Upgrade and refine for 8.8.7

[sbuettner]

Important

This requires the release of Connectors 8.8.7 to be finished and available on maven public.

Issue

Relates to https://github.com/camunda/team-connectors/issues/1096

Description

This pull request modernizes and simplifies the Camunda Outbound Connector template by removing legacy files, updating documentation, and adopting the latest annotation-based approach for connector development. It consolidates the example to focus on a single, annotation-driven connector, updates dependencies, and aligns the element template and build configuration accordingly.

Connector implementation and template modernization:

• Introduced a new annotation-based connector class MyConnector in src/main/java/io/camunda/example/MyConnector.java, supporting multiple operations (echo and addTwoNumbers) via the @Operation annotation, and removed the legacy record MyConnectorResult. [1] [2]
• Replaced and renamed the element template to element-templates/my-connector.json, updating its operations, properties, and metadata to match the new connector, and removed obsolete template files. [1] [2] [3] [4] [5] [6] [7]

Documentation updates:

• Overhauled README.md to focus on the annotation-based OutboundConnectorProvider approach, updated all class and file references, clarified instructions, and improved the input parameter documentation. [1] [2] [3] [4] [5]

Build and dependency updates:

• Updated Maven dependencies in pom.xml to the latest compatible versions, removed unused test dependencies, and aligned the element template generator configuration with the new connector and template files. [1] [2] [3]

Cleanup of legacy files and configurations:

• Removed .tool-versions file to eliminate unused Java and Maven version pinning.

[Copilot]

Pull request overview

Modernizes the Camunda Outbound Connector template for the 8.8.7 connector SDK line by removing legacy implementations and consolidating around the annotation-based Operations API, updating templates/docs/tests accordingly.

Changes:

• Replaced legacy connector implementations with a single annotation-driven OutboundConnectorProvider (MyConnector) supporting multiple @Operations.
• Updated element template(s), BPMN test process, and integration tests to match the new connector type/template IDs and the echo operation.
• Upgraded Maven dependency versions and simplified test/runtime scaffolding and docs.

Reviewed changes

Copilot reviewed 21 out of 23 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/main/java/io/camunda/example/MyConnector.java	New annotation-based connector provider with echo and addTwoNumbers operations.
src/main/java/io/camunda/example/model/EchoRequest.java	New request model aligned to the echo operation and template generator annotations.
src/main/java/io/camunda/example/model/EchoResponse.java	New response model for the echo operation output.
src/main/java/io/camunda/example/model/Authentication.java	Moved/renamed authentication model and updated template property metadata.
src/main/resources/META-INF/services/io.camunda.connector.api.outbound.OutboundConnectorProvider	Updated SPI registration to load MyConnector via ServiceLoader.
src/main/resources/META-INF/services/io.camunda.connector.api.outbound.OutboundConnectorFunction	Removed SPI entry for the legacy OutboundConnectorFunction implementation.
src/main/resources/icon.svg	Added icon resource referenced by the connector/element template metadata.
src/test/java/io/camunda/example/integration/TestConnectorRuntimeApplication.java	Simplified Spring Boot test app used by integration tests.
src/test/java/io/camunda/example/integration/MyConnectorIntegrationTest.java	Updated/expanded integration tests to validate the echo operation and failure behavior.
src/test/java/io/camunda/example/LocalConnectorRuntime.java	Updated rememberable package/name for the local runtime helper app (still test-scope).
src/test/resources/bpmn/operation-connector-test-process.bpmn	Updated BPMN test process to use the new template/type IDs and the echo operation.
src/test/resources/application.properties	Updated Camunda client property keys for the newer client configuration style.
element-templates/my-connector.json	Replaced prior template(s) with a new template matching the updated connector and operations.
element-templates/template-connector.json	Removed obsolete legacy element template file.
src/main/java/io/camunda/example/operations/MyConnectorProvider.java	Removed old operations-based provider implementation in favor of MyConnector.
src/main/java/io/camunda/example/classic/MyConnectorFunction.java	Removed legacy OutboundConnectorFunction implementation.
src/main/java/io/camunda/dto/MyConnectorResult.java	Removed legacy DTO replaced by EchoResponse.
src/test/java/io/camunda/example/classic/MyFunctionTest.java	Removed tests for the legacy classic connector implementation.
src/test/java/io/camunda/example/classic/MyRequestTest.java	Removed tests for legacy request binding/validation paths.
README.md	Reworked documentation to describe the annotation-based provider approach and updated references.
pom.xml	Bumped connector/camunda versions and updated element-template-generator plugin config for the new connector/template.
.tool-versions	Removed tool version pinning file.

Comments suppressed due to low confidence (2)

src/test/java/io/camunda/example/LocalConnectorRuntime.java:14

• LocalConnectorRuntime is under src/test/java, so it won’t be present in the packaged artifact. If the intent is for users of the template to run the connector locally via this main class (as described in the README), consider moving it to src/main/java (or alternatively adjusting docs to state it’s test-scope).
  src/test/java/io/camunda/example/integration/TestConnectorRuntimeApplication.java:13
• This test application was simplified to an empty @SpringBootApplication, but it still imports a number of now-unused types (e.g., DocumentFactory*, SpringApplication, ImportAutoConfiguration, ElasticsearchRestClientAutoConfiguration, @Bean/@Primary, @MockitoBean). Please remove the unused imports to avoid confusion about required test configuration.

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[johnBgood]

One small comment/idea, and I guess Copilot comments make sense.
Great improvement, thank you!