chore(db): use Flyway migration to set up discovery plugins

src/main/java/io/cryostat/discovery/ContainerDiscovery.java

@@ -200,18 +200,6 @@ void onStart(@Observes StartupEvent evt) {
             return;
         }
 
-        DiscoveryNode universe = DiscoveryNode.getUniverse();
-        if (DiscoveryNode.getRealm(getRealm()).isEmpty()) {
-            DiscoveryPlugin plugin = new DiscoveryPlugin();
-            DiscoveryNode node = DiscoveryNode.environment(getRealm(), BaseNodeType.REALM);
-            plugin.realm = node;
-            plugin.builtin = true;
-            universe.children.add(node);
-            node.parent = universe;
-            plugin.persist();
-            universe.persist();
-        }
-
         logger.debugv("Starting {0} client", getRealm());
 
         queryContainers();

src/main/java/io/cryostat/discovery/CustomDiscovery.java

@@ -35,11 +35,9 @@
 import io.cryostat.targets.TargetConnectionManager;
 import io.cryostat.util.URIUtil;
 
-import io.quarkus.runtime.StartupEvent;
 import io.vertx.mutiny.core.eventbus.EventBus;
 import jakarta.annotation.security.RolesAllowed;
 import jakarta.enterprise.context.ApplicationScoped;
-import jakarta.enterprise.event.Observes;
 import jakarta.inject.Inject;
 import jakarta.transaction.Transactional;
 import jakarta.ws.rs.Consumes;
@@ -74,21 +72,6 @@ public class CustomDiscovery {
     @ConfigProperty(name = ConfigProperties.CONNECTIONS_FAILED_TIMEOUT)
     Duration timeout;
 
-    @Transactional
-    void onStart(@Observes StartupEvent evt) {
-        DiscoveryNode universe = DiscoveryNode.getUniverse();
-        if (DiscoveryNode.getRealm(REALM).isEmpty()) {
-            DiscoveryPlugin plugin = new DiscoveryPlugin();
-            DiscoveryNode node = DiscoveryNode.environment(REALM, BaseNodeType.REALM);
-            plugin.realm = node;
-            plugin.builtin = true;
-            universe.children.add(node);
-            node.parent = universe;
-            plugin.persist();
-            universe.persist();
-        }
-    }
-
     @Transactional(rollbackOn = {JvmIdException.class})
     @POST
     @Path("/api/v2/targets")

src/main/java/io/cryostat/discovery/Discovery.java

@@ -108,9 +108,6 @@ public class Discovery {
 
     @Transactional
     void onStart(@Observes StartupEvent evt) {
-        // ensure lazily initialized entries are created
-        DiscoveryNode.getUniverse();
-
         DiscoveryPlugin.<DiscoveryPlugin>findAll().list().stream()
                 .filter(p -> !p.builtin)
                 .forEach(

src/main/java/io/cryostat/discovery/DiscoveryNode.java

@@ -107,9 +107,7 @@ public boolean hasChildren() {
 
     public static DiscoveryNode getUniverse() {
         return DiscoveryNode.find(NODE_TYPE, BaseNodeType.UNIVERSE.getKind())
-                .<DiscoveryNode>singleResultOptional()
-                .orElseGet(
-                        () -> environment(BaseNodeType.UNIVERSE.toString(), BaseNodeType.UNIVERSE));
+                .<DiscoveryNode>singleResult();
     }
 
     public static Optional<DiscoveryNode> getRealm(String name) {

src/main/java/io/cryostat/discovery/JDPDiscovery.java

@@ -71,18 +71,6 @@ void onStart(@Observes StartupEvent evt) {
             return;
         }
 
-        DiscoveryNode universe = DiscoveryNode.getUniverse();
-        if (DiscoveryNode.getRealm(REALM).isEmpty()) {
-            DiscoveryPlugin plugin = new DiscoveryPlugin();
-            DiscoveryNode node = DiscoveryNode.environment(REALM, BaseNodeType.REALM);
-            plugin.realm = node;
-            plugin.builtin = true;
-            universe.children.add(node);
-            node.parent = universe;
-            plugin.persist();
-            universe.persist();
-        }
-
         logger.debug("Starting JDP client");
         jdp.addListener(this);
         try {

src/main/java/io/cryostat/discovery/KubeApiDiscovery.java

@@ -140,18 +140,6 @@ void onStart(@Observes @Priority(1) StartupEvent evt) {
             return;
         }
 
-        DiscoveryNode universe = DiscoveryNode.getUniverse();
-        if (DiscoveryNode.getRealm(REALM).isEmpty()) {
-            DiscoveryPlugin plugin = new DiscoveryPlugin();
-            DiscoveryNode node = DiscoveryNode.environment(REALM, BaseNodeType.REALM);
-            plugin.realm = node;
-            plugin.builtin = true;
-            universe.children.add(node);
-            node.parent = universe;
-            plugin.persist();
-            universe.persist();
-        }
-
         logger.debugv("Starting {0} client", REALM);
     }
 

src/main/resources/application-dev.properties

@@ -9,7 +9,6 @@ quarkus.http.cors.access-control-allow-credentials=true
 # quarkus.http.cors.methods=GET,PUT,POST,PATCH,OPTIONS
 # quarkus.http.cors.access-control-max-age=1s
 
-quarkus.hibernate-orm.database.generation=drop-and-create
 quarkus.hibernate-orm.log.sql=true
 
 quarkus.log.category."org.jboss.resteasy.reactive.common.core.AbstractResteasyReactiveContext".level=DEBUG

src/main/resources/application.properties

@@ -1,6 +1,7 @@
 quarkus.flyway.baseline-on-migrate=true
 quarkus.flyway.baseline-version=4.0.0
 quarkus.flyway.migrate-at-start=true
+quarkus.flyway.validate-migration-naming=true
 
 quarkus.naming.enable-jndi=true
 cryostat.discovery.jdp.enabled=false

src/main/resources/db/migration/V4.0.0__cryostat.sql

@@ -3,7 +3,7 @@
 
     create sequence Credential_SEQ start with 1 increment by 50;
 
-    create sequence DiscoveryNode_SEQ start with 1 increment by 50;
+    create sequence DiscoveryNode_SEQ start with 1 increment by 1;
 
     create sequence MatchExpression_SEQ start with 1 increment by 50;
 
@@ -121,3 +121,42 @@
        add constraint FKl0dhd7qeayg54dcoblpww6x34 
        foreign key (discoveryNode) 
        references DiscoveryNode;
+
+
+    /* Insert the Universe node first explicitly to ensure it gets the first ID in sequence */
+    insert into DiscoveryNode(
+        id,
+        labels,
+        name,
+        nodeType,
+        parentNode
+    ) values((select nextval('DiscoveryNode_SEQ')), '{}'::jsonb, 'Universe', 'Universe', null);
+
+    /* Select the Universe node, then insert Realm nodes for each builtin discovery plugin with the universe as their parent */
+    with universe as (
+        select id from DiscoveryNode where (nodeType = 'Universe')
+    )
+    insert into DiscoveryNode(
+        id,
+        labels,
+        name,
+        nodeType,
+        parentNode
+    ) values
+    ((select nextval('DiscoveryNode_SEQ')), '{}'::jsonb, 'Custom Targets', 'Realm', (select id from universe)),
+    ((select nextval('DiscoveryNode_SEQ')), '{}'::jsonb, 'KubernetesApi', 'Realm', (select id from universe)),
+    ((select nextval('DiscoveryNode_SEQ')), '{}'::jsonb, 'JDP', 'Realm', (select id from universe)),
+    ((select nextval('DiscoveryNode_SEQ')), '{}'::jsonb, 'Podman', 'Realm', (select id from universe)),
+    ((select nextval('DiscoveryNode_SEQ')), '{}'::jsonb, 'Docker', 'Realm', (select id from universe));
+
+    /* For each Realm node, register a corresponding plugin */
+    insert into DiscoveryPlugin(
+        id,
+        builtin,
+        callback,
+        credential_id,
+        realm_id
+    )
+    select gen_random_uuid(), true, null, null, DiscoveryNode.id
+    from DiscoveryNode
+    where nodeType = 'Realm';