@Override
public ClusterState execute(ClusterState currentState) throws Exception {
if (cancellableThreads.isCancelled()
== false) { // no need to run this if recovery is canceled
IndexMetaData indexMetaData =
clusterService.state().metaData().getIndices().get(indexService.index().getName());
ImmutableOpenMap<String, MappingMetaData> metaDataMappings = null;
if (indexMetaData != null) {
metaDataMappings = indexMetaData.getMappings();
}
// default mapping should not be sent back, it can only be updated by put mapping API, and
// its
// a full in place replace, we don't want to override a potential update coming into it
for (DocumentMapper documentMapper : indexService.mapperService().docMappers(false)) {
MappingMetaData mappingMetaData =
metaDataMappings == null ? null : metaDataMappings.get(documentMapper.type());
if (mappingMetaData == null
|| !documentMapper.refreshSource().equals(mappingMetaData.source())) {
// not on master yet in the right form
documentMappersToUpdate.add(documentMapper);
}
}
}
return currentState;
}
@NotNull
protected EsMapping readMapping() {
try {
try {
IndexMetaData indexMetaData = getIndexMetaData();
if (indexMetaData != null) {
MappingMetaData metaData = indexMetaData.mapping(getIndexName());
if (metaData != null) {
byte[] mappingSource = metaData.source().uncompressed();
return new EsMapping(getIndexName(), mappingSource);
}
}
mappingCreated = false;
return new EsMapping(getIndexName());
} catch (IndexMissingException e) {
mappingCreated = false;
return new EsMapping(getIndexName());
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private void applyMappings(ClusterChangedEvent event) {
// go over and update mappings
for (IndexMetaData indexMetaData : event.state().metaData()) {
if (!indicesService.hasIndex(indexMetaData.index())) {
// we only create / update here
continue;
}
List<String> typesToRefresh = Lists.newArrayList();
String index = indexMetaData.index();
IndexService indexService = indicesService.indexService(index);
if (indexService == null) {
// got deleted on us, ignore (closing the node)
return;
}
try {
MapperService mapperService = indexService.mapperService();
// first, go over and update the _default_ mapping (if exists)
if (indexMetaData.mappings().containsKey(MapperService.DEFAULT_MAPPING)) {
boolean requireRefresh =
processMapping(
index,
mapperService,
MapperService.DEFAULT_MAPPING,
indexMetaData.mapping(MapperService.DEFAULT_MAPPING).source());
if (requireRefresh) {
typesToRefresh.add(MapperService.DEFAULT_MAPPING);
}
}
// go over and add the relevant mappings (or update them)
for (ObjectCursor<MappingMetaData> cursor : indexMetaData.mappings().values()) {
MappingMetaData mappingMd = cursor.value;
String mappingType = mappingMd.type();
CompressedXContent mappingSource = mappingMd.source();
if (mappingType.equals(MapperService.DEFAULT_MAPPING)) { // we processed _default_ first
continue;
}
boolean requireRefresh = processMapping(index, mapperService, mappingType, mappingSource);
if (requireRefresh) {
typesToRefresh.add(mappingType);
}
}
if (!typesToRefresh.isEmpty() && sendRefreshMapping) {
nodeMappingRefreshAction.nodeMappingRefresh(
event.state(),
new NodeMappingRefreshAction.NodeMappingRefreshRequest(
index,
indexMetaData.indexUUID(),
typesToRefresh.toArray(new String[typesToRefresh.size()]),
event.state().nodes().localNodeId()));
}
} catch (Throwable t) {
// if we failed the mappings anywhere, we need to fail the shards for this index, note, we
// safeguard
// by creating the processing the mappings on the master, or on the node the mapping was
// introduced on,
// so this failure typically means wrong node level configuration or something similar
for (IndexShard indexShard : indexService) {
ShardRouting shardRouting = indexShard.routingEntry();
failAndRemoveShard(shardRouting, indexService, true, "failed to update mappings", t);
}
}
}
}