Jeff Kaufman
35dd83397e
We want people to be able to install ngx_pagespeed like any other nginx module. If PSOL were a full-fledged library with a stable interface we could simply say "install PSOL" which might be as easy as `apt-get install psol-dev`, but it's not. Instead we directly include a precompiled binary library along with its headers. By building the binaries on something sufficiently old (Centos 5.4) they should work pretty much everywhere someone might think to run ngx_pagespeed, but building from source is still a documented option if they don't. Headers and binaries are from trunk of r2338, as documented in the READMEs.
92 lines
3.2 KiB
C++
92 lines
3.2 KiB
C++
// Copyright 2010 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Author: sligocki@google.com (Shawn Ligocki)
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#ifndef NET_INSTAWEB_APACHE_APACHE_MESSAGE_HANDLER_H_
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#define NET_INSTAWEB_APACHE_APACHE_MESSAGE_HANDLER_H_
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#include <cstdarg>
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#include "net/instaweb/util/public/basictypes.h"
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#include "net/instaweb/util/public/google_message_handler.h"
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#include "net/instaweb/util/public/message_handler.h"
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#include "net/instaweb/util/public/scoped_ptr.h"
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#include "net/instaweb/util/public/string.h"
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#include "net/instaweb/util/public/string_util.h"
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struct server_rec;
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namespace net_instaweb {
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class AbstractMutex;
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class SharedCircularBuffer;
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class Timer;
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class Writer;
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// Implementation of an HTML parser message handler that uses Apache
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// logging to emit messsages.
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class ApacheMessageHandler : public MessageHandler {
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public:
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// version is a string added to each message.
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// Timer is used to generate timestamp for messages in shared memory.
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ApacheMessageHandler(const server_rec* server, const StringPiece& version,
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Timer* timer, AbstractMutex* mutex);
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// Installs a signal handler for common crash signals that tries to print
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// out a backtrace.
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static void InstallCrashHandler(server_rec* global_server);
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// When we initialize ApacheMessageHandler in ApacheRewriteDriverFactory,
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// SharedCircularBuffer of ApacheRewriteDriverFactory is not initialized yet.
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// We need to set buffer_ later in RootInit() or ChildInit().
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void set_buffer(SharedCircularBuffer* buff);
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void SetPidString(const int64 pid) {
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pid_string_ = StrCat("[", Integer64ToString(pid), "]");
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}
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// Dump contents of SharedCircularBuffer.
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bool Dump(Writer* writer);
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protected:
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virtual void MessageVImpl(MessageType type, const char* msg, va_list args);
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virtual void FileMessageVImpl(MessageType type, const char* filename,
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int line, const char* msg, va_list args);
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private:
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int GetApacheLogLevel(MessageType type);
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GoogleString Format(const char* msg, va_list args);
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const server_rec* server_rec_;
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const GoogleString version_;
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// This timer is used to prepend time when writing a message
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// to SharedCircularBuffer.
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Timer* timer_;
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scoped_ptr<AbstractMutex> mutex_;
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// String "[pid]".
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GoogleString pid_string_;
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// This handler is for internal use.
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// Some functions of SharedCircularBuffer need MessageHandler as argument,
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// We do not want to pass in another ApacheMessageHandler to cause infinite
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// loop.
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GoogleMessageHandler handler_;
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SharedCircularBuffer* buffer_;
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DISALLOW_COPY_AND_ASSIGN(ApacheMessageHandler);
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};
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} // namespace net_instaweb
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#endif // NET_INSTAWEB_APACHE_APACHE_MESSAGE_HANDLER_H_
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