WSO2 MI, integration timeouts while trying to reach backend

Question

i'm trying to build my integration with Integration Studio, it has to pass through multiple services and send the response to a backend endpoint. This works very well until it tries to call backend, then it goes on timeout state.

Here the XML

 <?xml version="1.0" encoding="UTF-8"?> <api context="/salesforce" name="SFApi" xmlns="http://ws.apache.org/ns/synapse"> <resource methods="POST" uri-template="/anagrafiche"> <inSequence> <property expression="$body//username" name="uri.var.username" scope="default" type="STRING"/> <property expression="$body//password" name="uri.var.password" scope="default" type="STRING"/> <property expression="$body//client_id" name="uri.var.client_id" scope="default" type="STRING"/> <property expression="$body//client_secret" name="uri.var.client_secret" scope="default" type="STRING"/> <property expression="$body//grant_type" name="uri.var.grant_type" scope="default" type="STRING"/> <call> <endpoint key="SFAuth"/> <source type="body"/> </call> <property expression="json-eval($.access_token)" name="uri.var.accessToken" scope="default" type="STRING"/> <header expression="fn:concat('Bearer ', $ctx:uri.var.accessToken)" name="Authorization" scope="transport"/> <call> <endpoint key="SFAnagrafiche"/> </call> <property expression="json-eval($.records)" name="uri.var.records" scope="default" type="STRING"/> <call> <endpoint key="BEAnagrafiche"/> <source type="body"/> <target type="body"/> </call> <respond/> </inSequence> <outSequence/> <faultSequence/> </resource> </api>

The schema goes on until it calls BEAnagrafiche's endpoint, which has the following http REST url to a laravel project in POST method:

http://localhost/webidoo-project/public/api/anagrafiche

Here BEAnagrafiche's XML:

 <?xml version="1.0" encoding="UTF-8"?> <endpoint name="BEAnagrafiche" xmlns="http://ws.apache.org/ns/synapse"> <http method="post" uri-template="http://localhost/webidoo-project/public/api/anagrafiche"> <suspendOnFailure> <initialDuration>-1</initialDuration> <progressionFactor>1.0</progressionFactor> </suspendOnFailure> <markForSuspension> <retriesBeforeSuspension>0</retriesBeforeSuspension> </markForSuspension> </http> <property name="data" value="$ctx:uri.var.records"/> </endpoint>

And the backend service:

 public function saveAnagrafiche(Request $request) { return 'hello'; try { DB::beginTransaction(); $data = $request->json(); foreach($data as $d) { if(isset($d['attributes'])) unset($d['attributes']); $user = new User($d); $user->save(); } DB::commit(); return response()->json([ 'status' => true, 'message' => 'Anagrafiche salvate correttamente' ], 200); } catch(\Exception $e) { DB::rollback(); return response()->json([ 'status' => false, 'message' => 'Errore durante il salvataggio delle anagrafiche', 'error' => $e->getMessage() ], 500); } }

Here below also last messages from mi's console:

passthru-http.properties:

 # # Copyright (c) 2019, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. # # WSO2 Inc. 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. # # ############################################## # # WARNING: Don't edit the file manually unless you are not using the deployment.toml file. # ############################################## ## This file contains the configuration parameters used by the Pass-through HTTP transport rest.dispatcher.service=__MultitenantDispatcherService rest_uri_api_regex=\\w+://.+:\\d+/t/.*|\\w+://.+\\w+/t/.*|^(/t/).* rest_uri_proxy_regex=\\w+://.+:\\d+/services/t/.*|\\w+://.+\\w+/services/t/.*|^(/services/t/).* http.socket.reuseaddr=true http.user.agent.preserve = false worker_pool_size_max = 400 valid.max.message.size.in.bytes = 81920 worker_pool_size_core = 400 http.max.connection.per.host.port = 32767 io_buffer_size = 16384 http.server.preserve = true http.connection.disable.keepalive = false http.socket.timeout=600000 force.json.message.reverseProxyMode = false worker_pool_queue_length = -1 http.headers.preserve=Content-Type

synapse.properties:

 # # Copyright (c) 2019, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. # # WSO2 Inc. 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. # ############################################## # # WARNING: Don't edit the file manually unless you are not using the deployment.toml file. # ############################################## opentracing.enable = false inbound.threads.core = 20 synapse.debugger.port.command = 9005 synapse.debugger.port.event = 9006 internal.https.api.port = 9154 synapse.xpath.func.extensions = org.wso2.micro.integrator.mediation.security.vault.xpath.SecureVaultLookupXPathFunctionProvider,org.wso2.micro.integrator.mediation.security.vault.external.hashicorp.HashiCorpVaultLookupXPathFunctionProvider jaeger.sender.agent.host = localhost synapse.commons.json.preserve.namespace = false jaeger.reporter.log.spans = false internal.http.api.enabled = true inbound.port.offset.enable = false synapse.temp_data.chunk.size = 3072 mediation.flow.statistics.enable = false mediation.flow.statistics.collect.all = false internal.http.api.port = 9191 synapse.threads.core = 20 opentracing.zipkin.backend.url = http://localhost:9411/api/v2/spans jaeger.reporter.flush.interval = 10000 inbound.threads.max = 100 synapse.global_timeout_interval = 120000 jaeger.sampler.manager.host = localhost opentracing.zipkin.enable = false synapse.script.mediator.pool.size = 15 jaeger.reporter.max.queue.size = 100 mediation.flow.statistics.tracer.collect.properties = false synapse.threads.max = 100 jaeger.sender.agent.port = 6831 statistics.clean.enable = true mediation.flow.statistics.tracer.collect.payloads = false statistics.clean.interval = 1000 jaeger.sampler.manager.port = 5778 synapse.sal.endpoints.sesssion.timeout.default=600000 synapse.carbon.ext.tenant.info=org.wso2.micro.integrator.initializer.handler.MITenantInfoConfigurator mediation.flow.statistics.event.consume.interval=1000 mediation.flow.statistics.event.clean.interval=15000

Answer 1

According to the shared screenshot of the error message, it seems a socket timeout has occurred between the client and the server. The timeout has occurred only after the server has accepted request headers and body.

1. Have you tried invoking the backend service directly?
2. If it is working properly, how much time it takes to respond?
3. Have you observed any latency at your client-side?
4. Enable the wire logs as in this doc and share it.