Mark Salyzyn | 12bac90 | 2014-02-26 09:50:16 -0800 | [diff] [blame] | 1 | /* |
Tom Cherry | 0281b20 | 2020-05-12 13:16:41 -0700 | [diff] [blame] | 2 | * Copyright (C) 2020 The Android Open Source Project |
Mark Salyzyn | 12bac90 | 2014-02-26 09:50:16 -0800 | [diff] [blame] | 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Tom Cherry | 04ad458 | 2020-05-01 16:13:18 -0700 | [diff] [blame] | 17 | #pragma once |
Mark Salyzyn | 12bac90 | 2014-02-26 09:50:16 -0800 | [diff] [blame] | 18 | |
| 19 | #include <sys/types.h> |
| 20 | |
Tom Cherry | 0281b20 | 2020-05-12 13:16:41 -0700 | [diff] [blame] | 21 | #include <functional> |
Mark Salyzyn | 9a400aa | 2015-08-19 13:41:51 -0700 | [diff] [blame] | 22 | |
Tom Cherry | 0281b20 | 2020-05-12 13:16:41 -0700 | [diff] [blame] | 23 | #include <log/log.h> |
Mark Salyzyn | 224b86f | 2016-09-28 15:54:45 -0700 | [diff] [blame] | 24 | #include <sysutils/SocketClient.h> |
Mark Salyzyn | 276d535 | 2014-06-12 11:16:16 -0700 | [diff] [blame] | 25 | |
Mark Salyzyn | 12bac90 | 2014-02-26 09:50:16 -0800 | [diff] [blame] | 26 | #include "LogBufferElement.h" |
Tom Cherry | 5ecfbf0 | 2020-05-11 16:29:29 -0700 | [diff] [blame] | 27 | |
Tom Cherry | adf2e44 | 2020-05-14 19:25:05 -0700 | [diff] [blame] | 28 | class LogWriter; |
| 29 | |
Tom Cherry | 5ecfbf0 | 2020-05-11 16:29:29 -0700 | [diff] [blame] | 30 | enum class FlushToResult { |
| 31 | kSkip, |
| 32 | kStop, |
| 33 | kWrite, |
| 34 | }; |
| 35 | |
Tom Cherry | c49573f | 2019-06-28 13:37:10 -0700 | [diff] [blame] | 36 | class LogBuffer { |
Tom Cherry | 5ecfbf0 | 2020-05-11 16:29:29 -0700 | [diff] [blame] | 37 | public: |
Tom Cherry | 0281b20 | 2020-05-12 13:16:41 -0700 | [diff] [blame] | 38 | virtual ~LogBuffer() {} |
Mark Salyzyn | 12bac90 | 2014-02-26 09:50:16 -0800 | [diff] [blame] | 39 | |
Tom Cherry | 0281b20 | 2020-05-12 13:16:41 -0700 | [diff] [blame] | 40 | virtual void Init() = 0; |
| 41 | |
| 42 | virtual int Log(log_id_t log_id, log_time realtime, uid_t uid, pid_t pid, pid_t tid, |
| 43 | const char* msg, uint16_t len) = 0; |
Mark Salyzyn | bec7b2d | 2017-03-31 10:48:39 -0700 | [diff] [blame] | 44 | // lastTid is an optional context to help detect if the last previous |
| 45 | // valid message was from the same source so we can differentiate chatty |
| 46 | // filter types (identical or expired) |
Tom Cherry | adf2e44 | 2020-05-14 19:25:05 -0700 | [diff] [blame] | 47 | static const uint64_t FLUSH_ERROR = 0; |
Tom Cherry | 0281b20 | 2020-05-12 13:16:41 -0700 | [diff] [blame] | 48 | virtual uint64_t FlushTo( |
Tom Cherry | adf2e44 | 2020-05-14 19:25:05 -0700 | [diff] [blame] | 49 | LogWriter* writer, uint64_t start, |
Tom Cherry | 0281b20 | 2020-05-12 13:16:41 -0700 | [diff] [blame] | 50 | pid_t* last_tid, // nullable |
Tom Cherry | 0281b20 | 2020-05-12 13:16:41 -0700 | [diff] [blame] | 51 | const std::function<FlushToResult(const LogBufferElement* element)>& filter) = 0; |
Mark Salyzyn | 12bac90 | 2014-02-26 09:50:16 -0800 | [diff] [blame] | 52 | |
Tom Cherry | 0281b20 | 2020-05-12 13:16:41 -0700 | [diff] [blame] | 53 | virtual bool Clear(log_id_t id, uid_t uid) = 0; |
| 54 | virtual unsigned long GetSize(log_id_t id) = 0; |
| 55 | virtual int SetSize(log_id_t id, unsigned long size) = 0; |
Tom Cherry | 0bf66db | 2020-05-21 13:56:33 -0700 | [diff] [blame^] | 56 | |
| 57 | virtual uint64_t sequence() const = 0; |
Tom Cherry | 0281b20 | 2020-05-12 13:16:41 -0700 | [diff] [blame] | 58 | }; |