| /** @file |
| |
| An example plugin that creates a thread. |
| |
| The thread is created on the DNS lookup hook and simply re-enables the transaction from the thread. |
| |
| @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 <stdio.h> |
| #include <string.h> |
| |
| #include "ts/ts.h" |
| #include "tscore/ink_defs.h" |
| |
| #define PLUGIN_NAME "thread_1" |
| |
| static void * |
| reenable_txn(void *data) |
| { |
| TSHttpTxn txnp = (TSHttpTxn)data; |
| TSHttpTxnReenable(txnp, TS_EVENT_HTTP_CONTINUE); |
| return NULL; |
| } |
| |
| static int |
| thread_plugin(TSCont contp ATS_UNUSED, TSEvent event, void *edata) |
| { |
| switch (event) { |
| case TS_EVENT_HTTP_OS_DNS: |
| /** |
| * Check if the thread has been created successfully or not. |
| * If the thread has not been created successfully, assert. |
| */ |
| if (!TSThreadCreate(reenable_txn, edata)) { |
| TSReleaseAssert(!PLUGIN_NAME " - Failure in thread creation"); |
| } |
| return 0; |
| default: |
| break; |
| } |
| return 0; |
| } |
| |
| void |
| TSPluginInit(int argc ATS_UNUSED, const char *argv[] ATS_UNUSED) |
| { |
| TSPluginRegistrationInfo info; |
| |
| info.plugin_name = PLUGIN_NAME; |
| info.vendor_name = "Apache Software Foundation"; |
| info.support_email = "dev@trafficserver.apache.org"; |
| |
| if (TSPluginRegister(&info) != TS_SUCCESS) { |
| TSError("[%s] Plugin registration failed", PLUGIN_NAME); |
| } |
| |
| TSHttpHookAdd(TS_HTTP_OS_DNS_HOOK, TSContCreate(thread_plugin, NULL)); |
| } |