| /** @file |
| |
| Statistics example plugin. |
| |
| This plugin demonstrates the statistics API and also serves as a |
| regression test for TS-4840. If traffic_server is restarted, a |
| plugin ought to be able to safely reattach to its statistics. |
| |
| This source is included as an example in the developers so if you |
| change it, you may have to update the line numbers on |
| doc/developer-guide/plugins/adding-statistics.en.rst |
| |
| @section license License |
| |
| Licensed to the Apache Software Foundation (ASF) under one |
| or more contributor license agreements. See the NOTICE file |
| distributed with this work for additional information |
| regarding copyright ownership. The ASF licenses this file |
| to you under the Apache License, Version 2.0 (the |
| "License"); you may not use this file except in compliance |
| with the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| #include <ts/ts.h> |
| #include <cinttypes> |
| #include <ctime> |
| |
| #define PLUGIN_NAME "statistics" |
| |
| void |
| TSPluginInit(int /* argc */, const char * /* argv */ []) |
| { |
| TSPluginRegistrationInfo info; |
| |
| info.plugin_name = PLUGIN_NAME; |
| info.vendor_name = "Apache Software Foundation"; |
| info.support_email = "dev@trafficserver.apache.org"; |
| |
| int id; |
| const char name[] = "plugin." PLUGIN_NAME ".now"; |
| |
| if (TSStatFindName(name, &id) == TS_ERROR) { |
| id = TSStatCreate(name, TS_RECORDDATATYPE_INT, TS_STAT_NON_PERSISTENT, TS_STAT_SYNC_SUM); |
| if (id == TS_ERROR) { |
| TSError("[%s] failed to register '%s'", PLUGIN_NAME, name); |
| return; |
| } |
| } |
| |
| TSError("[%s] %s registered with id %d", PLUGIN_NAME, name, id); |
| |
| #if DEBUG |
| TSReleaseAssert(id != TS_ERROR); |
| #endif |
| |
| // Set an initial value for our statistic. |
| TSStatIntSet(id, time(nullptr)); |
| |
| // Increment the statistic as time passes. |
| TSStatIntIncrement(id, 1); |
| |
| TSDebug(PLUGIN_NAME, "%s is set to %" PRId64, name, TSStatIntGet(id)); |
| TSReleaseAssert(TSPluginRegister(&info) == TS_SUCCESS); |
| } |