Camunda REST

??? warning “Experimental module”

**Experimental** module is fully working and tested, but requires additional approbation and usage analytics, 
for this reason, API may potentially undergo minor changes before fully stable.

Module to add REST API for Camunda 7 BPMN module

Dependency¶

Java Kotlin

Dependency build.gradle:

implementation "ru.tinkoff.kora.experimental:camunda-rest-undertow"

Module:

@KoraApp
public interface Application extends CamundaRestUndertowModule { }

Dependency build.gradle.kts:

implementation("ru.tinkoff.kora.experimental:camunda-rest-undertow")

Module:

@KoraApp
interface Application : CamundaRestUndertowModule

Requires Camunda BPMN module to be added.

Configuration¶

Example of the complete configuration described in the CamundaRestConfig class (example values or default values are specified):

Hocon YAML

camunda {
    rest {
        enabled = false //(1)!
        path = "/engine-rest" //(2)!
        port = 8081 //(3)!
        shutdownWait = "30s" //(4)!
        openapi {
            file = [ "openapi.json" ] //(5)!
            enabled = false  //(6)!
            endpoint = "/openapi" //(7)!
            swaggerui {
                enabled = false //(8)!
                endpoint = "/swagger-ui" //(9)!
            }
            rapidoc {
                enabled = false //(10)!
                endpoint = "/rapidoc" //(11)!
            }
        }
        telemetry {
            logging {
                enabled = false //(12)!
                stacktrace = true //(13)!
                mask = "***" //(14)!
                maskQueries = [ ] //(15)!
                maskHeaders = [ "authorization" ] //(16)!
                pathTemplate = true //(17)!
            }
            metrics {
                enabled = true //(18)!
                slo = [ 1, 10, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000, 30000, 60000, 90000 ] //(19)!
            }
            tracing {
                enabled = true //(20)!
            }
        }
    }
}

Enable/disable REST API
Prefix path to REST API
Port on which the REST API server will be started
Maximum time to wait for the server to complete after receiving a floating termination signal
Relative path to OpenAPI files in the resources directory, default is the openapi.json OpenAPI file from Camunda dependencies
The on/off switch of the controller that gives the OpenAPI
Path where OpenAPI will be available
1. If a single OpenAPI file is specified, then represent entire path where file is available
2. If multiple OpenAPI files are specified, is a path prefix to the file name /openapi/{fileName}, taking the specified path and appending the file name to it without the directories and its extension, example of the file someDirectory/my-openapi-1.yaml the file path will be /openapi/my-openapi-1.
On/Off of the controller that gives SwaggerUI
Path where the SwaggerUI will be accessed
On/Off of the controller that gives Rapidoc
Path where Rapidoc will be available
Enables module logging (default false)
Enables call stack logging in case of exception
Mask that is used to hide specified headers and request/response parameters
List of request parameters to be hidden
List of request/response headers that should be hidden
Whether to always use the request path template when logging. The default is to always use the path template, except for the TRACE logging level, which uses the full path.
Enables module metrics (default true)
Configures SLO for DistributionSummary metrics
Enables module tracing (default is true)

camunda:
  rest:
    enabled: false #(1)!
    path: "/engine-rest" #(2)!
    port: 8081 #(3)!
    shutdownWait: "30s" #(4)!
    openapi:
      file: [ "openapi.json" ] #(5)!
      enabled: false  #(6)!
      endpoint: "/openapi" #(7)!
      swaggerui:
        enabled: false #(8)!
        endpoint: "/swagger-ui" #(9)!
      rapidoc:
        enabled: false #(10)!
        endpoint: "/rapidoc" #(11)!
    telemetry:
      logging:
        enabled: false #(12)!
        stacktrace: true #(13)!
        mask: "***" #(14)!
        maskQueries: [ ] #(15)!
        maskHeaders: [ "authorization" ] #(16)!
        pathTemplate: true #(17)!
      metrics:
        enabled: true #(18)!
        slo: [ 1, 10, 50, 100, 200, 500, 1000, 2000, 5000, 10000, 20000, 30000, 60000, 90000 ] #(19)!
      tracing:
        enabled: true #(20)!

Enable/disable REST API
Prefix path to REST API
Port on which the REST API server will be started
Maximum time to wait for the server to complete after receiving a floating termination signal
Relative path to OpenAPI files in the resources directory, default is the openapi.json OpenAPI file from Camunda dependencies
The on/off switch of the controller that gives the OpenAPI
Path where OpenAPI will be available
1. If a single OpenAPI file is specified, then represent entire path where file is available
2. If multiple OpenAPI files are specified, is a path prefix to the file name /openapi/{fileName}, taking the specified path and appending the file name to it without the directories and its extension, example of the file someDirectory/my-openapi-1.yaml the file path will be /openapi/my-openapi-1.
On/Off of the controller that gives SwaggerUI
Path where the SwaggerUI will be accessed
On/Off of the controller that gives Rapidoc
Path where Rapidoc will be available
Enables module logging (default false)
Enables call stack logging in case of exception
Mask that is used to hide specified headers and request/response parameters
List of request parameters to be hidden
List of request/response headers that should be hidden
Whether to always use the request path template when logging. The default is to always use the path template, except for the TRACE logging level, which uses the full path.
Enables module metrics (default true)
Configures SLO for DistributionSummary metrics
Enables module tracing (default is true)

Applications¶

You can register custom jakarta.ws.rs.core.Application with resources for APIs (e.g. for other webapp) by providing them as components in a dependency container.