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An API/Schema registry - stores APIs and Schemas.

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Verify Build Workflow Automated Release Notes by gren

Apicurio Registry

An API/Schema registry - stores and retrieves APIs and Schemas.

Build Configuration

This project supports several build configuration options that affect the produced executables.

By default, mvn clean install produces an executable JAR with the dev Quarkus configuration profile enabled, and in-memory persistence implementation.

Apicurio Registry supports 3 persistence implementations:

  • In-Memory
  • KafkaSQL
  • SQL

If you enable one, a separate set of artifacts is produced with the persistence implementation available.

Additionally, there are 2 main configuration profiles:

  • dev - suitable for development, and
  • prod - for production environment.

Getting started

./mvnw clean install -DskipTests
cd app/
../mvnw quarkus:dev

This should result in Quarkus and the in-memory registry starting up, with the ui and APIs available on localhost port 8080. Here are some links you can point your browser to once registry is started:

Build Options

  • -Pprod enables Quarkus's prod configuration profile, which uses configuration options suitable for a production environment, e.g. a higher logging level.
  • -Psql enables a build of storage/sql module and produces apicurio-registry-storage-sql-<version>-all.zip. This artifact uses H2 driver in dev mode, and PostgreSQL driver in prod mode.
  • -Pkafkasql enables a build of the storage/kafkasql module and produces the apicurio-registry-storage-kafkasql-<version>-all.zip artifact.
  • -Pnative (experimental) builds native executables. See Building a native executable.
  • -Ddocker (experimental) builds docker images. Make sure that you have the docker service enabled and running. If you get an error, try sudo chmod a+rw /var/run/docker.sock.

Runtime Configuration

The following parameters are available for executable files:

SQL

  • In the dev mode, the application expects an H2 server running at jdbc:h2:tcp://localhost:9123/mem:registry.
  • In the prod mode, you have to provide connection configuration for a PostgreSQL server as follows:
Option Command argument Env. variable
Data Source URL -Dquarkus.datasource.jdbc.url REGISTRY_DATASOURCE_URL
DS Username -Dquarkus.datasource.username REGISTRY_DATASOURCE_USERNAME
DS Password -Dquarkus.datasource.password REGISTRY_DATASOURCE_PASSWORD

To see additional options, visit:

KafkaSQL

./mvnw clean install -Pprod -Pkafkasql -DskipTests builds the KafkaSQL artifact. The newly built runner can be found in /storage/kafkasql/target

java -jar apicurio-registry-storage-kafkasql-<version>-SNAPSHOT-runner.jar

Should result in Quarkus and the registry starting up, with the ui and APIs available on localhost port 8080. By default, this will look for a kafka instance on localhost:9092, see kafka-quickstart.

Alternatively this can be connected to a secured kafka instance. For example, the following command provides the runner with the necessary details to connect to a kafka instance using a PKCS12 certificate for TLS authentication and scram-sha-512 credentials for user authorisation.

java \
-Dregistry.kafka.common.bootstrap.servers=<kafka_bootstrap_server_address> \
-Dregistry.kafka.common.ssl.truststore.location=<truststore_file_location>\
-Dregistry.kafka.common.ssl.truststore.password=<truststore_file_password> \
-Dregistry.kafka.common.ssl.truststore.type=PKCS12 \
-Dregistry.kafka.common.security.protocol=SASL_SSL \
-Dregistry.kafka.common.sasl.mechanism=SCRAM-SHA-512 \
-Dregistry.kafka.common.sasl.jaas.config='org.apache.kafka.common.security.scram.ScramLoginModule required username="<username>" password="<password>";' \
-jar storage/kafkasql/target/apicurio-registry-storage-kafkasql-2.1.6-SNAPSHOT-runner.jar

This will start up the registry with the persistence managed by the external kafka cluster.

Docker containers

Every time a commit is pushed to master an updated set of docker images are built and pushed to Docker Hub. There are several docker images to choose from, one for each storage option. The images include:

Run one of the above docker images like this:

docker run -it -p 8080:8080 apicurio/apicurio-registry-mem

The same configuration options are available for the docker containers, but only in the form of environment variables (The command line parameters are for the java executable and at the moment it's not possible to pass them into the container). Each docker image will support the environment variable configuration options documented above for their respective storage type.

There are a variety of docker image tags to choose from when running the registry docker images. Each release of the project has a specific tag associated with it. So release 1.2.0.Final has an equivalent docker tag specific to that release. We also support the following moving tags:

  • latest-snapshot : represents the most recent docker image produced whenever the master branch is updated
  • latest-release : represents the latest stable (released) build of Apicurio Registry
  • latest : represents the absolute newest build - essentially the newer of latest-release or latest-snapshot

Examples

Run Apicurio Registry with Postgres:

  • Compile using mvn clean install -DskipTests -Pprod -Psql -Ddocker

  • Then create a docker-compose file test.yml:

version: '3.1'

services:
  postgres:
    image: postgres
    environment:
      POSTGRES_USER: apicurio-registry
      POSTGRES_PASSWORD: password
  app:
    image: apicurio/apicurio-registry-sql:2.0.0-SNAPSHOT
    ports:
      - 8080:8080
    environment:
      REGISTRY_DATASOURCE_URL: 'jdbc:postgresql://postgres/apicurio-registry'
      REGISTRY_DATASOURCE_USERNAME: apicurio-registry
      REGISTRY_DATASOURCE_PASSWORD: password
  • Run docker-compose -f test.yml up

Security

You can enable authentication for the application web console and core REST API using a server based on OpenID Connect (OIDC). The same server realm and users are federated across the application web console and core REST API using Open ID Connect so that you only require one set of credentials. In order no enable this integration, you just need to set the following environment variables.

Option Env. variable
AUTH_ENABLED Whether to enable authentication or not
KEYCLOAK_URL Server url
KEYCLOAK_REALM Security realm
KEYCLOAK_API_CLIENT_ID The client for the api
KEYCLOAK_UI_CLIENT_ID The client for the ui

Note that you will need to have everything created before starting the application, the realm and the two clients.

Eclipse IDE

Some notes about using the Eclipse IDE with the Apicurio Registry codebase. Before importing the registry into your workspace, we recommend some configuration of the Eclipse IDE.

Lombok Integration

We use the Lombok code generation utility in a few places. This will cause problems when Eclipse builds the sources unless you install the Lombok+Eclipse integration. To do this, either download the Lombok JAR or find it in your .m2/repository directory (it will be available in .m2 if you've done a maven build of the registry). Once you find that JAR, simply "run" it (e.g. double-click it) and using the resulting UI installer to install Lombok support in Eclipse.

Maven Dependency Plugin (unpack, unpack-dependencies)

We use the maven-dependency-plugin in a few places to unpack a maven module in the reactor into another module. For example, the app module unpacks the contents of the ui module to include/embed the user interface into the running application. Eclipse does not like this. To fix this, configure the Eclipse Maven "Lifecycle Mappings" to ignore the usage of maven-dependency-plugin.

  • Open up Window->Preferences
  • Choose Maven->Lifecycle Mappings
  • Click the button labeled Open workspace lifecycle mappings metadata
  • This will open an XML file behind the preferences dialog. Click Cancel to close the Preferences.
  • Add the following section to the file:
    <pluginExecution>
      <pluginExecutionFilter>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-dependency-plugin</artifactId>
        <versionRange>3.1.2</versionRange>
        <goals>
          <goal>unpack</goal>
          <goal>unpack-dependencies</goal>
        </goals>
      </pluginExecutionFilter>
      <action>
        <ignore />
      </action>
    </pluginExecution>
  • Now go back into Maven->Lifecycle Mappings -> Maven->Lifecycle Mappings and click the Reload workspace lifecycle mappings metadata button.
  • If you've already imported the Apicurio projects, select all of them and choose Maven->Update Project.

Prevent Eclipse from aggressively cleaning generated classes

We use some Google Protobuf files and a maven plugin to generate some Java classes that get stored in various modules' target directories. These are then recognized by m2e but are sometimes deleted during the Eclipse "clean" phase. To prevent Eclipse from over-cleaning these files, find the os-maven-plugin-1.6.2.jar JAR in your .m2/repository directory and copy it into $ECLIPSE_HOME/dropins.

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