Phil 12.16.15

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7:00 – 9:00, 10:30 – 4:30 VTX

  • Since I’ll be missing the scrum today, sent Aaron an email with status. Which is basically until I know if we’re going to have a semantic network for our derived data, I don’t know how to do a taxonomy.
  • Got RabbitMQ running, following the Local RabbitMQ Setup in Confluence. To open a command prompt as full admin, you have to run it from the ‘start’ input field with Ctrl-shift-enter
  • Running the NLPService with errors. Doesn’t seem to be a permissions issue. Sent Balaji an email, but here are the errors for future reference: 
    2015-12-16 08:25:24.449 ERROR 3588 --- [pool-8-thread-1] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_NLPSERVICE/PFELDMAN-NCS - was unable to sen
 heartbeat!

com.sun.jersey.api.client.ClientHandlerException: org.apache.http.conn.HttpHostConnectException: Connection to http://localhost:8761 refused
        at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:184)
        at com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:120)
        at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:28)
        at com.sun.jersey.api.client.Client.handle(Client.java:648)
        at com.sun.jersey.api.client.WebResource.handle(WebResource.java:670)
        at com.sun.jersey.api.client.WebResource.put(WebResource.java:211)
        at com.netflix.discovery.DiscoveryClient.makeRemoteCall(DiscoveryClient.java:1097)
        at com.netflix.discovery.DiscoveryClient.makeRemoteCall(DiscoveryClient.java:1060)
        at com.netflix.discovery.DiscoveryClient.access$500(DiscoveryClient.java:105)
        at com.netflix.discovery.DiscoveryClient$HeartbeatThread.run(DiscoveryClient.java:1583)
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.http.conn.HttpHostConnectException: Connection to http://localhost:8761 refused
        at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:190)
        at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:151)
        at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:125)
        at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:640)
        at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479)
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:827)
        at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:170)
        ... 14 common frames omitted
Caused by: java.net.ConnectException: Connection refused: connect
        at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
        at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
        at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
        at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
        at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
        at java.net.PlainSocketImpl.connect(Unknown Source)
        at java.net.SocksSocketImpl.connect(Unknown Source)
        at java.net.Socket.connect(Unknown Source)
        at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:127)
        at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180)
        ... 21 common frames omitted


2015-12-16 08:25:26,620 ERROR [pool-9-thread-1] com.netflix.discovery.DiscoveryClient [nlp-service-local] Can't get a response from http://localhost:8761/eurek
/apps/
Can't contact any eureka nodes - possibly a security group issue?
com.sun.jersey.api.client.ClientHandlerException: org.apache.http.conn.HttpHostConnectException: Connection to http://localhost:8761 refused
        at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:184) ~[jersey-apache-client4-1.11.jar!/:1.11]
        at com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:120) ~[jersey-client-1.11.jar!/:1.11]
        at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:28) ~[eureka-client-1.1.147.jar!/:1.1.147]
        at com.sun.jersey.api.client.Client.handle(Client.java:648) ~[jersey-client-1.11.jar!/:1.11]
        at com.sun.jersey.api.client.WebResource.handle(WebResource.java:670) ~[jersey-client-1.11.jar!/:1.11]
        at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74) ~[jersey-client-1.11.jar!/:1.11]
        at com.sun.jersey.api.client.WebResource$Builder.get(WebResource.java:503) ~[jersey-client-1.11.jar!/:1.11]
        at com.netflix.discovery.DiscoveryClient.getUrl(DiscoveryClient.java:1567) [eureka-client-1.1.147.jar!/:1.1.147]
        at com.netflix.discovery.DiscoveryClient.makeRemoteCall(DiscoveryClient.java:1113) [eureka-client-1.1.147.jar!/:1.1.147]
        at com.netflix.discovery.DiscoveryClient.makeRemoteCall(DiscoveryClient.java:1060) [eureka-client-1.1.147.jar!/:1.1.147]
        at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:835) [eureka-client-1.1.147.jar!/:1.1.147]
        at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:746) [eureka-client-1.1.147.jar!/:1.1.147]
        at com.netflix.discovery.DiscoveryClient.access$1400(DiscoveryClient.java:105) [eureka-client-1.1.147.jar!/:1.1.147]
        at com.netflix.discovery.DiscoveryClient$CacheRefreshThread.run(DiscoveryClient.java:1723) [eureka-client-1.1.147.jar!/:1.1.147]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [na:1.8.0_66]
        at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_66]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_66]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_66]
        at java.lang.Thread.run(Unknown Source) [na:1.8.0_66]
Caused by: org.apache.http.conn.HttpHostConnectException: Connection to http://localhost:8761 refused
        at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:190) ~[httpclient-4.2.1.jar!/:4.2.1]
        at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:151) ~[httpclient-4.2.1.jar!/:4.2.1]
        at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:125) ~[httpclient-4.2.1.jar!/:4.2.1]
        at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:640) ~[httpclient-4.2.1.jar!/:4.2.1]
        at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479) ~[httpclient-4.2.1.jar!/:4.2.1]
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906) ~[httpclient-4.2.1.jar!/:4.2.1]
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:827) ~[httpclient-4.2.1.jar!/:4.2.1]
        at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:170) ~[jersey-apache-client4-1.11.jar!/:1.11]
        ... 18 common frames omitted
Caused by: java.net.ConnectException: Connection refused: connect
        at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method) ~[na:1.8.0_66]
        at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) ~[na:1.8.0_66]
        at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) ~[na:1.8.0_66]
        at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) ~[na:1.8.0_66]
        at java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[na:1.8.0_66]
        at java.net.PlainSocketImpl.connect(Unknown Source) ~[na:1.8.0_66]
        at java.net.SocksSocketImpl.connect(Unknown Source) ~[na:1.8.0_66]
        at java.net.Socket.connect(Unknown Source) ~[na:1.8.0_66]
        at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:127) ~[httpclient-4.2.1.jar!/:4.2.1]
        at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180) ~[httpclient-4.2.1.jar!/:4.2.1]
        ... 25 common frames omitted

2015-12-16 08:25:26.652 ERROR 3588 --- [pool-9-thread-1] com.netflix.discovery.DiscoveryClient    : DiscoveryClient_NLPSERVICE/PFELDMAN-NCS - was unable to ref
esh its cache! status = org.apache.http.conn.HttpHostConnectException: Connection to http://localhost:8761 refused

com.sun.jersey.api.client.ClientHandlerException: org.apache.http.conn.HttpHostConnectException: Connection to http://localhost:8761 refused
        at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:184)
        at com.sun.jersey.api.client.filter.GZIPContentEncodingFilter.handle(GZIPContentEncodingFilter.java:120)
        at com.netflix.discovery.EurekaIdentityHeaderFilter.handle(EurekaIdentityHeaderFilter.java:28)
        at com.sun.jersey.api.client.Client.handle(Client.java:648)
        at com.sun.jersey.api.client.WebResource.handle(WebResource.java:670)
        at com.sun.jersey.api.client.WebResource.access$200(WebResource.java:74)
        at com.sun.jersey.api.client.WebResource$Builder.get(WebResource.java:503)
        at com.netflix.discovery.DiscoveryClient.getUrl(DiscoveryClient.java:1567)
        at com.netflix.discovery.DiscoveryClient.makeRemoteCall(DiscoveryClient.java:1113)
        at com.netflix.discovery.DiscoveryClient.makeRemoteCall(DiscoveryClient.java:1060)
        at com.netflix.discovery.DiscoveryClient.getAndStoreFullRegistry(DiscoveryClient.java:835)
        at com.netflix.discovery.DiscoveryClient.fetchRegistry(DiscoveryClient.java:746)
        at com.netflix.discovery.DiscoveryClient.access$1400(DiscoveryClient.java:105)
        at com.netflix.discovery.DiscoveryClient$CacheRefreshThread.run(DiscoveryClient.java:1723)
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        at java.util.concurrent.FutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.http.conn.HttpHostConnectException: Connection to http://localhost:8761 refused
        at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:190)
        at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:151)
        at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:125)
        at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:640)
        at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479)
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906)
        at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:827)
        at com.sun.jersey.client.apache4.ApacheHttpClient4Handler.handle(ApacheHttpClient4Handler.java:170)
        ... 18 common frames omitted
Caused by: java.net.ConnectException: Connection refused: connect
        at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
        at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
        at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
        at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
        at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
        at java.net.PlainSocketImpl.connect(Unknown Source)
        at java.net.SocksSocketImpl.connect(Unknown Source)
        at java.net.Socket.connect(Unknown Source)
        at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:127)
        at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:180)
        ... 25 common frames omitted
  • It turns out that these errors are related to service registering with the discovery process. In local environment you don’t have a service registry running. You can run it if you want and that’s a different process(project). Irrespective of those service trying to register errors, the REST calls will still work.
    • The way to remove the service registration (remove the noise errors) in local env is, in src/main/resources/nlpservice-config.xml, change this
    • <serviceRegistry>http://localhost:8761/eureka/</serviceRegistry&gt;
    • to
    • <serviceRegistry>none</serviceRegistry>
    • Do the gradle build again and run it.
    • And a useful thread: 
      Patakula, Balaji 11:44a 
Hello Phil

Me 11:44a 
Hiya

Patakula, Balaji 11:45a 
the url should be localhost:8870/nlpservice/ner

Patakula, Balaji 11:45a 
with no double slash after the port

Me 11:46a 
localhost:8870/nlpservice/ner gives the same error in my setup

Patakula, Balaji 11:46a 
also the body should be like { "text": "my name is Phil Feldman."}

Patakula, Balaji 11:46a 
or any text that u want

Me 11:47a 
So it's not the JSON object on the NLPService page?


Patakula, Balaji 11:48a 
if u import the nlp.json into the postman

Patakula, Balaji 11:48a 
all the requests will be already there

Me 11:49a 
Import how?
Patakula, Balaji 11:49a 
there is an import menu on postman

Me 11:50a 
Looking for it...

Patakula, Balaji 11:50a 
the middle panel on the top black menu last item

Me 11:50a 
Got it.

Patakula, Balaji 11:51a 
just import that json downloaded from the wiki

Patakula, Balaji 11:51a 
and u should have the collection now in ostman 

Patakula, Balaji 11:51a 
postman 



Patakula, Balaji 11:51a 
and u can just click to send

Me 11:52a 
Added the file. Now what.

Patakula, Balaji 11:52a 
can u share the screen

Me 11:52a 
using what?

Patakula, Balaji 11:52a 
u have the nlp service running?

Patakula, Balaji 11:53a 
just in IM 

Patakula, Balaji 11:53a 
there is a present screen on the bottom of this chat

Me 11:53a 
nlp service is running. It extracted my entity as well. Now I'm curious about that bigger json file

Patakula, Balaji 11:54a 
that json file is just the REST calls that are supported by the service

Patakula, Balaji 11:54a 
it is just a way of documenting the REST 

Patakula, Balaji 11:54a 
so some one can just import the file and execute the commands

Me 11:54a 
So how does it get ingested?

Patakula, Balaji 11:55a 
which one?

Me 11:55a 
nlp.json

Patakula, Balaji 11:55a 
its not ingested. NLP is service. It gets the requests through Rabbit queue from the Crawler ( another service)

Patakula, Balaji 11:56a 
if u need to test the functionality of NLP, the way u can test and see the results is using the REST interface that we are doing now

Me 11:56a 
so nlp.json is a configuration file for postman?

Patakula, Balaji 11:56a 
thats right

Me 11:57a 
Ah. Not obvious.

Patakula, Balaji 11:57a 
Is Aaron sit next to you?

Me 11:58a 
No, he stepped out for a moment. He should be back in 30 minutes or so.

Patakula, Balaji 11:58a 
may be u can get the data flow from him and he knows how to work with all these tools

Me 11:58a 
Yeah, he introduced me to Postman.

Me 11:58a 
But he thought nlp.json was something to send to the NLPService.

Patakula, Balaji 11:58a 
may be he can give a brain dump of the stuff and how services interact, how data flows etc.,

Me 11:59a 
I'm starting to see how it works. Was not expecting to see Erlang.

Me 12:00p 
Can RabbitMQ coordinate services under development on my machine with services stood up on a test environment, such as AWS?

Patakula, Balaji 12:01p 
u can document all the REST calls that a service exposes by hand writing all those ...or just export the REST calls from postman and every one who wants to use the service can just import that json and work with the REST interface

Me 12:01p 
Got it.

Patakula, Balaji 12:01p 
RabbitMq is written in Erlang and we interface with it for messaging

Patakula, Balaji 12:02p 
yes, u can configure the routes to work that way

Patakula, Balaji 12:02p 
meaning mismatch services between different environments

Me 12:02p 
Yeah, I see that. Not that surprising that a communications manager would be written in Erlang. But still a rare thing to see.

Me 12:03p 
Is there a collection of services stood up that way for development?

Patakula, Balaji 12:04p 
u installed rabbit yesterday locally on ur machine

Me 12:04p 
Yes, otherwise none of this would be working?

Patakula, Balaji 12:04p 
so u can run various services now orchestrated through ur local rabbit



Me 12:05p 
Understood. Are there currently stood-up services that can be accessed on an ad-hoc basis, or would I need to do that?

Patakula, Balaji 12:05p 
Rabbit is only for streaming messages. Every service exposes both streaming ( Rabbitmq messages) and REST interfaces

Patakula, Balaji 12:06p 
there are no services stood up in adhoc env currently. There is a CI ,QA and Demo env

Patakula, Balaji 12:06p 
all those envs have all the services running

Me 12:07p 
What's Cl?

Me 12:07p 
I'd guess continuous integration, but it's ambiguous.

Patakula, Balaji 12:07p 
continuous integration. Every code checkin automatically builds the system, runs the tests, creates docker images and deploys those services and starts them 

Me 12:08p 
Can these CI services be pinged directly?

Patakula, Balaji 12:08p 
ye

Patakula, Balaji 12:08p 
yes

Me 12:09p 
Do you need to be on the VPN?

Patakula, Balaji 12:09p 
http://dockerapps.philfeldman.com:8763/ <http://dockerapps.philfeldman.com:8763/>  

Patakula, Balaji 12:09p 
those are the services running

Patakula, Balaji 12:09p 
and dockerapps is the host machine for CI

Me 12:09p 
And how do I access the NLPService on dockerapps?

Patakula, Balaji 12:10p 
access meaning? u want t send the REST requests to CI service?

Me 12:10p 
Yeah. Bad form?

Patakula, Balaji 12:11p 
just in the REST, change the localhost to dockerapps.philfeldman.com

Me 12:12p 
I get a 'Could not get any response'

Me 12:12p 
dockerapps.philfeldman.com:8870/nlpservice/ner

Patakula, Balaji 12:12p 
sorry, NLP is running on a different host 10.18.7.177
  • Learning about RabbitMQ
  • Installing the google chrome Postman plugin
    • Set the POST option
    • Set RAW
    • Header to Content-Type
    • Value to application/json
    • URL is localhost:8870//nlpservice/ner
    • place the JSON in the ‘Body’ tag

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