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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_URL_FETCHER_H_ | 5 #ifndef CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_URL_FETCHER_H_ |
| 6 #define CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_URL_FETCHER_H_ | 6 #define CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_URL_FETCHER_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include <string> | 9 #include <string> |
| 10 | 10 |
| 11 #include "base/scoped_ptr.h" | 11 #include "base/scoped_ptr.h" |
| 12 #include "chrome/common/net/url_fetcher.h" | 12 #include "chrome/common/net/url_fetcher.h" |
| 13 | 13 |
| 14 class DictionaryValue; | 14 class DictionaryValue; |
| 15 class GURL; | 15 class GURL; |
| 16 |
| 17 namespace net { |
| 16 class URLRequestStatus; | 18 class URLRequestStatus; |
| 19 } // namespace net |
| 17 | 20 |
| 18 // A wrapper around URLFetcher for CloudPrint. URLFetcher applies retry logic | 21 // A wrapper around URLFetcher for CloudPrint. URLFetcher applies retry logic |
| 19 // only on HTTP response codes >= 500. In the cloud print case, we want to | 22 // only on HTTP response codes >= 500. In the cloud print case, we want to |
| 20 // retry on all network errors. In addition, we want to treat non-JSON responses | 23 // retry on all network errors. In addition, we want to treat non-JSON responses |
| 21 // (for all CloudPrint APIs that expect JSON responses) as errors and they | 24 // (for all CloudPrint APIs that expect JSON responses) as errors and they |
| 22 // must also be retried. | 25 // must also be retried. |
| 23 class CloudPrintURLFetcher | 26 class CloudPrintURLFetcher |
| 24 : public base::RefCountedThreadSafe<CloudPrintURLFetcher>, | 27 : public base::RefCountedThreadSafe<CloudPrintURLFetcher>, |
| 25 public URLFetcher::Delegate { | 28 public URLFetcher::Delegate { |
| 26 public: | 29 public: |
| 27 enum ResponseAction { | 30 enum ResponseAction { |
| 28 CONTINUE_PROCESSING, | 31 CONTINUE_PROCESSING, |
| 29 STOP_PROCESSING, | 32 STOP_PROCESSING, |
| 30 RETRY_REQUEST, | 33 RETRY_REQUEST, |
| 31 }; | 34 }; |
| 32 class Delegate { | 35 class Delegate { |
| 33 public: | 36 public: |
| 34 virtual ~Delegate() { } | 37 virtual ~Delegate() { } |
| 35 // Override this to handle the raw response as it is available. No response | 38 // Override this to handle the raw response as it is available. No response |
| 36 // error checking is done before this method is called. If the delegate | 39 // error checking is done before this method is called. If the delegate |
| 37 // returns CONTINUE_PROCESSING, we will then check for network | 40 // returns CONTINUE_PROCESSING, we will then check for network |
| 38 // errors. Most implementations will not override this. | 41 // errors. Most implementations will not override this. |
| 39 virtual ResponseAction HandleRawResponse(const URLFetcher* source, | 42 virtual ResponseAction HandleRawResponse( |
| 40 const GURL& url, | 43 const URLFetcher* source, |
| 41 const URLRequestStatus& status, | 44 const GURL& url, |
| 42 int response_code, | 45 const net::URLRequestStatus& status, |
| 43 const ResponseCookies& cookies, | 46 int response_code, |
| 44 const std::string& data) { | 47 const ResponseCookies& cookies, |
| 48 const std::string& data) { |
| 45 return CONTINUE_PROCESSING; | 49 return CONTINUE_PROCESSING; |
| 46 } | 50 } |
| 47 // This will be invoked only if HandleRawResponse returns | 51 // This will be invoked only if HandleRawResponse returns |
| 48 // CONTINUE_PROCESSING AND if there are no network errors and the HTTP | 52 // CONTINUE_PROCESSING AND if there are no network errors and the HTTP |
| 49 // response code is 200. The delegate implementation returns | 53 // response code is 200. The delegate implementation returns |
| 50 // CONTINUE_PROCESSING if it does not want to handle the raw data itself. | 54 // CONTINUE_PROCESSING if it does not want to handle the raw data itself. |
| 51 // Handling the raw data is needed when the expected response is NOT JSON | 55 // Handling the raw data is needed when the expected response is NOT JSON |
| 52 // (like in the case of a print ticket response or a print job download | 56 // (like in the case of a print ticket response or a print job download |
| 53 // response). | 57 // response). |
| 54 virtual ResponseAction HandleRawData(const URLFetcher* source, | 58 virtual ResponseAction HandleRawData(const URLFetcher* source, |
| (...skipping 25 matching lines...) Expand all Loading... |
| 80 int max_retries); | 84 int max_retries); |
| 81 void StartPostRequest(const GURL& url, | 85 void StartPostRequest(const GURL& url, |
| 82 Delegate* delegate, | 86 Delegate* delegate, |
| 83 const std::string& auth_token, | 87 const std::string& auth_token, |
| 84 int max_retries, | 88 int max_retries, |
| 85 const std::string& post_data_mime_type, | 89 const std::string& post_data_mime_type, |
| 86 const std::string& post_data); | 90 const std::string& post_data); |
| 87 | 91 |
| 88 // URLFetcher::Delegate implementation. | 92 // URLFetcher::Delegate implementation. |
| 89 virtual void OnURLFetchComplete(const URLFetcher* source, const GURL& url, | 93 virtual void OnURLFetchComplete(const URLFetcher* source, const GURL& url, |
| 90 const URLRequestStatus& status, | 94 const net::URLRequestStatus& status, |
| 91 int response_code, | 95 int response_code, |
| 92 const ResponseCookies& cookies, | 96 const ResponseCookies& cookies, |
| 93 const std::string& data); | 97 const std::string& data); |
| 94 protected: | 98 protected: |
| 95 friend class base::RefCountedThreadSafe<CloudPrintURLFetcher>; | 99 friend class base::RefCountedThreadSafe<CloudPrintURLFetcher>; |
| 96 virtual ~CloudPrintURLFetcher(); | 100 virtual ~CloudPrintURLFetcher(); |
| 97 | 101 |
| 98 // Virtual for testing. | 102 // Virtual for testing. |
| 99 virtual URLRequestContextGetter* GetRequestContextGetter(); | 103 virtual URLRequestContextGetter* GetRequestContextGetter(); |
| 100 | 104 |
| 101 private: | 105 private: |
| 102 void StartRequestHelper(const GURL& url, | 106 void StartRequestHelper(const GURL& url, |
| 103 URLFetcher::RequestType request_type, | 107 URLFetcher::RequestType request_type, |
| 104 Delegate* delegate, | 108 Delegate* delegate, |
| 105 const std::string& auth_token, | 109 const std::string& auth_token, |
| 106 int max_retries, | 110 int max_retries, |
| 107 const std::string& post_data_mime_type, | 111 const std::string& post_data_mime_type, |
| 108 const std::string& post_data); | 112 const std::string& post_data); |
| 109 | 113 |
| 110 scoped_ptr<URLFetcher> request_; | 114 scoped_ptr<URLFetcher> request_; |
| 111 Delegate* delegate_; | 115 Delegate* delegate_; |
| 112 int num_retries_; | 116 int num_retries_; |
| 113 }; | 117 }; |
| 114 | 118 |
| 115 typedef CloudPrintURLFetcher::Delegate CloudPrintURLFetcherDelegate; | 119 typedef CloudPrintURLFetcher::Delegate CloudPrintURLFetcherDelegate; |
| 116 | 120 |
| 117 #endif // CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_URL_FETCHER_H_ | 121 #endif // CHROME_SERVICE_CLOUD_PRINT_CLOUD_PRINT_URL_FETCHER_H_ |
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