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# Elasticsearch Client Service

## Integration Tests

The `nifi-elasticsearch-client-service` component build allows for optional Integration Tests to be executed to verify
additional functionality.

The Integration Tests create an in-memory instance of Elasticsearch, populate it with known data, perform operations
upon the instance and verify the results.

These can be activated by running the following build commands:

### Elasticsearch 5

Test integration with Elasticsearch 5.x:

```bash
mvn -P integration-tests,elasticsearch-oss clean verify
```

### Elasticsearch 6

Test integration with Elasticsearch 6.x:

```bash
mvn -P integration-tests,elasticsearch-oss,elasticsearch-6 clean verify
```

### Elasticsearch 7

[elasticsearch-oss](https://www.elastic.co/downloads/past-releases#elasticsearch-oss) was discontinued after `7.10.2`,
so the use of `elasticsearch-oss` is unnecessary for newer versions.

For 7.x, we have two separate profiles:

1. `elasticsearch-7` that can be used with `oss` (no X-Pack) and `default` (with X-Pack) flavours
2. `elasticsearch-7-no-oss` that can only be used with the `default` flavour (using a newer version of [elasticsearch](https://www.elastic.co/downloads/past-releases#elasticsearch))

#### With X-Pack

Allows for testing of some X-Pack only features such as "Point in Time" querying:

```bash
mvn -P integration-tests,elasticsearch-default,elasticsearch-7 clean verify
sleep 2
mvn -P integration-tests,elasticsearch-default,elasticsearch-7-no-oss clean verify
```

#### Without X-Pack

```bash
mvn -P integration-tests,elasticsearch-oss,elasticsearch-7 clean verify
```

### Elasticsearch 8

Test integration with Elasticsearch 8.x (with X-Pack):

```bash
mvn -P integration-tests,elasticsearch-default,elasticsearch-8 clean verify
```