Hi Rasika, Thank you for the clarification , and as our offline chat we are sending multiple network calls to the BPS is that not become issue come into the production ? .
Thanks and Regards Tharindu. On Fri, Mar 20, 2015 at 11:37 PM, Rasika Perera <[email protected]> wrote: > Hi Lakmali, > > +1 for the explanation. In your solution, I think HTTP HEAD[1] is better > to testing accessibility of the server endpoint. > > var httpClient = new > Packages.org.apache.http.impl.client.DefaultHttpClient(); > var *httpHead* = new Packages.org.apache.http.client.methods.*HttpHead* > (endpoint); > var response = httpClient.execute(*httpHead*); > BPSRunning = true; > > [1] > http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/client/methods/HttpHead.html > > Thank you > > On Fri, Mar 20, 2015 at 11:53 AM, Lakmali Baminiwatta <[email protected]> > wrote: > >> Thanks Ruchira for the information. >> >> On 19 March 2015 at 18:00, Ruchira Wageesha <[email protected]> wrote: >> >>> Following are the possible options that I can think. >>> >>> 1. Patching XHR to get rid of the log message >>> 2. Hiding the error from log4j, but AFAIK, then it will not log any >>> error from XHR >>> 3. Using any Java's http-client directly from Jaggery[a] to do the HTTP >>> calls instead of XHR >>> 4. Using any Java's http-client to check the endpoint status, and >>> continue original HTTP call with XHR >>> >>> [a] >>> https://developer.mozilla.org/en-US/docs/Mozilla/Projects/Rhino/Scripting_Java >>> >>> /Ruchira >>> >>> On Thu, Mar 19, 2015 at 5:18 PM, Lakmali Baminiwatta <[email protected]> >>> wrote: >>> >>>> Hi Ruchira, >>>> >>>> In APIM and APPM we talk to the BPS server and fetch Human Tasks >>>> available. For that when the user is login to the admin-dashboard jaggery >>>> app, we do a login call to BPS server using XMLHttpRequest. At this point, >>>> if the BPS is not running we are getting this connection refused error in >>>> the logs. We need to handle this. >>>> >>>> As Tharindu mentioned, XMLHttpRequestHostObject.java uses >>>> log.error(e.getMessage(), >>>> e); [1]. Therefore we can't get rid of this stack trace in the log by >>>> just catching the exception. >>>> >>>> Is there any method in jaggery that we can use to check whether server >>>> is up and running before doing the send call and handle this? Appreciate >>>> any help on this. >>>> >>>> [1] >>>> https://github.com/wso2/jaggery/blob/0.9.0.ALPHA4.wso2v4/components/hostobjects/org.jaggeryjs.hostobjects.xhr/src/main/java/org/jaggeryjs/hostobjects/xhr/XMLHttpRequestHostObject.java >>>> [2]https://wso2.org/jira/browse/APPM-587 >>>> [3]https://wso2.org/jira/browse/APIMANAGER-3139 >>>> >>>> Thanks, >>>> Lakmali >>>> >>>> On 18 March 2015 at 08:57, Tharindu Dharmarathna <[email protected]> >>>> wrote: >>>> >>>>> Hi Ruchira, >>>>> >>>>> We want to carch the exception according to connection refused >>>>> exception from the jaggery side . Due to logging of this exception from >>>>> Hostobject We couldn't remove this exception come from the console. >>>>> >>>>> Is there any way of check a server is up and running from jaggery side >>>>> . If there's a way we can avoid exception come from the console. >>>>> >>>>> Thanks >>>>> Tharindu >>>>> >>>>> On Wed, Mar 18, 2015 at 2:06 AM, Ruchira Wageesha <[email protected]> >>>>> wrote: >>>>> >>>>>> What is the issue with going try/catch blocks? >>>>>> >>>>>> /Ruchira >>>>>> >>>>>> On Tue, Mar 17, 2015 at 5:56 PM, Tharindu Dharmarathna < >>>>>> [email protected]> wrote: >>>>>> >>>>>>> Hi all, >>>>>>> >>>>>>> According to public jira [1] how can we handle connection refused >>>>>>> exception come from this issue . This come from the send method. >>>>>>> >>>>>>> code snippest for this issue >>>>>>> >>>>>>>> >>>>>>>> try{ >>>>>>>> var xhr = new XMLHttpRequest(); >>>>>>>> var site = require("/site/conf/site.json"); >>>>>>>> var endpoint = >>>>>>>> site.workflows.applicationWorkFlowServerURL+"AuthenticationAdmin"; >>>>>>>> xhr.open("POST", endpoint); >>>>>>>> var payload = '<soap:Envelope xmlns:soap=" >>>>>>>> http://www.w3.org/2003/05/soap-envelope"; xmlns:aut=" >>>>>>>> http://authentication.services.core.carbon.wso2.org";><soap:Header/><soap:Body><aut:login><aut:username>' >>>>>>>> + username + '</aut:username><aut:password>' + password + >>>>>>>> '</aut:password><aut:remoteAddress>localhost</aut:remoteAddress></aut:login></soap:Body></soap:Envelope>'; >>>>>>>> xhr.send(payload); >>>>>>>> var cookie = (xhr.getAllResponseHeaders()); >>>>>>>> log.info(xhr.readyState); >>>>>>>> //session.put("workflowCookie",cookie.split(";")[0].split(":")[1]); >>>>>>>> var sessionCookie = xhr.getResponseHeader("Set-Cookie"); >>>>>>>> session.put("workflowCookie",sessionCookie); >>>>>>>> }catch (e) { >>>>>>>> // log.error(e.message); >>>>>>>> } >>>>>>> >>>>>>> >>>>>>> Exception come from the following jaggery hostobject code >>>>>>> >>>>>>> private static void executeRequest(Context cx, >>>>>>>> XMLHttpRequestHostObject xhr) throws ScriptException { >>>>>>>> try { >>>>>>>> xhr.httpClient.executeMethod(xhr.method); >>>>>>>> xhr.statusLine = xhr.method.getStatusLine(); >>>>>>>> xhr.responseHeaders = xhr.method.getResponseHeaders(); >>>>>>>> updateReadyState(cx, xhr, HEADERS_RECEIVED); >>>>>>>> byte[] response = xhr.method.getResponseBody(); >>>>>>>> if (response.length > 0) { >>>>>>>> xhr.responseText = new String(response); >>>>>>>> } >>>>>>>> Header contentType = xhr.method.getResponseHeader("Content-Type"); >>>>>>>> if (contentType != null) { >>>>>>>> xhr.responseType = contentType.getValue(); >>>>>>>> } >>>>>>>> updateReadyState(cx, xhr, DONE); >>>>>>>> } catch (IOException e) { >>>>>>>> log.error(e.getMessage(), e); >>>>>>>> throw new ScriptException(e); >>>>>>>> } finally { >>>>>>>> xhr.method.releaseConnection(); >>>>>>>> } >>>>>>>> } >>>>>>> >>>>>>> XMLHttpRequestHostObject.java >>>>>>> >>>>>>> [1] - https://wso2.org/jira/browse/APIMANAGER-3139 >>>>>>> >>>>>>> Thanks and regards >>>>>>> >>>>>>> >>>>>>> *Tharindu Dharmarathna*Associate Software Engineer >>>>>>> WSO2 Inc.; http://wso2.com >>>>>>> lean.enterprise.middleware >>>>>>> >>>>>>> mobile: *+94779109091 <%2B94779109091>* >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> >>>>>> *Ruchira Wageesha**Associate Technical Lead* >>>>>> *WSO2 Inc. - lean . enterprise . middleware | wso2.com >>>>>> <http://wso2.com>* >>>>>> >>>>>> *email: [email protected] <[email protected]>, blog: >>>>>> ruchirawageesha.blogspot.com <http://ruchirawageesha.blogspot.com>, >>>>>> mobile: +94 77 5493444 <%2B94%2077%205493444>* >>>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> >>>>> *Tharindu Dharmarathna*Associate Software Engineer >>>>> WSO2 Inc.; http://wso2.com >>>>> lean.enterprise.middleware >>>>> >>>>> mobile: *+94779109091 <%2B94779109091>* >>>>> >>>>> _______________________________________________ >>>>> Dev mailing list >>>>> [email protected] >>>>> http://wso2.org/cgi-bin/mailman/listinfo/dev >>>>> >>>>> >>>> >>>> >>>> -- >>>> Lakmali Baminiwatta >>>> Senior Software Engineer >>>> WSO2, Inc.: http://wso2.com >>>> lean.enterprise.middleware >>>> mobile: +94 71 2335936 >>>> blog : lakmali.com >>>> >>>> >>> >>> >>> -- >>> >>> *Ruchira Wageesha**Associate Technical Lead* >>> *WSO2 Inc. - lean . enterprise . middleware | wso2.com >>> <http://wso2.com>* >>> >>> *email: [email protected] <[email protected]>, blog: >>> ruchirawageesha.blogspot.com <http://ruchirawageesha.blogspot.com>, >>> mobile: +94 77 5493444 <%2B94%2077%205493444>* >>> >> >> >> >> -- >> Lakmali Baminiwatta >> Senior Software Engineer >> WSO2, Inc.: http://wso2.com >> lean.enterprise.middleware >> mobile: +94 71 2335936 >> blog : lakmali.com >> >> >> _______________________________________________ >> Dev mailing list >> [email protected] >> http://wso2.org/cgi-bin/mailman/listinfo/dev >> >> > > > -- > With Regards, > > *Rasika Perera* > Software Engineer > M: +94 71 680 9060 E: [email protected] > LinkedIn: http://lk.linkedin.com/in/rasika90 > > WSO2 Inc. www.wso2.com > lean.enterprise.middleware > > _______________________________________________ > Dev mailing list > [email protected] > http://wso2.org/cgi-bin/mailman/listinfo/dev > > -- *Tharindu Dharmarathna*Associate Software Engineer WSO2 Inc.; http://wso2.com lean.enterprise.middleware mobile: *+94779109091*
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