155 lines
5.4 KiB
Markdown
155 lines
5.4 KiB
Markdown
---
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layout: default
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title: Date index name
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parent: Ingest processors
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nav_order: 55
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---
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# Date index name processor
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The `date_index_name` processor is used to point documents to the correct time-based index based on the date or timestamp field within the document. The processor sets the `_index` metadata field to a [date math]({{site.url}}{{site.baseurl}}/field-types/supported-field-types/date/#date-math) index name expression. Then the processor fetches the date or timestamp from the `field` field in the document being processed and formats it into a date math index name expression. The extracted date, `index_name_prefix` value, and `date_rounding` value are then combined to create the date math index expression. For example, if the `field` field contains the value `2023-10-30T12:43:29.000Z` and `index_name_prefix` is set to `week_index-` and `date_rounding` is set to `w`, then the date math index name expression is `week_index-2023-10-30`. You can use the `date_formats` field to specify how the date in the date math index expression should be formatted.
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The following is the syntax for the `date_index_name` processor:
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```json
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{
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"date_index_name": {
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"field": "your_date_field or your_timestamp_field",
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"date_rounding": "rounding_value"
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}
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}
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```
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{% include copy-curl.html %}
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## Configuration parameters
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The following table lists the required and optional parameters for the `date_index_name` processor.
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Parameter | Required/Optional | Description |
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`field` | Required | The date or timestamp field in the incoming document. Supports [template snippets]({{site.url}}{{site.baseurl}}/ingest-pipelines/create-ingest/#template-snippets). |
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`date_rounding` | Required | The rounded date format within the index name . Valid values are `y` (year), `M` (month), `w` (week), `d` (day), `h` (hour), `m` (minute), and `s` (second). |
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`date_formats` | Optional | An array of date formats used to parse the date or timestamp field. Valid options include a java time pattern or one of the following formats: ISO8601, UNIX, UNIX_MS, or TAI64N. Default is `yyyy-MM-dd'T'HH:mm:ss.SSSXX`. |
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`index_name_format` | Optional | The date format. Default is `yyyy-MM-dd`. Supports [template snippets]({{site.url}}{{site.baseurl}}/ingest-pipelines/create-ingest/#template-snippets). |
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`index_name_prefix` | Optional | The index name prefix to append before the date. Supports [template snippets]({{site.url}}{{site.baseurl}}/ingest-pipelines/create-ingest/#template-snippets).
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`description` | Optional | A brief description of the processor. |
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`if` | Optional | A condition for running this processor. |
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`ignore_failure` | Optional | If set to `true`, failures are ignored. Default is `false`. |
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`locale` | `locale` | Optional | The locale to use when parsing the month name and week day of the date. Default is `ENGLISH`. Supports [template snippets]({{site.url}}{{site.baseurl}}/ingest-pipelines/create-ingest/#template-snippets). |
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`on_failure` | Optional | A list of processors to run if the processor fails. |
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`tag` | Optional | An identifier tag for the processor. Useful for debugging to distinguish between processors of the same type. |
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`timezone` | Optional | The time zone to use when parsing the date. Default is `UTC`. |
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## Using the processor
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Follow these steps to use the processor in a pipeline.
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**Step 1: Create a pipeline.**
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The following query creates a pipeline, named `date-index-name1`, that uses the `date_index_name` processor to index logs into monthly indexes:
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```json
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PUT /_ingest/pipeline/date-index-name1
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{
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"description": "Create weekly index pipeline",
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"processors": [
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{
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"date_index_name": {
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"field": "date_field",
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"index_name_prefix": "week_index-",
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"date_rounding": "w",
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"date_formats": ["YYYY-MM-DD"]
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}
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}
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]
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}
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```
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{% include copy-curl.html %}
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**Step 2 (Optional): Test the pipeline.**
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It is recommended that you test your pipeline before you ingest documents.
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{: .tip}
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To test the pipeline, run the following query:
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```json
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POST _ingest/pipeline/date-index-name1/_simulate
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{
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"docs": [
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{
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"_index": "testindex1",
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"_id": "1",
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"_source": {
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"date_field": "2023-10-30"
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}
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}
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]
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}
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```
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{% include copy-curl.html %}
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#### Response
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The following example response confirms that the pipeline is working as expected:
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```json
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{
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"docs": [
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{
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"doc": {
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"_index": "<week_index-{2023-10-01||/w{yyyy-MM-dd|UTC}}>",
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"_id": "1",
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"_source": {
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"date_field": "2023-10-30"
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},
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"_ingest": {
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"timestamp": "2023-11-13T18:23:10.408593092Z"
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}
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}
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}
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]
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}
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```
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**Step 3: Ingest a document.**
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The following query ingests a document into an index named `testindex1`:
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```json
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PUT testindex1/_doc/1?pipeline=date-index-name1
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{
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"date_field": "2023-10-30"
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}
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```
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{% include copy-curl.html %}
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#### Response
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The request indexes the document into the index `week_index-2023-10-23` and will index all documents with a timestamp within that week into the same index because the pipeline rounds by week.
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```json
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{
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"_index": "week_index-2023-10-30",
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"_id": "1",
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"_version": 4,
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"result": "updated",
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"_shards": {
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"total": 2,
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"successful": 1,
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"failed": 0
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},
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"_seq_no": 3,
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"_primary_term": 1
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}
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```
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**Step 4 (Optional): Retrieve the document.**
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To retrieve the document, run the following query:
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```json
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GET week_index-2023-10-30/_doc/1
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```
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{% include copy-curl.html %}
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