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// Copyright (c) 2012 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 <string>
#include "base/command_line.h"
#include "base/logging.h"
#include "base/string_util.h"
#include "base/stringprintf.h"
#include "base/threading/thread.h"
#include "base/threading/thread_checker.h"
#include "base/time.h"
#include "base/time/clock.h"
#include "chrome/browser/extensions/activity_database.h"
#include "chrome/common/chrome_switches.h"
#include "sql/transaction.h"
#if defined(OS_MACOSX)
#include "base/mac/mac_util.h"
#endif
using content::BrowserThread;
namespace {
bool SortActionsByTime(const scoped_refptr<extensions::Action> a,
const scoped_refptr<extensions::Action> b) {
return a->time() > b->time();
}
} // namespace
namespace extensions {
ActivityDatabase::ActivityDatabase()
: testing_clock_(NULL),
initialized_(false) {
// We don't batch commits when in testing mode.
batch_mode_ = !(CommandLine::ForCurrentProcess()->
HasSwitch(switches::kEnableExtensionActivityLogTesting));
}
ActivityDatabase::~ActivityDatabase() {}
void ActivityDatabase::SetErrorDelegate(sql::ErrorDelegate* error_delegate) {
db_.set_error_delegate(error_delegate);
}
void ActivityDatabase::Init(const base::FilePath& db_name) {
if (BrowserThread::IsMessageLoopValid(BrowserThread::DB))
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
db_.set_page_size(4096);
db_.set_cache_size(32);
if (!db_.Open(db_name)) {
LOG(ERROR) << db_.GetErrorMessage();
return LogInitFailure();
}
// Wrap the initialization in a transaction so that the db doesn't
// get corrupted if init fails/crashes.
sql::Transaction committer(&db_);
if (!committer.Begin())
return LogInitFailure();
#if defined(OS_MACOSX)
// Exclude the database from backups.
base::mac::SetFileBackupExclusion(db_name);
#endif
db_.Preload();
// Create the DOMAction database.
if (!DOMAction::InitializeTable(&db_))
return LogInitFailure();
// Create the APIAction database.
if (!APIAction::InitializeTable(&db_))
return LogInitFailure();
// Create the BlockedAction database.
if (!BlockedAction::InitializeTable(&db_))
return LogInitFailure();
sql::InitStatus stat = committer.Commit() ? sql::INIT_OK : sql::INIT_FAILURE;
if (stat != sql::INIT_OK)
return LogInitFailure();
initialized_ = true;
timer_.Start(FROM_HERE,
base::TimeDelta::FromMinutes(2),
this,
&ActivityDatabase::RecordBatchedActions);
}
void ActivityDatabase::LogInitFailure() {
LOG(ERROR) << "Couldn't initialize the activity log database.";
}
void ActivityDatabase::RecordAction(scoped_refptr<Action> action) {
if (initialized_) {
if (batch_mode_)
batched_actions_.push_back(action);
else
action->Record(&db_);
}
}
void ActivityDatabase::RecordBatchedActions() {
std::vector<scoped_refptr<Action> >::size_type i;
for (i = 0; i != batched_actions_.size(); ++i) {
batched_actions_.at(i)->Record(&db_);
}
batched_actions_.clear();
}
void ActivityDatabase::SetBatchModeForTesting(bool batch_mode) {
if (batch_mode && !batch_mode_) {
timer_.Start(FROM_HERE,
base::TimeDelta::FromMinutes(2),
this,
&ActivityDatabase::RecordBatchedActions);
} else if (!batch_mode && batch_mode_) {
timer_.Stop();
RecordBatchedActions();
}
batch_mode_ = batch_mode;
}
scoped_ptr<std::vector<scoped_refptr<Action> > > ActivityDatabase::GetActions(
const std::string& extension_id, const int days_ago) {
if (BrowserThread::IsMessageLoopValid(BrowserThread::DB))
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::DB));
DCHECK_GE(days_ago, 0);
scoped_ptr<std::vector<scoped_refptr<Action> > >
actions(new std::vector<scoped_refptr<Action> >());
if (!initialized_)
return actions.Pass();
// Compute the time bounds for that day.
base::Time morning_midnight = testing_clock_ ?
testing_clock_->Now().LocalMidnight() :
base::Time::Now().LocalMidnight();
int64 early_bound = 0;
int64 late_bound = 0;
if (days_ago == 0) {
early_bound = morning_midnight.ToInternalValue();
late_bound = base::Time::Max().ToInternalValue();
} else {
base::Time early_time = morning_midnight -
base::TimeDelta::FromDays(days_ago);
base::Time late_time = morning_midnight -
base::TimeDelta::FromDays(days_ago-1);
early_bound = early_time.ToInternalValue();
late_bound = late_time.ToInternalValue();
}
// Get the DOMActions.
std::string dom_str = base::StringPrintf("SELECT * FROM %s "
"WHERE extension_id=? AND "
"time>? AND time<=?",
DOMAction::kTableName);
sql::Statement dom_statement(db_.GetCachedStatement(SQL_FROM_HERE,
dom_str.c_str()));
dom_statement.BindString(0, extension_id);
dom_statement.BindInt64(1, early_bound);
dom_statement.BindInt64(2, late_bound);
while (dom_statement.Step()) {
scoped_refptr<DOMAction> action = new DOMAction(dom_statement);
actions->push_back(action);
}
// Get the APIActions.
std::string api_str = base::StringPrintf("SELECT * FROM %s "
"WHERE extension_id=? AND "
"time>? AND time<=?",
APIAction::kTableName);
sql::Statement api_statement(db_.GetCachedStatement(SQL_FROM_HERE,
api_str.c_str()));
api_statement.BindString(0, extension_id);
api_statement.BindInt64(1, early_bound);
api_statement.BindInt64(2, late_bound);
while (api_statement.Step()) {
scoped_refptr<APIAction> action = new APIAction(api_statement);
actions->push_back(action);
}
// Get the BlockedActions.
std::string blocked_str = base::StringPrintf("SELECT * FROM %s "
"WHERE extension_id=? AND "
"time>? AND time<=?",
BlockedAction::kTableName);
sql::Statement blocked_statement(db_.GetCachedStatement(SQL_FROM_HERE,
blocked_str.c_str()));
blocked_statement.BindString(0, extension_id);
blocked_statement.BindInt64(1, early_bound);
blocked_statement.BindInt64(2, late_bound);
while (blocked_statement.Step()) {
scoped_refptr<BlockedAction> action = new BlockedAction(blocked_statement);
actions->push_back(action);
}
// Sort by time (from newest to oldest).
std::sort(actions->begin(), actions->end(), SortActionsByTime);
return actions.Pass();
}
void ActivityDatabase::BeginTransaction() {
db_.BeginTransaction();
}
void ActivityDatabase::CommitTransaction() {
db_.CommitTransaction();
}
void ActivityDatabase::RollbackTransaction() {
db_.RollbackTransaction();
}
bool ActivityDatabase::Raze() {
return db_.Raze();
}
void ActivityDatabase::Close() {
timer_.Stop();
RecordBatchedActions();
db_.Close();
delete this;
}
void ActivityDatabase::KillDatabase() {
timer_.Stop();
db_.RazeAndClose();
}
void ActivityDatabase::SetClockForTesting(base::Clock* clock) {
testing_clock_ = clock;
}
void ActivityDatabase::RecordBatchedActionsWhileTesting() {
RecordBatchedActions();
timer_.Stop();
}
void ActivityDatabase::SetTimerForTesting(int ms) {
timer_.Stop();
timer_.Start(FROM_HERE,
base::TimeDelta::FromMilliseconds(ms),
this,
&ActivityDatabase::RecordBatchedActionsWhileTesting);
}
} // namespace extensions
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