| /* |
| * 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.cassandra.schema; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.charset.CharacterCodingException; |
| import java.util.*; |
| import java.util.concurrent.TimeUnit; |
| import java.util.stream.Collectors; |
| |
| import javax.annotation.concurrent.NotThreadSafe; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.collect.*; |
| import com.google.common.collect.Maps; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.antlr.runtime.RecognitionException; |
| import org.apache.cassandra.config.*; |
| import org.apache.cassandra.cql3.*; |
| import org.apache.cassandra.cql3.functions.*; |
| import org.apache.cassandra.cql3.statements.schema.CreateTableStatement; |
| import org.apache.cassandra.db.*; |
| import org.apache.cassandra.db.filter.ColumnFilter; |
| import org.apache.cassandra.db.marshal.*; |
| import org.apache.cassandra.db.partitions.*; |
| import org.apache.cassandra.db.rows.*; |
| import org.apache.cassandra.exceptions.InvalidRequestException; |
| import org.apache.cassandra.service.reads.SpeculativeRetryPolicy; |
| import org.apache.cassandra.schema.ColumnMetadata.ClusteringOrder; |
| import org.apache.cassandra.schema.Keyspaces.KeyspacesDiff; |
| import org.apache.cassandra.service.reads.repair.ReadRepairStrategy; |
| import org.apache.cassandra.transport.ProtocolVersion; |
| import org.apache.cassandra.utils.ByteBufferUtil; |
| import org.apache.cassandra.utils.FBUtilities; |
| import org.apache.cassandra.utils.Simulate; |
| |
| import static java.lang.String.format; |
| |
| import static java.util.stream.Collectors.toList; |
| import static java.util.stream.Collectors.toSet; |
| |
| import static org.apache.cassandra.cql3.QueryProcessor.executeInternal; |
| import static org.apache.cassandra.cql3.QueryProcessor.executeOnceInternal; |
| import static org.apache.cassandra.schema.SchemaKeyspaceTables.*; |
| import static org.apache.cassandra.utils.Simulate.With.GLOBAL_CLOCK; |
| |
| /** |
| * system_schema.* tables and methods for manipulating them. |
| * |
| * Please notice this class is _not_ thread safe and all methods which reads or updates the data in schema keyspace |
| * should be accessed only from the implementation of {@link SchemaUpdateHandler} in synchronized blocks. |
| */ |
| @NotThreadSafe |
| public final class SchemaKeyspace |
| { |
| private SchemaKeyspace() |
| { |
| } |
| |
| private static final Logger logger = LoggerFactory.getLogger(SchemaKeyspace.class); |
| |
| private static final boolean FLUSH_SCHEMA_TABLES = CassandraRelevantProperties.FLUSH_LOCAL_SCHEMA_CHANGES.getBoolean(); |
| private static final boolean IGNORE_CORRUPTED_SCHEMA_TABLES = Boolean.parseBoolean(System.getProperty("cassandra.ignore_corrupted_schema_tables", "false")); |
| |
| /** |
| * The tables to which we added the cdc column. This is used in {@link #makeUpdateForSchema} below to make sure we skip that |
| * column is cdc is disabled as the columns breaks pre-cdc to post-cdc upgrades (typically, 3.0 -> 3.X). |
| */ |
| private static final Set<String> TABLES_WITH_CDC_ADDED = ImmutableSet.of(SchemaKeyspaceTables.TABLES, SchemaKeyspaceTables.VIEWS); |
| |
| private static final TableMetadata Keyspaces = |
| parse(KEYSPACES, |
| "keyspace definitions", |
| "CREATE TABLE %s (" |
| + "keyspace_name text," |
| + "durable_writes boolean," |
| + "replication frozen<map<text, text>>," |
| + "PRIMARY KEY ((keyspace_name)))"); |
| |
| private static final TableMetadata Tables = |
| parse(TABLES, |
| "table definitions", |
| "CREATE TABLE %s (" |
| + "keyspace_name text," |
| + "table_name text," |
| + "bloom_filter_fp_chance double," |
| + "caching frozen<map<text, text>>," |
| + "comment text," |
| + "compaction frozen<map<text, text>>," |
| + "compression frozen<map<text, text>>," |
| + "memtable text," |
| + "crc_check_chance double," |
| + "dclocal_read_repair_chance double," // no longer used, left for drivers' sake |
| + "default_time_to_live int," |
| + "extensions frozen<map<text, blob>>," |
| + "flags frozen<set<text>>," // SUPER, COUNTER, DENSE, COMPOUND |
| + "gc_grace_seconds int," |
| + "id uuid," |
| + "max_index_interval int," |
| + "memtable_flush_period_in_ms int," |
| + "min_index_interval int," |
| + "read_repair_chance double," // no longer used, left for drivers' sake |
| + "speculative_retry text," |
| + "additional_write_policy text," |
| + "cdc boolean," |
| + "read_repair text," |
| + "PRIMARY KEY ((keyspace_name), table_name))"); |
| |
| private static final TableMetadata Columns = |
| parse(COLUMNS, |
| "column definitions", |
| "CREATE TABLE %s (" |
| + "keyspace_name text," |
| + "table_name text," |
| + "column_name text," |
| + "clustering_order text," |
| + "column_name_bytes blob," |
| + "kind text," |
| + "position int," |
| + "type text," |
| + "PRIMARY KEY ((keyspace_name), table_name, column_name))"); |
| |
| private static final TableMetadata DroppedColumns = |
| parse(DROPPED_COLUMNS, |
| "dropped column registry", |
| "CREATE TABLE %s (" |
| + "keyspace_name text," |
| + "table_name text," |
| + "column_name text," |
| + "dropped_time timestamp," |
| + "kind text," |
| + "type text," |
| + "PRIMARY KEY ((keyspace_name), table_name, column_name))"); |
| |
| private static final TableMetadata Triggers = |
| parse(TRIGGERS, |
| "trigger definitions", |
| "CREATE TABLE %s (" |
| + "keyspace_name text," |
| + "table_name text," |
| + "trigger_name text," |
| + "options frozen<map<text, text>>," |
| + "PRIMARY KEY ((keyspace_name), table_name, trigger_name))"); |
| |
| private static final TableMetadata Views = |
| parse(VIEWS, |
| "view definitions", |
| "CREATE TABLE %s (" |
| + "keyspace_name text," |
| + "view_name text," |
| + "base_table_id uuid," |
| + "base_table_name text," |
| + "where_clause text," |
| + "bloom_filter_fp_chance double," |
| + "caching frozen<map<text, text>>," |
| + "comment text," |
| + "compaction frozen<map<text, text>>," |
| + "compression frozen<map<text, text>>," |
| + "memtable text," |
| + "crc_check_chance double," |
| + "dclocal_read_repair_chance double," // no longer used, left for drivers' sake |
| + "default_time_to_live int," |
| + "extensions frozen<map<text, blob>>," |
| + "gc_grace_seconds int," |
| + "id uuid," |
| + "include_all_columns boolean," |
| + "max_index_interval int," |
| + "memtable_flush_period_in_ms int," |
| + "min_index_interval int," |
| + "read_repair_chance double," // no longer used, left for drivers' sake |
| + "speculative_retry text," |
| + "additional_write_policy text," |
| + "cdc boolean," |
| + "read_repair text," |
| + "PRIMARY KEY ((keyspace_name), view_name))"); |
| |
| private static final TableMetadata Indexes = |
| parse(INDEXES, |
| "secondary index definitions", |
| "CREATE TABLE %s (" |
| + "keyspace_name text," |
| + "table_name text," |
| + "index_name text," |
| + "kind text," |
| + "options frozen<map<text, text>>," |
| + "PRIMARY KEY ((keyspace_name), table_name, index_name))"); |
| |
| private static final TableMetadata Types = |
| parse(TYPES, |
| "user defined type definitions", |
| "CREATE TABLE %s (" |
| + "keyspace_name text," |
| + "type_name text," |
| + "field_names frozen<list<text>>," |
| + "field_types frozen<list<text>>," |
| + "PRIMARY KEY ((keyspace_name), type_name))"); |
| |
| private static final TableMetadata Functions = |
| parse(FUNCTIONS, |
| "user defined function definitions", |
| "CREATE TABLE %s (" |
| + "keyspace_name text," |
| + "function_name text," |
| + "argument_types frozen<list<text>>," |
| + "argument_names frozen<list<text>>," |
| + "body text," |
| + "language text," |
| + "return_type text," |
| + "called_on_null_input boolean," |
| + "PRIMARY KEY ((keyspace_name), function_name, argument_types))"); |
| |
| private static final TableMetadata Aggregates = |
| parse(AGGREGATES, |
| "user defined aggregate definitions", |
| "CREATE TABLE %s (" |
| + "keyspace_name text," |
| + "aggregate_name text," |
| + "argument_types frozen<list<text>>," |
| + "final_func text," |
| + "initcond text," |
| + "return_type text," |
| + "state_func text," |
| + "state_type text," |
| + "PRIMARY KEY ((keyspace_name), aggregate_name, argument_types))"); |
| |
| private static final List<TableMetadata> ALL_TABLE_METADATA = |
| ImmutableList.of(Keyspaces, Tables, Columns, Triggers, DroppedColumns, Views, Types, Functions, Aggregates, Indexes); |
| |
| private static TableMetadata parse(String name, String description, String cql) |
| { |
| return CreateTableStatement.parse(format(cql, name), SchemaConstants.SCHEMA_KEYSPACE_NAME) |
| .id(TableId.forSystemTable(SchemaConstants.SCHEMA_KEYSPACE_NAME, name)) |
| .gcGraceSeconds((int) TimeUnit.DAYS.toSeconds(7)) |
| .memtableFlushPeriod((int) TimeUnit.HOURS.toMillis(1)) |
| .comment(description) |
| .build(); |
| } |
| |
| public static KeyspaceMetadata metadata() |
| { |
| return KeyspaceMetadata.create(SchemaConstants.SCHEMA_KEYSPACE_NAME, KeyspaceParams.local(), org.apache.cassandra.schema.Tables.of(ALL_TABLE_METADATA)); |
| } |
| |
| static Collection<Mutation> convertSchemaDiffToMutations(KeyspacesDiff diff, long timestamp) |
| { |
| Map<String, Mutation> mutations = new HashMap<>(); |
| |
| diff.dropped.forEach(k -> mutations.put(k.name, makeDropKeyspaceMutation(k, timestamp).build())); |
| diff.created.forEach(k -> mutations.put(k.name, makeCreateKeyspaceMutation(k, timestamp).build())); |
| diff.altered.forEach(kd -> |
| { |
| KeyspaceMetadata ks = kd.after; |
| |
| Mutation.SimpleBuilder builder = makeCreateKeyspaceMutation(ks.name, ks.params, timestamp); |
| |
| kd.types.dropped.forEach(t -> addDropTypeToSchemaMutation(t, builder)); |
| kd.types.created.forEach(t -> addTypeToSchemaMutation(t, builder)); |
| kd.types.altered(Difference.SHALLOW).forEach(td -> addTypeToSchemaMutation(td.after, builder)); |
| |
| kd.tables.dropped.forEach(t -> addDropTableToSchemaMutation(t, builder)); |
| kd.tables.created.forEach(t -> addTableToSchemaMutation(t, true, builder)); |
| kd.tables.altered(Difference.SHALLOW).forEach(td -> addAlterTableToSchemaMutation(td.before, td.after, builder)); |
| |
| kd.views.dropped.forEach(v -> addDropViewToSchemaMutation(v, builder)); |
| kd.views.created.forEach(v -> addViewToSchemaMutation(v, true, builder)); |
| kd.views.altered(Difference.SHALLOW).forEach(vd -> addAlterViewToSchemaMutation(vd.before, vd.after, builder)); |
| |
| kd.udfs.dropped.forEach(f -> addDropFunctionToSchemaMutation((UDFunction) f, builder)); |
| kd.udfs.created.forEach(f -> addFunctionToSchemaMutation((UDFunction) f, builder)); |
| kd.udfs.altered(Difference.SHALLOW).forEach(fd -> addFunctionToSchemaMutation(fd.after, builder)); |
| |
| kd.udas.dropped.forEach(a -> addDropAggregateToSchemaMutation((UDAggregate) a, builder)); |
| kd.udas.created.forEach(a -> addAggregateToSchemaMutation((UDAggregate) a, builder)); |
| kd.udas.altered(Difference.SHALLOW).forEach(ad -> addAggregateToSchemaMutation(ad.after, builder)); |
| |
| mutations.put(ks.name, builder.build()); |
| }); |
| |
| return mutations.values(); |
| } |
| |
| /** |
| * Add entries to system_schema.* for the hardcoded system keyspaces |
| */ |
| @Simulate(with = GLOBAL_CLOCK) |
| static void saveSystemKeyspacesSchema() |
| { |
| KeyspaceMetadata system = Schema.instance.getKeyspaceMetadata(SchemaConstants.SYSTEM_KEYSPACE_NAME); |
| KeyspaceMetadata schema = Schema.instance.getKeyspaceMetadata(SchemaConstants.SCHEMA_KEYSPACE_NAME); |
| |
| long timestamp = FBUtilities.timestampMicros(); |
| |
| // delete old, possibly obsolete entries in schema tables |
| for (String schemaTable : ALL) |
| { |
| String query = String.format("DELETE FROM %s.%s USING TIMESTAMP ? WHERE keyspace_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, schemaTable); |
| for (String systemKeyspace : SchemaConstants.LOCAL_SYSTEM_KEYSPACE_NAMES) |
| executeOnceInternal(query, timestamp, systemKeyspace); |
| } |
| |
| // (+1 to timestamp to make sure we don't get shadowed by the tombstones we just added) |
| makeCreateKeyspaceMutation(system, timestamp + 1).build().apply(); |
| makeCreateKeyspaceMutation(schema, timestamp + 1).build().apply(); |
| } |
| |
| static void truncate() |
| { |
| logger.debug("Truncating schema tables..."); |
| ALL.reverse().forEach(table -> getSchemaCFS(table).truncateBlocking()); |
| } |
| |
| private static void flush() |
| { |
| if (!DatabaseDescriptor.isUnsafeSystem()) |
| ALL.forEach(table -> FBUtilities.waitOnFuture(getSchemaCFS(table).forceFlush(ColumnFamilyStore.FlushReason.INTERNALLY_FORCED))); |
| } |
| |
| /** |
| * Read schema from system keyspace and calculate MD5 digest of every row, resulting digest |
| * will be converted into UUID which would act as content-based version of the schema. |
| */ |
| public static UUID calculateSchemaDigest() |
| { |
| Digest digest = Digest.forSchema(); |
| for (String table : ALL) |
| { |
| ReadCommand cmd = getReadCommandForTableSchema(table); |
| try (ReadExecutionController executionController = cmd.executionController(); |
| PartitionIterator schema = cmd.executeInternal(executionController)) |
| { |
| while (schema.hasNext()) |
| { |
| try (RowIterator partition = schema.next()) |
| { |
| if (!isSystemKeyspaceSchemaPartition(partition.partitionKey())) |
| RowIterators.digest(partition, digest); |
| } |
| } |
| } |
| } |
| return UUID.nameUUIDFromBytes(digest.digest()); |
| } |
| |
| /** |
| * @param schemaTableName The name of the table responsible for part of the schema |
| * @return CFS responsible to hold low-level serialized schema |
| */ |
| private static ColumnFamilyStore getSchemaCFS(String schemaTableName) |
| { |
| return Keyspace.open(SchemaConstants.SCHEMA_KEYSPACE_NAME).getColumnFamilyStore(schemaTableName); |
| } |
| |
| /** |
| * @param schemaTableName The name of the table responsible for part of the schema. |
| * @return low-level schema representation |
| */ |
| private static ReadCommand getReadCommandForTableSchema(String schemaTableName) |
| { |
| ColumnFamilyStore cfs = getSchemaCFS(schemaTableName); |
| return PartitionRangeReadCommand.allDataRead(cfs.metadata(), FBUtilities.nowInSeconds()); |
| } |
| |
| static Collection<Mutation> convertSchemaToMutations() |
| { |
| Map<DecoratedKey, Mutation.PartitionUpdateCollector> mutationMap = new HashMap<>(); |
| |
| for (String table : ALL) |
| convertSchemaToMutations(mutationMap, table); |
| |
| return mutationMap.values().stream().map(Mutation.PartitionUpdateCollector::build).collect(Collectors.toList()); |
| } |
| |
| private static void convertSchemaToMutations(Map<DecoratedKey, Mutation.PartitionUpdateCollector> mutationMap, String schemaTableName) |
| { |
| ReadCommand cmd = getReadCommandForTableSchema(schemaTableName); |
| try (ReadExecutionController executionController = cmd.executionController(); |
| UnfilteredPartitionIterator iter = cmd.executeLocally(executionController)) |
| { |
| while (iter.hasNext()) |
| { |
| try (UnfilteredRowIterator partition = iter.next()) |
| { |
| if (isSystemKeyspaceSchemaPartition(partition.partitionKey())) |
| continue; |
| |
| DecoratedKey key = partition.partitionKey(); |
| Mutation.PartitionUpdateCollector puCollector = mutationMap.computeIfAbsent(key, k -> new Mutation.PartitionUpdateCollector(SchemaConstants.SCHEMA_KEYSPACE_NAME, key)); |
| puCollector.add(makeUpdateForSchema(partition, cmd.columnFilter()).withOnlyPresentColumns()); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Creates a PartitionUpdate from a partition containing some schema table content. |
| * This is mainly calling {@code PartitionUpdate.fromIterator} except for the fact that it deals with |
| * the problem described in #12236. |
| */ |
| private static PartitionUpdate makeUpdateForSchema(UnfilteredRowIterator partition, ColumnFilter filter) |
| { |
| // This method is used during schema migration tasks, and if cdc is disabled, we want to force excluding the |
| // 'cdc' column from the TABLES/VIEWS schema table because it is problematic if received by older nodes (see #12236 |
| // and #12697). Otherwise though, we just simply "buffer" the content of the partition into a PartitionUpdate. |
| if (DatabaseDescriptor.isCDCEnabled() || !TABLES_WITH_CDC_ADDED.contains(partition.metadata().name)) |
| return PartitionUpdate.fromIterator(partition, filter); |
| |
| // We want to skip the 'cdc' column. A simple solution for that is based on the fact that |
| // 'PartitionUpdate.fromIterator()' will ignore any columns that are marked as 'fetched' but not 'queried'. |
| ColumnFilter.Builder builder = ColumnFilter.allRegularColumnsBuilder(partition.metadata(), false); |
| for (ColumnMetadata column : filter.fetchedColumns()) |
| { |
| if (!column.name.toString().equals("cdc")) |
| builder.add(column); |
| } |
| |
| return PartitionUpdate.fromIterator(partition, builder.build()); |
| } |
| |
| private static boolean isSystemKeyspaceSchemaPartition(DecoratedKey partitionKey) |
| { |
| return SchemaConstants.isLocalSystemKeyspace(UTF8Type.instance.compose(partitionKey.getKey())); |
| } |
| |
| /* |
| * Schema entities to mutations |
| */ |
| |
| @SuppressWarnings("unchecked") |
| private static DecoratedKey decorate(TableMetadata metadata, Object value) |
| { |
| return metadata.partitioner.decorateKey(metadata.partitionKeyType.decomposeUntyped(value)); |
| } |
| |
| private static Mutation.SimpleBuilder makeCreateKeyspaceMutation(String name, KeyspaceParams params, long timestamp) |
| { |
| Mutation.SimpleBuilder builder = Mutation.simpleBuilder(Keyspaces.keyspace, decorate(Keyspaces, name)) |
| .timestamp(timestamp); |
| |
| builder.update(Keyspaces) |
| .row() |
| .add(KeyspaceParams.Option.DURABLE_WRITES.toString(), params.durableWrites) |
| .add(KeyspaceParams.Option.REPLICATION.toString(), params.replication.asMap()); |
| |
| return builder; |
| } |
| |
| @VisibleForTesting |
| static Mutation.SimpleBuilder makeCreateKeyspaceMutation(KeyspaceMetadata keyspace, long timestamp) |
| { |
| Mutation.SimpleBuilder builder = makeCreateKeyspaceMutation(keyspace.name, keyspace.params, timestamp); |
| |
| keyspace.tables.forEach(table -> addTableToSchemaMutation(table, true, builder)); |
| keyspace.views.forEach(view -> addViewToSchemaMutation(view, true, builder)); |
| keyspace.types.forEach(type -> addTypeToSchemaMutation(type, builder)); |
| keyspace.functions.udfs().forEach(udf -> addFunctionToSchemaMutation(udf, builder)); |
| keyspace.functions.udas().forEach(uda -> addAggregateToSchemaMutation(uda, builder)); |
| |
| return builder; |
| } |
| |
| private static Mutation.SimpleBuilder makeDropKeyspaceMutation(KeyspaceMetadata keyspace, long timestamp) |
| { |
| Mutation.SimpleBuilder builder = Mutation.simpleBuilder(SchemaConstants.SCHEMA_KEYSPACE_NAME, decorate(Keyspaces, keyspace.name)) |
| .timestamp(timestamp); |
| |
| for (TableMetadata schemaTable : ALL_TABLE_METADATA) |
| builder.update(schemaTable).delete(); |
| |
| return builder; |
| } |
| |
| private static void addTypeToSchemaMutation(UserType type, Mutation.SimpleBuilder mutation) |
| { |
| mutation.update(Types) |
| .row(type.getNameAsString()) |
| .add("field_names", type.fieldNames().stream().map(FieldIdentifier::toString).collect(toList())) |
| .add("field_types", type.fieldTypes().stream().map(AbstractType::asCQL3Type).map(CQL3Type::toString).collect(toList())); |
| } |
| |
| private static void addDropTypeToSchemaMutation(UserType type, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Types).row(type.name).delete(); |
| } |
| |
| @VisibleForTesting |
| static Mutation.SimpleBuilder makeCreateTableMutation(KeyspaceMetadata keyspace, TableMetadata table, long timestamp) |
| { |
| // Include the serialized keyspace in case the target node missed a CREATE KEYSPACE migration (see CASSANDRA-5631). |
| Mutation.SimpleBuilder builder = makeCreateKeyspaceMutation(keyspace.name, keyspace.params, timestamp); |
| addTableToSchemaMutation(table, true, builder); |
| return builder; |
| } |
| |
| private static void addTableToSchemaMutation(TableMetadata table, boolean withColumnsAndTriggers, Mutation.SimpleBuilder builder) |
| { |
| Row.SimpleBuilder rowBuilder = builder.update(Tables) |
| .row(table.name) |
| .deletePrevious() |
| .add("id", table.id.asUUID()) |
| .add("flags", TableMetadata.Flag.toStringSet(table.flags)); |
| |
| addTableParamsToRowBuilder(table.params, rowBuilder); |
| |
| if (withColumnsAndTriggers) |
| { |
| for (ColumnMetadata column : table.columns()) |
| addColumnToSchemaMutation(table, column, builder); |
| |
| for (DroppedColumn column : table.droppedColumns.values()) |
| addDroppedColumnToSchemaMutation(table, column, builder); |
| |
| for (TriggerMetadata trigger : table.triggers) |
| addTriggerToSchemaMutation(table, trigger, builder); |
| |
| for (IndexMetadata index : table.indexes) |
| addIndexToSchemaMutation(table, index, builder); |
| } |
| } |
| |
| private static void addTableParamsToRowBuilder(TableParams params, Row.SimpleBuilder builder) |
| { |
| builder.add("bloom_filter_fp_chance", params.bloomFilterFpChance) |
| .add("comment", params.comment) |
| .add("dclocal_read_repair_chance", 0.0) // no longer used, left for drivers' sake |
| .add("default_time_to_live", params.defaultTimeToLive) |
| .add("gc_grace_seconds", params.gcGraceSeconds) |
| .add("max_index_interval", params.maxIndexInterval) |
| .add("memtable_flush_period_in_ms", params.memtableFlushPeriodInMs) |
| .add("min_index_interval", params.minIndexInterval) |
| .add("read_repair_chance", 0.0) // no longer used, left for drivers' sake |
| .add("speculative_retry", params.speculativeRetry.toString()) |
| .add("additional_write_policy", params.additionalWritePolicy.toString()) |
| .add("crc_check_chance", params.crcCheckChance) |
| .add("caching", params.caching.asMap()) |
| .add("compaction", params.compaction.asMap()) |
| .add("compression", params.compression.asMap()) |
| .add("read_repair", params.readRepair.toString()) |
| .add("extensions", params.extensions); |
| |
| // Only add CDC-enabled flag to schema if it's enabled on the node. This is to work around RTE's post-8099 if a 3.8+ |
| // node sends table schema to a < 3.8 versioned node with an unknown column. |
| if (DatabaseDescriptor.isCDCEnabled()) |
| builder.add("cdc", params.cdc); |
| |
| // As above, only add the memtable column if the table uses a non-default memtable configuration to avoid RTE |
| // in mixed operation with pre-4.1 versioned node during upgrades. |
| if (params.memtable != MemtableParams.DEFAULT) |
| builder.add("memtable", params.memtable.configurationKey()); |
| } |
| |
| private static void addAlterTableToSchemaMutation(TableMetadata oldTable, TableMetadata newTable, Mutation.SimpleBuilder builder) |
| { |
| addTableToSchemaMutation(newTable, false, builder); |
| |
| MapDifference<ByteBuffer, ColumnMetadata> columnDiff = Maps.difference(oldTable.columns, newTable.columns); |
| |
| // columns that are no longer needed |
| for (ColumnMetadata column : columnDiff.entriesOnlyOnLeft().values()) |
| dropColumnFromSchemaMutation(oldTable, column, builder); |
| |
| // newly added columns |
| for (ColumnMetadata column : columnDiff.entriesOnlyOnRight().values()) |
| addColumnToSchemaMutation(newTable, column, builder); |
| |
| // old columns with updated attributes |
| for (ByteBuffer name : columnDiff.entriesDiffering().keySet()) |
| addColumnToSchemaMutation(newTable, newTable.getColumn(name), builder); |
| |
| // dropped columns |
| MapDifference<ByteBuffer, DroppedColumn> droppedColumnDiff = |
| Maps.difference(oldTable.droppedColumns, newTable.droppedColumns); |
| |
| // newly dropped columns |
| for (DroppedColumn column : droppedColumnDiff.entriesOnlyOnRight().values()) |
| addDroppedColumnToSchemaMutation(newTable, column, builder); |
| |
| // columns added then dropped again |
| for (ByteBuffer name : droppedColumnDiff.entriesDiffering().keySet()) |
| addDroppedColumnToSchemaMutation(newTable, newTable.droppedColumns.get(name), builder); |
| |
| MapDifference<String, TriggerMetadata> triggerDiff = triggersDiff(oldTable.triggers, newTable.triggers); |
| |
| // dropped triggers |
| for (TriggerMetadata trigger : triggerDiff.entriesOnlyOnLeft().values()) |
| dropTriggerFromSchemaMutation(oldTable, trigger, builder); |
| |
| // newly created triggers |
| for (TriggerMetadata trigger : triggerDiff.entriesOnlyOnRight().values()) |
| addTriggerToSchemaMutation(newTable, trigger, builder); |
| |
| MapDifference<String, IndexMetadata> indexesDiff = indexesDiff(oldTable.indexes, newTable.indexes); |
| |
| // dropped indexes |
| for (IndexMetadata index : indexesDiff.entriesOnlyOnLeft().values()) |
| dropIndexFromSchemaMutation(oldTable, index, builder); |
| |
| // newly created indexes |
| for (IndexMetadata index : indexesDiff.entriesOnlyOnRight().values()) |
| addIndexToSchemaMutation(newTable, index, builder); |
| |
| // updated indexes need to be updated |
| for (MapDifference.ValueDifference<IndexMetadata> diff : indexesDiff.entriesDiffering().values()) |
| addUpdatedIndexToSchemaMutation(newTable, diff.rightValue(), builder); |
| } |
| |
| @VisibleForTesting |
| static Mutation.SimpleBuilder makeUpdateTableMutation(KeyspaceMetadata keyspace, |
| TableMetadata oldTable, |
| TableMetadata newTable, |
| long timestamp) |
| { |
| Mutation.SimpleBuilder builder = makeCreateKeyspaceMutation(keyspace.name, keyspace.params, timestamp); |
| addAlterTableToSchemaMutation(oldTable, newTable, builder); |
| return builder; |
| } |
| |
| private static MapDifference<String, IndexMetadata> indexesDiff(Indexes before, Indexes after) |
| { |
| Map<String, IndexMetadata> beforeMap = new HashMap<>(); |
| before.forEach(i -> beforeMap.put(i.name, i)); |
| |
| Map<String, IndexMetadata> afterMap = new HashMap<>(); |
| after.forEach(i -> afterMap.put(i.name, i)); |
| |
| return Maps.difference(beforeMap, afterMap); |
| } |
| |
| private static MapDifference<String, TriggerMetadata> triggersDiff(Triggers before, Triggers after) |
| { |
| Map<String, TriggerMetadata> beforeMap = new HashMap<>(); |
| before.forEach(t -> beforeMap.put(t.name, t)); |
| |
| Map<String, TriggerMetadata> afterMap = new HashMap<>(); |
| after.forEach(t -> afterMap.put(t.name, t)); |
| |
| return Maps.difference(beforeMap, afterMap); |
| } |
| |
| private static void addDropTableToSchemaMutation(TableMetadata table, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Tables).row(table.name).delete(); |
| |
| for (ColumnMetadata column : table.columns()) |
| dropColumnFromSchemaMutation(table, column, builder); |
| |
| for (TriggerMetadata trigger : table.triggers) |
| dropTriggerFromSchemaMutation(table, trigger, builder); |
| |
| for (DroppedColumn column : table.droppedColumns.values()) |
| dropDroppedColumnFromSchemaMutation(table, column, builder); |
| |
| for (IndexMetadata index : table.indexes) |
| dropIndexFromSchemaMutation(table, index, builder); |
| } |
| |
| private static void addColumnToSchemaMutation(TableMetadata table, ColumnMetadata column, Mutation.SimpleBuilder builder) |
| { |
| AbstractType<?> type = column.type; |
| if (type instanceof ReversedType) |
| type = ((ReversedType) type).baseType; |
| |
| builder.update(Columns) |
| .row(table.name, column.name.toString()) |
| .add("column_name_bytes", column.name.bytes) |
| .add("kind", column.kind.toString().toLowerCase()) |
| .add("position", column.position()) |
| .add("clustering_order", column.clusteringOrder().toString().toLowerCase()) |
| .add("type", type.asCQL3Type().toString()); |
| } |
| |
| private static void dropColumnFromSchemaMutation(TableMetadata table, ColumnMetadata column, Mutation.SimpleBuilder builder) |
| { |
| // Note: we do want to use name.toString(), not name.bytes directly for backward compatibility (For CQL3, this won't make a difference). |
| builder.update(Columns).row(table.name, column.name.toString()).delete(); |
| } |
| |
| private static void addDroppedColumnToSchemaMutation(TableMetadata table, DroppedColumn column, Mutation.SimpleBuilder builder) |
| { |
| builder.update(DroppedColumns) |
| .row(table.name, column.column.name.toString()) |
| .add("dropped_time", new Date(TimeUnit.MICROSECONDS.toMillis(column.droppedTime))) |
| .add("type", column.column.type.asCQL3Type().toString()) |
| .add("kind", column.column.kind.toString().toLowerCase()); |
| } |
| |
| private static void dropDroppedColumnFromSchemaMutation(TableMetadata table, DroppedColumn column, Mutation.SimpleBuilder builder) |
| { |
| builder.update(DroppedColumns).row(table.name, column.column.name.toString()).delete(); |
| } |
| |
| private static void addTriggerToSchemaMutation(TableMetadata table, TriggerMetadata trigger, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Triggers) |
| .row(table.name, trigger.name) |
| .add("options", Collections.singletonMap("class", trigger.classOption)); |
| } |
| |
| private static void dropTriggerFromSchemaMutation(TableMetadata table, TriggerMetadata trigger, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Triggers).row(table.name, trigger.name).delete(); |
| } |
| |
| private static void addViewToSchemaMutation(ViewMetadata view, boolean includeColumns, Mutation.SimpleBuilder builder) |
| { |
| TableMetadata table = view.metadata; |
| Row.SimpleBuilder rowBuilder = builder.update(Views) |
| .row(view.name()) |
| .deletePrevious() |
| .add("include_all_columns", view.includeAllColumns) |
| .add("base_table_id", view.baseTableId.asUUID()) |
| .add("base_table_name", view.baseTableName) |
| .add("where_clause", view.whereClause.toCQLString()) |
| .add("id", table.id.asUUID()); |
| |
| addTableParamsToRowBuilder(table.params, rowBuilder); |
| |
| if (includeColumns) |
| { |
| for (ColumnMetadata column : table.columns()) |
| addColumnToSchemaMutation(table, column, builder); |
| |
| for (DroppedColumn column : table.droppedColumns.values()) |
| addDroppedColumnToSchemaMutation(table, column, builder); |
| } |
| } |
| |
| private static void addDropViewToSchemaMutation(ViewMetadata view, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Views).row(view.name()).delete(); |
| |
| TableMetadata table = view.metadata; |
| for (ColumnMetadata column : table.columns()) |
| dropColumnFromSchemaMutation(table, column, builder); |
| } |
| |
| private static void addAlterViewToSchemaMutation(ViewMetadata before, ViewMetadata after, Mutation.SimpleBuilder builder) |
| { |
| addViewToSchemaMutation(after, false, builder); |
| |
| MapDifference<ByteBuffer, ColumnMetadata> columnDiff = Maps.difference(before.metadata.columns, after.metadata.columns); |
| |
| // columns that are no longer needed |
| for (ColumnMetadata column : columnDiff.entriesOnlyOnLeft().values()) |
| dropColumnFromSchemaMutation(before.metadata, column, builder); |
| |
| // newly added columns |
| for (ColumnMetadata column : columnDiff.entriesOnlyOnRight().values()) |
| addColumnToSchemaMutation(after.metadata, column, builder); |
| |
| // old columns with updated attributes |
| for (ByteBuffer name : columnDiff.entriesDiffering().keySet()) |
| addColumnToSchemaMutation(after.metadata, after.metadata.getColumn(name), builder); |
| } |
| |
| private static void addIndexToSchemaMutation(TableMetadata table, IndexMetadata index, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Indexes) |
| .row(table.name, index.name) |
| .add("kind", index.kind.toString()) |
| .add("options", index.options); |
| } |
| |
| private static void dropIndexFromSchemaMutation(TableMetadata table, IndexMetadata index, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Indexes).row(table.name, index.name).delete(); |
| } |
| |
| private static void addUpdatedIndexToSchemaMutation(TableMetadata table, |
| IndexMetadata index, |
| Mutation.SimpleBuilder builder) |
| { |
| addIndexToSchemaMutation(table, index, builder); |
| } |
| |
| private static void addFunctionToSchemaMutation(UDFunction function, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Functions) |
| .row(function.name().name, function.argumentsList()) |
| .add("body", function.body()) |
| .add("language", function.language()) |
| .add("return_type", function.returnType().asCQL3Type().toString()) |
| .add("called_on_null_input", function.isCalledOnNullInput()) |
| .add("argument_names", function.argNames().stream().map((c) -> bbToString(c.bytes)).collect(toList())); |
| } |
| |
| private static String bbToString(ByteBuffer bb) |
| { |
| try |
| { |
| return ByteBufferUtil.string(bb); |
| } |
| catch (CharacterCodingException e) |
| { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| private static void addDropFunctionToSchemaMutation(UDFunction function, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Functions).row(function.name().name, function.argumentsList()).delete(); |
| } |
| |
| private static void addAggregateToSchemaMutation(UDAggregate aggregate, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Aggregates) |
| .row(aggregate.name().name, aggregate.argumentsList()) |
| .add("return_type", aggregate.returnType().asCQL3Type().toString()) |
| .add("state_func", aggregate.stateFunction().name().name) |
| .add("state_type", aggregate.stateType().asCQL3Type().toString()) |
| .add("final_func", aggregate.finalFunction() != null ? aggregate.finalFunction().name().name : null) |
| .add("initcond", aggregate.initialCondition() != null |
| // must use the frozen state type here, as 'null' for unfrozen collections may mean 'empty' |
| ? aggregate.stateType().freeze().asCQL3Type().toCQLLiteral(aggregate.initialCondition(), ProtocolVersion.CURRENT) |
| : null); |
| } |
| |
| private static void addDropAggregateToSchemaMutation(UDAggregate aggregate, Mutation.SimpleBuilder builder) |
| { |
| builder.update(Aggregates).row(aggregate.name().name, aggregate.argumentsList()).delete(); |
| } |
| |
| /* |
| * Fetching schema |
| */ |
| public static Keyspaces fetchNonSystemKeyspaces() |
| { |
| return fetchKeyspacesWithout(SchemaConstants.LOCAL_SYSTEM_KEYSPACE_NAMES); |
| } |
| |
| private static Keyspaces fetchKeyspacesWithout(Set<String> excludedKeyspaceNames) |
| { |
| String query = format("SELECT keyspace_name FROM %s.%s", SchemaConstants.SCHEMA_KEYSPACE_NAME, KEYSPACES); |
| |
| Keyspaces.Builder keyspaces = org.apache.cassandra.schema.Keyspaces.builder(); |
| for (UntypedResultSet.Row row : query(query)) |
| { |
| String keyspaceName = row.getString("keyspace_name"); |
| if (!excludedKeyspaceNames.contains(keyspaceName)) |
| keyspaces.add(fetchKeyspace(keyspaceName)); |
| } |
| return keyspaces.build(); |
| } |
| |
| private static KeyspaceMetadata fetchKeyspace(String keyspaceName) |
| { |
| KeyspaceParams params = fetchKeyspaceParams(keyspaceName); |
| Types types = fetchTypes(keyspaceName); |
| Tables tables = fetchTables(keyspaceName, types); |
| Views views = fetchViews(keyspaceName, types); |
| Functions functions = fetchFunctions(keyspaceName, types); |
| return KeyspaceMetadata.create(keyspaceName, params, tables, views, types, functions); |
| } |
| |
| private static KeyspaceParams fetchKeyspaceParams(String keyspaceName) |
| { |
| String query = format("SELECT * FROM %s.%s WHERE keyspace_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, KEYSPACES); |
| |
| UntypedResultSet.Row row = query(query, keyspaceName).one(); |
| boolean durableWrites = row.getBoolean(KeyspaceParams.Option.DURABLE_WRITES.toString()); |
| Map<String, String> replication = row.getFrozenTextMap(KeyspaceParams.Option.REPLICATION.toString()); |
| return KeyspaceParams.create(durableWrites, replication); |
| } |
| |
| private static Types fetchTypes(String keyspaceName) |
| { |
| String query = format("SELECT * FROM %s.%s WHERE keyspace_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, TYPES); |
| |
| Types.RawBuilder types = org.apache.cassandra.schema.Types.rawBuilder(keyspaceName); |
| for (UntypedResultSet.Row row : query(query, keyspaceName)) |
| { |
| String name = row.getString("type_name"); |
| List<String> fieldNames = row.getFrozenList("field_names", UTF8Type.instance); |
| List<String> fieldTypes = row.getFrozenList("field_types", UTF8Type.instance); |
| types.add(name, fieldNames, fieldTypes); |
| } |
| return types.build(); |
| } |
| |
| private static Tables fetchTables(String keyspaceName, Types types) |
| { |
| String query = format("SELECT table_name FROM %s.%s WHERE keyspace_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, TABLES); |
| |
| Tables.Builder tables = org.apache.cassandra.schema.Tables.builder(); |
| for (UntypedResultSet.Row row : query(query, keyspaceName)) |
| { |
| String tableName = row.getString("table_name"); |
| try |
| { |
| tables.add(fetchTable(keyspaceName, tableName, types)); |
| } |
| catch (MissingColumns exc) |
| { |
| String errorMsg = String.format("No partition columns found for table %s.%s in %s.%s. This may be due to " + |
| "corruption or concurrent dropping and altering of a table. If this table is supposed " + |
| "to be dropped, {}run the following query to cleanup: " + |
| "\"DELETE FROM %s.%s WHERE keyspace_name = '%s' AND table_name = '%s'; " + |
| "DELETE FROM %s.%s WHERE keyspace_name = '%s' AND table_name = '%s';\" " + |
| "If the table is not supposed to be dropped, restore %s.%s sstables from backups.", |
| keyspaceName, tableName, SchemaConstants.SCHEMA_KEYSPACE_NAME, COLUMNS, |
| SchemaConstants.SCHEMA_KEYSPACE_NAME, TABLES, keyspaceName, tableName, |
| SchemaConstants.SCHEMA_KEYSPACE_NAME, COLUMNS, keyspaceName, tableName, |
| SchemaConstants.SCHEMA_KEYSPACE_NAME, COLUMNS); |
| |
| if (IGNORE_CORRUPTED_SCHEMA_TABLES) |
| { |
| logger.error(errorMsg, "", exc); |
| } |
| else |
| { |
| logger.error(errorMsg, "restart cassandra with -Dcassandra.ignore_corrupted_schema_tables=true and "); |
| throw exc; |
| } |
| } |
| } |
| return tables.build(); |
| } |
| |
| private static TableMetadata fetchTable(String keyspaceName, String tableName, Types types) |
| { |
| String query = String.format("SELECT * FROM %s.%s WHERE keyspace_name = ? AND table_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, TABLES); |
| UntypedResultSet rows = query(query, keyspaceName, tableName); |
| if (rows.isEmpty()) |
| throw new RuntimeException(String.format("%s:%s not found in the schema definitions keyspace.", keyspaceName, tableName)); |
| UntypedResultSet.Row row = rows.one(); |
| |
| Set<TableMetadata.Flag> flags = TableMetadata.Flag.fromStringSet(row.getFrozenSet("flags", UTF8Type.instance)); |
| return TableMetadata.builder(keyspaceName, tableName, TableId.fromUUID(row.getUUID("id"))) |
| .flags(flags) |
| .params(createTableParamsFromRow(row)) |
| .addColumns(fetchColumns(keyspaceName, tableName, types)) |
| .droppedColumns(fetchDroppedColumns(keyspaceName, tableName)) |
| .indexes(fetchIndexes(keyspaceName, tableName)) |
| .triggers(fetchTriggers(keyspaceName, tableName)) |
| .build(); |
| } |
| |
| @VisibleForTesting |
| static TableParams createTableParamsFromRow(UntypedResultSet.Row row) |
| { |
| return TableParams.builder() |
| .bloomFilterFpChance(row.getDouble("bloom_filter_fp_chance")) |
| .caching(CachingParams.fromMap(row.getFrozenTextMap("caching"))) |
| .comment(row.getString("comment")) |
| .compaction(CompactionParams.fromMap(row.getFrozenTextMap("compaction"))) |
| .compression(CompressionParams.fromMap(row.getFrozenTextMap("compression"))) |
| .memtable(MemtableParams.getWithFallback(row.has("memtable") |
| ? row.getString("memtable") |
| : null)) // memtable column was introduced in 4.1 |
| .defaultTimeToLive(row.getInt("default_time_to_live")) |
| .extensions(row.getFrozenMap("extensions", UTF8Type.instance, BytesType.instance)) |
| .gcGraceSeconds(row.getInt("gc_grace_seconds")) |
| .maxIndexInterval(row.getInt("max_index_interval")) |
| .memtableFlushPeriodInMs(row.getInt("memtable_flush_period_in_ms")) |
| .minIndexInterval(row.getInt("min_index_interval")) |
| .crcCheckChance(row.getDouble("crc_check_chance")) |
| .speculativeRetry(SpeculativeRetryPolicy.fromString(row.getString("speculative_retry"))) |
| .additionalWritePolicy(row.has("additional_write_policy") ? |
| SpeculativeRetryPolicy.fromString(row.getString("additional_write_policy")) : |
| SpeculativeRetryPolicy.fromString("99PERCENTILE")) |
| .cdc(row.has("cdc") && row.getBoolean("cdc")) |
| .readRepair(getReadRepairStrategy(row)) |
| .build(); |
| } |
| |
| private static List<ColumnMetadata> fetchColumns(String keyspace, String table, Types types) |
| { |
| String query = format("SELECT * FROM %s.%s WHERE keyspace_name = ? AND table_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, COLUMNS); |
| UntypedResultSet columnRows = query(query, keyspace, table); |
| if (columnRows.isEmpty()) |
| throw new MissingColumns("Columns not found in schema table for " + keyspace + '.' + table); |
| |
| List<ColumnMetadata> columns = new ArrayList<>(); |
| columnRows.forEach(row -> columns.add(createColumnFromRow(row, types))); |
| |
| if (columns.stream().noneMatch(ColumnMetadata::isPartitionKey)) |
| throw new MissingColumns("No partition key columns found in schema table for " + keyspace + "." + table); |
| |
| return columns; |
| } |
| |
| @VisibleForTesting |
| static ColumnMetadata createColumnFromRow(UntypedResultSet.Row row, Types types) |
| { |
| String keyspace = row.getString("keyspace_name"); |
| String table = row.getString("table_name"); |
| |
| ColumnMetadata.Kind kind = ColumnMetadata.Kind.valueOf(row.getString("kind").toUpperCase()); |
| |
| int position = row.getInt("position"); |
| ClusteringOrder order = ClusteringOrder.valueOf(row.getString("clustering_order").toUpperCase()); |
| |
| AbstractType<?> type = CQLTypeParser.parse(keyspace, row.getString("type"), types); |
| if (order == ClusteringOrder.DESC) |
| type = ReversedType.getInstance(type); |
| |
| ColumnIdentifier name = new ColumnIdentifier(row.getBytes("column_name_bytes"), row.getString("column_name")); |
| |
| return new ColumnMetadata(keyspace, table, name, type, position, kind); |
| } |
| |
| private static Map<ByteBuffer, DroppedColumn> fetchDroppedColumns(String keyspace, String table) |
| { |
| String query = format("SELECT * FROM %s.%s WHERE keyspace_name = ? AND table_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, DROPPED_COLUMNS); |
| Map<ByteBuffer, DroppedColumn> columns = new HashMap<>(); |
| for (UntypedResultSet.Row row : query(query, keyspace, table)) |
| { |
| DroppedColumn column = createDroppedColumnFromRow(row); |
| columns.put(column.column.name.bytes, column); |
| } |
| return columns; |
| } |
| |
| private static DroppedColumn createDroppedColumnFromRow(UntypedResultSet.Row row) |
| { |
| String keyspace = row.getString("keyspace_name"); |
| String table = row.getString("table_name"); |
| String name = row.getString("column_name"); |
| /* |
| * we never store actual UDT names in dropped column types (so that we can safely drop types if nothing refers to |
| * them anymore), so before storing dropped columns in schema we expand UDTs to tuples. See expandUserTypes method. |
| * Because of that, we can safely pass Types.none() to parse() |
| */ |
| AbstractType<?> type = CQLTypeParser.parse(keyspace, row.getString("type"), org.apache.cassandra.schema.Types.none()); |
| ColumnMetadata.Kind kind = row.has("kind") |
| ? ColumnMetadata.Kind.valueOf(row.getString("kind").toUpperCase()) |
| : ColumnMetadata.Kind.REGULAR; |
| assert kind == ColumnMetadata.Kind.REGULAR || kind == ColumnMetadata.Kind.STATIC |
| : "Unexpected dropped column kind: " + kind; |
| |
| ColumnMetadata column = new ColumnMetadata(keyspace, table, ColumnIdentifier.getInterned(name, true), type, ColumnMetadata.NO_POSITION, kind); |
| long droppedTime = TimeUnit.MILLISECONDS.toMicros(row.getLong("dropped_time")); |
| return new DroppedColumn(column, droppedTime); |
| } |
| |
| private static Indexes fetchIndexes(String keyspace, String table) |
| { |
| String query = String.format("SELECT * FROM %s.%s WHERE keyspace_name = ? AND table_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, INDEXES); |
| Indexes.Builder indexes = org.apache.cassandra.schema.Indexes.builder(); |
| query(query, keyspace, table).forEach(row -> indexes.add(createIndexMetadataFromRow(row))); |
| return indexes.build(); |
| } |
| |
| private static IndexMetadata createIndexMetadataFromRow(UntypedResultSet.Row row) |
| { |
| String name = row.getString("index_name"); |
| IndexMetadata.Kind type = IndexMetadata.Kind.valueOf(row.getString("kind")); |
| Map<String, String> options = row.getFrozenTextMap("options"); |
| return IndexMetadata.fromSchemaMetadata(name, type, options); |
| } |
| |
| private static Triggers fetchTriggers(String keyspace, String table) |
| { |
| String query = String.format("SELECT * FROM %s.%s WHERE keyspace_name = ? AND table_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, TRIGGERS); |
| Triggers.Builder triggers = org.apache.cassandra.schema.Triggers.builder(); |
| query(query, keyspace, table).forEach(row -> triggers.add(createTriggerFromRow(row))); |
| return triggers.build(); |
| } |
| |
| private static TriggerMetadata createTriggerFromRow(UntypedResultSet.Row row) |
| { |
| String name = row.getString("trigger_name"); |
| String classOption = row.getFrozenTextMap("options").get("class"); |
| return new TriggerMetadata(name, classOption); |
| } |
| |
| private static Views fetchViews(String keyspaceName, Types types) |
| { |
| String query = format("SELECT view_name FROM %s.%s WHERE keyspace_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, VIEWS); |
| |
| Views.Builder views = org.apache.cassandra.schema.Views.builder(); |
| for (UntypedResultSet.Row row : query(query, keyspaceName)) |
| views.put(fetchView(keyspaceName, row.getString("view_name"), types)); |
| return views.build(); |
| } |
| |
| private static ViewMetadata fetchView(String keyspaceName, String viewName, Types types) |
| { |
| String query = String.format("SELECT * FROM %s.%s WHERE keyspace_name = ? AND view_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, VIEWS); |
| UntypedResultSet rows = query(query, keyspaceName, viewName); |
| if (rows.isEmpty()) |
| throw new RuntimeException(String.format("%s:%s not found in the schema definitions keyspace.", keyspaceName, viewName)); |
| UntypedResultSet.Row row = rows.one(); |
| |
| TableId baseTableId = TableId.fromUUID(row.getUUID("base_table_id")); |
| String baseTableName = row.getString("base_table_name"); |
| boolean includeAll = row.getBoolean("include_all_columns"); |
| String whereClauseString = row.getString("where_clause"); |
| |
| List<ColumnMetadata> columns = fetchColumns(keyspaceName, viewName, types); |
| |
| TableMetadata metadata = |
| TableMetadata.builder(keyspaceName, viewName, TableId.fromUUID(row.getUUID("id"))) |
| .kind(TableMetadata.Kind.VIEW) |
| .addColumns(columns) |
| .droppedColumns(fetchDroppedColumns(keyspaceName, viewName)) |
| .params(createTableParamsFromRow(row)) |
| .build(); |
| |
| WhereClause whereClause; |
| |
| try |
| { |
| whereClause = WhereClause.parse(whereClauseString); |
| } |
| catch (RecognitionException e) |
| { |
| throw new RuntimeException(format("Unexpected error while parsing materialized view's where clause for '%s' (got %s)", viewName, whereClauseString)); |
| } |
| |
| return new ViewMetadata(baseTableId, baseTableName, includeAll, whereClause, metadata); |
| } |
| |
| private static Functions fetchFunctions(String keyspaceName, Types types) |
| { |
| Collection<UDFunction> udfs = fetchUDFs(keyspaceName, types); |
| Collection<UDAggregate> udas = fetchUDAs(keyspaceName, udfs, types); |
| |
| return org.apache.cassandra.schema.Functions.builder().add(udfs).add(udas).build(); |
| } |
| |
| private static Collection<UDFunction> fetchUDFs(String keyspaceName, Types types) |
| { |
| String query = format("SELECT * FROM %s.%s WHERE keyspace_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, FUNCTIONS); |
| |
| Collection<UDFunction> functions = new ArrayList<>(); |
| for (UntypedResultSet.Row row : query(query, keyspaceName)) |
| functions.add(createUDFFromRow(row, types)); |
| return functions; |
| } |
| |
| private static UDFunction createUDFFromRow(UntypedResultSet.Row row, Types types) |
| { |
| String ksName = row.getString("keyspace_name"); |
| String functionName = row.getString("function_name"); |
| FunctionName name = new FunctionName(ksName, functionName); |
| |
| List<ColumnIdentifier> argNames = new ArrayList<>(); |
| for (String arg : row.getFrozenList("argument_names", UTF8Type.instance)) |
| argNames.add(new ColumnIdentifier(arg, true)); |
| |
| List<AbstractType<?>> argTypes = new ArrayList<>(); |
| for (String type : row.getFrozenList("argument_types", UTF8Type.instance)) |
| argTypes.add(CQLTypeParser.parse(ksName, type, types).udfType()); |
| |
| AbstractType<?> returnType = CQLTypeParser.parse(ksName, row.getString("return_type"), types).udfType(); |
| |
| String language = row.getString("language"); |
| String body = row.getString("body"); |
| boolean calledOnNullInput = row.getBoolean("called_on_null_input"); |
| |
| /* |
| * TODO: find a way to get rid of Schema.instance dependency; evaluate if the opimisation below makes a difference |
| * in the first place. Remove if it isn't. |
| */ |
| org.apache.cassandra.cql3.functions.Function existing = Schema.instance.findFunction(name, argTypes).orElse(null); |
| if (existing instanceof UDFunction) |
| { |
| // This check prevents duplicate compilation of effectively the same UDF. |
| // Duplicate compilation attempts can occur on the coordinator node handling the CREATE FUNCTION |
| // statement, since CreateFunctionStatement needs to execute UDFunction.create but schema migration |
| // also needs that (since it needs to handle its own change). |
| UDFunction udf = (UDFunction) existing; |
| if (udf.argNames().equals(argNames) && |
| udf.argTypes().equals(argTypes) && |
| udf.returnType().equals(returnType) && |
| !udf.isAggregate() && |
| udf.language().equals(language) && |
| udf.body().equals(body) && |
| udf.isCalledOnNullInput() == calledOnNullInput) |
| { |
| logger.trace("Skipping duplicate compilation of already existing UDF {}", name); |
| return udf; |
| } |
| } |
| |
| try |
| { |
| return UDFunction.create(name, argNames, argTypes, returnType, calledOnNullInput, language, body); |
| } |
| catch (InvalidRequestException e) |
| { |
| logger.error(String.format("Cannot load function '%s' from schema: this function won't be available (on this node)", name), e); |
| return UDFunction.createBrokenFunction(name, argNames, argTypes, returnType, calledOnNullInput, language, body, e); |
| } |
| } |
| |
| private static Collection<UDAggregate> fetchUDAs(String keyspaceName, Collection<UDFunction> udfs, Types types) |
| { |
| String query = format("SELECT * FROM %s.%s WHERE keyspace_name = ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, AGGREGATES); |
| |
| Collection<UDAggregate> aggregates = new ArrayList<>(); |
| query(query, keyspaceName).forEach(row -> aggregates.add(createUDAFromRow(row, udfs, types))); |
| return aggregates; |
| } |
| |
| private static UDAggregate createUDAFromRow(UntypedResultSet.Row row, Collection<UDFunction> functions, Types types) |
| { |
| String ksName = row.getString("keyspace_name"); |
| String functionName = row.getString("aggregate_name"); |
| FunctionName name = new FunctionName(ksName, functionName); |
| |
| List<AbstractType<?>> argTypes = |
| row.getFrozenList("argument_types", UTF8Type.instance) |
| .stream() |
| .map(t -> CQLTypeParser.parse(ksName, t, types).udfType()) |
| .collect(toList()); |
| |
| AbstractType<?> returnType = CQLTypeParser.parse(ksName, row.getString("return_type"), types).udfType(); |
| |
| FunctionName stateFunc = new FunctionName(ksName, (row.getString("state_func"))); |
| |
| FunctionName finalFunc = row.has("final_func") ? new FunctionName(ksName, row.getString("final_func")) : null; |
| AbstractType<?> stateType = row.has("state_type") ? CQLTypeParser.parse(ksName, row.getString("state_type"), types) : null; |
| ByteBuffer initcond = row.has("initcond") ? Terms.asBytes(ksName, row.getString("initcond"), stateType) : null; |
| |
| return UDAggregate.create(functions, name, argTypes, returnType, stateFunc, finalFunc, stateType, initcond); |
| } |
| |
| private static UntypedResultSet query(String query, Object... variables) |
| { |
| return executeInternal(query, variables); |
| } |
| |
| /* |
| * Merging schema |
| */ |
| |
| /** |
| * Computes the set of names of keyspaces affected by the provided schema mutations. |
| */ |
| static Set<String> affectedKeyspaces(Collection<Mutation> mutations) |
| { |
| // only compare the keyspaces affected by this set of schema mutations |
| return mutations.stream() |
| .map(m -> UTF8Type.instance.compose(m.key().getKey())) |
| .collect(toSet()); |
| } |
| |
| static void applyChanges(Collection<Mutation> mutations) |
| { |
| mutations.forEach(Mutation::apply); |
| if (SchemaKeyspace.FLUSH_SCHEMA_TABLES) |
| SchemaKeyspace.flush(); |
| } |
| |
| static Keyspaces fetchKeyspaces(Set<String> toFetch) |
| { |
| /* |
| * We know the keyspace names we are going to query, but we still want to run the SELECT IN |
| * query, to filter out the keyspaces that had been dropped by the applied mutation set. |
| */ |
| String query = format("SELECT keyspace_name FROM %s.%s WHERE keyspace_name IN ?", SchemaConstants.SCHEMA_KEYSPACE_NAME, KEYSPACES); |
| |
| Keyspaces.Builder keyspaces = org.apache.cassandra.schema.Keyspaces.builder(); |
| for (UntypedResultSet.Row row : query(query, new ArrayList<>(toFetch))) |
| keyspaces.add(fetchKeyspace(row.getString("keyspace_name"))); |
| return keyspaces.build(); |
| } |
| |
| @VisibleForTesting |
| static class MissingColumns extends RuntimeException |
| { |
| MissingColumns(String message) |
| { |
| super(message); |
| } |
| } |
| |
| private static ReadRepairStrategy getReadRepairStrategy(UntypedResultSet.Row row) |
| { |
| return row.has("read_repair") |
| ? ReadRepairStrategy.fromString(row.getString("read_repair")) |
| : ReadRepairStrategy.BLOCKING; |
| } |
| } |
