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Running a simple connector

A runnable connector consists of a Runtime and a build file, in our case this is a build.gradle.kts.

The first thing we need is the Runtime which is the main entry point to the connector application, same as with any other Java program. In this sample we use the BaseRuntime, but this can be extended (take a look at the custom-runtime sample for more information)

The second thing we need is a gradle build file that contains the essential dependencies. We'll need at least the following things:

dependencies {
    implementation(project(":core:control-plane:control-plane-core"))
    
}

Additional dependencies will be added to this list in the future, so be sure to check back regularly!

with that we can build and run the connector from the root directory:

./gradlew clean samples:01-basic-connector:build
java -jar samples/01-basic-connector/build/libs/basic-connector.jar

Note: the above snippet assumes that you did not alter the build file, i.e. the shadow plugin is used and the build artifact resides at the path mentioned above. Also, we assume usage of the Gradle Wrapper, as opposed to a local Gradle installation.

If everything works as intended you should see command-line output similar to this:

INFO 2022-01-13T13:43:57.677973407 Secrets vault not configured. Defaulting to null vault.
INFO 2022-01-13T13:43:57.680158117 Initialized Null Vault
INFO 2022-01-13T13:43:57.851181615 Initialized Core Services
INFO 2022-01-13T13:43:57.852046576 Initialized Schema Registry
INFO 2022-01-13T13:43:57.853010987 Initialized In-Memory Transfer Process Store
INFO 2022-01-13T13:43:57.856956651 Initialized Core Transfer
INFO 2022-01-13T13:43:57.857664924 Initialized In-Memory Asset Index
INFO 2022-01-13T13:43:57.857957714 Initialized In-Memory Contract Definition Store
INFO 2022-01-13T13:43:57.860738605 Initialized Core Contract Service
INFO 2022-01-13T13:43:57.861390422 Initialized In-Memory Contract Negotiation Store
INFO 2022-01-13T13:43:57.862002044 Started Core Services
INFO 2022-01-13T13:43:57.862247712 Started Schema Registry
INFO 2022-01-13T13:43:57.862782289 Started In-Memory Transfer Process Store
INFO 2022-01-13T13:43:57.8635804 Started Core Transfer
INFO 2022-01-13T13:43:57.86371948 Started In-Memory Asset Index
INFO 2022-01-13T13:43:57.863838751 Started In-Memory Contract Definition Store
INFO 2022-01-13T13:43:57.86497334 Started Core Contract Service
INFO 2022-01-13T13:43:57.865146132 Started In-Memory Contract Negotiation Store
INFO 2022-01-13T13:43:57.866073376 edc-e796b518-35f0-4c45-a333-79ca20a6be06 ready

This basic connector - while perfectly fine - does not offer any outward-facing API, nor does it provide any connector-to-connector communication protocols. However, it will serve us as platform to build out more complex scenarios.

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