Invariant Violation: Unable to find a consumer for

[mynameisgv]

Hello,

I had the same problem reported in issue-118.
I tried the branch fix-118.
Now i get

Invariant Violation: Unable to find a consumer for xxxxxx
I do not have any consumer definition in the config file. Only api, plugin(acl and auth)

Thanks

[waytoavnish]

Any update on this?
Facing same issue

[aragorn3012]

I have the same problem running Kongfig v1.5.3 against Kong 0.12.3 - both running in Docker.
Kongfig has been working fine for the last 12 months, until I added the first consumer specific plugin in Kong.

After succesfull creation of a consumer specific plugin, every attempt to change the Kong configuration with Kongfig fails with the following error:

Invariant Violation: Unable to find a consumer for 5f905965-2fa9-4887-ad76-a03cc9dac146
 Invariant Violation: Unable to find a consumer for 5f905965-2fa9-4887-ad76-a03cc9dac146
    at invariant (/usr/local/lib/node_modules/kongfig/node_modules/invariant/invariant.js:40:15)
    at getConsumerById (/usr/local/lib/node_modules/kongfig/lib/stateSelector.js:22:29)
    at fixPluginUsername (/usr/local/lib/node_modules/kongfig/lib/stateSelector.js:59:33)
    at Array.map (<anonymous>)
    at fixApiPluginUsername (/usr/local/lib/node_modules/kongfig/lib/stateSelector.js:67:42)
    at Array.map (<anonymous>)
    at exports.default (/usr/local/lib/node_modules/kongfig/lib/stateSelector.js:72:40)
    at /usr/local/lib/node_modules/kongfig/lib/readKongApi.js:46:64
    at process._tickCallback (internal/process/next_tick.js:68:7) 

With 5f905965-2fa9-4887-ad76-a03cc9dac146 the Kong consumer id that was used in the consumer specific plugin.

Note that Kongfig fails even if the change that is to be applied is completely unrelated

The issue can be recreated as follows to a clean install of Kong :

Add the first API using Kongfig:

host: 'kong:8001'                                   
apis:                                               
  - name: first-api                                 
    attributes:                                     
      uris:                                         
        - /v1/first-api                             
      strip_uri: false                              
      preserve_host: true                           
      upstream_url: 'http://first-api'              
      retries: 5                                    
      upstream_connect_timeout: 60000               
      upstream_read_timeout: 60000                  
      upstream_send_timeout: 60000                  
      https_only: false                             
      http_if_terminated: true                      

Output:

Loading config kongfig-first-api.yml            
Apply config to kong:8001                               
Kong version: 0.12.3                                    
                                                        
POST http://kong:8001/apis                              
 { uris: [ '/v1/first-api' ],                           
  strip_uri: false,                                     
  preserve_host: true,                                  
  upstream_url: 'http://first-api',                     
  retries: 5,                                           
  upstream_connect_timeout: 60000,                      
  upstream_read_timeout: 60000,                         
  upstream_send_timeout: 60000,                         
  https_only: false,                                    
  http_if_terminated: true,                             
  name: 'first-api' }                                   
201 Created { created_at: 1533882703207,                
  strip_uri: false,                                     
  id: '0e44a4a4-4072-47ff-b206-5bb5eabb6cbe',           
  name: 'first-api',                                    
  http_if_terminated: true,                             
  https_only: false,                                    
  retries: 5,                                           
  uris: [ '/v1/first-api' ],                            
  upstream_url: 'http://first-api',                     
  upstream_send_timeout: 60000,                         
  upstream_read_timeout: 60000,                         
  upstream_connect_timeout: 60000,                      
  preserve_host: true }                                 

Create a consumer test-user :

host: 'kong:8001'                                   
consumers:
  - username: test-user
    acls: []
    credentials: []

Output:

Loading config kongfig-consumer.yml
Apply config to kong:8001
Kong version: 0.12.3

POST http://kong:8001/consumers
 { username: 'test-user' }
201 Created { created_at: 1533882819570,
  username: 'test-user',
  id: 'c0c16e6f-c437-42cd-bc38-1f3c688aafdc' }

Create a second API with a rate-limiting policy for consumer test-user:

host: 'kong:8001'
apis:
  - name: second-api
    plugins:
      - name: rate-limiting
        attributes:
          username: test-user
          enabled: true
          config:
            fault_tolerant: true
            redis_database: 0
            policy: local
            limit_by: consumer
            redis_timeout: 2000
            hide_client_headers: false
            redis_port: 6379
            second: 100
    attributes:
      uris:
        - /v1/second-api
      strip_uri: false
      preserve_host: true
      upstream_url: 'http://second-api'
      retries: 5
      upstream_connect_timeout: 60000
      upstream_read_timeout: 60000
      upstream_send_timeout: 60000
      https_only: false
      http_if_terminated: true

consumers:
  - username: test-user

Output:

Loading config kongfig-second-api.yml
Apply config to kong:8001
Kong version: 0.12.3
consumer test-user is up to date

POST http://kong:8001/apis
 { uris: [ '/v1/second-api' ],
  strip_uri: false,
  preserve_host: true,
  upstream_url: 'http://second-api',
  retries: 5,
  upstream_connect_timeout: 60000,
  upstream_read_timeout: 60000,
  upstream_send_timeout: 60000,
  https_only: false,
  http_if_terminated: true,
  name: 'second-api' }
201 Created { created_at: 1533883280053,
  strip_uri: false,
  id: '110b32f8-f5a4-4f0b-9e50-ffcc7ebdfe71',
  name: 'second-api',
  http_if_terminated: true,
  https_only: false,
  retries: 5,
  uris: [ '/v1/second-api' ],
  upstream_url: 'http://second-api',
  upstream_send_timeout: 60000,
  upstream_read_timeout: 60000,
  upstream_connect_timeout: 60000,
  preserve_host: true }

POST http://kong:8001/apis/110b32f8-f5a4-4f0b-9e50-ffcc7ebdfe71/plugins
 { consumer_id: 'c0c16e6f-c437-42cd-bc38-1f3c688aafdc',
  enabled: true,
  config:
   { fault_tolerant: true,
     redis_database: 0,
     policy: 'local',
     limit_by: 'consumer',
     redis_timeout: 2000,
     hide_client_headers: false,
     redis_port: 6379,
     second: 100 },
  name: 'rate-limiting' }
201 Created { created_at: 1533883280116,
  config:
   { second: 100,
     redis_database: 0,
     policy: 'local',
     limit_by: 'consumer',
     redis_timeout: 2000,
     hide_client_headers: false,
     redis_port: 6379,
     fault_tolerant: true },
  id: '2d637380-7bbc-4e54-a547-5a99a02c7a76',
  enabled: true,
  name: 'rate-limiting',
  api_id: '110b32f8-f5a4-4f0b-9e50-ffcc7ebdfe71',
  consumer_id: 'c0c16e6f-c437-42cd-bc38-1f3c688aafdc' }

Now try to add a third API:

host: 'kong:8001'
apis:
  - name: third-api
    attributes:
      uris:
        - /v1/third-api
      strip_uri: false
      preserve_host: true
      upstream_url: 'http://third-api'
      retries: 5
      upstream_connect_timeout: 60000
      upstream_read_timeout: 60000
      upstream_send_timeout: 60000
      https_only: false
      http_if_terminated: true

Error:

Loading config /config/kongfig-third-api.yml
Apply config to kong:8001
Kong version: 0.12.3
Invariant Violation: Unable to find a consumer for c0c16e6f-c437-42cd-bc38-1f3c688aafdc
 Invariant Violation: Unable to find a consumer for c0c16e6f-c437-42cd-bc38-1f3c688aafdc
    at invariant (/usr/local/lib/node_modules/kongfig/node_modules/invariant/invariant.js:40:15)
    at getConsumerById (/usr/local/lib/node_modules/kongfig/lib/stateSelector.js:22:29)
    at fixPluginUsername (/usr/local/lib/node_modules/kongfig/lib/stateSelector.js:59:33)
    at Array.map (<anonymous>)
    at fixApiPluginUsername (/usr/local/lib/node_modules/kongfig/lib/stateSelector.js:67:42)
    at Array.map (<anonymous>)
    at exports.default (/usr/local/lib/node_modules/kongfig/lib/stateSelector.js:72:40)
    at /usr/local/lib/node_modules/kongfig/lib/readKongApi.js:46:64
    at process._tickCallback (internal/process/next_tick.js:68:7)

[mynameisgv]

Please let me know if anyone has a solution for this.

[mynameisgv]

I tested this with branch. feat/consumer-refs.
This branch works fine for this issue. @CyExy was this branch merged to master?
#80 mentions some were merged to master.
can you please confirm.

[ojizero]

As far as I can tell this issue happens only when there are plugins defined for a specific consumer, while having the ignoreConsumer option set to true (either explicitly or implicitly by not defining it in the Kongfig schema).

Example is defining schema as

apis:
  - name: some-api
    ensure: "present"
    attributes:
      upstream_url: http://some.upstream
      uris: /some-uri

Running it as is would work all the time, but if you define a consumer manually and attach any plugin to it, this is when the error happens

Rerunning the above schema now fails with the error Invariant Violation: Unable to find a consumer for 5b032027-3687-4f10-aca2-d4191f1d9b72 (5b032027-3687-4f10-aca2-d4191f1d9b72 is the consumer ID I manually created).

Tracing the code it seems that if the ignoreConsumer flag is set to true (which it is if you don't provide a consumers array longer than zero in length in your schema), Kongfig won't try to fetch existing consumers, which causes it to fail in fixPluginUsername in the stateSelector.

I tried to manually modify the code of cli-apply to always have ignoreConsumer set to false and it worked in my testing environment (although I'm not sure of it's side effects).

@aragorn3012 afixing it in your thrid API schema would be to add the consumers as a non-empty array, this way you force Kongfig to fetch existing consumers.

Not sure but I think there should be an option for it such that we force ignoreConsumers to false 🤔 since I think it is a valid use case for the consumers to not be defined in the schema always 🤔

Currently the workaround we're going to go with is add the following consumers array to our schema (since at the moment control consumers through Kongfig isn't our desired use case)

consumers:
  - username: _____
    ensure: removed