fix(db): New config property to set the name of the db schema

app/src/main/java/io/apicurio/registry/storage/impl/sql/AbstractSqlRegistryStorage.java

@@ -177,7 +177,6 @@ public abstract class AbstractSqlRegistryStorage implements RegistryStorage {
     private static int DB_VERSION = Integer
             .valueOf(IoUtil.toString(AbstractSqlRegistryStorage.class.getResourceAsStream("db-version")))
             .intValue();
-    private static final Object inmemorySequencesMutex = new Object();
 
     private static final ObjectMapper mapper = new ObjectMapper();
 
@@ -234,6 +233,10 @@ protected SqlStatements sqlStatements() {
     @Info(category = "storage", description = "SQL init", availableSince = "2.0.0.Final")
     boolean initDB;
 
+    @ConfigProperty(name = "apicurio.sql.db-schema", defaultValue = "*")
+    @Info(category = "storage", description = "Database schema name (only needed when running two instances of Registry against the same database, in multiple schemas)", availableSince = "3.0.6")
+    String dbSchema;
+
     @Inject
     @ConfigProperty(name = "apicurio.events.kafka.topic", defaultValue = "registry-events")
     @Info(category = "storage", description = "Storage event topic")
@@ -327,8 +330,15 @@ protected void initialize(HandleFactory handleFactory, boolean emitStorageReadyE
      */
     private boolean isDatabaseInitializedRaw(Handle handle) {
         log.info("Checking to see if the DB is initialized.");
-        int count = handle.createQuery(this.sqlStatements.isDatabaseInitialized()).mapTo(Integer.class).one();
-        return count > 0;
+        if ("*".equals(dbSchema)) {
+            int count = handle.createQuery(this.sqlStatements.isDatabaseInitialized()).mapTo(Integer.class)
+                    .one();
+            return count > 0;
+        } else {
+            int count = handle.createQuery(this.sqlStatements.isDatabaseSchemaInitialized()).bind(0, dbSchema)
+                    .mapTo(Integer.class).one();
+            return count > 0;
+        }
     }
 
     /**

app/src/main/java/io/apicurio/registry/storage/impl/sql/CommonSqlStatements.java

@@ -16,6 +16,19 @@ public abstract class CommonSqlStatements implements SqlStatements {
     public CommonSqlStatements() {
     }
 
+    /**
+     * @see SqlStatements#isDatabaseInitialized()
+     */
+    @Override
+    public String isDatabaseInitialized() {
+        return "SELECT count(*) AS count FROM information_schema.tables WHERE table_name = 'apicurio'";
+    }
+
+    @Override
+    public String isDatabaseSchemaInitialized() {
+        return "SELECT count(*) AS count FROM information_schema.tables WHERE table_schema = ? AND table_name = 'apicurio'";
+    }
+
     /**
      * @see io.apicurio.registry.storage.impl.sql.SqlStatements#databaseInitialization()
      */

app/src/main/java/io/apicurio/registry/storage/impl/sql/H2SqlStatements.java

@@ -45,6 +45,11 @@ public String isDatabaseInitialized() {
         return "SELECT COUNT(*) AS count FROM information_schema.tables WHERE table_name = 'APICURIO'";
     }
 
+    @Override
+    public String isDatabaseSchemaInitialized() {
+        return "SELECT COUNT(*) AS count FROM information_schema.tables WHERE table_schema = ? AND table_name = 'APICURIO'";
+    }
+
     /**
      * @see io.apicurio.registry.storage.impl.sql.SqlStatements#getNextSequenceValue()
      */

app/src/main/java/io/apicurio/registry/storage/impl/sql/MySQLSqlStatements.java

@@ -36,14 +36,6 @@ public boolean isForeignKeyViolation(Exception error) {
         return error.getMessage().contains("foreign key constraint fails");
     }
 
-    /**
-     * @see io.apicurio.registry.storage.impl.sql.SqlStatements#isDatabaseInitialized()
-     */
-    @Override
-    public String isDatabaseInitialized() {
-        return "SELECT count(*) AS count FROM information_schema.tables WHERE table_name = 'artifacts'";
-    }
-
     /**
      * @see io.apicurio.registry.storage.impl.sql.SqlStatements#getNextSequenceValue()
      */

app/src/main/java/io/apicurio/registry/storage/impl/sql/PostgreSQLSqlStatements.java

@@ -36,14 +36,6 @@ public boolean isForeignKeyViolation(Exception error) {
         return error.getMessage().contains("violates foreign key constraint");
     }
 
-    /**
-     * @see io.apicurio.registry.storage.impl.sql.SqlStatements#isDatabaseInitialized()
-     */
-    @Override
-    public String isDatabaseInitialized() {
-        return "SELECT count(*) AS count FROM information_schema.tables WHERE table_name = 'artifacts'";
-    }
-
     /**
      * @see io.apicurio.registry.storage.impl.sql.SqlStatements#getNextSequenceValue()
      */

app/src/main/java/io/apicurio/registry/storage/impl/sql/SQLServerSqlStatements.java

@@ -37,14 +37,6 @@ public boolean isForeignKeyViolation(Exception error) {
         return error.getMessage().contains("conflicted with the FOREIGN KEY constraint");
     }
 
-    /**
-     * @see SqlStatements#isDatabaseInitialized()
-     */
-    @Override
-    public String isDatabaseInitialized() {
-        return "SELECT count(*) AS count FROM information_schema.tables WHERE table_name = 'artifacts'";
-    }
-
     @Override
     public String upsertBranch() {
         return """

app/src/main/java/io/apicurio/registry/storage/impl/sql/SqlStatements.java

@@ -28,6 +28,11 @@ public interface SqlStatements {
      */
     public String isDatabaseInitialized();
 
+    /**
+     * A statement that returns 'true' if the database (with schema) has already been initialized.
+     */
+    public String isDatabaseSchemaInitialized();
+
     /**
      * A sequence of statements needed to initialize the database.
      */

app/src/main/resources/application.properties

@@ -163,6 +163,7 @@ apicurio.import.work-dir=${java.io.tmpdir}
 ## SQL Storage
 apicurio.storage.sql.kind=h2
 apicurio.sql.init=true
+apicurio.sql.db-schema=*
 
 apicurio.datasource.url=jdbc:h2:mem:db_${quarkus.uuid}
 apicurio.datasource.username=sa

docs/modules/ROOT/partials/getting-started/ref-registry-all-configs.adoc

@@ -815,6 +815,11 @@ The following {registry} configuration options are available for each component
 |`true`
 |
 |Kafka sql storage topic auto create
+|`apicurio.sql.db-schema`
+|`string`
+|
+|`3.0.6`
+|Database schema name (only needed when running two instances of Registry against the same database, in multiple schemas)
 |`apicurio.sql.init`
 |`boolean`
 |`true`