mirror of
https://github.com/sogou/workflow.git
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114 lines
3.1 KiB
C++
114 lines
3.1 KiB
C++
/*
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Copyright (c) 2020 Sogou, Inc.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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: Xie Han (xiehan@sogou-inc.com;63350856@qq.com)
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*/
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#include <string.h>
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#include <stdio.h>
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#include "workflow/Workflow.h"
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#include "workflow/WFTaskFactory.h"
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#include "workflow/WFFacilities.h"
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#include "message.h"
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using WFTutorialTask = WFNetworkTask<protocol::TutorialRequest,
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protocol::TutorialResponse>;
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using tutorial_callback_t = std::function<void (WFTutorialTask *)>;
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using namespace protocol;
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class MyFactory : public WFTaskFactory
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{
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public:
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static WFTutorialTask *create_tutorial_task(const std::string& host,
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unsigned short port,
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int retry_max,
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tutorial_callback_t callback)
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{
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using NTF = WFNetworkTaskFactory<TutorialRequest, TutorialResponse>;
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WFTutorialTask *task = NTF::create_client_task(TT_TCP, host, port,
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retry_max,
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std::move(callback));
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task->set_keep_alive(30 * 1000);
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return task;
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}
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};
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int main(int argc, char *argv[])
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{
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unsigned short port;
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std::string host;
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if (argc != 3)
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{
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fprintf(stderr, "USAGE: %s <host> <port>\n", argv[0]);
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exit(1);
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}
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host = argv[1];
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port = atoi(argv[2]);
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std::function<void (WFTutorialTask *task)> callback =
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[&host, port, &callback](WFTutorialTask *task) {
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int state = task->get_state();
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int error = task->get_error();
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TutorialResponse *resp = task->get_resp();
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char buf[1024];
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void *body;
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size_t body_size;
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if (state != WFT_STATE_SUCCESS)
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{
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if (state == WFT_STATE_SYS_ERROR)
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fprintf(stderr, "SYS error: %s\n", strerror(error));
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else if (state == WFT_STATE_DNS_ERROR)
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fprintf(stderr, "DNS error: %s\n", gai_strerror(error));
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else
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fprintf(stderr, "other error.\n");
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return;
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}
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resp->get_message_body_nocopy(&body, &body_size);
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if (body_size != 0)
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printf("Server Response: %.*s\n", (int)body_size, (char *)body);
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printf("Input next request string (Ctrl-D to exit): ");
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*buf = '\0';
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scanf("%1024s", buf);
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body_size = strlen(buf);
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if (body_size > 0)
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{
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WFTutorialTask *next;
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next = MyFactory::create_tutorial_task(host, port, 0, callback);
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next->get_req()->set_message_body(buf, body_size);
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next->get_resp()->set_size_limit(4 * 1024);
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**task << next; /* equal to: series_of(task)->push_back(next) */
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}
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else
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printf("\n");
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};
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/* First request is emtpy. We will ignore the server response. */
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WFFacilities::WaitGroup wait_group(1);
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WFTutorialTask *task = MyFactory::create_tutorial_task(host, port, 0, callback);
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task->get_resp()->set_size_limit(4 * 1024);
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Workflow::start_series_work(task, [&wait_group](const SeriesWork *) {
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wait_group.done();
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});
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wait_group.wait();
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return 0;
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}
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