter->second;
    234     if (type == WebDriverLog::kPerformanceType) {
    235       if (level != Log::kOff) {
    236         WebDriverLog* log = new WebDriverLog(type, Log::kAll);
    237         logs.push_back(log);
    238         listeners.push_back(new PerformanceLogger(log));
    239       }
    240     } else if (type == WebDriverLog::kBrowserType) {
    241       browser_log_level = level;
    242     } else if (type != WebDriverLog::kDriverType) {
    243       // Driver "should" ignore unrecognized log types, per Selenium tests.
    244       // For example the Java client passes the "client" log type in the caps,
    245       // which the server should never provide.
    246       LOG(WARNING) << "Ignoring unrecognized log type: " << type;
    247     }
    248   }
    249   // Create "browser" log -- should always exist.
    250   WebDriverLog* browser_log =
    251       new WebDriverLog(WebDriverLog::kBrowserType, browser_log_level);
    252   logs.push_back(browser_log);
    253   // If the level is OFF, don't even bother listening for DevTools events.
    254   if (browser_log_level != Log::kOff)
    255     listeners.push_back(new ConsoleLogger(browser_log));
    256 
    257   out_logs->swap(logs);
    258   out_listeners->swap(listeners);
    259   return Status(kOk);
    260 }
    261