Page Speed Optimization Libraries  1.7.30.2
net/instaweb/rewriter/public/fake_filter.h
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00001 /*
00002  * Copyright 2013 Google Inc.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *      http:///www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00018 
00019 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_FAKE_FILTER_H_
00020 #define NET_INSTAWEB_REWRITER_PUBLIC_FAKE_FILTER_H_
00021 
00022 #include "net/instaweb/http/public/semantic_type.h"
00023 #include "net/instaweb/rewriter/public/output_resource_kind.h"
00024 #include "net/instaweb/rewriter/public/resource.h"
00025 #include "net/instaweb/rewriter/public/resource_slot.h"
00026 #include "net/instaweb/rewriter/public/rewrite_filter.h"
00027 #include "net/instaweb/rewriter/public/server_context.h"
00028 #include "net/instaweb/rewriter/public/single_rewrite_context.h"
00029 #include "net/instaweb/util/public/string.h"
00030 
00031 namespace net_instaweb {
00032 
00033 class HtmlElement;
00034 class ResourceContext;
00035 class RewriteContext;
00036 class RewriteDriver;
00037 struct ContentType;
00038 
00043 class FakeFilter : public RewriteFilter {
00044  public:
00045   class Context : public SingleRewriteContext {
00046    public:
00047     Context(FakeFilter* filter, RewriteDriver* driver, RewriteContext* parent,
00048             ResourceContext* resource_context)
00049         : SingleRewriteContext(driver, parent, resource_context),
00050           filter_(filter) {}
00051     virtual ~Context();
00052 
00053     void RewriteSingle(const ResourcePtr& input,
00054                        const OutputResourcePtr& output);
00055 
00056     void DoRewriteSingle(const ResourcePtr input, OutputResourcePtr output);
00057     GoogleString UserAgentCacheKey(
00058         const ResourceContext* resource_context) const;
00059 
00060     virtual const char* id() const { return filter_->id(); }
00061     virtual OutputResourceKind kind() const { return filter_->kind(); }
00062 
00063    private:
00064     FakeFilter* filter_;
00065   };
00066 
00067   FakeFilter(const char* id, RewriteDriver* rewrite_driver,
00068              semantic_type::Category category)
00069       : RewriteFilter(rewrite_driver),
00070         id_(id),
00071         exceed_deadline_(false),
00072         enabled_(true),
00073         num_rewrites_(0),
00074         output_content_type_(NULL),
00075         num_calls_to_encode_user_agent_(0),
00076         category_(category) {}
00077 
00078   virtual ~FakeFilter();
00079 
00080   virtual void StartDocumentImpl() {}
00081   virtual void EndElementImpl(HtmlElement* element) {}
00082   virtual void StartElementImpl(HtmlElement* element);
00083   virtual RewriteContext* MakeRewriteContext() {
00084     return new FakeFilter::Context(this, driver_, NULL, NULL);
00085   }
00086   virtual RewriteContext* MakeNestedRewriteContext(RewriteContext* parent,
00087                                                    const ResourceSlotPtr& slot);
00088   int num_rewrites() const { return num_rewrites_; }
00089   int num_encode_user_agent() const { return num_calls_to_encode_user_agent_; }
00090   void ClearStats();
00091   void set_enabled(bool x) { enabled_ = x; }
00092   bool enabled() { return enabled_; }
00093   bool exceed_deadline() { return exceed_deadline_; }
00094   void set_exceed_deadline(bool x) { exceed_deadline_ = x; }
00095   void IncRewrites() { ++num_rewrites_; }
00096   void set_output_content_type(const ContentType* type) {
00097     output_content_type_ = type;
00098   }
00099   const ContentType* output_content_type() { return output_content_type_; }
00100   virtual void EncodeUserAgentIntoResourceContext(
00101       ResourceContext* context) const;
00102 
00103  protected:
00104   virtual const char* id() const { return id_; }
00105   virtual OutputResourceKind kind() const { return kRewrittenResource; }
00106   virtual const char* Name() const { return "MockFilter"; }
00107   virtual bool ComputeOnTheFly() const { return false; }
00108 
00109  private:
00110   const char* id_;
00111   bool exceed_deadline_;
00112   bool enabled_;
00113   int num_rewrites_;
00114   const ContentType* output_content_type_;
00115   mutable int num_calls_to_encode_user_agent_;
00116   semantic_type::Category category_;
00117 };
00118 
00119 }  
00120 
00121 #endif  ///< NET_INSTAWEB_REWRITER_PUBLIC_FAKE_FILTER_H_
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