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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/extensions/extension_activity_log.h"
#include "base/command_line.h"
#include "base/logging.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/extensions/extension.h"
ExtensionActivityLog::ExtensionActivityLog() {
log_activity_to_stdout_ = CommandLine::ForCurrentProcess()->
HasSwitch(switches::kEnableExtensionActivityLogging);
}
ExtensionActivityLog::~ExtensionActivityLog() {
}
// static
ExtensionActivityLog* ExtensionActivityLog::GetInstance() {
return Singleton<ExtensionActivityLog>::get();
}
void ExtensionActivityLog::AddObserver(
const Extension* extension,
ExtensionActivityLog::Observer* observer) {
base::AutoLock scoped_lock(lock_);
if (observers_.count(extension) == 0) {
observers_[extension] = new ObserverListThreadSafe<Observer>;
}
observers_[extension]->AddObserver(observer);
}
void ExtensionActivityLog::RemoveObserver(
const Extension* extension,
ExtensionActivityLog::Observer* observer) {
base::AutoLock scoped_lock(lock_);
if (observers_.count(extension) == 1) {
observers_[extension]->RemoveObserver(observer);
}
}
bool ExtensionActivityLog::HasObservers(const Extension* extension) const {
base::AutoLock scoped_lock(lock_);
// We also return true if extension activity logging is enabled since in that
// case this class is observing all extensions.
return observers_.count(extension) > 0 || log_activity_to_stdout_;
}
void ExtensionActivityLog::Log(const Extension* extension,
Activity activity,
const std::string& msg) const {
base::AutoLock scoped_lock(lock_);
ObserverMap::const_iterator iter = observers_.find(extension);
if (iter != observers_.end()) {
iter->second->Notify(&Observer::OnExtensionActivity, extension, activity,
msg);
}
if (log_activity_to_stdout_) {
LOG(INFO) << extension->id() + ":" + ActivityToString(activity) + ":" + msg;
}
}
// static
const char* ExtensionActivityLog::ActivityToString(Activity activity) {
switch (activity) {
case ExtensionActivityLog::ACTIVITY_EXTENSION_API_CALL:
return "api_call";
case ExtensionActivityLog::ACTIVITY_EXTENSION_API_BLOCK:
return "api_block";
default:
NOTREACHED();
return "";
}
}
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