[ENG-9708] drop elastic6

.github/workflows/test_djelme.yml

@@ -28,10 +28,6 @@ jobs:
         python: ['3.10', '3.11', '3.12', '3.13', '3.14']
         django: ['4.2', '5.1', '5.2']
     services:
-      elasticsearch6:
-        image: elasticsearch:6.8.23
-        ports:
-          - 9206:9200
       elasticsearch8:
         image: elasticsearch:8.19.11
         ports:
@@ -51,9 +47,8 @@ jobs:
         run: alias python${{ steps.setup-py.outputs.python-version }}=${{ steps.setup-py.outputs.python-path }}
 
       - name: install despondencies
-        run: pip install -U poetry && poetry install --with=dev --extras=elastic6 --extras=elastic8
+        run: pip install -U poetry && poetry install --with=dev --extras=elastic8
 
       - run: TOXENV=`echo 'py${{ matrix.python }}-django${{matrix.django}}' | sed 's/\.//g'` poetry run tox
         env:
-          ELASTICSEARCH6_URL: http://localhost:9206
           ELASTICSEARCH8_URL: http://localhost:9208

CONTRIBUTING.md

@@ -36,14 +36,14 @@ install [poetry](https://python-poetry.org):
 pip install poetry
 ```
 
-install the current project (in editable mode) and dependencies (with the `dev` dependency group and the extras `elastic6`, `elastic8`, `anydjango`):
+install the current project (in editable mode) and dependencies (with the `dev` dependency group and the extras `elastic8`, `anydjango`):
 ```
-poetry install --with=dev --extras=elastic6 --extras=elastic8 --extras=anydjango
+poetry install --with=dev --extras=elastic8 --extras=anydjango
 ```
 
 ### run tests and checks
 
-these expect elasticsearches to be running and configured in `elasticsearch_metrics/tests/settings.py` (or set environment variables `ELASTICSEARCH6_URL` and `ELASTICSEARCH8_URL`) -- see `using docker-style container tools`, below, for one way to do that
+these expect elasticsearch to be running and configured in `elasticsearch_metrics/tests/settings.py` (or set environment variable and `ELASTICSEARCH8_URL`) -- see `using docker-style container tools`, below, for one way to do that
 
 running the python module `elasticsearch_metrics.tests` will run tests and linting checks
 -- any code merged to `main` should pass for all supported python and django combinations
@@ -93,9 +93,9 @@ see `testbox.Containerfile` and `docker-compose.yml` for a local setup -- runnin
 
 (note: examples use `pc` aliased to a `docker-compose` equivalent)
 
-start elasticsearches in the background
+start elasticsearch in the background
 ```
-pc up -d elasticsearch6 elasticsearch8
+pc up -d elasticsearch8
 ```
 
 run tests and lint

README.md

@@ -7,14 +7,13 @@ Django app for storing time-series metrics in Elasticsearch.
 python importables:
 - `elasticsearch_metrics`
 - `elasticsearch_metrics.imps.elastic8` (an implementation with elasticsearch 8)
-- `elasticsearch_metrics.imps.elastic6` (an implementation with elasticsearch 6; deprecated)
 - ...
 
 ## Pre-requisites
 
 * Python >=3.10
 * Django 4.2, 5.1, or 5.2
-* Elasticsearch 8 (or 6, for deprecated back-compat)
+* Elasticsearch 8
 
 ## Install
 

docker-compose.yml

@@ -1,18 +1,11 @@
 version: '3'
 services:
-  elasticsearch6:
-    image: docker.elastic.co/elasticsearch/elasticsearch:6.3.1
-    healthcheck:
-      interval: 30s
-      retries: 10
-      test: curl -s http://localhost:9200/_cluster/health | grep -vq '"status":"red"'
-    networks:
-      - djelme
   elasticsearch8:
     image: docker.elastic.co/elasticsearch/elasticsearch:8.19.11
     environment:
       - xpack.security.enabled=false
       - discovery.type=single-node
+      - ES_JAVA_OPTS=-Xms256m -Xmx256m  # reduce memory usage
     healthcheck:
       interval: 30s
       retries: 10
@@ -24,13 +17,10 @@ services:
       context: .
       dockerfile: testbox.Containerfile
     depends_on:
-      elasticsearch6:
-        condition: service_healthy
       elasticsearch8:
         condition: service_healthy
     environment:
       # TOXENV: py310-django42
-      ELASTICSEARCH6_URL: elasticsearch6:9200
       ELASTICSEARCH8_URL: http://elasticsearch8:9200
     networks:
       - djelme

elasticsearch_metrics/imps/__init__.py

@@ -1,4 +1 @@
-__all__ = (
-    "elastic6",
-    "elastic8",
-)
+__all__ = ("elastic8",)