Setting up External Service using EndPoints

[Alex T]

Hi All,

Firstly, many thanks James to confirm my last post about the GOGS issue for the CDelivery.

In order to go further with my POC, I decided to setup an external GOGS service to use my existing GOGS server that we are using.

I followed the instruction from this link integrating_external_services and services but no much luck  !  (I couldn't figure out how to inspect the log files or if there are any ?  nothing from the openshift log !  ) 

So, I tried this using the camel CDI simple to query my external KIE-Server.

I makes sure that the following code works perfectly fine on my server in the camel CDI sample  :

    @Inject

    @Uri("http://101.25.101.238:9080/kie-server-620/services/rest/server/containers/myCheese)

Then I changed the IP and port as  service as :

@Uri("http://{{service:kie-server}}/services/rest/server/containers/myCheese)

Finally, I set up the external service as :

NAME         CLUSTER_IP       EXTERNAL_IP   PORT(S)    SELECTOR                            AGE

kie-server   172.30.152.243   <none>        9080/TCP   <none>                              4m

as per the document, if a service doesn't have a 'Selector', then the EndPointController won't create a new one. So, I have to manually create the EndPoint for my external Service.

NAME         ENDPOINTS           AGE

kie-server   101.25.101.238:9080   5m

I am expecting the URI should become :

http://172.30.152.243:9080/services/rest/server/containers/myCheese   

at runtime, but the service proxy should translate this to use the EndPoint value ? 

However, this wasn't the case and I am getting HTTP 404 as following :

</batch-execution>]. Caused by: [org.apache.camel.http.common.HttpOperationFailedException - HTTP operation failed invok

ing http://172.30.152.243:9080/services/rest/server/containers/myCheese with statusCode: 404]

org.apache.camel.http.common.HttpOperationFailedException: HTTP operation failed invoking http://172.30.152.243:9080/ser

vices/rest/server/containers/myCheese with statusCode: 404

Seems like no translation ?  or the translation should have been happened before that ?

Inside the camelCDI pod, I can see the server's env variables :

KIE_SERVER_PORT=tcp://172.30.152.243:9080

KIE_SERVER_PORT_9080_TCP=tcp://172.30.152.243:9080

KIE_SERVER_PORT_9080_TCP_ADDR=172.30.152.243

KIE_SERVER_PORT_9080_TCP_PORT=9080

KIE_SERVER_PORT_9080_TCP_PROTO=tcp

KIE_SERVER_SERVICE_HOST=172.30.152.243

KIE_SERVER_SERVICE_PORT=9080

Nothing about the EndPoints.  Any ideas how this works ?

Many Thanks for help suggestions.

Regards

Alex

[Alex T]

Further investigating by rsh into the camelcdi pod, then perform a <curl> on the url :

   <curl -I http://172.30.152.243:9080/containers/myCheese

   HTTP/1.1 404 Not Found

   Connection: keep-alive

   X-Powered-By: Undertow/1

   Server: WildFly/8

   Content-Length: 74

   Content-Type: text/html

   Date: Tue, 08 Sep 2015 12:57:59 GMT

 

   Interestingly, it is hitting the Wildfly server which is hosting the kie-server.  However, getting a 404 ! 

However, if I am <curl> on the actual Kie-Server IP :

curl -I http://10.25.10.238:9080/kie-server-620/services/rest/server/containers

HTTP/1.1 401 Unauthorized

Expires: 0

Cache-Control: no-cache, no-store, must-revalidate

X-Powered-By: Undertow/1

Server: WildFly/8

Pragma: no-cache

Date: Tue, 08 Sep 2015 13:04:33 GMT

Connection: keep-alive

WWW-Authenticate: Basic realm="KIE Server"

Content-Type: text/html;charset=UTF-8

Content-Length: 71

which gives me 'Unauthorized' error, 401.

No sure why the different response ?  

[Alex T]

The IP address is 101.25.101.238,  sry the typo.

[Jimmi Dyson]

You seem to be hitting different paths? /containers/myCheese vs /kie-server-620/services/rest/server/containers

That would mean the actual target server would return different responses, no?

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[Alex T]

Thanks for the reply Jimmi.

I figured out the problem and this is a bit embarrassing !  The setup was right from the beginning and it is as simple as this has been documented  ! It was my bad.  I sweared  I only changed the IP to {service:name},  some how the "kie-server-620" path in the new URL was missing (you can see the url in my initial post), hence, the problem. Adding the extra url and all works fine ! 

Well, this proves that the External Service using Endpoint is working fine. (BTW, there is a typo in the Openshift Origin document, in the sample json, metadata->name in the Service is different from the one in Endpoint which is wrong. They should be the same as explained in the Kubernetes doc.)

Anyway, my main task for this is to get the GOGS external repository to work with the CDelivery service and this is still no working.

After replacing the original GOGS service with the external GOGS service, seems like all the other related services such as forge, jenkins are still having the old IP in their ENV variables :

GOGS_PORT=tcp://172.30.163.51:80

GOGS_PORT_80_TCP=tcp://172.30.163.51:80

My new GOGS service IP :

NAME                     CLUSTER_IP       EXTERNAL_IP   PORT(S)     SELECTOR                                    AGE

gogs                     172.30.33.175    <none>        80/TCP      <none>                                      22m

with Endpoint :

NAME                     ENDPOINTS           AGE

gogs                     10.35.224.78:443    1h

I am not sure which services are using GOGS, so bounced Vagrant to resolved this. (Anyone is having the list ?) 

When Click Projects->Sign-In to create new project, I am getting 

Failed to load resource: the server responded with a status of 503 (Service Unavailable)

libs-375df221.js:11 [Forge] failed to load https://vagrant.f8:8443/api/v1/proxy/namespaces/default/services/fabric8-fo…ic%20YWxleC50c3VpOk1zZXJ2MTIzIQ%3D%3D&_gogsEmail=gogsadmin%40fabric8.local. status: 503 data: Error: 'dial tcp 172.17.0.18:8080: connection refused'

Trying to reach: 'http://172.17.0.18:8080/api/forge/repos?_gogsAuth=Basic+YWxleC50c3VpOk1zZXJ2MTIzIQ%3D%3D&_gogsEmail=gogsadmin%40fabric8.local' 

I guess this is because the GOGS login.  

Trying to look into details, I guess this is because of  GOGS http vs https ?  For security reason, our GOGS has been configured to use https only, but the CDelivery seems like expecting http.  What is the best way to change this ?

Thanks 

Alex