Bypassed Bytes UMAs

components/data_reduction_proxy/browser/data_reduction_proxy_params.cc

 // Copyright 2014 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 "components/data_reduction_proxy/browser/data_reduction_proxy_params.h"
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "components/data_reduction_proxy/common/data_reduction_proxy_switches.h"
 #include "net/proxy/proxy_info.h"
 #include "net/proxy/proxy_service.h"
 #include "net/url_request/url_request.h"
 #include "net/url_request/url_request_context.h"
 
 using base::FieldTrialList;
 
 namespace {
 const char kEnabled[] = "Enabled";
 }
 
+using namespace net;
+
 namespace data_reduction_proxy {
 
 // static
 bool DataReductionProxyParams::IsIncludedInFieldTrial() {
   return base::FieldTrialList::FindFullName(
       "DataCompressionProxyRollout") == kEnabled;
 }
 
 // static
 bool DataReductionProxyParams::IsIncludedInAlternativeFieldTrial() {
@@ skipping 291 matching lines @@
     return std::string();
   if (command_line.HasSwitch(switches::kEnableDataReductionProxyDev) ||
       (FieldTrialList::FindFullName("DataCompressionProxyDevRollout") ==
          kEnabled)) {
     return DATA_REDUCTION_DEV_HOST;
   }
 #endif
   return std::string();
 }
 
+bool WerePrimaryAndFallbackBypassed(
+    const net::ProxyRetryInfoMap& retry_map,
+    GURL primary,
+    GURL fallback,
+    bool fallback_allowed,
+    int64* delay_seconds) {
+  int64 shortest_delay = 0;
+  net::ProxyRetryInfoMap::const_iterator found;
+
+  std::string proxy = net::HostPortPair::FromURL(primary).ToString();
+  // The retry list has the scheme prefix for https but not for http.
+  if (primary.SchemeIs(url::kHttpsScheme))
+    proxy = std::string("https://") + proxy;
+
+  found = retry_map.find(proxy);
+  if (!(found == retry_map.end())) {
+    shortest_delay = found->second.current_delay.InSeconds();
+    if (fallback_allowed) {
+      proxy = net::HostPortPair::FromURL(fallback).ToString();
+      found = retry_map.find(proxy);
+      if (!(found == retry_map.end())) {
+        if(shortest_delay > found->second.current_delay.InSeconds())
+          shortest_delay = found->second.current_delay.InSeconds();
+        if (delay_seconds != NULL)
+          *delay_seconds = shortest_delay;
+        return true;
+      }
+    } else {
+      if (delay_seconds != NULL)
+        *delay_seconds = shortest_delay;
+      return true;
+    }
+  }
+
+  return false;
+}
+
+bool DataReductionProxyParams::WereDataReductionProxiesBypassed(
+    const net::URLRequest* request, int64* delay_seconds) const {
+  DCHECK(request);
+  DCHECK(request->context());
+  DCHECK(request->context()->proxy_service());
+
+  const net::ProxyRetryInfoMap& retry_map =
+      request->context()->proxy_service()->proxy_retry_info();
+  if (retry_map.size() == 0)
+    return false;
+
+  if(allowed_) {
+    if (WerePrimaryAndFallbackBypassed(retry_map,
+                                       origin_,
+                                       fallback_origin_,
+                                       fallback_allowed_,
+                                       delay_seconds)) {
+      return true;
+    }
+  }
+
+  if (alt_allowed_) {
+    if (WerePrimaryAndFallbackBypassed(retry_map,
+                                       alt_origin_,
+                                       alt_fallback_origin_,
+                                       fallback_allowed_,
+                                       delay_seconds)) {
+      return true;
+    }
+
+    if (WerePrimaryAndFallbackBypassed(
+        retry_map, ssl_origin_, GURL(), false, delay_seconds)) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
 std::string DataReductionProxyParams::GetDefaultOrigin() const {
 #if defined(SPDY_PROXY_AUTH_ORIGIN)
   return SPDY_PROXY_AUTH_ORIGIN;
 #endif
   return std::string();
 }
 
 std::string DataReductionProxyParams::GetDefaultFallbackOrigin() const {
 #if defined(DATA_REDUCTION_FALLBACK_HOST)
   return DATA_REDUCTION_FALLBACK_HOST;
@@ skipping 30 matching lines @@
 }
 
 std::string DataReductionProxyParams::GetDefaultWarmupURL() const {
 #if defined(DATA_REDUCTION_PROXY_WARMUP_URL)
   return DATA_REDUCTION_PROXY_WARMUP_URL;
 #endif
   return std::string();
 }
 
 }  // namespace data_reduction_proxy