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Spring Cloud Zuul Route Cassandra Store

A Spring Cloud Cassandra store for Zuul routes.

Features

Extends the Spring Cloud's ProxyRouteLocator with capabilities of loading routes out of the configured Cassandra database.

Instead of configuring your routes through zuul.routes like fallows:

zuul:
  ignoredServices: '*'
  routes:
    resource:
      path: /api/**
      serviceId: rest-service
    oauth2:
      path: /uaa/**
      serviceId: oauth2-service
      stripPrefix: false

You can store the routes in Cassandra.

Keep in mind that the other properties except for routes are still relevant.

zuul:
  ignoredServices: '*'
  store:
    cassandra:
      enabled: true

Setup

Add the Spring Cloud starter to your project:

<dependency>
  <groupId>io.jmnarloch</groupId>
  <artifactId>zuul-route-cassandra-spring-cloud-starter</artifactId>
  <version>1.0.0</version>
</dependency>

Connect to Cassandra and create a keyspace:

CREATE KEYSPACE IF NOT EXISTS zuul WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 3 };

USE zuul;

CREATE TABLE zuul_routes (
    id text,
    path text,
    service_id text,
    url text,
    strip_prefix boolean,
    retryable boolean,
    PRIMARY KEY(id)
);

Register CassandraOperations bean within your application:

@SpringBootApplication
public static class Application {

    @Bean
    public Cluster cluster() {
        return Cluster.builder()
                .addContactPoints(InetAddress.getLoopbackAddress())
                .withPort(9142)
                .build();
    }

    @Bean
    public CassandraOperations cassandraTemplate(Cluster cluster) {
        return new CassandraTemplate(cluster.connect("zuul"));
    }
}

Configure the Cassandra to be used for loading the Zuul routes:

zuul:
  store:
    cassandra:
      enabled: true

Finally enable the Zuul proxy with @EnableZuulProxyStore - use this annotation as a replacement for standard @EnableZuulProxy:

@EnableZuulProxyStore
@SpringBootApplication
public static class Application {

    ...
}

Properties

zuul.store.cassandra.enabled=true# false by default

License

Apache 2.0