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      1 // Copyright 2013 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/browser/chromeos/system_logs/system_logs_fetcher_base.h"
      6 
      7 #include "base/bind.h"
      8 #include "base/bind_helpers.h"
      9 #include "chrome/browser/chromeos/system_logs/chrome_internal_log_source.h"
     10 #include "chrome/browser/chromeos/system_logs/command_line_log_source.h"
     11 #include "chrome/browser/chromeos/system_logs/dbus_log_source.h"
     12 #include "chrome/browser/chromeos/system_logs/debug_daemon_log_source.h"
     13 #include "chrome/browser/chromeos/system_logs/lsb_release_log_source.h"
     14 #include "chrome/browser/chromeos/system_logs/memory_details_log_source.h"
     15 #include "chrome/browser/chromeos/system_logs/network_event_log_source.h"
     16 #include "chrome/browser/chromeos/system_logs/touch_log_source.h"
     17 #include "content/public/browser/browser_thread.h"
     18 
     19 using content::BrowserThread;
     20 
     21 namespace chromeos {
     22 
     23 SystemLogsFetcherBase::SystemLogsFetcherBase()
     24     : response_(new SystemLogsResponse),
     25       num_pending_requests_(0) {
     26 }
     27 
     28 SystemLogsFetcherBase::~SystemLogsFetcherBase() {}
     29 
     30 void SystemLogsFetcherBase::Fetch(const SysLogsFetcherCallback& callback) {
     31   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     32   DCHECK(callback_.is_null());
     33   DCHECK(!callback.is_null());
     34 
     35   callback_ = callback;
     36   for (size_t i = 0; i < data_sources_.size(); ++i) {
     37     data_sources_[i]->Fetch(base::Bind(&SystemLogsFetcherBase::AddResponse,
     38                                        AsWeakPtr()));
     39   }
     40 }
     41 
     42 void SystemLogsFetcherBase::AddResponse(SystemLogsResponse* response) {
     43   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     44 
     45   for (SystemLogsResponse::const_iterator it = response->begin();
     46        it != response->end();
     47        ++it) {
     48     // It is an error to insert an element with a pre-existing key.
     49     bool ok = response_->insert(*it).second;
     50     DCHECK(ok) << "Duplicate key found: " << it->first;
     51   }
     52 
     53   --num_pending_requests_;
     54   if (num_pending_requests_ > 0)
     55     return;
     56 
     57   callback_.Run(response_.Pass());
     58   BrowserThread::DeleteSoon(BrowserThread::UI, FROM_HERE, this);
     59 }
     60 
     61 }  // namespace chromeos
     62