feat(idgen): Start Implementation of NoSQL with the ID Generation Framework

gradle/libs.versions.toml

@@ -24,6 +24,7 @@ hive = "3.1.3"
 iceberg = "1.9.2" # Ensure to update the iceberg version in regtests to keep regtests up-to-date
 quarkus = "3.25.4"
 immutables = "2.11.3"
+jmh = "1.37"
 picocli = "4.7.7"
 scala212 = "2.12.19"
 spark35 = "3.5.6"
@@ -76,6 +77,9 @@ jandex = { module = "io.smallrye.jandex:jandex", version ="3.4.0" }
 javax-servlet-api = { module = "javax.servlet:javax.servlet-api", version = "4.0.1" }
 junit-bom = { module = "org.junit:junit-bom", version = "5.13.4" }
 keycloak-admin-client = { module = "org.keycloak:keycloak-admin-client", version = "26.0.6" }
+jcstress-core = { module = "org.openjdk.jcstress:jcstress-core", version = "0.16" }
+jmh-core = { module = "org.openjdk.jmh:jmh-core", version.ref = "jmh" }
+jmh-generator-annprocess = { module = "org.openjdk.jmh:jmh-generator-annprocess", version.ref = "jmh" }
 logback-classic = { module = "ch.qos.logback:logback-classic", version = "1.5.18" }
 micrometer-bom = { module = "io.micrometer:micrometer-bom", version = "1.15.3" }
 microprofile-fault-tolerance-api = { module = "org.eclipse.microprofile.fault-tolerance:microprofile-fault-tolerance-api", version = "4.1.2" }
@@ -102,6 +106,8 @@ testcontainers-keycloak = { module = "com.github.dasniko:testcontainers-keycloak
 threeten-extra = { module = "org.threeten:threeten-extra", version = "1.8.0" }
 
 [plugins]
+jcstress = { id = "io.github.reyerizo.gradle.jcstress", version = "0.8.15" }
+jmh = { id = "me.champeau.jmh", version = "0.7.3" }
 openapi-generator = { id = "org.openapi.generator", version = "7.12.0" }
 quarkus = { id = "io.quarkus", version.ref = "quarkus" }
 rat = { id = "org.nosphere.apache.rat", version = "0.8.1" }

gradle/projects.main.properties

@@ -48,3 +48,9 @@ polaris-extensions-federation-hive=extensions/federation/hive
 polaris-config-docs-annotations=tools/config-docs/annotations
 polaris-config-docs-generator=tools/config-docs/generator
 polaris-config-docs-site=tools/config-docs/site
+
+# id generation
+polaris-idgen-api=persistence/nosql/idgen/api
+polaris-idgen-impl=persistence/nosql/idgen/impl
+polaris-idgen-mocks=persistence/nosql/idgen/mocks
+polaris-idgen-spi=persistence/nosql/idgen/spi

persistence/nosql/idgen/README.md

@@ -0,0 +1,55 @@
+<!--
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+
+# Unique ID generation framework and monotonic clock
+
+Provides a framework and implementations for unique ID generation, including a monotonically increasing timestamp/clock
+source.
+
+Provides a
+[Snowflake-IDs](https://medium.com/@jitenderkmr/demystifying-snowflake-ids-a-unique-identifier-in-distributed-computing-72796a827c9d)
+implementation.
+
+Consuming production should primarily leverage the `IdGenerator` and `MonotonicClock` interfaces.
+
+## Snowflake ID source
+
+The Snowflake ID source is configurable for each backend instance, but cannot be modified for an existing backend
+instance to prevent ID conflicts.
+
+The epoch of these timestamps is 2025-03-01-00:00:00.0 GMT. Timestamps occupy 41 bits at
+millisecond precision, which lasts for about 69 years. Node-IDs are 10 bits, which allows 1024 concurrently active
+"JVMs running Polaris". 12 bits are used by the sequence number, which then allows each node to generate 4096 IDs per
+millisecond. One bit is reserved for future use.
+
+Node IDs are leased by every "JVM running Polaris" for a period of time. The ID generator implementation guarantees
+that no IDs will be generated for a timestamp that exceeds the "lease time". Leases can be extended. The implementation
+leverages atomic database operations (CAS) for the lease implementation.
+
+ID generators must not use timestamps before or after the lease period nor must they re-use an older timestamp. This
+requirement is satisfied using a monotonic clock implementation.
+
+## Code structure
+
+The code is structured into multiple modules. Consuming code should almost always pull in only the API module.
+
+* `polaris-idgen-api` provides the necessary Java interfaces and immutable types.
+* `polaris-idgen-impl` provides the storage agnostic implementation.
+* `polaris-idgen-mocks` provides mocks for testing.
+* `polaris-idgen-spi` provides the necessary interfaces to construct ID generators.

persistence/nosql/idgen/api/build.gradle.kts

@@ -0,0 +1,42 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+plugins {
+  id("org.kordamp.gradle.jandex")
+  id("polaris-server")
+}
+
+description = "Polaris ID generation API"
+
+dependencies {
+  compileOnly(libs.jakarta.annotation.api)
+  compileOnly(libs.jakarta.validation.api)
+  compileOnly(libs.jakarta.inject.api)
+  compileOnly(libs.jakarta.enterprise.cdi.api)
+
+  compileOnly(libs.smallrye.config.core)
+  compileOnly(platform(libs.quarkus.bom))
+  compileOnly("io.quarkus:quarkus-core")
+
+  compileOnly(project(":polaris-immutables"))
+  annotationProcessor(project(":polaris-immutables", configuration = "processor"))
+
+  implementation(platform(libs.jackson.bom))
+  implementation("com.fasterxml.jackson.core:jackson-databind")
+}

persistence/nosql/idgen/api/src/main/java/org/apache/polaris/ids/api/IdGenerator.java

@@ -0,0 +1,45 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.polaris.ids.api;
+
+/** The primary interface for generating a contention-free ID. */
+public interface IdGenerator {
+  /** Generate a new, unique ID. */
+  long generateId();
+
+  /** Generate the system ID for a node, solely used for node management. */
+  long systemIdForNode(int nodeId);
+
+  default String describeId(long id) {
+    return Long.toString(id);
+  }
+
+  IdGenerator NONE =
+      new IdGenerator() {
+        @Override
+        public long generateId() {
+          throw new UnsupportedOperationException("NONE IdGenerator cannot generate IDs.");
+        }
+
+        @Override
+        public long systemIdForNode(int nodeId) {
+          throw new UnsupportedOperationException("NONE IdGenerator cannot generate IDs.");
+        }
+      };
+}

persistence/nosql/idgen/api/src/main/java/org/apache/polaris/ids/api/IdGeneratorSpec.java

@@ -0,0 +1,52 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.polaris.ids.api;
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+import com.fasterxml.jackson.databind.annotation.JsonSerialize;
+import io.smallrye.config.WithDefault;
+import java.util.Map;
+import org.apache.polaris.immutables.PolarisImmutable;
+import org.immutables.value.Value;
+
+@PolarisImmutable
+@JsonSerialize(as = ImmutableIdGeneratorSpec.class)
+@JsonDeserialize(as = ImmutableIdGeneratorSpec.class)
+public interface IdGeneratorSpec {
+  @WithDefault("snowflake")
+  String type();
+
+  Map<String, String> params();
+
+  @PolarisImmutable
+  interface BuildableIdGeneratorSpec extends IdGeneratorSpec {
+    static ImmutableBuildableIdGeneratorSpec.Builder builder() {
+      return ImmutableBuildableIdGeneratorSpec.builder();
+    }
+
+    @Override
+    Map<String, String> params();
+
+    @Override
+    @Value.Default
+    default String type() {
+      return "snowflake";
+    }
+  }
+}

persistence/nosql/idgen/api/src/main/java/org/apache/polaris/ids/api/MonotonicClock.java

@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.polaris.ids.api;
+
+import java.time.Instant;
+
+/**
+ * Provides a clock providing the current time in milliseconds, microseconds and instant since
+ * 1970-01-01-00:00:00.000. The returned timestamp values increase monotonically.
+ *
+ * <p>The functions provide nanosecond/microsecond/millisecond precision, but not necessarily the
+ * same resolution (how frequently the value changes) - no guarantees are made.
+ *
+ * <p>Implementation <em>may</em> adjust to wall clocks advancing faster than the real time. If and
+ * how exactly depends on the implementation, as long as none of the time values available via this
+ * interface "goes backwards".
+ *
+ * <p>Implementer notes: {@link System#nanoTime() System.nanoTime()} does not guarantee that the
+ * values will be monotonically increasing when invocations happen from different
+ * CPUs/cores/threads.
+ *
+ * <p>A default implementation of {@link MonotonicClock} can be injected as an application scoped
+ * bean in CDI.
+ */
+public interface MonotonicClock extends AutoCloseable {
+  /**
+   * Current timestamp as microseconds since epoch, can be used as a monotonically increasing wall
+   * clock.
+   */
+  long currentTimeMicros();
+
+  /**
+   * Current timestamp as milliseconds since epoch, can be used as a monotonically increasing wall
+   * clock.
+   */
+  long currentTimeMillis();
+
+  /**
+   * Current instant with nanosecond precision, can be used as a monotonically increasing wall
+   * clock.
+   */
+  Instant currentInstant();
+
+  /** Monotonically increasing timestamp with nanosecond precision, not related to wall clock. */
+  long nanoTime();
+
+  void sleepMillis(long millis);
+
+  @Override
+  void close();
+
+  void waitUntilTimeMillisAdvanced();
+}

persistence/nosql/idgen/api/src/main/java/org/apache/polaris/ids/api/SnowflakeIdGenerator.java

@@ -0,0 +1,60 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.polaris.ids.api;
+
+import jakarta.annotation.Nonnull;
+import java.time.Instant;
+import java.util.UUID;
+
+public interface SnowflakeIdGenerator extends IdGenerator {
+  /** Offset of the snowflake ID generator since the 1970-01-01T00:00:00Z epoch instant. */
+  Instant ID_EPOCH = Instant.parse("2025-03-01T00:00:00Z");
+
+  /**
+   * Offset of the snowflake ID generator in milliseconds since the 1970-01-01T00:00:00Z epoch
+   * instant.
+   */
+  long ID_EPOCH_MILLIS = ID_EPOCH.toEpochMilli();
+
+  int DEFAULT_NODE_ID_BITS = 10;
+  int DEFAULT_TIMESTAMP_BITS = 41;
+  int DEFAULT_SEQUENCE_BITS = 12;
+
+  long constructId(long timestamp, long sequence, long node);
+
+  long timestampFromId(long id);
+
+  long timestampUtcFromId(long id);
+
+  long sequenceFromId(long id);
+
+  long nodeFromId(long id);
+
+  UUID idToTimeUuid(long id);
+
+  String idToString(long id);
+
+  long timeUuidToId(@Nonnull UUID uuid);
+
+  int timestampBits();
+
+  int sequenceBits();
+
+  int nodeIdBits();
+}