Method indexCreated

server/src/main/java/org/elasticsearch/Version.java:350–361

Return the Version of Elasticsearch that has been used to create an index given its settings. @throws IllegalStateException if the given index settings doesn't contain a value for the key IndexMetadata#SETTING_VERSION_CREATED

(Settings indexSettings)

     *         {@value IndexMetadata#SETTING_VERSION_CREATED}
     */
    public static Version indexCreated(Settings indexSettings) {
        final Version indexVersion = IndexMetadata.SETTING_INDEX_VERSION_CREATED.get(indexSettings);
        if (indexVersion == V_EMPTY) {
            final String message = String.format(
                    Locale.ROOT,
                    "[%s] is not present in the index settings for index with UUID [%s]",
                    IndexMetadata.SETTING_INDEX_VERSION_CREATED.getKey(),
                    indexSettings.get(IndexMetadata.SETTING_INDEX_UUID));
            throw new IllegalStateException(message);
        }
        return indexVersion;
    }

    public static void writeVersion(Version version, StreamOutput out) throws IOException {
        out.writeVInt(version.internalId);