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Unified Diff: chrome/browser/chromeos/system_logs/single_log_source.cc

Issue 2883553002: Revert of Add SingleLogSource to system_logs sources (Closed)
Patch Set: Created 3 years, 7 months ago
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Index: chrome/browser/chromeos/system_logs/single_log_source.cc
diff --git a/chrome/browser/chromeos/system_logs/single_log_source.cc b/chrome/browser/chromeos/system_logs/single_log_source.cc
deleted file mode 100644
index 4359af8d3703f45942d4643130db28845447574c..0000000000000000000000000000000000000000
--- a/chrome/browser/chromeos/system_logs/single_log_source.cc
+++ /dev/null
@@ -1,88 +0,0 @@
-// Copyright 2017 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/chromeos/system_logs/single_log_source.h"
-
-#include "base/bind.h"
-#include "base/files/file_path.h"
-#include "base/task_scheduler/post_task.h"
-#include "content/public/browser/browser_thread.h"
-
-namespace system_logs {
-
-namespace {
-
-// Converts a logs source type to the corresponding filename. In the future, if
-// non-file source types are added, this function should return an empty string.
-std::string GetLogFileSourceFilename(SingleLogSource::SupportedSource source) {
- switch (source) {
- case SingleLogSource::SupportedSource::kMessages:
- return "/var/log/messages";
- case SingleLogSource::SupportedSource::kUiLatest:
- return "/var/log/ui/ui.LATEST";
- }
-}
-
-} // namespace
-
-SingleLogSource::SingleLogSource(SupportedSource source)
- : SystemLogsSource(GetLogFileSourceFilename(source)),
- num_bytes_read_(0),
- weak_ptr_factory_(this) {}
-
-SingleLogSource::~SingleLogSource() {}
-
-void SingleLogSource::Fetch(const SysLogsSourceCallback& callback) {
- DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
- DCHECK(!callback.is_null());
-
- SystemLogsResponse* response = new SystemLogsResponse;
- base::PostTaskWithTraitsAndReply(
- FROM_HERE,
- base::TaskTraits(base::MayBlock(), base::TaskPriority::BACKGROUND),
- base::Bind(&SingleLogSource::ReadFile, weak_ptr_factory_.GetWeakPtr(),
- response),
- base::Bind(callback, base::Owned(response)));
-}
-
-void SingleLogSource::ReadFile(SystemLogsResponse* result) {
- // Attempt to open the file if it was not previously opened.
- if (!file_.IsValid()) {
- file_.Initialize(base::FilePath(source_name()),
- base::File::FLAG_OPEN | base::File::FLAG_READ);
- if (!file_.IsValid())
- return;
- }
-
- // Check for file size reset.
- const size_t length = file_.GetLength();
- if (length < num_bytes_read_) {
- num_bytes_read_ = 0;
- file_.Seek(base::File::FROM_BEGIN, 0);
- }
-
- // Read from file until end.
- const size_t size_to_read = length - num_bytes_read_;
- std::string result_string;
- result_string.resize(size_to_read);
- const size_t size_read =
- file_.ReadAtCurrentPos(&result_string[0], size_to_read);
- result_string.resize(size_read);
-
- // The reader may only read complete lines.
- if (result_string.empty() || result_string.back() != '\n') {
- // If an incomplete line was read, reset the file read offset to before the
- // most recent read.
- file_.Seek(base::File::FROM_CURRENT, -size_read);
- result->emplace(source_name(), "");
- return;
- }
-
- num_bytes_read_ += size_read;
-
- // Pass it back to the callback.
- result->emplace(source_name(), anonymizer_.Anonymize(result_string));
-}
-
-} // namespace system_logs

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