| /* |
| * Copyright 2010 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| // Author: sligocki@google.com (Shawn Ligocki) |
| |
| #ifndef NET_INSTAWEB_HTTP_PUBLIC_HTTP_DUMP_URL_ASYNC_WRITER_H_ |
| #define NET_INSTAWEB_HTTP_PUBLIC_HTTP_DUMP_URL_ASYNC_WRITER_H_ |
| |
| #include "net/instaweb/http/public/url_async_fetcher.h" |
| #include "net/instaweb/http/public/http_dump_url_fetcher.h" |
| #include "pagespeed/kernel/base/basictypes.h" |
| #include "pagespeed/kernel/base/string.h" |
| #include "pagespeed/kernel/base/string_util.h" |
| |
| namespace net_instaweb { |
| |
| class AsyncFetch; |
| class FileSystem; |
| class MessageHandler; |
| class Timer; |
| |
| // HttpDumpWriter checks to see whether the HTTP dump is available on the |
| // filesystem. If not, it fetches it from another fetcher (e.g. one that |
| // uses the network) and writes it to the filesystem so that HttpDumpFetcher |
| // can find it. |
| class HttpDumpUrlAsyncWriter : public UrlAsyncFetcher { |
| public: |
| HttpDumpUrlAsyncWriter(const StringPiece& root_dir, |
| UrlAsyncFetcher* base_fetcher, |
| FileSystem* file_system, |
| Timer* timer) |
| : dump_fetcher_(root_dir, file_system, timer), |
| base_fetcher_(base_fetcher), |
| file_system_(file_system), |
| accept_gzip_(true) { |
| root_dir.CopyToString(&root_dir_); |
| } |
| virtual ~HttpDumpUrlAsyncWriter(); |
| |
| virtual bool SupportsHttps() const { return base_fetcher_->SupportsHttps(); } |
| |
| // This is a synchronous/blocking implementation. |
| virtual void Fetch(const GoogleString& url, |
| MessageHandler* handler, |
| AsyncFetch* base_fetch); |
| |
| // Controls whether we will request and save gzipped content to the |
| // file system. Note that http_dump_url_fetcher will inflate on |
| // read if its caller does not want gzipped output. |
| void set_accept_gzip(bool x) { accept_gzip_ = x; } |
| |
| // Print URLs each time they are fetched. |
| void set_print_urls(bool on) { dump_fetcher_.set_print_urls(on); } |
| |
| private: |
| // Helper class to manage individual fetchs. |
| class DumpFetch; |
| |
| HttpDumpUrlFetcher dump_fetcher_; |
| // Used to fetch urls that aren't in the dump yet. |
| UrlAsyncFetcher* base_fetcher_; |
| GoogleString root_dir_; // Root directory of the HTTP dumps. |
| FileSystem* file_system_; |
| bool accept_gzip_; |
| |
| DISALLOW_COPY_AND_ASSIGN(HttpDumpUrlAsyncWriter); |
| }; |
| |
| } // namespace net_instaweb |
| |
| #endif // NET_INSTAWEB_HTTP_PUBLIC_HTTP_DUMP_URL_ASYNC_WRITER_H_ |