public void testMultipleAliasesPrecedence() throws Exception {
client()
.admin()
.indices()
.preparePutTemplate("template1")
.setTemplate("*")
.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")
.setTemplate("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"));
}
}
}
public static void toXContent(
AliasMetaData aliasMetaData, XContentBuilder builder, ToXContent.Params params)
throws IOException {
builder.startObject(aliasMetaData.alias(), XContentBuilder.FieldCaseConversion.NONE);
boolean binary = params.paramAsBoolean("binary", false);
if (aliasMetaData.filter() != null) {
if (binary) {
builder.field("filter", aliasMetaData.filter.compressed());
} else {
byte[] data = aliasMetaData.filter().uncompressed();
XContentParser parser = XContentFactory.xContent(data).createParser(data);
Map<String, Object> filter = parser.mapOrdered();
parser.close();
builder.field("filter", filter);
}
}
if (aliasMetaData.indexRouting() != null) {
builder.field("index_routing", aliasMetaData.indexRouting());
}
if (aliasMetaData.searchRouting() != null) {
builder.field("search_routing", aliasMetaData.searchRouting());
}
builder.endObject();
}
@Test
public void testIndicesAliasesAcknowledgement() {
createIndex("test");
// testing acknowledgement when trying to submit an existing alias too
// in that case it would not make any change, but we are sure about the cluster state
// as the previous operation was acknowledged
for (int i = 0; i < 2; i++) {
assertAcked(client().admin().indices().prepareAliases().addAlias("test", "alias"));
for (Client client : clients()) {
AliasMetaData aliasMetaData =
((AliasOrIndex.Alias)
getLocalClusterState(client).metaData().getAliasAndIndexLookup().get("alias"))
.getFirstAliasMetaData();
assertThat(aliasMetaData.alias(), equalTo("alias"));
}
}
}
public static void writeTo(AliasMetaData aliasMetaData, StreamOutput out) throws IOException {
out.writeString(aliasMetaData.alias());
if (aliasMetaData.filter() != null) {
out.writeBoolean(true);
aliasMetaData.filter.writeTo(out);
} else {
out.writeBoolean(false);
}
if (aliasMetaData.indexRouting() != null) {
out.writeBoolean(true);
out.writeString(aliasMetaData.indexRouting());
} else {
out.writeBoolean(false);
}
if (aliasMetaData.searchRouting() != null) {
out.writeBoolean(true);
out.writeString(aliasMetaData.searchRouting());
} else {
out.writeBoolean(false);
}
}
/**
* 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 ImmutableOpenMap<String, List<AliasMetaData>> findAliases(
final String[] aliases, String[] concreteIndices) {
assert aliases != null;
assert concreteIndices != null;
if (concreteIndices.length == 0) {
return ImmutableOpenMap.of();
}
boolean matchAllAliases = matchAllAliases(aliases);
ImmutableOpenMap.Builder<String, List<AliasMetaData>> mapBuilder = ImmutableOpenMap.builder();
Iterable<String> intersection =
HppcMaps.intersection(ObjectHashSet.from(concreteIndices), indices.keys());
for (String index : intersection) {
IndexMetaData indexMetaData = indices.get(index);
List<AliasMetaData> filteredValues = new ArrayList<>();
for (ObjectCursor<AliasMetaData> cursor : indexMetaData.getAliases().values()) {
AliasMetaData value = cursor.value;
if (matchAllAliases || Regex.simpleMatch(aliases, value.alias())) {
filteredValues.add(value);
}
}
if (!filteredValues.isEmpty()) {
// Make the list order deterministic
CollectionUtil.timSort(
filteredValues,
new Comparator<AliasMetaData>() {
@Override
public int compare(AliasMetaData o1, AliasMetaData o2) {
return o1.alias().compareTo(o2.alias());
}
});
mapBuilder.put(index, Collections.unmodifiableList(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;
}
Iterable<String> intersection =
HppcMaps.intersection(ObjectHashSet.from(concreteIndices), indices.keys());
for (String index : intersection) {
IndexMetaData indexMetaData = indices.get(index);
List<AliasMetaData> filteredValues = new ArrayList<>();
for (ObjectCursor<AliasMetaData> cursor : indexMetaData.getAliases().values()) {
AliasMetaData value = cursor.value;
if (Regex.simpleMatch(aliases, value.alias())) {
filteredValues.add(value);
}
}
if (!filteredValues.isEmpty()) {
return true;
}
}
return false;
}
public Builder putAlias(AliasMetaData aliasMetaData) {
aliases.put(aliasMetaData.alias(), aliasMetaData);
return this;
}
public Builder(AliasMetaData aliasMetaData) {
this(aliasMetaData.alias());
filter = aliasMetaData.filter();
indexRouting = aliasMetaData.indexRouting();
searchRouting = aliasMetaData.searchRouting();
}