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// Copyright 2013 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/api/log_private/syslog_parser.h"
#include <string>
#include <vector>
#include "base/logging.h"
#include "base/memory/linked_ptr.h"
#include "base/memory/singleton.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_tokenizer.h"
#include "base/time/time.h"
#include "chrome/browser/extensions/api/log_private/filter_handler.h"
#include "chrome/browser/extensions/api/log_private/log_parser.h"
#include "chrome/browser/extensions/api/log_private/log_private_api.h"
#include "chrome/common/extensions/api/log_private.h"
namespace extensions {
namespace {
const char kProcessInfoDelimiters[] = "[]:";
} // namespace
SyslogParser::SyslogParser() {}
SyslogParser::~SyslogParser() {}
SyslogParser::Error SyslogParser::ParseEntry(
const std::string& input,
std::vector<linked_ptr<api::log_private::LogEntry> >* output,
FilterHandler* filter_handler) const {
linked_ptr<api::log_private::LogEntry> entry(new api::log_private::LogEntry);
base::StringTokenizer tokenizer(input, " ");
if (!tokenizer.GetNext()) {
LOG(ERROR)
<< "Error when parsing data. Expect: At least 2 tokens. Actual: 0";
return TOKENIZE_ERROR;
}
std::string time = tokenizer.token();
if (ParseTime(time, &(entry->timestamp)) != SyslogParser::SUCCESS) {
return SyslogParser::PARSE_ERROR;
}
if (!tokenizer.GetNext()) {
LOG(ERROR)
<< "Error when parsing data. Expect: At least 2 tokens. Actual: 1";
return TOKENIZE_ERROR;
}
ParseProcess(tokenizer.token(), entry.get());
ParseLevel(input, entry.get());
entry->full_entry = input;
if (filter_handler->IsValidLogEntry(*(entry.get()))) {
output->push_back(entry);
}
return SyslogParser::SUCCESS;
}
SyslogParser::Error SyslogParser::ParseTime(const std::string& input,
double* output) const {
base::Time parsed_time;
if (!base::Time::FromString(input.c_str(), &parsed_time)) {
LOG(ERROR) << "Error when parsing time";
return SyslogParser::PARSE_ERROR;
}
*output = parsed_time.ToJsTime();
return SyslogParser::SUCCESS;
}
SyslogParser::Error SyslogParser::ParseProcess(
const std::string& input,
api::log_private::LogEntry* entry) const {
base::StringTokenizer tokenizer(input, kProcessInfoDelimiters);
if (!tokenizer.GetNext()) {
LOG(ERROR)
<< "Error when parsing data. Expect: At least 1 token. Actual: 0";
return SyslogParser::PARSE_ERROR;
}
entry->process = tokenizer.token();
entry->process_id = "unknown";
if (tokenizer.GetNext()) {
std::string token = tokenizer.token();
int tmp;
if (base::StringToInt(token, &tmp)) {
entry->process_id = token;
}
}
return SyslogParser::SUCCESS;
}
void SyslogParser::ParseLevel(const std::string& input,
api::log_private::LogEntry* entry) const {
if (input.find("ERROR") != std::string::npos) {
entry->level = "error";
} else if (input.find("WARN") != std::string::npos) {
entry->level = "warning";
} else if (input.find("INFO") != std::string::npos) {
entry->level = "info";
} else {
entry->level = "unknown";
}
}
} // namespace extensions
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