Configuring Different Endpoint Types

When there are multiple environments, to allow easily configuring environment-specific details, ESB API Controller (apictl) supports an additional parameter file. (Please refer Configuring Environment Specific Parameters for more information). You can specify different types of endpoints in this file, as discussed in this section.

ESB supports four (4) main types of endpoints as follows.

  1. HTTP/REST Endpoints
  2. HTTP/SOAP Endpoints
  3. Dynamic Endpoints
  4. AWS Lambda Endpoints

Info

The following fields should be specified as your requirement when setting up different endpoints in the parameters file.

  • endpointType

    To specify the type of the endpoint. Values can be rest, soap, dynamic or aws. (For HTTP/REST Endpoints, you can specify the type as rest. But even if you do not specify the field endpointType at all in the params file, by default it takes the type as rest)

  • endpointRoutingPolicy

    To specify the routing policy to be used. Values can be load_balanced or failover.

  • loadBalanceEndpoints field should be specified if the endpointRoutingPolicy is load_balanced. This field contains the following.

    • production: An array which consists the multiple production endpoints
    • sandbox: An array which consists the multiple sandbox endpoints
    • sessionManagement (Optional): Values can be none, transport, soap, simpleClientSession and if not specified the default value is transport
    • sessionTimeOut (Optional): The number of milliseconds after which the session would time out

  • failoverEndpoints field should be specified if the endpointRoutingPolicy is failover. This field contains the following.

    • production: The primary production endpoint (not an array)
    • sandbox: The primary sandbox endpoint (not an array)
    • productionFailovers: An array which consists failover production endpoints
    • sandboxFailovers: An array which consists failover sandbox endpoints

  • awsLambdaEndpoints field should be specified if the endpointType is aws. This field contains the following.

    • accessMethod: The access method of awslambda endpoint. Mandatory to specify. (Values can be role_supplied or stored)
    • amznRegion: Region where the endpoint is located. Can be chosen from here
    • amznAccessKey: Access Key for endpoint
    • amznSecretKey: Access Secret for endpoint

Let us discuss configuring each of the above endpoint types with separate examples in the following sections.

HTTP/REST Endpoints

This can be subdivided into three (3) main scenarios.

1. HTTP/REST Endpoint - Without load balancing or failover

The following is an example parameters file for this scenario. (Note that you can ignore specifying the endpointType field if you want, because by default it contains the value as rest.)

Example

environments:
  - name: test
    configs:
        endpoints:
            production:
            sandbox:
  - name: dev
    configs: 
        endpointType: rest
        endpoints:
            production:
                url: https://dev.wso2.com
            sandbox:
                url: https://dev.sandbox.wso2.com

2. HTTP/REST Endpoint - With load balancing

The following is an example parameters file for this scenario. (Note that, as mentioned in the above section, you can ignore specifying the endpointType field if you want, because by default it contains the value as rest.)

Example

environments:
  - name: test
    configs:
        endpoints:
            production:
            sandbox:
  - name: dev
    configs:
        endpointType: rest
        endpointRoutingPolicy: load_balanced
        loadBalanceEndpoints:
            production:
                - url: https://dev1.wso2.com
                - url: https://dev2.wso2.com
            sandbox:
                - url: https://dev1.sandbox.wso2.com
                - url: https://dev2.sandbox.wso2.com
            sessionManagement: transport
            sessionTimeOut: 5000

3. HTTP/REST Endpoint - With failover

The following is an example parameters file for this scenario. (Note that, as mentioned in the above sections, you can ignore specifying the endpointType field if you want, because by default it contains the value as rest.)

Example

environments:
  - name: test
    configs:
        endpoints:
            production:
            sandbox:
  - name: dev
    configs:
        endpointType: rest
        endpointRoutingPolicy: failover
        failoverEndpoints:
            production:
                url: https://dev.wso2.com
            productionFailovers:
                - url: https://dev1.wso2.com
                - url: https://dev2.wso2.com
            sandbox:
                url: https://dev.sandbox.wso2.com
            sandboxFailovers:
                - url: https://dev1.sandbox.wso2.com
                - url: https://dev2.sandbox.wso2.com

HTTP/SOAP Endpoints

This too can be subdivided into three (3) main scenarios like in the previous section.

1. HTTP/SOAP Endpoint - Without load balancing or failover

The following is an example parameters file for this scenario. (Make sure to specify the endpointType as soap)

Example

environments:
  - name: test
    configs:
        endpoints:
            production:
            sandbox:
  - name: dev
    configs:
        endpointType: soap
        endpoints:
            production:
                url: https://dev.wso2.com
            sandbox:
                url: https://dev.sandbox.wso2.com

2. HTTP/SOAP Endpoint - With load balancing

The following is an example parameters file for this scenario. (Make sure to specify the endpointType as soap)

Example

environments:
  - name: test
    configs:
        endpoints:
            production:
            sandbox:
  - name: dev
    configs:
        endpointType: soap
        endpointRoutingPolicy: load_balanced
        loadBalanceEndpoints:
            production:
                - url: https://dev1.wso2.com
                - url: https://dev2.wso2.com
            sandbox:
                - url: https://dev1.sandbox.wso2.com
                - url: https://dev2.sandbox.wso2.com
            sessionManagement: soap
            sessionTimeOut: 5000

3. HTTP/SOAP Endpoint - With failover

The following is an example parameters file for this scenario. (Make sure to specify the endpointType as soap)

Example

environments:
  - name: test
    configs:
        endpoints:
            production:
            sandbox:
  - name: dev
    configs:
        endpointType: soap
        endpointRoutingPolicy: failover
        failoverEndpoints:
            production:
                url: https://dev.wso2.com
            productionFailovers:
                - url: https://dev1.wso2.com
                - url: https://dev2.wso2.com
            sandbox:
                url: https://dev.sandbox.wso2.com
            sandboxFailovers:
                - url: https://dev1.sandbox.wso2.com
                - url: https://dev2.sandbox.wso2.com

Dynamic Endpoints

The following is an example parameters file for this scenario. (Make sure to specify the endpointType as dynamic)

Example

environments:
    - name: test
      configs:
        endpoints:
            production:
            sandbox:
    - name: development
      configs:
        endpointType: dynamic

Tip

When importing an API, if you are specifying the endpoint type as dynamic, you can include a message mediation policy with a To header inside the Sequences directory of your API Project. (Refer Adding Dynamic Endpoints to learn more about Dynamic endpoints and message mediations associated with that.)

AWS Lambda Endpoints

This can be subdivided into two (2) main scenarios.

1. AWS Lambda - Using IAM role-supplied temporary AWS credentials

The following is an example parameters file for this scenario. (Make sure to specify the endpointType as aws)

Example

environments:
  - name: test
    configs:
        endpoints:
            production:
            sandbox:
  - name: development
    configs:
        endpointType: aws
        awsLambdaEndpoints:
            accessMethod: role_supplied

2. AWS Lambda - Using stored AWS credentials

The following is an example parameters file for this scenario. (Make sure to specify the endpointType as aws)

Example

environments:
  - name: test
    configs:
        endpoints:
            production:
            sandbox:
  - name: development
    configs:
        endpointType: aws
        awsLambdaEndpoints:
            accessMethod: stored
            amznRegion: us-west-1
            amznAccessKey: jdej3kj34jk3l353k553535b353
            amznSecretKey: 453653nk46j43kewrkj35j2kk32
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