Add "docker run" files

Webapps/PrometheusDatabaseExporterWar/README.md

@@ -35,6 +35,8 @@ For now, only two types exist: **sql** and **file**. File is implemented as the
 
 ## Examples
 
+There's an example docker compose file at `docker/docker-compose.yml`.
+
 ### Heartbeat (synchronous)
 
 The simplest descriptor possible is that one:
@@ -165,5 +167,3 @@ The configuration can be done through a properties file containing the following
 | config.parallel.thread.pool.size | int | 10 | number of maximum concurrent threads |
 | config.root.folder | String |  | path to the folder containing the json descriptors|
 | cache.folder | String |  | Path to the folder that will be used as a local cache for asynch metrics.  |
-
-## Docker Image

Webapps/PrometheusDatabaseExporterWar/docker/docker-compose.yml

@@ -0,0 +1,32 @@
+services:
+  database:
+    image: ghcr.io/baosystems/postgis:12-3.3
+    ports:
+      - 127.0.0.1:5432:5432
+    environment:
+      POSTGRES_USER: dhis
+      POSTGRES_DB: dhis
+      POSTGRES_PASSWORD: &postgres_password dhis
+      PGPASSWORD: *postgres_password # needed by psql in healthcheck
+    healthcheck:
+      test: ["CMD-SHELL", "psql --no-password --quiet --username $$POSTGRES_USER postgres://127.0.0.1/$$POSTGRES_DB -p 5432 --command \"SELECT 'ok'\" > /dev/null"]
+      start_period: 120s
+      interval: 1s
+      timeout: 3s
+      retries: 5
+
+  prometheusdbexporter:
+    build:
+      context: ..
+      args:
+        PROJECT_VERSION: 0.0.0
+    ports:
+      - 127.0.0.1:8080:8080
+    environment:
+      TODO: tada
+      TIDI: tudu
+      POSTGRES_PASSWORD: &postgres_password dhis
+      PGPASSWORD: *postgres_password # needed by psql in healthcheck
+    volumes:
+      - ../target/tmp:/tmp
+      - ./sources:/app/rtsl/prom_db_exporter/sources

Webapps/PrometheusDatabaseExporterWar/docker/sources/heartbeat.json

@@ -0,0 +1,13 @@
+{
+  "asynch": false,
+  "type": "sql",
+  "name": "dbHeartbeat",
+  "query": "select 1 as value, 'database' as source;",
+  "metrics": [{
+    "metricName": "postgres_heartbeat",
+    "metricValueKey": "value",
+    "labelsKeys": {
+      "source": "source"
+    }
+  }]
+}

Webapps/PrometheusDatabaseExporterWar/docker/sources/sessions.json

@@ -0,0 +1,13 @@
+{
+  "asynch": false,
+  "type": "sql",
+  "name": "getSessionInfo",
+  "query": "select application_name, count(*) as value from pg_stat_activity group by application_name",
+  "metrics": [{
+    "metricName": "postgres_sessions_per_application_count",
+    "metricValueKey": "value",
+    "labelsKeys": {
+      "application_name": "application_name"
+    }
+  }]
+}

Webapps/PrometheusDatabaseExporterWar/docker/sources/tracked_entities.json

@@ -0,0 +1,15 @@
+{
+  "asynch": true,
+  "type": "sql",
+  "cron": "* * * * *",
+  "name": "DHIS2_Trackedentityinstance",
+  "query": "select trackedentityinstance.trackedentitytypeid, trackedentitytype.name, count(*) as value from trackedentityinstance left outer join trackedentitytype on trackedentityinstance.trackedentitytypeid = trackedentitytype.trackedentitytypeid group by trackedentityinstance.trackedentitytypeid, trackedentitytype.name",
+  "metrics": [{
+    "metricName": "dhis2_trackedentityinstance_count",
+    "metricValueKey": "value",
+    "labelsKeys": {
+      "trackedentitytypeid": "trackedentitytypeid",
+      "name": "name"
+    }
+  }]
+}