d5b3838dbc
We may use different implementations of LogBuffer in the future, so we make it interface and create a concrete ChattyLogBuffer class that implements it. Test: logging unit tests Change-Id: I5731d6404640664c9acc26b7c677dff3110c6a11
54 lines
No EOL
1.7 KiB
C++
54 lines
No EOL
1.7 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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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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*/
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#pragma once
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#include <sys/types.h>
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#include <functional>
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#include <log/log.h>
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#include <sysutils/SocketClient.h>
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#include "LogBufferElement.h"
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enum class FlushToResult {
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kSkip,
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kStop,
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kWrite,
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};
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class LogBuffer {
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public:
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virtual ~LogBuffer() {}
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virtual void Init() = 0;
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virtual int Log(log_id_t log_id, log_time realtime, uid_t uid, pid_t pid, pid_t tid,
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const char* msg, uint16_t len) = 0;
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// lastTid is an optional context to help detect if the last previous
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// valid message was from the same source so we can differentiate chatty
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// filter types (identical or expired)
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virtual uint64_t FlushTo(
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SocketClient* writer, uint64_t start,
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pid_t* last_tid, // nullable
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bool privileged, bool security,
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const std::function<FlushToResult(const LogBufferElement* element)>& filter) = 0;
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virtual bool Clear(log_id_t id, uid_t uid) = 0;
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virtual unsigned long GetSize(log_id_t id) = 0;
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virtual int SetSize(log_id_t id, unsigned long size) = 0;
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}; |