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*
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