public static IndexMetaData fromXContent(XContentParser parser) throws IOException {
if (parser.currentToken() == XContentParser.Token.START_OBJECT) {
parser.nextToken();
}
Builder builder = new Builder(parser.currentName());
String currentFieldName = null;
XContentParser.Token token = parser.nextToken();
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.settings(
ImmutableSettings.settingsBuilder()
.put(SettingsLoader.Helper.loadNestedFromMap(parser.mapOrdered())));
} else if ("mappings".equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
String mappingType = currentFieldName;
Map<String, Object> mappingSource =
MapBuilder.<String, Object>newMapBuilder()
.put(mappingType, parser.mapOrdered())
.map();
builder.putMapping(new MappingMetaData(mappingType, mappingSource));
}
}
} else if ("aliases".equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
builder.putAlias(AliasMetaData.Builder.fromXContent(parser));
}
} else {
// check if its a custom index metadata
Custom.Factory<Custom> factory = lookupFactory(currentFieldName);
if (factory == null) {
// TODO warn
parser.skipChildren();
} else {
builder.putCustom(factory.type(), factory.fromXContent(parser));
}
}
} else if (token == XContentParser.Token.START_ARRAY) {
if ("mappings".equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
if (token == XContentParser.Token.VALUE_EMBEDDED_OBJECT) {
builder.putMapping(new MappingMetaData(new CompressedString(parser.binaryValue())));
} else {
Map<String, Object> mapping = parser.mapOrdered();
if (mapping.size() == 1) {
String mappingType = mapping.keySet().iterator().next();
builder.putMapping(new MappingMetaData(mappingType, mapping));
}
}
}
}
} else if (token.isValue()) {
if ("state".equals(currentFieldName)) {
builder.state(State.fromString(parser.text()));
} else if ("version".equals(currentFieldName)) {
builder.version(parser.longValue());
}
}
}
return builder.build();
}
public static IndexMetaData fromXContent(XContentParser parser) throws IOException {
if (parser.currentToken() == null) { // fresh parser? move to the first token
parser.nextToken();
}
if (parser.currentToken()
== XContentParser.Token.START_OBJECT) { // on a start object move to next token
parser.nextToken();
}
if (parser.currentToken() != XContentParser.Token.FIELD_NAME) {
throw new IllegalArgumentException(
"expected field name but got a " + parser.currentToken());
}
Builder builder = new Builder(parser.currentName());
String currentFieldName = null;
XContentParser.Token token = parser.nextToken();
if (token != XContentParser.Token.START_OBJECT) {
throw new IllegalArgumentException("expected object but got a " + token);
}
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.settings(
Settings.settingsBuilder()
.put(SettingsLoader.Helper.loadNestedFromMap(parser.mapOrdered())));
} else if ("mappings".equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_OBJECT) {
String mappingType = currentFieldName;
Map<String, Object> mappingSource =
MapBuilder.<String, Object>newMapBuilder()
.put(mappingType, parser.mapOrdered())
.map();
builder.putMapping(new MappingMetaData(mappingType, mappingSource));
} else {
throw new IllegalArgumentException("Unexpected token: " + token);
}
}
} else if ("aliases".equals(currentFieldName)) {
while (parser.nextToken() != XContentParser.Token.END_OBJECT) {
builder.putAlias(AliasMetaData.Builder.fromXContent(parser));
}
} else if (KEY_ACTIVE_ALLOCATIONS.equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {
if (token == XContentParser.Token.FIELD_NAME) {
currentFieldName = parser.currentName();
} else if (token == XContentParser.Token.START_ARRAY) {
String shardId = currentFieldName;
Set<String> allocationIds = new HashSet<>();
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
if (token == XContentParser.Token.VALUE_STRING) {
allocationIds.add(parser.text());
}
}
builder.putActiveAllocationIds(Integer.valueOf(shardId), allocationIds);
} else {
throw new IllegalArgumentException("Unexpected token: " + token);
}
}
} else if ("warmers".equals(currentFieldName)) {
// TODO: do this in 4.0:
// throw new IllegalArgumentException("Warmers are not supported anymore - are you
// upgrading from 1.x?");
// ignore: warmers have been removed in 3.0 and are
// simply ignored when upgrading from 2.x
assert Version.CURRENT.major <= 3;
parser.skipChildren();
} else {
// check if its a custom index metadata
Custom proto = lookupPrototype(currentFieldName);
if (proto == null) {
// TODO warn
parser.skipChildren();
} else {
Custom custom = proto.fromXContent(parser);
builder.putCustom(custom.type(), custom);
}
}
} else if (token == XContentParser.Token.START_ARRAY) {
if ("mappings".equals(currentFieldName)) {
while ((token = parser.nextToken()) != XContentParser.Token.END_ARRAY) {
if (token == XContentParser.Token.VALUE_EMBEDDED_OBJECT) {
builder.putMapping(
new MappingMetaData(new CompressedXContent(parser.binaryValue())));
} else {
Map<String, Object> mapping = parser.mapOrdered();
if (mapping.size() == 1) {
String mappingType = mapping.keySet().iterator().next();
builder.putMapping(new MappingMetaData(mappingType, mapping));
}
}
}
} else {
throw new IllegalArgumentException("Unexpected field for an array " + currentFieldName);
}
} else if (token.isValue()) {
if ("state".equals(currentFieldName)) {
builder.state(State.fromString(parser.text()));
} else if ("version".equals(currentFieldName)) {
builder.version(parser.longValue());
} else {
throw new IllegalArgumentException("Unexpected field [" + currentFieldName + "]");
}
} else {
throw new IllegalArgumentException("Unexpected token " + token);
}
}
return builder.build();
}