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logging.cc
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// Copyright 2016 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 "blimp/common/logging.h"
#include <iostream>
#include <string>
#include <utility>
#include <vector>
#include "base/format_macros.h"
#include "base/json/string_escape.h"
#include "base/lazy_instance.h"
#include "base/memory/ptr_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "blimp/common/create_blimp_message.h"
#include "blimp/common/proto/blimp_message.pb.h"
namespace blimp {
namespace {
using LogFields = std::vector<std::pair<std::string, std::string>>;
// The AddField() suite of functions are used to convert KV pairs with
// arbitrarily typed values into string/string KV pairs for logging.
// Specialization for string values, surrounding them with quotes and escaping
// characters as necessary.
void AddField(const std::string& key,
const std::string& value,
LogFields* output) {
std::string escaped_value;
base::EscapeJSONString(value, true, &escaped_value);
output->push_back(std::make_pair(key, escaped_value));
}
// Specialization for string literal values.
void AddField(const std::string& key, const char* value, LogFields* output) {
output->push_back(std::make_pair(key, std::string(value)));
}
// Specialization for boolean values (serialized as "true" or "false").
void AddField(const std::string& key, bool value, LogFields* output) {
output->push_back(std::make_pair(key, (value ? "true" : "false")));
}
// Specialization for SizeMessage values, serializing them as
// WIDTHxHEIGHT:RATIO. RATIO is rounded to two digits of precision
// (e.g. 2.123 => 2.12).
void AddField(const std::string& key,
const SizeMessage& value,
LogFields* output) {
output->push_back(std::make_pair(
key, base::StringPrintf("%" PRIu64 "x%" PRIu64 ":%.2lf", value.width(),
value.height(), value.device_pixel_ratio())));
}
// Conversion function for all other types.
// Uses std::to_string() to serialize |value|.
template <typename T>
void AddField(const std::string& key, const T& value, LogFields* output) {
output->push_back(std::make_pair(key, std::to_string(value)));
}
// The following LogExtractor subclasses contain logic for extracting loggable
// fields from BlimpMessages.
// Logs fields from COMPOSITOR messages.
void ExtractCompositorMessageFields(const BlimpMessage& message,
LogFields* output) {
AddField("render_widget_id", message.compositor().render_widget_id(), output);
}
// Logs fields from IME messages.
void ExtractImeMessageFields(const BlimpMessage& message, LogFields* output) {
AddField("render_widget_id", message.ime().render_widget_id(), output);
switch (message.ime().type()) {
case ImeMessage::SHOW_IME:
AddField("subtype", "SHOW_IME", output);
AddField("text_input_type", message.ime().text_input_type(), output);
break;
case ImeMessage::HIDE_IME:
AddField("subtype", "HIDE_IME", output);
break;
case ImeMessage::SET_TEXT:
AddField("subtype", "SET_TEXT", output);
AddField("ime_text(length)", message.ime().ime_text().size(), output);
break;
case ImeMessage::UNKNOWN:
AddField("subtype", "UNKNOWN", output);
break;
}
}
// Logs fields from INPUT messages.
void ExtractInputMessageFields(const BlimpMessage& message, LogFields* output) {
AddField("render_widget_id", message.input().render_widget_id(), output);
AddField("timestamp_seconds", message.input().timestamp_seconds(), output);
switch (message.input().type()) {
case InputMessage::Type_GestureScrollBegin:
AddField("subtype", "GestureScrollBegin", output);
break;
case InputMessage::Type_GestureScrollEnd:
AddField("subtype", "GestureScrollEnd", output);
break;
case InputMessage::Type_GestureScrollUpdate:
AddField("subtype", "GestureScrollUpdate", output);
break;
case InputMessage::Type_GestureFlingStart:
AddField("subtype", "GestureFlingStart", output);
break;
case InputMessage::Type_GestureFlingCancel:
AddField("subtype", "GestureFlingCancel", output);
AddField("prevent_boosting",
message.input().gesture_fling_cancel().prevent_boosting(),
output);
break;
case InputMessage::Type_GestureTap:
AddField("subtype", "GestureTap", output);
break;
case InputMessage::Type_GesturePinchBegin:
AddField("subtype", "GesturePinchBegin", output);
break;
case InputMessage::Type_GesturePinchEnd:
AddField("subtype", "GesturePinchEnd", output);
break;
case InputMessage::Type_GesturePinchUpdate:
AddField("subtype", "GesturePinchUpdate", output);
break;
case InputMessage::Type_GestureTapDown:
AddField("subtype", "GestureTapDown", output);
break;
case InputMessage::Type_GestureTapCancel:
AddField("subtype", "GestureTapCancel", output);
break;
case InputMessage::Type_GestureTapUnconfirmed:
AddField("subtype", "GestureTapUnconfirmed", output);
break;
case InputMessage::Type_GestureShowPress:
AddField("subtype", "GestureShowPress", output);
break;
case InputMessage::UNKNOWN:
break;
}
}
// Logs fields from NAVIGATION messages.
void ExtractNavigationMessageFields(const BlimpMessage& message,
LogFields* output) {
switch (message.navigation().type()) {
case NavigationMessage::NAVIGATION_STATE_CHANGED:
AddField("subtype", "NAVIGATION_STATE_CHANGED", output);
if (message.navigation().navigation_state_changed().has_url()) {
AddField("url", message.navigation().navigation_state_changed().url(),
output);
}
if (message.navigation().navigation_state_changed().has_favicon()) {
AddField(
"favicon_size",
message.navigation().navigation_state_changed().favicon().size(),
output);
}
if (message.navigation().navigation_state_changed().has_title()) {
AddField("title",
message.navigation().navigation_state_changed().title(),
output);
}
if (message.navigation().navigation_state_changed().has_loading()) {
AddField("loading",
message.navigation().navigation_state_changed().loading(),
output);
}
break;
case NavigationMessage::LOAD_URL:
AddField("subtype", "LOAD_URL", output);
AddField("url", message.navigation().load_url().url(), output);
break;
case NavigationMessage::GO_BACK:
AddField("subtype", "GO_BACK", output);
break;
case NavigationMessage::GO_FORWARD:
AddField("subtype", "GO_FORWARD", output);
break;
case NavigationMessage::RELOAD:
AddField("subtype", "RELOAD", output);
break;
case NavigationMessage::UNKNOWN:
break;
}
}
// Logs fields from PROTOCOL_CONTROL messages.
void ExtractProtocolControlMessageFields(const BlimpMessage& message,
LogFields* output) {
switch (message.protocol_control().connection_message_case()) {
case ProtocolControlMessage::kStartConnection:
AddField("subtype", "START_CONNECTION", output);
AddField("client_token",
message.protocol_control().start_connection().client_token(),
output);
AddField("protocol_version",
message.protocol_control().start_connection().protocol_version(),
output);
break;
case ProtocolControlMessage::kCheckpointAck:
AddField("subtype", "CHECKPOINT_ACK", output);
AddField("checkpoint_id",
message.protocol_control().checkpoint_ack().checkpoint_id(),
output);
break;
case ProtocolControlMessage::kEndConnection:
AddField("subtype", "END_CONNECTION", output);
switch (message.protocol_control().end_connection().reason()) {
case EndConnectionMessage::AUTHENTICATION_FAILED:
AddField("reason", "AUTHENTICATION_FAILED", output);
break;
case EndConnectionMessage::PROTOCOL_MISMATCH:
AddField("reason", "PROTOCOL_MISMATCH", output);
break;
case EndConnectionMessage::UNKNOWN:
break;
}
break;
case ProtocolControlMessage::CONNECTION_MESSAGE_NOT_SET:
break;
}
}
// Logs fields from RENDER_WIDGET messages.
void ExtractRenderWidgetMessageFields(const BlimpMessage& message,
LogFields* output) {
switch (message.render_widget().type()) {
case RenderWidgetMessage::INITIALIZE:
AddField("subtype", "INITIALIZE", output);
break;
case RenderWidgetMessage::CREATED:
AddField("subtype", "CREATED", output);
break;
case RenderWidgetMessage::DELETED:
AddField("subtype", "DELETED", output);
break;
case RenderWidgetMessage::UNKNOWN:
break;
}
AddField("render_widget_id", message.render_widget().render_widget_id(),
output);
}
// Logs fields from SETTINGS messages.
void ExtractSettingsMessageFields(const BlimpMessage& message,
LogFields* output) {
if (message.settings().has_engine_settings()) {
const EngineSettingsMessage& engine_settings =
message.settings().engine_settings();
AddField("subtype", "ENGINE_SETTINGS", output);
AddField("record_whole_document", engine_settings.record_whole_document(),
output);
AddField("client_os_info", engine_settings.client_os_info(), output);
}
}
// Logs fields from TAB_CONTROL messages.
void ExtractTabControlMessageFields(const BlimpMessage& message,
LogFields* output) {
switch (message.tab_control().tab_control_case()) {
case TabControlMessage::kCreateTab:
AddField("subtype", "CREATE_TAB", output);
break;
case TabControlMessage::kCloseTab:
AddField("subtype", "CLOSE_TAB", output);
break;
case TabControlMessage::kSize:
AddField("subtype", "SIZE", output);
AddField("size", message.tab_control().size(), output);
break;
case TabControlMessage::TAB_CONTROL_NOT_SET:
break;
}
}
// Logs fields from BLOB_CHANNEL messages.
void ExtractBlobChannelMessageFields(const BlimpMessage& message,
LogFields* output) {
switch (message.blob_channel().type_case()) {
case BlobChannelMessage::TypeCase::kTransferBlob:
AddField("subtype", "TRANSFER_BLOB", output);
AddField("id",
base::HexEncode(
message.blob_channel().transfer_blob().blob_id().data(),
message.blob_channel().transfer_blob().blob_id().size()),
output);
AddField("payload_size",
message.blob_channel().transfer_blob().payload().size(), output);
break;
case BlobChannelMessage::TypeCase::TYPE_NOT_SET: // unknown
break;
}
}
} // namespace
std::ostream& operator<<(std::ostream& out, const BlimpMessage& message) {
LogFields fields;
switch (message.feature_case()) {
case BlimpMessage::kCompositor:
AddField("type", "COMPOSITOR", &fields);
ExtractCompositorMessageFields(message, &fields);
break;
case BlimpMessage::kInput:
AddField("type", "INPUT", &fields);
ExtractInputMessageFields(message, &fields);
break;
case BlimpMessage::kNavigation:
AddField("type", "NAVIGATION", &fields);
ExtractNavigationMessageFields(message, &fields);
break;
case BlimpMessage::kProtocolControl:
AddField("type", "PROTOCOL_CONTROL", &fields);
ExtractProtocolControlMessageFields(message, &fields);
break;
case BlimpMessage::kRenderWidget:
AddField("type", "RENDER_WIDGET", &fields);
ExtractRenderWidgetMessageFields(message, &fields);
break;
case BlimpMessage::kSettings:
AddField("type", "SETTINGS", &fields);
ExtractSettingsMessageFields(message, &fields);
break;
case BlimpMessage::kTabControl:
AddField("type", "TAB_CONTROL", &fields);
ExtractTabControlMessageFields(message, &fields);
break;
case BlimpMessage::kBlobChannel:
AddField("type", "BLOB_CHANNEL", &fields);
ExtractBlobChannelMessageFields(message, &fields);
break;
case BlimpMessage::kIme:
AddField("type", "IME", &fields);
ExtractImeMessageFields(message, &fields);
break;
case BlimpMessage::FEATURE_NOT_SET:
AddField("type", "<UNKNOWN>", &fields);
break;
}
// Append "target_tab_id" (if present) and "byte_size" to the field set.
if (message.has_target_tab_id()) {
AddField("target_tab_id", message.target_tab_id(), &fields);
}
AddField("byte_size", message.ByteSize(), &fields);
// Format message using the syntax:
// <BlimpMessage field1=value1 field2="value 2">
out << "<BlimpMessage ";
for (size_t i = 0; i < fields.size(); ++i) {
out << fields[i].first << "=" << fields[i].second
<< (i != fields.size() - 1 ? " " : "");
}
out << ">";
return out;
}
} // namespace blimp