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