org.elasticsearch.cluster.metadata.MetaData Maven / Gradle / Ivy
/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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.elasticsearch.cluster.metadata;
import com.google.common.base.Predicate;
import com.google.common.collect.*;
import gnu.trove.set.hash.THashSet;
import org.elasticsearch.ElasticSearchIllegalArgumentException;
import org.elasticsearch.action.support.IgnoreIndices;
import org.elasticsearch.cluster.block.ClusterBlock;
import org.elasticsearch.cluster.block.ClusterBlockLevel;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.collect.MapBuilder;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.regex.Regex;
import org.elasticsearch.common.settings.ImmutableSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.settings.loader.SettingsLoader;
import org.elasticsearch.common.xcontent.*;
import org.elasticsearch.index.Index;
import org.elasticsearch.indices.IndexMissingException;
import org.elasticsearch.rest.RestStatus;
import java.io.IOException;
import java.util.*;
import static com.google.common.collect.Lists.newArrayList;
import static com.google.common.collect.Maps.newHashMap;
import static com.google.common.collect.Sets.newHashSet;
import static org.elasticsearch.common.collect.MapBuilder.newMapBuilder;
import static org.elasticsearch.common.settings.ImmutableSettings.*;
/**
*
*/
public class MetaData implements Iterable {
public interface Custom {
interface Factory {
String type();
T readFrom(StreamInput in) throws IOException;
void writeTo(T customIndexMetaData, StreamOutput out) throws IOException;
T fromXContent(XContentParser parser) throws IOException;
void toXContent(T customIndexMetaData, XContentBuilder builder, ToXContent.Params params);
}
}
public static Map customFactories = new HashMap();
/**
* Register a custom index meta data factory. Make sure to call it from a static block.
*/
public static void registerFactory(String type, Custom.Factory factory) {
customFactories.put(type, factory);
}
@Nullable
public static Custom.Factory lookupFactory(String type) {
return customFactories.get(type);
}
public static Custom.Factory lookupFactorySafe(String type) throws ElasticSearchIllegalArgumentException {
Custom.Factory factory = customFactories.get(type);
if (factory == null) {
throw new ElasticSearchIllegalArgumentException("No custom index metadata factory registered for type [" + type + "]");
}
return factory;
}
public static final String SETTING_READ_ONLY = "cluster.blocks.read_only";
public static final ClusterBlock CLUSTER_READ_ONLY_BLOCK = new ClusterBlock(6, "cluster read-only (api)", false, false, RestStatus.FORBIDDEN, ClusterBlockLevel.WRITE, ClusterBlockLevel.METADATA);
public static final MetaData EMPTY_META_DATA = newMetaDataBuilder().build();
private final long version;
private final Settings transientSettings;
private final Settings persistentSettings;
private final Settings settings;
private final ImmutableMap indices;
private final ImmutableMap templates;
private final ImmutableMap customs;
private final transient int totalNumberOfShards; // Transient ? not serializable anyway?
private final int numberOfShards;
private final String[] allIndices;
private final ImmutableSet allIndicesSet;
private final String[] allOpenIndices;
private final ImmutableMap> aliases;
private final ImmutableMap>> aliasToIndexToSearchRoutingMap;
// This map indicates if an alias associated with an index is filtering alias
private final ImmutableMap> indexToAliasFilteringRequiredMap;
private final ImmutableMap aliasAndIndexToIndexMap;
MetaData(long version, Settings transientSettings, Settings persistentSettings, ImmutableMap indices, ImmutableMap templates, ImmutableMap customs) {
this.version = version;
this.transientSettings = transientSettings;
this.persistentSettings = persistentSettings;
this.settings = ImmutableSettings.settingsBuilder().put(persistentSettings).put(transientSettings).build();
this.indices = ImmutableMap.copyOf(indices);
this.customs = customs;
this.templates = templates;
int totalNumberOfShards = 0;
int numberOfShards = 0;
for (IndexMetaData indexMetaData : indices.values()) {
totalNumberOfShards += indexMetaData.totalNumberOfShards();
numberOfShards += indexMetaData.numberOfShards();
}
this.totalNumberOfShards = totalNumberOfShards;
this.numberOfShards = numberOfShards;
// build all indices map
List allIndicesLst = Lists.newArrayList();
for (IndexMetaData indexMetaData : indices.values()) {
allIndicesLst.add(indexMetaData.index());
}
allIndices = allIndicesLst.toArray(new String[allIndicesLst.size()]);
allIndicesSet = ImmutableSet.copyOf(allIndices);
List allOpenIndices = Lists.newArrayList();
for (IndexMetaData indexMetaData : indices.values()) {
if (indexMetaData.state() == IndexMetaData.State.OPEN) {
allOpenIndices.add(indexMetaData.index());
}
}
this.allOpenIndices = allOpenIndices.toArray(new String[allOpenIndices.size()]);
// build aliases map
MapBuilder> tmpAliasesMap = newMapBuilder();
for (IndexMetaData indexMetaData : indices.values()) {
String index = indexMetaData.index();
for (AliasMetaData aliasMd : indexMetaData.aliases().values()) {
MapBuilder indexAliasMap = tmpAliasesMap.get(aliasMd.alias());
if (indexAliasMap == null) {
indexAliasMap = newMapBuilder();
tmpAliasesMap.put(aliasMd.alias(), indexAliasMap);
}
indexAliasMap.put(index, aliasMd);
}
}
MapBuilder> aliases = newMapBuilder();
for (Map.Entry> alias : tmpAliasesMap.map().entrySet()) {
aliases.put(alias.getKey(), alias.getValue().immutableMap());
}
this.aliases = aliases.immutableMap();
// build routing aliases set
MapBuilder>> tmpAliasToIndexToSearchRoutingMap = newMapBuilder();
for (IndexMetaData indexMetaData : indices.values()) {
for (AliasMetaData aliasMd : indexMetaData.aliases().values()) {
MapBuilder> indexToSearchRoutingMap = tmpAliasToIndexToSearchRoutingMap.get(aliasMd.alias());
if (indexToSearchRoutingMap == null) {
indexToSearchRoutingMap = newMapBuilder();
tmpAliasToIndexToSearchRoutingMap.put(aliasMd.alias(), indexToSearchRoutingMap);
}
if (aliasMd.searchRouting() != null) {
indexToSearchRoutingMap.put(indexMetaData.index(), ImmutableSet.copyOf(Strings.splitStringByCommaToSet(aliasMd.searchRouting())));
} else {
indexToSearchRoutingMap.put(indexMetaData.index(), ImmutableSet.of());
}
}
}
MapBuilder>> aliasToIndexToSearchRoutingMap = newMapBuilder();
for (Map.Entry>> alias : tmpAliasToIndexToSearchRoutingMap.map().entrySet()) {
aliasToIndexToSearchRoutingMap.put(alias.getKey(), alias.getValue().immutableMap());
}
this.aliasToIndexToSearchRoutingMap = aliasToIndexToSearchRoutingMap.immutableMap();
// build filtering required map
MapBuilder> filteringRequiredMap = newMapBuilder();
for (IndexMetaData indexMetaData : indices.values()) {
MapBuilder indexFilteringRequiredMap = newMapBuilder();
// Filtering is not required for the index itself
indexFilteringRequiredMap.put(indexMetaData.index(), false);
for (AliasMetaData aliasMetaData : indexMetaData.aliases().values()) {
if (aliasMetaData.filter() != null) {
indexFilteringRequiredMap.put(aliasMetaData.alias(), true);
} else {
indexFilteringRequiredMap.put(aliasMetaData.alias(), false);
}
}
filteringRequiredMap.put(indexMetaData.index(), indexFilteringRequiredMap.immutableMap());
}
indexToAliasFilteringRequiredMap = filteringRequiredMap.immutableMap();
// build aliasAndIndex to Index map
MapBuilder> tmpAliasAndIndexToIndexBuilder = newMapBuilder();
for (IndexMetaData indexMetaData : indices.values()) {
Set lst = tmpAliasAndIndexToIndexBuilder.get(indexMetaData.index());
if (lst == null) {
lst = newHashSet();
tmpAliasAndIndexToIndexBuilder.put(indexMetaData.index(), lst);
}
lst.add(indexMetaData.index());
for (String alias : indexMetaData.aliases().keySet()) {
lst = tmpAliasAndIndexToIndexBuilder.get(alias);
if (lst == null) {
lst = newHashSet();
tmpAliasAndIndexToIndexBuilder.put(alias, lst);
}
lst.add(indexMetaData.index());
}
}
MapBuilder aliasAndIndexToIndexBuilder = newMapBuilder();
for (Map.Entry> entry : tmpAliasAndIndexToIndexBuilder.map().entrySet()) {
aliasAndIndexToIndexBuilder.put(entry.getKey(), entry.getValue().toArray(new String[entry.getValue().size()]));
}
this.aliasAndIndexToIndexMap = aliasAndIndexToIndexBuilder.immutableMap();
}
public long version() {
return this.version;
}
/**
* Returns the merges transient and persistent settings.
*/
public Settings settings() {
return this.settings;
}
public Settings transientSettings() {
return this.transientSettings;
}
public Settings persistentSettings() {
return this.persistentSettings;
}
public ImmutableMap> aliases() {
return this.aliases;
}
public ImmutableMap> getAliases() {
return aliases();
}
/**
* Finds the specific index aliases that match with the specified aliases directly or partially via wildcards and
* that point to the specified concrete indices or match partially with the indices via wildcards.
*
* @param aliases The names of the index aliases to find
* @param concreteIndices The concrete indexes the index aliases must point to order to be returned.
*
* @return the found index aliases grouped by index
*/
public ImmutableMap> findAliases(final String[] aliases, String[] concreteIndices) {
assert aliases != null;
assert concreteIndices != null;
if (concreteIndices.length == 0) {
return ImmutableMap.of();
}
ImmutableMap.Builder> mapBuilder = ImmutableMap.builder();
Sets.SetView intersection = Sets.intersection(Sets.newHashSet(concreteIndices), indices.keySet());
for (String index : intersection) {
IndexMetaData indexMetaData = indices.get(index);
Collection filteredValues = Maps.filterKeys(indexMetaData.getAliases(), new Predicate() {
public boolean apply(String alias) {
// Simon says: we could build and FST out of the alias key and then run a regexp query against it ;)
return Regex.simpleMatch(aliases, alias);
}
}).values();
if (!filteredValues.isEmpty()) {
mapBuilder.put(index, ImmutableList.copyOf(filteredValues));
}
}
return mapBuilder.build();
}
/**
* Checks if at least one of the specified aliases exists in the specified concrete indices. Wildcards are supported in the
* alias names for partial matches.
*
* @param aliases The names of the index aliases to find
* @param concreteIndices The concrete indexes the index aliases must point to order to be returned.
*
* @return whether at least one of the specified aliases exists in one of the specified concrete indices.
*/
public boolean hasAliases(final String[] aliases, String[] concreteIndices) {
assert aliases != null;
assert concreteIndices != null;
if (concreteIndices.length == 0) {
return false;
}
Sets.SetView intersection = Sets.intersection(Sets.newHashSet(concreteIndices), indices.keySet());
for (String index : intersection) {
IndexMetaData indexMetaData = indices.get(index);
Collection filteredValues = Maps.filterKeys(indexMetaData.getAliases(), new Predicate() {
public boolean apply(String alias) {
return Regex.simpleMatch(aliases, alias);
}
}).values();
if (!filteredValues.isEmpty()) {
return true;
}
}
return false;
}
/**
* Returns all the concrete indices.
*/
public String[] concreteAllIndices() {
return allIndices;
}
public ImmutableSet concreteAllIndicesAsSet() {
return allIndicesSet;
}
public String[] getConcreteAllIndices() {
return concreteAllIndices();
}
public String[] concreteAllOpenIndices() {
return allOpenIndices;
}
public String[] getConcreteAllOpenIndices() {
return allOpenIndices;
}
/**
* Returns indexing routing for the given index.
*/
public String resolveIndexRouting(@Nullable String routing, String aliasOrIndex) {
// Check if index is specified by an alias
ImmutableMap indexAliases = aliases.get(aliasOrIndex);
if (indexAliases == null || indexAliases.isEmpty()) {
return routing;
}
if (indexAliases.size() > 1) {
throw new ElasticSearchIllegalArgumentException("Alias [" + aliasOrIndex + "] has more than one index associated with it [" + indexAliases.keySet() + "], can't execute a single index op");
}
AliasMetaData aliasMd = indexAliases.values().iterator().next();
if (aliasMd.indexRouting() != null) {
if (routing != null) {
if (!routing.equals(aliasMd.indexRouting())) {
throw new ElasticSearchIllegalArgumentException("Alias [" + aliasOrIndex + "] has index routing associated with it [" + aliasMd.indexRouting() + "], and was provided with routing value [" + routing + "], rejecting operation");
}
}
routing = aliasMd.indexRouting();
}
if (routing != null) {
if (routing.indexOf(',') != -1) {
throw new ElasticSearchIllegalArgumentException("index/alias [" + aliasOrIndex + "] provided with routing value [" + routing + "] that resolved to several routing values, rejecting operation");
}
}
return routing;
}
public Map> resolveSearchRouting(@Nullable String routing, String aliasOrIndex) {
return resolveSearchRouting(routing, convertFromWildcards(new String[]{aliasOrIndex}, true, IgnoreIndices.MISSING));
}
public Map> resolveSearchRouting(@Nullable String routing, String[] aliasesOrIndices) {
if (isAllIndices(aliasesOrIndices)) {
return resolveSearchRoutingAllIndices(routing);
}
aliasesOrIndices = convertFromWildcards(aliasesOrIndices, true, IgnoreIndices.MISSING);
if (aliasesOrIndices.length == 1) {
return resolveSearchRoutingSingleValue(routing, aliasesOrIndices[0]);
}
Map> routings = null;
Set paramRouting = null;
// List of indices that don't require any routing
Set norouting = new THashSet();
if (routing != null) {
paramRouting = Strings.splitStringByCommaToSet(routing);
}
for (String aliasOrIndex : aliasesOrIndices) {
ImmutableMap> indexToRoutingMap = aliasToIndexToSearchRoutingMap.get(aliasOrIndex);
if (indexToRoutingMap != null && !indexToRoutingMap.isEmpty()) {
for (Map.Entry> indexRouting : indexToRoutingMap.entrySet()) {
if (!norouting.contains(indexRouting.getKey())) {
if (!indexRouting.getValue().isEmpty()) {
// Routing alias
if (routings == null) {
routings = newHashMap();
}
Set r = routings.get(indexRouting.getKey());
if (r == null) {
r = new THashSet();
routings.put(indexRouting.getKey(), r);
}
r.addAll(indexRouting.getValue());
if (paramRouting != null) {
r.retainAll(paramRouting);
}
if (r.isEmpty()) {
routings.remove(indexRouting.getKey());
}
} else {
// Non-routing alias
if (!norouting.contains(indexRouting.getKey())) {
norouting.add(indexRouting.getKey());
if (paramRouting != null) {
Set r = new THashSet(paramRouting);
if (routings == null) {
routings = newHashMap();
}
routings.put(indexRouting.getKey(), r);
} else {
if (routings != null) {
routings.remove(indexRouting.getKey());
}
}
}
}
}
}
} else {
// Index
if (!norouting.contains(aliasOrIndex)) {
norouting.add(aliasOrIndex);
if (paramRouting != null) {
Set r = new THashSet(paramRouting);
if (routings == null) {
routings = newHashMap();
}
routings.put(aliasOrIndex, r);
} else {
if (routings != null) {
routings.remove(aliasOrIndex);
}
}
}
}
}
if (routings == null || routings.isEmpty()) {
return null;
}
return routings;
}
private Map> resolveSearchRoutingSingleValue(@Nullable String routing, String aliasOrIndex) {
Map> routings = null;
Set paramRouting = null;
if (routing != null) {
paramRouting = Strings.splitStringByCommaToSet(routing);
}
ImmutableMap> indexToRoutingMap = aliasToIndexToSearchRoutingMap.get(aliasOrIndex);
if (indexToRoutingMap != null && !indexToRoutingMap.isEmpty()) {
// It's an alias
for (Map.Entry> indexRouting : indexToRoutingMap.entrySet()) {
if (!indexRouting.getValue().isEmpty()) {
// Routing alias
Set r = new THashSet(indexRouting.getValue());
if (paramRouting != null) {
r.retainAll(paramRouting);
}
if (!r.isEmpty()) {
if (routings == null) {
routings = newHashMap();
}
routings.put(indexRouting.getKey(), r);
}
} else {
// Non-routing alias
if (paramRouting != null) {
Set r = new THashSet(paramRouting);
if (routings == null) {
routings = newHashMap();
}
routings.put(indexRouting.getKey(), r);
}
}
}
} else {
// It's an index
if (paramRouting != null) {
routings = ImmutableMap.of(aliasOrIndex, paramRouting);
}
}
return routings;
}
/**
* Sets the same routing for all indices
*/
private Map> resolveSearchRoutingAllIndices(String routing) {
if (routing != null) {
Set r = Strings.splitStringByCommaToSet(routing);
Map> routings = newHashMap();
String[] concreteIndices = concreteAllIndices();
for (String index : concreteIndices) {
routings.put(index, r);
}
return routings;
}
return null;
}
/**
* Translates the provided indices (possibly aliased) into actual indices.
*/
public String[] concreteIndices(String[] indices) throws IndexMissingException {
return concreteIndices(indices, IgnoreIndices.NONE, false);
}
/**
* Translates the provided indices (possibly aliased) into actual indices.
*/
public String[] concreteIndicesIgnoreMissing(String[] indices) {
return concreteIndices(indices, IgnoreIndices.MISSING, false);
}
/**
* Translates the provided indices (possibly aliased) into actual indices.
*/
public String[] concreteIndices(String[] aliasesOrIndices, IgnoreIndices ignoreIndices, boolean allOnlyOpen) throws IndexMissingException {
if (isAllIndices(aliasesOrIndices)) {
return allOnlyOpen ? concreteAllOpenIndices() : concreteAllIndices();
}
aliasesOrIndices = convertFromWildcards(aliasesOrIndices, allOnlyOpen, ignoreIndices);
// optimize for single element index (common case)
if (aliasesOrIndices.length == 1) {
String aliasOrIndex = aliasesOrIndices[0];
// if a direct index name, just return the array provided
if (this.indices.containsKey(aliasOrIndex)) {
return aliasesOrIndices;
}
String[] actualLst = aliasAndIndexToIndexMap.get(aliasOrIndex);
if (actualLst == null) {
throw new IndexMissingException(new Index(aliasOrIndex));
} else {
return actualLst;
}
}
// check if its a possible aliased index, if not, just return the
// passed array
boolean possiblyAliased = false;
for (String index : aliasesOrIndices) {
if (!this.indices.containsKey(index)) {
possiblyAliased = true;
break;
}
}
if (!possiblyAliased) {
return aliasesOrIndices;
}
Set actualIndices = new THashSet();
for (String index : aliasesOrIndices) {
String[] actualLst = aliasAndIndexToIndexMap.get(index);
if (actualLst == null) {
if (ignoreIndices != IgnoreIndices.MISSING) {
throw new IndexMissingException(new Index(index));
}
} else {
for (String x : actualLst) {
actualIndices.add(x);
}
}
}
if (actualIndices.isEmpty()) {
throw new IndexMissingException(new Index(Arrays.toString(aliasesOrIndices)));
}
return actualIndices.toArray(new String[actualIndices.size()]);
}
public String concreteIndex(String index) throws IndexMissingException, ElasticSearchIllegalArgumentException {
// a quick check, if this is an actual index, if so, return it
if (indices.containsKey(index)) {
return index;
}
// not an actual index, fetch from an alias
String[] lst = aliasAndIndexToIndexMap.get(index);
if (lst == null) {
throw new IndexMissingException(new Index(index));
}
if (lst.length > 1) {
throw new ElasticSearchIllegalArgumentException("Alias [" + index + "] has more than one indices associated with it [" + Arrays.toString(lst) + "], can't execute a single index op");
}
return lst[0];
}
public String[] convertFromWildcards(String[] aliasesOrIndices, boolean wildcardOnlyOpen, IgnoreIndices ignoreIndices) {
Set result = null;
for (int i = 0; i < aliasesOrIndices.length; i++) {
String aliasOrIndex = aliasesOrIndices[i];
if (aliasAndIndexToIndexMap.containsKey(aliasOrIndex)) {
if (result != null) {
result.add(aliasOrIndex);
}
continue;
}
boolean add = true;
if (aliasOrIndex.charAt(0) == '+') {
add = true;
aliasOrIndex = aliasOrIndex.substring(1);
} else if (aliasOrIndex.charAt(0) == '-') {
// if its the first, fill it with all the indices...
if (i == 0) {
result = new THashSet(Arrays.asList(wildcardOnlyOpen ? concreteAllOpenIndices() : concreteAllIndices()));
}
add = false;
aliasOrIndex = aliasOrIndex.substring(1);
}
if (!Regex.isSimpleMatchPattern(aliasOrIndex)) {
if (ignoreIndices != IgnoreIndices.MISSING && !aliasAndIndexToIndexMap.containsKey(aliasOrIndex)) {
throw new IndexMissingException(new Index(aliasOrIndex));
}
if (result != null) {
if (add) {
result.add(aliasOrIndex);
} else {
result.remove(aliasOrIndex);
}
}
continue;
}
if (result == null) {
// add all the previous ones...
result = new THashSet();
result.addAll(Arrays.asList(aliasesOrIndices).subList(0, i));
}
String[] indices = wildcardOnlyOpen ? concreteAllOpenIndices() : concreteAllIndices();
boolean found = false;
for (String index : indices) {
if (Regex.simpleMatch(aliasOrIndex, index)) {
found = true;
if (add) {
result.add(index);
} else {
result.remove(index);
}
}
}
for (String alias : aliases.keySet()) {
if (Regex.simpleMatch(aliasOrIndex, alias)) {
found = true;
if (add) {
result.add(alias);
} else {
result.remove(alias);
}
}
}
if (!found && ignoreIndices != IgnoreIndices.MISSING) {
throw new IndexMissingException(new Index(aliasOrIndex));
}
}
if (result == null) {
return aliasesOrIndices;
}
return result.toArray(new String[result.size()]);
}
public boolean hasIndex(String index) {
return indices.containsKey(index);
}
public boolean hasConcreteIndex(String index) {
return aliasAndIndexToIndexMap.containsKey(index);
}
public IndexMetaData index(String index) {
return indices.get(index);
}
public ImmutableMap indices() {
return this.indices;
}
public ImmutableMap getIndices() {
return indices();
}
public ImmutableMap templates() {
return this.templates;
}
public ImmutableMap getTemplates() {
return this.templates;
}
public ImmutableMap customs() {
return this.customs;
}
public ImmutableMap getCustoms() {
return this.customs;
}
public int totalNumberOfShards() {
return this.totalNumberOfShards;
}
public int getTotalNumberOfShards() {
return totalNumberOfShards();
}
public int numberOfShards() {
return this.numberOfShards;
}
public int getNumberOfShards() {
return numberOfShards();
}
/**
* Iterates through the list of indices and selects the effective list of filtering aliases for the
* given index.
*
* Only aliases with filters are returned. If the indices list contains a non-filtering reference to
* the index itself - null is returned. Returns null if no filtering is required.
*/
public String[] filteringAliases(String index, String... indices) {
if (isAllIndices(indices)) {
return null;
}
// optimize for the most common single index/alias scenario
if (indices.length == 1) {
String alias = indices[0];
ImmutableMap aliasToFilteringRequiredMap = indexToAliasFilteringRequiredMap.get(index);
if (aliasToFilteringRequiredMap == null) {
// Shouldn't happen
throw new IndexMissingException(new Index(index));
}
Boolean filteringRequired = aliasToFilteringRequiredMap.get(alias);
if (filteringRequired == null || !filteringRequired) {
return null;
}
return new String[]{alias};
}
List filteringAliases = null;
for (String alias : indices) {
ImmutableMap aliasToFilteringRequiredMap = indexToAliasFilteringRequiredMap.get(index);
if (aliasToFilteringRequiredMap == null) {
// Shouldn't happen
throw new IndexMissingException(new Index(index));
}
Boolean filteringRequired = aliasToFilteringRequiredMap.get(alias);
// Check that this is an alias for the current index
// Otherwise - skip it
if (filteringRequired != null) {
if (filteringRequired) {
// If filtering required - add it to the list of filters
if (filteringAliases == null) {
filteringAliases = newArrayList();
}
filteringAliases.add(alias);
} else {
// If not, we have a non filtering alias for this index - no filtering needed
return null;
}
}
}
if (filteringAliases == null) {
return null;
}
return filteringAliases.toArray(new String[filteringAliases.size()]);
}
private boolean isAllIndices(String[] aliasesOrIndices) {
return (aliasesOrIndices == null || aliasesOrIndices.length == 0 || (aliasesOrIndices.length == 1 && "_all".equals(aliasesOrIndices[0])));
}
@Override
public UnmodifiableIterator iterator() {
return indices.values().iterator();
}
public static boolean isGlobalStateEquals(MetaData metaData1, MetaData metaData2) {
if (!metaData1.persistentSettings.equals(metaData2.persistentSettings)) return false;
if (!metaData1.templates.equals(metaData2.templates())) return false;
return true;
}
public static Builder builder() {
return new Builder();
}
public static Builder newMetaDataBuilder() {
return new Builder();
}
public static class Builder {
private long version;
private Settings transientSettings = ImmutableSettings.Builder.EMPTY_SETTINGS;
private Settings persistentSettings = ImmutableSettings.Builder.EMPTY_SETTINGS;
private MapBuilder indices = newMapBuilder();
private MapBuilder templates = newMapBuilder();
private MapBuilder customs = newMapBuilder();
public Builder metaData(MetaData metaData) {
this.transientSettings = metaData.transientSettings;
this.persistentSettings = metaData.persistentSettings;
this.version = metaData.version;
this.indices.putAll(metaData.indices);
this.templates.putAll(metaData.templates);
this.customs.putAll(metaData.customs);
return this;
}
public Builder put(IndexMetaData.Builder indexMetaDataBuilder) {
// we know its a new one, increment the version and store
indexMetaDataBuilder.version(indexMetaDataBuilder.version() + 1);
IndexMetaData indexMetaData = indexMetaDataBuilder.build();
indices.put(indexMetaData.index(), indexMetaData);
return this;
}
public Builder put(IndexMetaData indexMetaData, boolean incrementVersion) {
if (indices.get(indexMetaData.index()) == indexMetaData) {
return this;
}
// if we put a new index metadata, increment its version
if (incrementVersion) {
indexMetaData = IndexMetaData.newIndexMetaDataBuilder(indexMetaData).version(indexMetaData.version() + 1).build();
}
indices.put(indexMetaData.index(), indexMetaData);
return this;
}
public IndexMetaData get(String index) {
return indices.get(index);
}
public Builder remove(String index) {
indices.remove(index);
return this;
}
public Builder removeAllIndices() {
indices.clear();
return this;
}
public Builder put(IndexTemplateMetaData.Builder template) {
return put(template.build());
}
public Builder put(IndexTemplateMetaData template) {
templates.put(template.name(), template);
return this;
}
public Builder removeTemplate(String templateName) {
templates.remove(templateName);
return this;
}
public Custom getCustom(String type) {
return customs.get(type);
}
public Builder putCustom(String type, Custom custom) {
customs.put(type, custom);
return this;
}
public Builder removeCustom(String type) {
customs.remove(type);
return this;
}
public Builder updateSettings(Settings settings, String... indices) {
if (indices == null || indices.length == 0) {
indices = this.indices.map().keySet().toArray(new String[this.indices.map().keySet().size()]);
}
for (String index : indices) {
IndexMetaData indexMetaData = this.indices.get(index);
if (indexMetaData == null) {
throw new IndexMissingException(new Index(index));
}
put(IndexMetaData.newIndexMetaDataBuilder(indexMetaData)
.settings(settingsBuilder().put(indexMetaData.settings()).put(settings)));
}
return this;
}
public Builder updateNumberOfReplicas(int numberOfReplicas, String... indices) {
if (indices == null || indices.length == 0) {
indices = this.indices.map().keySet().toArray(new String[this.indices.map().keySet().size()]);
}
for (String index : indices) {
IndexMetaData indexMetaData = this.indices.get(index);
if (indexMetaData == null) {
throw new IndexMissingException(new Index(index));
}
put(IndexMetaData.newIndexMetaDataBuilder(indexMetaData).numberOfReplicas(numberOfReplicas));
}
return this;
}
public Settings transientSettings() {
return this.transientSettings;
}
public Builder transientSettings(Settings settings) {
this.transientSettings = settings;
return this;
}
public Settings persistentSettings() {
return this.persistentSettings;
}
public Builder persistentSettings(Settings settings) {
this.persistentSettings = settings;
return this;
}
public Builder version(long version) {
this.version = version;
return this;
}
public MetaData build() {
return new MetaData(version, transientSettings, persistentSettings, indices.immutableMap(), templates.immutableMap(), customs.immutableMap());
}
public static String toXContent(MetaData metaData) throws IOException {
XContentBuilder builder = XContentFactory.contentBuilder(XContentType.JSON);
builder.startObject();
toXContent(metaData, builder, ToXContent.EMPTY_PARAMS);
builder.endObject();
return builder.string();
}
public static void toXContent(MetaData metaData, XContentBuilder builder, ToXContent.Params params) throws IOException {
builder.startObject("meta-data");
builder.field("version", metaData.version());
if (!metaData.persistentSettings().getAsMap().isEmpty()) {
builder.startObject("settings");
for (Map.Entry entry : metaData.persistentSettings().getAsMap().entrySet()) {
builder.field(entry.getKey(), entry.getValue());
}
builder.endObject();
}
builder.startObject("templates");
for (IndexTemplateMetaData template : metaData.templates().values()) {
IndexTemplateMetaData.Builder.toXContent(template, builder, params);
}
builder.endObject();
if (!metaData.indices().isEmpty()) {
builder.startObject("indices");
for (IndexMetaData indexMetaData : metaData) {
IndexMetaData.Builder.toXContent(indexMetaData, builder, params);
}
builder.endObject();
}
for (Map.Entry entry : metaData.customs().entrySet()) {
builder.startObject(entry.getKey());
lookupFactorySafe(entry.getKey()).toXContent(entry.getValue(), builder, params);
builder.endObject();
}
builder.endObject();
}
public static MetaData fromXContent(XContentParser parser) throws IOException {
Builder builder = new Builder();
// we might get here after the meta-data element, or on a fresh parser
XContentParser.Token token = parser.currentToken();
String currentFieldName = parser.currentName();
if (!"meta-data".equals(currentFieldName)) {
token = parser.nextToken();
if (token == XContentParser.Token.START_OBJECT) {
// move to the field name (meta-data)
token = parser.nextToken();
// move to the next object
token = parser.nextToken();
}
currentFieldName = parser.currentName();
if (token == null) {
// no data...
return builder.build();
}
}
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
if ("settings".equals(currentFieldName)) {
builder.persistentSettings(ImmutableSettings.settingsBuilder().put(SettingsLoader.Helper.loadNestedFromMap(parser.mapOrdered())).build());
} else if ("indices".equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
builder.put(IndexMetaData.Builder.fromXContent(parser), false);
}
} else if ("templates".equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
builder.put(IndexTemplateMetaData.Builder.fromXContent(parser));
}
} else {
// check if its a custom index metadata
Custom.Factory factory = lookupFactory(currentFieldName);
if (factory == null) {
//TODO warn
parser.skipChildren();
} else {
builder.putCustom(factory.type(), factory.fromXContent(parser));
}
}
} else if (token.isValue()) {
if ("version".equals(currentFieldName)) {
builder.version = parser.longValue();
}
}
}
return builder.build();
}
public static MetaData readFrom(StreamInput in) throws IOException {
Builder builder = new Builder();
builder.version = in.readLong();
builder.transientSettings(readSettingsFromStream(in));
builder.persistentSettings(readSettingsFromStream(in));
int size = in.readVInt();
for (int i = 0; i < size; i++) {
builder.put(IndexMetaData.Builder.readFrom(in), false);
}
size = in.readVInt();
for (int i = 0; i < size; i++) {
builder.put(IndexTemplateMetaData.Builder.readFrom(in));
}
int customSize = in.readVInt();
for (int i = 0; i < customSize; i++) {
String type = in.readString();
Custom customIndexMetaData = lookupFactorySafe(type).readFrom(in);
builder.putCustom(type, customIndexMetaData);
}
return builder.build();
}
public static void writeTo(MetaData metaData, StreamOutput out) throws IOException {
out.writeLong(metaData.version);
writeSettingsToStream(metaData.transientSettings(), out);
writeSettingsToStream(metaData.persistentSettings(), out);
out.writeVInt(metaData.indices.size());
for (IndexMetaData indexMetaData : metaData) {
IndexMetaData.Builder.writeTo(indexMetaData, out);
}
out.writeVInt(metaData.templates.size());
for (IndexTemplateMetaData template : metaData.templates.values()) {
IndexTemplateMetaData.Builder.writeTo(template, out);
}
out.writeVInt(metaData.customs().size());
for (Map.Entry entry : metaData.customs().entrySet()) {
out.writeString(entry.getKey());
lookupFactorySafe(entry.getKey()).writeTo(entry.getValue(), out);
}
}
}
}