High Level Rest Client - admin API?

Dan_Markhasin · September 14, 2017, 6:30am

Does the new High Level Rest Client provide an admin API for creating/deleting/updating indices? The documentation indicates that it has no support for admin operations, but I wanted to make sure.

dadoonet · September 14, 2017, 6:44am

No. Not yet. You need to use the Low Level part for this.

Here is an example where I'm actually extending the HL Client and providing my own admin methods (note the getLowLevelClient() call):

github.com

dadoonet/fscrawler/blob/master/src/main/java/fr/pilato/elasticsearch/crawler/fs/client/ElasticsearchClient.java#L82-L105


public void createIndex(String index, boolean ignoreErrors, String indexSettings) throws IOException {
    logger.debug("create index [{}]", index);
    logger.trace("index settings: [{}]", indexSettings);
    try {
        StringEntity entity = null;
        if (!Strings.isNullOrEmpty(indexSettings)) {
            entity = new StringEntity(indexSettings, ContentType.APPLICATION_JSON);
        }
        Response response = getLowLevelClient().performRequest("PUT", "/" + index, Collections.emptyMap(), entity);
        logger.trace("create index response: {}", JsonUtil.asMap(response));
    } catch (ResponseException e) {
        if (e.getResponse().getStatusLine().getStatusCode() == 400 &&
                (e.getMessage().contains("index_already_exists_exception") || // ES 5.x
                        e.getMessage().contains("resource_already_exists_exception") || // ES 6.x
                        e.getMessage().contains("IndexAlreadyExistsException") )) { // ES 1.x and 2.x
            if (!ignoreErrors) {
                throw new RuntimeException("index already exists");
            }
            logger.trace("index already exists. Ignoring error...");
            return;

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It's super basic but is covering my needs.

Dan_Markhasin · September 14, 2017, 7:20am

Thanks David. Is there a plan/schedule to add admin operations to the HL Rest client?
We are currently using the transport client, and certainly want to switch over to the HL Rest Client, but if admin operations are scheduled to be released relatively soon we'll probably prefer waiting for that instead of re-implementing all of them ourselves.

dadoonet · September 14, 2017, 7:54am

I'd not expect something coming "soon".

But @javanna can probably tell more about the plan...

javanna · September 14, 2017, 8:04am

We have no clear plans yet. There are quite some APIs that need to be added. You may want to upvote this issue: https://github.com/elastic/elasticsearch/issues/25847 . Also, PRs are welcome!

Cheers
Luca

Dan_Markhasin · September 14, 2017, 8:06am

When I wrote "soon" I meant something along the ES 6.0 timeline - i.e. near but not immediate future

Anyway, thanks for the responses guys!

system · October 12, 2017, 8:07am

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.

javanna · November 13, 2017, 8:54am

The will be added as we go, I assume as part of the 6.x releases. You can also have a look now at a meta issue that lists all the missing API: https://github.com/elastic/elasticsearch/issues/27205 .

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High Level Rest Client - admin API?

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