#include <string>
#include "base/callback_forward.h"
+#include "base/location.h"
+#include "base/sequenced_task_runner.h"
+#include "base/task_runner_util.h"
#include "base/time/time.h"
+#include "base/values.h"
#include "google_apis/drive/base_requests.h"
+#include "google_apis/drive/drive_api_parser.h"
#include "google_apis/drive/drive_api_url_generator.h"
#include "google_apis/drive/drive_common_callbacks.h"
namespace google_apis {
-class ChangeList;
-class FileResource;
-class FileList;
-
// Callback used for requests that the server returns FileResource data
// formatted into JSON value.
typedef base::Callback<void(GDataErrorCode error,
namespace drive {
-//============================ DriveApiDataRequest ===========================
+//============================ DriveApiPartialFieldRequest ====================
// This is base class of the Drive API related requests. All Drive API requests
// support partial request (to improve the performance). The function can be
// shared among the Drive API requests.
// See also https://developers.google.com/drive/performance
-class DriveApiDataRequest : public GetDataRequest {
+class DriveApiPartialFieldRequest : public UrlFetchRequestBase {
public:
- DriveApiDataRequest(RequestSender* sender, const GetDataCallback& callback);
- virtual ~DriveApiDataRequest();
+ explicit DriveApiPartialFieldRequest(RequestSender* sender);
+ virtual ~DriveApiPartialFieldRequest();
// Optional parameter.
const std::string& fields() const { return fields_; }
void set_fields(const std::string& fields) { fields_ = fields; }
protected:
- // Overridden from GetDataRequest.
+ // UrlFetchRequestBase overrides.
virtual GURL GetURL() const OVERRIDE;
// Derived classes should override GetURLInternal instead of GetURL()
private:
std::string fields_;
+ DISALLOW_COPY_AND_ASSIGN(DriveApiPartialFieldRequest);
+};
+
+//============================ DriveApiDataRequest ===========================
+
+// The base class of Drive API related requests that receive a JSON response
+// representing |DataType|.
+template<class DataType>
+class DriveApiDataRequest : public DriveApiPartialFieldRequest {
+ public:
+ typedef base::Callback<void(GDataErrorCode error,
+ scoped_ptr<DataType> data)> Callback;
+
+ // |callback| is called when the request finishes either by success or by
+ // failure. On success, a JSON Value object is passed. It must not be null.
+ DriveApiDataRequest(RequestSender* sender, const Callback& callback)
+ : DriveApiPartialFieldRequest(sender),
+ callback_(callback),
+ weak_ptr_factory_(this) {
+ DCHECK(!callback_.is_null());
+ }
+ virtual ~DriveApiDataRequest() {}
+
+ protected:
+ // UrlFetchRequestBase overrides.
+ virtual void ProcessURLFetchResults(const net::URLFetcher* source) OVERRIDE {
+ GDataErrorCode error = GetErrorCode();
+ switch (error) {
+ case HTTP_SUCCESS:
+ case HTTP_CREATED:
+ base::PostTaskAndReplyWithResult(
+ blocking_task_runner(),
+ FROM_HERE,
+ base::Bind(&DriveApiDataRequest::Parse, response_writer()->data()),
+ base::Bind(&DriveApiDataRequest::OnDataParsed,
+ weak_ptr_factory_.GetWeakPtr(), error));
+ break;
+ default:
+ RunCallbackOnPrematureFailure(error);
+ OnProcessURLFetchResultsComplete();
+ break;
+ }
+ }
+
+ virtual void RunCallbackOnPrematureFailure(GDataErrorCode error) OVERRIDE {
+ callback_.Run(error, scoped_ptr<DataType>());
+ }
+
+ private:
+ // Parses the |json| string by using DataType::CreateFrom.
+ static scoped_ptr<DataType> Parse(const std::string& json) {
+ scoped_ptr<base::Value> value = ParseJson(json);
+ return value ? DataType::CreateFrom(*value) : scoped_ptr<DataType>();
+ }
+
+ // Receives the parsed result and invokes the callback.
+ void OnDataParsed(GDataErrorCode error, scoped_ptr<DataType> value) {
+ if (!value)
+ error = GDATA_PARSE_ERROR;
+ callback_.Run(error, value.Pass());
+ OnProcessURLFetchResultsComplete();
+ }
+
+ const Callback callback_;
+
+ // Note: This should remain the last member so it'll be destroyed and
+ // invalidate its weak pointers before any other members are destroyed.
+ base::WeakPtrFactory<DriveApiDataRequest> weak_ptr_factory_;
+
DISALLOW_COPY_AND_ASSIGN(DriveApiDataRequest);
};
// This class performs the request for fetching a file.
// This request is mapped to
// https://developers.google.com/drive/v2/reference/files/get
-class FilesGetRequest : public DriveApiDataRequest {
+class FilesGetRequest : public DriveApiDataRequest<FileResource> {
public:
FilesGetRequest(RequestSender* sender,
const DriveApiUrlGenerator& url_generator,
// This class performs request for authorizing an app to access a file.
// This request is mapped to /drive/v2internal/file/authorize internal endpoint.
-class FilesAuthorizeRequest : public DriveApiDataRequest {
+class FilesAuthorizeRequest : public DriveApiDataRequest<FileResource> {
public:
FilesAuthorizeRequest(RequestSender* sender,
const DriveApiUrlGenerator& url_generator,
// https://developers.google.com/drive/v2/reference/files/insert
// See also https://developers.google.com/drive/manage-uploads and
// https://developers.google.com/drive/folder
-class FilesInsertRequest : public DriveApiDataRequest {
+class FilesInsertRequest : public DriveApiDataRequest<FileResource> {
public:
FilesInsertRequest(RequestSender* sender,
const DriveApiUrlGenerator& url_generator,
// This class performs the request for patching file metadata.
// This request is mapped to
// https://developers.google.com/drive/v2/reference/files/patch
-class FilesPatchRequest : public DriveApiDataRequest {
+class FilesPatchRequest : public DriveApiDataRequest<FileResource> {
public:
FilesPatchRequest(RequestSender* sender,
const DriveApiUrlGenerator& url_generator,
// This class performs the request for copying a resource.
// This request is mapped to
// https://developers.google.com/drive/v2/reference/files/copy
-class FilesCopyRequest : public DriveApiDataRequest {
+class FilesCopyRequest : public DriveApiDataRequest<FileResource> {
public:
// Upon completion, |callback| will be called. |callback| must not be null.
FilesCopyRequest(RequestSender* sender,
// or by FilesListRequest with setting page token.
// This request is mapped to
// https://developers.google.com/drive/v2/reference/files/list
-class FilesListRequest : public DriveApiDataRequest {
+class FilesListRequest : public DriveApiDataRequest<FileList> {
public:
FilesListRequest(RequestSender* sender,
const DriveApiUrlGenerator& url_generator,
// 1) Set pageToken and all params used for the initial request.
// 2) Use URL in the nextLink field in the previous response.
// This class implements 2)'s request.
-class FilesListNextPageRequest : public DriveApiDataRequest {
+class FilesListNextPageRequest : public DriveApiDataRequest<FileList> {
public:
FilesListNextPageRequest(RequestSender* sender,
const FileListCallback& callback);
// This class performs the request for trashing a resource.
// This request is mapped to
// https://developers.google.com/drive/v2/reference/files/trash
-class FilesTrashRequest : public DriveApiDataRequest {
+class FilesTrashRequest : public DriveApiDataRequest<FileResource> {
public:
FilesTrashRequest(RequestSender* sender,
const DriveApiUrlGenerator& url_generator,
// This class performs the request for fetching About data.
// This request is mapped to
// https://developers.google.com/drive/v2/reference/about/get
-class AboutGetRequest : public DriveApiDataRequest {
+class AboutGetRequest : public DriveApiDataRequest<AboutResource> {
public:
AboutGetRequest(RequestSender* sender,
const DriveApiUrlGenerator& url_generator,
// or by ChangesListRequest with setting page token.
// This request is mapped to
// https://developers.google.com/drive/v2/reference/changes/list
-class ChangesListRequest : public DriveApiDataRequest {
+class ChangesListRequest : public DriveApiDataRequest<ChangeList> {
public:
ChangesListRequest(RequestSender* sender,
const DriveApiUrlGenerator& url_generator,
// 1) Set pageToken and all params used for the initial request.
// 2) Use URL in the nextLink field in the previous response.
// This class implements 2)'s request.
-class ChangesListNextPageRequest : public DriveApiDataRequest {
+class ChangesListNextPageRequest : public DriveApiDataRequest<ChangeList> {
public:
ChangesListNextPageRequest(RequestSender* sender,
const ChangeListCallback& callback);
// This class performs the request for fetching AppList.
// This request is mapped to
// https://developers.google.com/drive/v2/reference/apps/list
-class AppsListRequest : public DriveApiDataRequest {
+class AppsListRequest : public DriveApiDataRequest<AppList> {
public:
AppsListRequest(RequestSender* sender,
const DriveApiUrlGenerator& url_generator,
projects / platform / framework / web / crosswalk.git / blobdiff