Examples with AliasMetaData org.elasticsearch.cluster.metadata.AliasMetaData used on opensource projects

Example 6 with AliasMetaData

use of org.elasticsearch.cluster.metadata.AliasMetaData in project elasticsearch by elastic.

the class RestGetAliasesAction method prepareRequest.

@Override
public RestChannelConsumer prepareRequest(final RestRequest request, final NodeClient client) throws IOException {
    final String[] aliases = request.paramAsStringArrayOrEmptyIfAll("name");
    final GetAliasesRequest getAliasesRequest = new GetAliasesRequest(aliases);
    final String[] indices = Strings.splitStringByCommaToArray(request.param("index"));
    getAliasesRequest.indices(indices);
    getAliasesRequest.indicesOptions(IndicesOptions.fromRequest(request, getAliasesRequest.indicesOptions()));
    getAliasesRequest.local(request.paramAsBoolean("local", getAliasesRequest.local()));
    return channel -> client.admin().indices().getAliases(getAliasesRequest, new RestBuilderListener<GetAliasesResponse>(channel) {

        @Override
        public RestResponse buildResponse(GetAliasesResponse response, XContentBuilder builder) throws Exception {
            if (response.getAliases().isEmpty()) {
                if (indices.length > 0) {
                    return new BytesRestResponse(OK, builder.startObject().endObject());
                } else {
                    final String message = String.format(Locale.ROOT, "alias [%s] missing", toNamesString(getAliasesRequest.aliases()));
                    builder.startObject();
                    {
                        builder.field("error", message);
                        builder.field("status", RestStatus.NOT_FOUND.getStatus());
                    }
                    builder.endObject();
                    return new BytesRestResponse(RestStatus.NOT_FOUND, builder);
                }
            } else {
                builder.startObject();
                {
                    for (final ObjectObjectCursor<String, List<AliasMetaData>> entry : response.getAliases()) {
                        builder.startObject(entry.key);
                        {
                            builder.startObject("aliases");
                            {
                                for (final AliasMetaData alias : entry.value) {
                                    AliasMetaData.Builder.toXContent(alias, builder, ToXContent.EMPTY_PARAMS);
                                }
                            }
                            builder.endObject();
                        }
                        builder.endObject();
                    }
                }
                builder.endObject();
                return new BytesRestResponse(OK, builder);
            }
        }
    });
}

Example 7 with AliasMetaData

use of org.elasticsearch.cluster.metadata.AliasMetaData in project elasticsearch by elastic.

the class RestoreService method restoreSnapshot.

/**
     * Restores snapshot specified in the restore request.
     *
     * @param request  restore request
     * @param listener restore listener
     */
public void restoreSnapshot(final RestoreRequest request, final ActionListener<RestoreCompletionResponse> listener) {
    try {
        // Read snapshot info and metadata from the repository
        Repository repository = repositoriesService.repository(request.repositoryName);
        final RepositoryData repositoryData = repository.getRepositoryData();
        final Optional<SnapshotId> incompatibleSnapshotId = repositoryData.getIncompatibleSnapshotIds().stream().filter(s -> request.snapshotName.equals(s.getName())).findFirst();
        if (incompatibleSnapshotId.isPresent()) {
            throw new SnapshotRestoreException(request.repositoryName, request.snapshotName, "cannot restore incompatible snapshot");
        }
        final Optional<SnapshotId> matchingSnapshotId = repositoryData.getSnapshotIds().stream().filter(s -> request.snapshotName.equals(s.getName())).findFirst();
        if (matchingSnapshotId.isPresent() == false) {
            throw new SnapshotRestoreException(request.repositoryName, request.snapshotName, "snapshot does not exist");
        }
        final SnapshotId snapshotId = matchingSnapshotId.get();
        final SnapshotInfo snapshotInfo = repository.getSnapshotInfo(snapshotId);
        final Snapshot snapshot = new Snapshot(request.repositoryName, snapshotId);
        List<String> filteredIndices = SnapshotUtils.filterIndices(snapshotInfo.indices(), request.indices(), request.indicesOptions());
        MetaData metaData = repository.getSnapshotMetaData(snapshotInfo, repositoryData.resolveIndices(filteredIndices));
        // Make sure that we can restore from this snapshot
        validateSnapshotRestorable(request.repositoryName, snapshotInfo);
        // Find list of indices that we need to restore
        final Map<String, String> renamedIndices = renamedIndices(request, filteredIndices);
        // Now we can start the actual restore process by adding shards to be recovered in the cluster state
        // and updating cluster metadata (global and index) as needed
        clusterService.submitStateUpdateTask(request.cause(), new ClusterStateUpdateTask() {

            RestoreInfo restoreInfo = null;

            @Override
            public ClusterState execute(ClusterState currentState) {
                // Check if another restore process is already running - cannot run two restore processes at the
                // same time
                RestoreInProgress restoreInProgress = currentState.custom(RestoreInProgress.TYPE);
                if (restoreInProgress != null && !restoreInProgress.entries().isEmpty()) {
                    throw new ConcurrentSnapshotExecutionException(snapshot, "Restore process is already running in this cluster");
                }
                // Check if the snapshot to restore is currently being deleted
                SnapshotDeletionsInProgress deletionsInProgress = currentState.custom(SnapshotDeletionsInProgress.TYPE);
                if (deletionsInProgress != null && deletionsInProgress.hasDeletionsInProgress()) {
                    throw new ConcurrentSnapshotExecutionException(snapshot, "cannot restore a snapshot while a snapshot deletion is in-progress [" + deletionsInProgress.getEntries().get(0).getSnapshot() + "]");
                }
                // Updating cluster state
                ClusterState.Builder builder = ClusterState.builder(currentState);
                MetaData.Builder mdBuilder = MetaData.builder(currentState.metaData());
                ClusterBlocks.Builder blocks = ClusterBlocks.builder().blocks(currentState.blocks());
                RoutingTable.Builder rtBuilder = RoutingTable.builder(currentState.routingTable());
                ImmutableOpenMap<ShardId, RestoreInProgress.ShardRestoreStatus> shards;
                Set<String> aliases = new HashSet<>();
                if (!renamedIndices.isEmpty()) {
                    // We have some indices to restore
                    ImmutableOpenMap.Builder<ShardId, RestoreInProgress.ShardRestoreStatus> shardsBuilder = ImmutableOpenMap.builder();
                    final Version minIndexCompatibilityVersion = currentState.getNodes().getMaxNodeVersion().minimumIndexCompatibilityVersion();
                    for (Map.Entry<String, String> indexEntry : renamedIndices.entrySet()) {
                        String index = indexEntry.getValue();
                        boolean partial = checkPartial(index);
                        SnapshotRecoverySource recoverySource = new SnapshotRecoverySource(snapshot, snapshotInfo.version(), index);
                        String renamedIndexName = indexEntry.getKey();
                        IndexMetaData snapshotIndexMetaData = metaData.index(index);
                        snapshotIndexMetaData = updateIndexSettings(snapshotIndexMetaData, request.indexSettings, request.ignoreIndexSettings);
                        try {
                            snapshotIndexMetaData = metaDataIndexUpgradeService.upgradeIndexMetaData(snapshotIndexMetaData, minIndexCompatibilityVersion);
                        } catch (Exception ex) {
                            throw new SnapshotRestoreException(snapshot, "cannot restore index [" + index + "] because it cannot be upgraded", ex);
                        }
                        // Check that the index is closed or doesn't exist
                        IndexMetaData currentIndexMetaData = currentState.metaData().index(renamedIndexName);
                        IntSet ignoreShards = new IntHashSet();
                        final Index renamedIndex;
                        if (currentIndexMetaData == null) {
                            // Index doesn't exist - create it and start recovery
                            // Make sure that the index we are about to create has a validate name
                            MetaDataCreateIndexService.validateIndexName(renamedIndexName, currentState);
                            createIndexService.validateIndexSettings(renamedIndexName, snapshotIndexMetaData.getSettings());
                            IndexMetaData.Builder indexMdBuilder = IndexMetaData.builder(snapshotIndexMetaData).state(IndexMetaData.State.OPEN).index(renamedIndexName);
                            indexMdBuilder.settings(Settings.builder().put(snapshotIndexMetaData.getSettings()).put(IndexMetaData.SETTING_INDEX_UUID, UUIDs.randomBase64UUID()));
                            if (!request.includeAliases() && !snapshotIndexMetaData.getAliases().isEmpty()) {
                                // Remove all aliases - they shouldn't be restored
                                indexMdBuilder.removeAllAliases();
                            } else {
                                for (ObjectCursor<String> alias : snapshotIndexMetaData.getAliases().keys()) {
                                    aliases.add(alias.value);
                                }
                            }
                            IndexMetaData updatedIndexMetaData = indexMdBuilder.build();
                            if (partial) {
                                populateIgnoredShards(index, ignoreShards);
                            }
                            rtBuilder.addAsNewRestore(updatedIndexMetaData, recoverySource, ignoreShards);
                            blocks.addBlocks(updatedIndexMetaData);
                            mdBuilder.put(updatedIndexMetaData, true);
                            renamedIndex = updatedIndexMetaData.getIndex();
                        } else {
                            validateExistingIndex(currentIndexMetaData, snapshotIndexMetaData, renamedIndexName, partial);
                            // Index exists and it's closed - open it in metadata and start recovery
                            IndexMetaData.Builder indexMdBuilder = IndexMetaData.builder(snapshotIndexMetaData).state(IndexMetaData.State.OPEN);
                            indexMdBuilder.version(Math.max(snapshotIndexMetaData.getVersion(), currentIndexMetaData.getVersion() + 1));
                            if (!request.includeAliases()) {
                                // Remove all snapshot aliases
                                if (!snapshotIndexMetaData.getAliases().isEmpty()) {
                                    indexMdBuilder.removeAllAliases();
                                }
                                /// Add existing aliases
                                for (ObjectCursor<AliasMetaData> alias : currentIndexMetaData.getAliases().values()) {
                                    indexMdBuilder.putAlias(alias.value);
                                }
                            } else {
                                for (ObjectCursor<String> alias : snapshotIndexMetaData.getAliases().keys()) {
                                    aliases.add(alias.value);
                                }
                            }
                            indexMdBuilder.settings(Settings.builder().put(snapshotIndexMetaData.getSettings()).put(IndexMetaData.SETTING_INDEX_UUID, currentIndexMetaData.getIndexUUID()));
                            IndexMetaData updatedIndexMetaData = indexMdBuilder.index(renamedIndexName).build();
                            rtBuilder.addAsRestore(updatedIndexMetaData, recoverySource);
                            blocks.updateBlocks(updatedIndexMetaData);
                            mdBuilder.put(updatedIndexMetaData, true);
                            renamedIndex = updatedIndexMetaData.getIndex();
                        }
                        for (int shard = 0; shard < snapshotIndexMetaData.getNumberOfShards(); shard++) {
                            if (!ignoreShards.contains(shard)) {
                                shardsBuilder.put(new ShardId(renamedIndex, shard), new RestoreInProgress.ShardRestoreStatus(clusterService.state().nodes().getLocalNodeId()));
                            } else {
                                shardsBuilder.put(new ShardId(renamedIndex, shard), new RestoreInProgress.ShardRestoreStatus(clusterService.state().nodes().getLocalNodeId(), RestoreInProgress.State.FAILURE));
                            }
                        }
                    }
                    shards = shardsBuilder.build();
                    RestoreInProgress.Entry restoreEntry = new RestoreInProgress.Entry(snapshot, overallState(RestoreInProgress.State.INIT, shards), Collections.unmodifiableList(new ArrayList<>(renamedIndices.keySet())), shards);
                    builder.putCustom(RestoreInProgress.TYPE, new RestoreInProgress(restoreEntry));
                } else {
                    shards = ImmutableOpenMap.of();
                }
                checkAliasNameConflicts(renamedIndices, aliases);
                // Restore global state if needed
                restoreGlobalStateIfRequested(mdBuilder);
                if (completed(shards)) {
                    // We don't have any indices to restore - we are done
                    restoreInfo = new RestoreInfo(snapshotId.getName(), Collections.unmodifiableList(new ArrayList<>(renamedIndices.keySet())), shards.size(), shards.size() - failedShards(shards));
                }
                RoutingTable rt = rtBuilder.build();
                ClusterState updatedState = builder.metaData(mdBuilder).blocks(blocks).routingTable(rt).build();
                return allocationService.reroute(updatedState, "restored snapshot [" + snapshot + "]");
            }

            private void checkAliasNameConflicts(Map<String, String> renamedIndices, Set<String> aliases) {
                for (Map.Entry<String, String> renamedIndex : renamedIndices.entrySet()) {
                    if (aliases.contains(renamedIndex.getKey())) {
                        throw new SnapshotRestoreException(snapshot, "cannot rename index [" + renamedIndex.getValue() + "] into [" + renamedIndex.getKey() + "] because of conflict with an alias with the same name");
                    }
                }
            }

            private void populateIgnoredShards(String index, IntSet ignoreShards) {
                for (SnapshotShardFailure failure : snapshotInfo.shardFailures()) {
                    if (index.equals(failure.index())) {
                        ignoreShards.add(failure.shardId());
                    }
                }
            }

            private boolean checkPartial(String index) {
                // Make sure that index was fully snapshotted
                if (failed(snapshotInfo, index)) {
                    if (request.partial()) {
                        return true;
                    } else {
                        throw new SnapshotRestoreException(snapshot, "index [" + index + "] wasn't fully snapshotted - cannot restore");
                    }
                } else {
                    return false;
                }
            }

            private void validateExistingIndex(IndexMetaData currentIndexMetaData, IndexMetaData snapshotIndexMetaData, String renamedIndex, boolean partial) {
                // Index exist - checking that it's closed
                if (currentIndexMetaData.getState() != IndexMetaData.State.CLOSE) {
                    // TODO: Enable restore for open indices
                    throw new SnapshotRestoreException(snapshot, "cannot restore index [" + renamedIndex + "] because it's open");
                }
                // Index exist - checking if it's partial restore
                if (partial) {
                    throw new SnapshotRestoreException(snapshot, "cannot restore partial index [" + renamedIndex + "] because such index already exists");
                }
                // Make sure that the number of shards is the same. That's the only thing that we cannot change
                if (currentIndexMetaData.getNumberOfShards() != snapshotIndexMetaData.getNumberOfShards()) {
                    throw new SnapshotRestoreException(snapshot, "cannot restore index [" + renamedIndex + "] with [" + currentIndexMetaData.getNumberOfShards() + "] shard from snapshot with [" + snapshotIndexMetaData.getNumberOfShards() + "] shards");
                }
            }

            /**
                 * Optionally updates index settings in indexMetaData by removing settings listed in ignoreSettings and
                 * merging them with settings in changeSettings.
                 */
            private IndexMetaData updateIndexSettings(IndexMetaData indexMetaData, Settings changeSettings, String[] ignoreSettings) {
                if (changeSettings.names().isEmpty() && ignoreSettings.length == 0) {
                    return indexMetaData;
                }
                Settings normalizedChangeSettings = Settings.builder().put(changeSettings).normalizePrefix(IndexMetaData.INDEX_SETTING_PREFIX).build();
                IndexMetaData.Builder builder = IndexMetaData.builder(indexMetaData);
                Map<String, String> settingsMap = new HashMap<>(indexMetaData.getSettings().getAsMap());
                List<String> simpleMatchPatterns = new ArrayList<>();
                for (String ignoredSetting : ignoreSettings) {
                    if (!Regex.isSimpleMatchPattern(ignoredSetting)) {
                        if (UNREMOVABLE_SETTINGS.contains(ignoredSetting)) {
                            throw new SnapshotRestoreException(snapshot, "cannot remove setting [" + ignoredSetting + "] on restore");
                        } else {
                            settingsMap.remove(ignoredSetting);
                        }
                    } else {
                        simpleMatchPatterns.add(ignoredSetting);
                    }
                }
                if (!simpleMatchPatterns.isEmpty()) {
                    String[] removePatterns = simpleMatchPatterns.toArray(new String[simpleMatchPatterns.size()]);
                    Iterator<Map.Entry<String, String>> iterator = settingsMap.entrySet().iterator();
                    while (iterator.hasNext()) {
                        Map.Entry<String, String> entry = iterator.next();
                        if (UNREMOVABLE_SETTINGS.contains(entry.getKey()) == false) {
                            if (Regex.simpleMatch(removePatterns, entry.getKey())) {
                                iterator.remove();
                            }
                        }
                    }
                }
                for (Map.Entry<String, String> entry : normalizedChangeSettings.getAsMap().entrySet()) {
                    if (UNMODIFIABLE_SETTINGS.contains(entry.getKey())) {
                        throw new SnapshotRestoreException(snapshot, "cannot modify setting [" + entry.getKey() + "] on restore");
                    } else {
                        settingsMap.put(entry.getKey(), entry.getValue());
                    }
                }
                return builder.settings(Settings.builder().put(settingsMap)).build();
            }

            private void restoreGlobalStateIfRequested(MetaData.Builder mdBuilder) {
                if (request.includeGlobalState()) {
                    if (metaData.persistentSettings() != null) {
                        Settings settings = metaData.persistentSettings();
                        clusterSettings.validateUpdate(settings);
                        mdBuilder.persistentSettings(settings);
                    }
                    if (metaData.templates() != null) {
                        // TODO: Should all existing templates be deleted first?
                        for (ObjectCursor<IndexTemplateMetaData> cursor : metaData.templates().values()) {
                            mdBuilder.put(cursor.value);
                        }
                    }
                    if (metaData.customs() != null) {
                        for (ObjectObjectCursor<String, MetaData.Custom> cursor : metaData.customs()) {
                            if (!RepositoriesMetaData.TYPE.equals(cursor.key)) {
                                // Don't restore repositories while we are working with them
                                // TODO: Should we restore them at the end?
                                mdBuilder.putCustom(cursor.key, cursor.value);
                            }
                        }
                    }
                }
            }

            @Override
            public void onFailure(String source, Exception e) {
                logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to restore snapshot", snapshotId), e);
                listener.onFailure(e);
            }

            @Override
            public TimeValue timeout() {
                return request.masterNodeTimeout();
            }

            @Override
            public void clusterStateProcessed(String source, ClusterState oldState, ClusterState newState) {
                listener.onResponse(new RestoreCompletionResponse(snapshot, restoreInfo));
            }
        });
    } catch (Exception e) {
        logger.warn((Supplier<?>) () -> new ParameterizedMessage("[{}] failed to restore snapshot", request.repositoryName + ":" + request.snapshotName), e);
        listener.onFailure(e);
    }
}

Example 8 with AliasMetaData

use of org.elasticsearch.cluster.metadata.AliasMetaData in project elasticsearch by elastic.

the class SimpleIndexTemplateIT method testMultipleAliasesPrecedence.

public void testMultipleAliasesPrecedence() throws Exception {
    client().admin().indices().preparePutTemplate("template1").setPatterns(Collections.singletonList("*")).setOrder(0).addAlias(new Alias("alias1")).addAlias(new Alias("{index}-alias")).addAlias(new Alias("alias3").filter(QueryBuilders.boolQuery().mustNot(QueryBuilders.existsQuery("test")))).addAlias(new Alias("alias4")).get();
    client().admin().indices().preparePutTemplate("template2").setPatterns(Collections.singletonList("te*")).setOrder(1).addAlias(new Alias("alias1").routing("test")).addAlias(new Alias("alias3")).get();
    assertAcked(prepareCreate("test").addAlias(new Alias("test-alias").searchRouting("test-routing")));
    ensureGreen();
    GetAliasesResponse getAliasesResponse = client().admin().indices().prepareGetAliases().addIndices("test").get();
    assertThat(getAliasesResponse.getAliases().get("test").size(), equalTo(4));
    for (AliasMetaData aliasMetaData : getAliasesResponse.getAliases().get("test")) {
        assertThat(aliasMetaData.alias(), anyOf(equalTo("alias1"), equalTo("test-alias"), equalTo("alias3"), equalTo("alias4")));
        if ("alias1".equals(aliasMetaData.alias())) {
            assertThat(aliasMetaData.indexRouting(), equalTo("test"));
            assertThat(aliasMetaData.searchRouting(), equalTo("test"));
        } else if ("alias3".equals(aliasMetaData.alias())) {
            assertThat(aliasMetaData.filter(), nullValue());
        } else if ("test-alias".equals(aliasMetaData.alias())) {
            assertThat(aliasMetaData.indexRouting(), nullValue());
            assertThat(aliasMetaData.searchRouting(), equalTo("test-routing"));
        }
    }
}

Example 9 with AliasMetaData

use of org.elasticsearch.cluster.metadata.AliasMetaData in project graylog2-server by Graylog2.

the class Indices method getIndexNamesAndAliases.

@NotNull
public Map<String, Set<String>> getIndexNamesAndAliases(String indexPattern) {
    // only request indices matching the name or pattern in `indexPattern` and only get the alias names for each index,
    // not the settings or mappings
    final GetIndexRequestBuilder getIndexRequestBuilder = c.admin().indices().prepareGetIndex();
    getIndexRequestBuilder.addFeatures(GetIndexRequest.Feature.ALIASES);
    getIndexRequestBuilder.setIndices(indexPattern);
    final GetIndexResponse getIndexResponse = c.admin().indices().getIndex(getIndexRequestBuilder.request()).actionGet();
    final String[] indices = getIndexResponse.indices();
    final ImmutableOpenMap<String, List<AliasMetaData>> aliases = getIndexResponse.aliases();
    final Map<String, Set<String>> indexAliases = Maps.newHashMap();
    for (String index : indices) {
        final List<AliasMetaData> aliasMetaData = aliases.get(index);
        if (aliasMetaData == null) {
            indexAliases.put(index, Collections.emptySet());
        } else {
            indexAliases.put(index, aliasMetaData.stream().map(AliasMetaData::alias).collect(toSet()));
        }
    }
    return indexAliases;
}

Example 10 with AliasMetaData

use of org.elasticsearch.cluster.metadata.AliasMetaData in project bw-calendar-engine by Bedework.

the class BwIndexEsImpl method setAlias.

@Override
public int setAlias(final String index, final String alias) throws CalFacadeException {
    // IndicesAliasesResponse resp = null;
    try {
        /* Other is the alias name - index is the index we were just indexing into
       */
        final IndicesAdminClient idx = getAdminIdx();
        final GetAliasesRequestBuilder igarb = idx.prepareGetAliases(alias);
        final ActionFuture<GetAliasesResponse> getAliasesAf = idx.getAliases(igarb.request());
        final GetAliasesResponse garesp = getAliasesAf.actionGet();
        final ImmutableOpenMap<String, List<AliasMetaData>> aliasesmeta = garesp.getAliases();
        final IndicesAliasesRequestBuilder iarb = idx.prepareAliases();
        final Iterator<String> it = aliasesmeta.keysIt();
        while (it.hasNext()) {
            final String indexName = it.next();
            for (final AliasMetaData amd : aliasesmeta.get(indexName)) {
                if (amd.getAlias().equals(alias)) {
                    iarb.removeAlias(indexName, alias);
                }
            }
        }
        iarb.addAlias(index, alias);
        final ActionFuture<IndicesAliasesResponse> af = idx.aliases(iarb.request());
        /*resp = */
        af.actionGet();
        return 0;
    } catch (final ElasticsearchException ese) {
        // Failed somehow
        error(ese);
        return -1;
    } catch (final CalFacadeException cfe) {
        throw cfe;
    } catch (final Throwable t) {
        throw new CalFacadeException(t);
    }
}