mirror of
https://github.com/slsdetectorgroup/slsDetectorPackage.git
synced 2025-04-28 01:00:02 +02:00
7dccc4fc1a
code cleaned added exceptions git-svn-id: file:///afs/psi.ch/project/sls_det_software/svn/slsDetectorSoftware@801 951219d9-93cf-4727-9268-0efd64621fa3
103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
#include <Poco/Net/HTTPClientSession.h>
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#include <Poco/Net/HTTPRequest.h>
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#include <Poco/Net/HTTPResponse.h>
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#include <Poco/StreamCopier.h>
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#include <Poco/Path.h>
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#include <Poco/URI.h>
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#include <Poco/Exception.h>
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#include <Poco/Timespan.h>
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#include "JsonBox/Value.h"
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#include <iostream>
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#include <string>
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#include <exception>
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// HTTP timeout in seconds, default is 8
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#define HTTP_TIMEOUT 10
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// Number of connection tries
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#define N_CONNECTION_TRIES 3
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using namespace Poco::Net;
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using namespace Poco;
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using namespace std;
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class RestHelper {
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public:
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~RestHelper(){};
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void init(string hostname, int port){
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/*
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*/
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full_hostname = "http://"+hostname;
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session = new HTTPClientSession(hostname,port );
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session->setKeepAliveTimeout( Timespan( HTTP_TIMEOUT,0) );
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};
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int get_json(string request, string* answer){
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/*
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*/
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uri = new URI(full_hostname+"/"+request);
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string path(uri->getPathAndQuery());
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if (path.empty()) path = "/";
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// send request
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HTTPRequest req(HTTPRequest::HTTP_GET, path, HTTPMessage::HTTP_1_1);
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int code = send_request(session, req, answer);
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return code;
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};
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int get_json(string request, JsonBox::Value* json_value){
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/*
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*/
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uri = new URI(full_hostname+"/"+request);
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string path(uri->getPathAndQuery());
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if (path.empty()) path = "/";
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// send request
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HTTPRequest req(HTTPRequest::HTTP_GET, path, HTTPMessage::HTTP_1_1);
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string answer;
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int code = send_request(session, req, &answer);
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json_value->loadFromString(answer);
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return code;
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};
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private:
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URI * uri;
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HTTPClientSession *session;
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string full_hostname;
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int send_request(HTTPClientSession *session, HTTPRequest &req, string *answer){
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int n=0;
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int code = -1;
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while(n<N_CONNECTION_TRIES){
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try {
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session->sendRequest( (req) );
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HTTPResponse res;
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istream &is = session->receiveResponse(res);
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StreamCopier::copyToString(is, *answer);
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code = res.getStatus();
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if (code != 200){
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cout << "HTTP ERROR " << res.getStatus() << ": " << res.getReason() << endl;
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code = -1;
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}
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return code;
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}
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catch (exception& e){
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cout << "Exception connecting to "<< full_hostname << ": "<< e.what() << ", sleeping " << HTTP_TIMEOUT << " seconds\n";
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sleep(HTTP_TIMEOUT);
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}
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n+=1;
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}
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return code;
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}
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};
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