DRAFT: Implement unified blob cache plugin SPI

.github/workflows/ci.yml

@@ -362,7 +362,8 @@ jobs:
             !:trino-faulttolerant-tests,
             !:trino-filesystem,
             !:trino-filesystem-alluxio,
-            !:trino-filesystem-cache-alluxio,
+            !:trino-blob-cache-alluxio,
+            !:trino-blob-cache-memory,
             !:trino-filesystem-azure,
             !:trino-filesystem-gcs,
             !:trino-filesystem-manager,
@@ -466,12 +467,13 @@ jobs:
                 - lib/trino-filesystem
                 - lib/trino-filesystem-azure
                 - lib/trino-filesystem-alluxio
-                - lib/trino-filesystem-cache-alluxio
                 - lib/trino-filesystem-gcs
                 - lib/trino-filesystem-manager
                 - lib/trino-filesystem-s3
                 - lib/trino-hdfs
                 - lib/trino-hive-formats
+                - plugin/trino-blob-cache-alluxio
+                - plugin/trino-blob-cache-memory
             - { modules: core/trino-main }
             - { modules: lib/trino-filesystem-azure, profile: cloud-tests }
             - { modules: lib/trino-filesystem-gcs, profile: cloud-tests }

core/docker/default/etc/cache-manager-memory.properties

@@ -0,0 +1,3 @@
+cache-manager.name=memory
+fs.memory-cache.max-size=2GB
+fs.memory-cache.ttl=24h

core/docker/default/etc/config.properties

@@ -4,3 +4,4 @@ node-scheduler.include-coordinator=true
 http-server.http.port=8080
 discovery.uri=http://localhost:8080
 catalog.management=${ENV:CATALOG_MANAGEMENT}
+cache-manager.config-files=etc/cache-manager-memory.properties

core/trino-main/src/main/java/io/trino/cache/CacheManagerConfig.java

@@ -0,0 +1,45 @@
+/*
+ * Licensed 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 io.trino.cache;
+
+import com.google.common.collect.ImmutableList;
+import io.airlift.configuration.Config;
+import io.airlift.configuration.validation.FileExists;
+
+import java.io.File;
+import java.util.List;
+import java.util.stream.Stream;
+
+import static com.google.common.collect.ImmutableList.toImmutableList;
+
+public class CacheManagerConfig
+{
+    private List<File> cacheManagerConfigFiles = ImmutableList.of();
+
+    public List<@FileExists File> getCacheManagerConfigFiles()
+    {
+        return cacheManagerConfigFiles;
+    }
+
+    @Config("cache-manager.config-files")
+    public CacheManagerConfig setCacheManagerConfigFiles(String cacheManagerConfigFiles)
+    {
+        this.cacheManagerConfigFiles = Stream.of(cacheManagerConfigFiles.split(","))
+                .map(String::trim)
+                .filter(s -> !s.isEmpty())
+                .map(File::new)
+                .collect(toImmutableList());
+        return this;
+    }
+}

core/trino-main/src/main/java/io/trino/cache/CacheManagerContextInstance.java

@@ -0,0 +1,45 @@
+/*
+ * Licensed 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 io.trino.cache;
+
+import io.opentelemetry.api.OpenTelemetry;
+import io.opentelemetry.api.trace.Tracer;
+import io.trino.spi.cache.CacheManagerContext;
+
+import static java.util.Objects.requireNonNull;
+
+public class CacheManagerContextInstance
+        implements CacheManagerContext
+{
+    private final OpenTelemetry openTelemetry;
+    private final Tracer tracer;
+
+    public CacheManagerContextInstance(OpenTelemetry openTelemetry, Tracer tracer)
+    {
+        this.openTelemetry = requireNonNull(openTelemetry, "openTelemetry is null");
+        this.tracer = requireNonNull(tracer, "tracer is null");
+    }
+
+    @Override
+    public OpenTelemetry getOpenTelemetry()
+    {
+        return openTelemetry;
+    }
+
+    @Override
+    public Tracer getTracer()
+    {
+        return tracer;
+    }
+}

core/trino-main/src/main/java/io/trino/cache/CacheManagerModule.java

@@ -0,0 +1,31 @@
+/*
+ * Licensed 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 io.trino.cache;
+
+import com.google.inject.Binder;
+import com.google.inject.Module;
+import com.google.inject.Scopes;
+
+import static io.airlift.configuration.ConfigBinder.configBinder;
+
+public class CacheManagerModule
+        implements Module
+{
+    @Override
+    public void configure(Binder binder)
+    {
+        configBinder(binder).bindConfig(CacheManagerConfig.class);
+        binder.bind(CacheManagerRegistry.class).in(Scopes.SINGLETON);
+    }
+}

core/trino-main/src/main/java/io/trino/cache/CacheManagerRegistry.java

@@ -0,0 +1,175 @@
+/*
+ * Licensed 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 io.trino.cache;
+
+import com.google.inject.Inject;
+import io.airlift.configuration.secrets.SecretsResolver;
+import io.airlift.log.Logger;
+import io.opentelemetry.api.OpenTelemetry;
+import io.opentelemetry.api.trace.Tracer;
+import io.trino.spi.cache.Blob;
+import io.trino.spi.cache.BlobCache;
+import io.trino.spi.cache.BlobCacheManager;
+import io.trino.spi.cache.BlobCacheManagerFactory;
+import io.trino.spi.cache.BlobSource;
+import io.trino.spi.cache.CacheKey;
+import io.trino.spi.cache.CacheTier;
+import io.trino.spi.cache.ConnectorCacheFactory;
+import io.trino.spi.cache.PassThroughBlob;
+import io.trino.spi.catalog.CatalogName;
+import io.trino.spi.classloader.ThreadContextClassLoader;
+import jakarta.annotation.PreDestroy;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Strings.isNullOrEmpty;
+import static io.airlift.configuration.ConfigurationLoader.loadPropertiesFrom;
+import static java.lang.String.format;
+import static java.util.Objects.requireNonNull;
+
+public class CacheManagerRegistry
+{
+    private static final Logger log = Logger.get(CacheManagerRegistry.class);
+
+    private static final String CACHE_MANAGER_NAME_PROPERTY = "cache-manager.name";
+
+    private final OpenTelemetry openTelemetry;
+    private final Tracer tracer;
+    private final SecretsResolver secretsResolver;
+    private final List<File> configFiles;
+
+    private final Map<String, BlobCacheManagerFactory> blobCacheFactories = new ConcurrentHashMap<>();
+    private final Map<CacheTier, BlobCacheManager> blobCacheManagers = new ConcurrentHashMap<>();
+
+    @Inject
+    public CacheManagerRegistry(
+            OpenTelemetry openTelemetry,
+            Tracer tracer,
+            SecretsResolver secretsResolver,
+            CacheManagerConfig config)
+    {
+        this.openTelemetry = requireNonNull(openTelemetry, "openTelemetry is null");
+        this.tracer = requireNonNull(tracer, "tracer is null");
+        this.secretsResolver = requireNonNull(secretsResolver, "secretsResolver is null");
+        this.configFiles = List.copyOf(config.getCacheManagerConfigFiles());
+    }
+
+    public void addBlobCacheManagerFactory(BlobCacheManagerFactory factory)
+    {
+        requireNonNull(factory, "factory is null");
+        if (blobCacheFactories.putIfAbsent(factory.getName(), factory) != null) {
+            throw new IllegalArgumentException(format("Blob cache manager factory '%s' is already registered", factory.getName()));
+        }
+    }
+
+    public synchronized void loadCacheManagers()
+    {
+        for (File configFile : configFiles) {
+            Map<String, String> properties = loadProperties(configFile);
+            String name = properties.remove(CACHE_MANAGER_NAME_PROPERTY);
+            checkArgument(!isNullOrEmpty(name), "Cache manager configuration %s does not contain %s", configFile, CACHE_MANAGER_NAME_PROPERTY);
+            loadBlobCacheManager(name, properties);
+        }
+    }
+
+    public synchronized void loadBlobCacheManager(String name, Map<String, String> properties)
+    {
+        log.info("-- Loading blob cache manager %s --", name);
+
+        BlobCacheManagerFactory factory = blobCacheFactories.get(name);
+        checkArgument(factory != null, "Blob cache manager factory '%s' is not registered. Available factories: %s", name, blobCacheFactories.keySet());
+
+        CacheTier tier = factory.cacheTier();
+        if (blobCacheManagers.containsKey(tier)) {
+            throw new IllegalStateException(format("Blob cache manager for tier %s is already loaded", tier));
+        }
+
+        BlobCacheManager manager;
+        try (ThreadContextClassLoader _ = new ThreadContextClassLoader(factory.getClass().getClassLoader())) {
+            manager = factory.create(secretsResolver.getResolvedConfiguration(properties), new CacheManagerContextInstance(openTelemetry, tracer));
+        }
+
+        blobCacheManagers.put(tier, manager);
+        log.info("-- Loaded blob cache manager %s for tier %s --", name, tier);
+    }
+
+    public ConnectorCacheFactory createConnectorCacheFactory(CatalogName catalog)
+    {
+        requireNonNull(catalog, "catalog is null");
+        return tier -> {
+            BlobCacheManager manager = blobCacheManagers.get(tier);
+            if (manager == null) {
+                log.warn("Catalog %s requested blob cache manager tier %s but none registered, using noop", catalog, tier);
+                return new NoopBlobCache();
+            }
+            log.debug("Created new blob cache on tier %s for catalog %s", tier, catalog);
+            return manager.createBlobCache(catalog);
+        };
+    }
+
+    public void drop(CatalogName catalog)
+    {
+        for (Map.Entry<CacheTier, BlobCacheManager> entry : blobCacheManagers.entrySet()) {
+            log.info("Dropping blob cache on tier %s for catalog %s", entry.getKey(), catalog);
+            entry.getValue().drop(catalog);
+        }
+    }
+
+    @PreDestroy
+    public void shutdown()
+    {
+        for (Map.Entry<CacheTier, BlobCacheManager> entry : blobCacheManagers.entrySet()) {
+            try {
+                entry.getValue().shutdown();
+            }
+            catch (Throwable t) {
+                log.error(t, "Error shutting down blob cache manager for tier %s", entry.getKey());
+            }
+        }
+    }
+
+    private static Map<String, String> loadProperties(File configFile)
+    {
+        try {
+            return new HashMap<>(loadPropertiesFrom(configFile.getPath()));
+        }
+        catch (IOException e) {
+            throw new UncheckedIOException("Failed to read configuration file: " + configFile, e);
+        }
+    }
+
+    private static class NoopBlobCache
+            implements BlobCache
+    {
+        @Override
+        public Blob get(CacheKey key, BlobSource source)
+        {
+            return new PassThroughBlob(source);
+        }
+
+        @Override
+        public void invalidate(CacheKey key) {}
+
+        @Override
+        public void invalidate(Collection<CacheKey> keys) {}
+    }
+}

core/trino-main/src/main/java/io/trino/connector/ConnectorContextInstance.java

@@ -19,6 +19,7 @@
 import io.trino.spi.PageIndexerFactory;
 import io.trino.spi.PageSorter;
 import io.trino.spi.VersionEmbedder;
+import io.trino.spi.cache.ConnectorCacheFactory;
 import io.trino.spi.connector.ConnectorContext;
 import io.trino.spi.connector.MetadataProvider;
 import io.trino.spi.function.FunctionBundleFactory;
@@ -38,6 +39,7 @@ public class ConnectorContextInstance
     private final PageSorter pageSorter;
     private final PageIndexerFactory pageIndexerFactory;
     private final FunctionBundleFactory functionBundleFactory;
+    private final ConnectorCacheFactory cacheFactory;
 
     public ConnectorContextInstance(
             OpenTelemetry openTelemetry,
@@ -48,7 +50,8 @@ public ConnectorContextInstance(
             MetadataProvider metadataProvider,
             PageSorter pageSorter,
             PageIndexerFactory pageIndexerFactory,
-            FunctionBundleFactory functionBundleFactory)
+            FunctionBundleFactory functionBundleFactory,
+            ConnectorCacheFactory cacheFactory)
     {
         this.openTelemetry = requireNonNull(openTelemetry, "openTelemetry is null");
         this.tracer = requireNonNull(tracer, "tracer is null");
@@ -59,6 +62,7 @@ public ConnectorContextInstance(
         this.pageSorter = requireNonNull(pageSorter, "pageSorter is null");
         this.pageIndexerFactory = requireNonNull(pageIndexerFactory, "pageIndexerFactory is null");
         this.functionBundleFactory = requireNonNull(functionBundleFactory, "functionBundleFactory is null");
+        this.cacheFactory = requireNonNull(cacheFactory, "cacheFactory is null");
     }
 
     @Override
@@ -114,4 +118,10 @@ public FunctionBundleFactory getFunctionBundleFactory()
     {
         return functionBundleFactory;
     }
+
+    @Override
+    public ConnectorCacheFactory getCacheFactory()
+    {
+        return cacheFactory;
+    }
 }