Update metrics extraction for swh-scrubber v2

Adapt the SQL query for the swh_scrubber_coverage metrics and add a new
swh_scrubber_ongoing_check one giving some insight on the currently
running checks.

site-modules/profile/files/prometheus/sql/config/swh-scrubber.yml

@@ -4,18 +4,35 @@
   interval: '1h'
   help: "Software Heritage Scheduler scrubber coverage"
   query: |
+    WITH CP as (
+      SELECT
+        config_id,
+        count(partition_id) as checked_partitions,
+        MIN(end_date) AS oldest_partition,
+        MAX(end_date) AS newest_partition,
+        MIN(end_date - start_date) AS min_duration,
+        MAX(end_date - start_date) AS max_duration,
+        AVG(end_date - start_date) AS mean_duration
+      FROM checked_partition
+      WHERE end_date IS NOT NULL
+      GROUP BY config_id
+      )
     SELECT
-        datastore.package AS datastore_package,
-        datastore.class AS datastore_class,
-        datastore.instance AS datastore_instance,
-        checked_partition.object_type AS object_type,
-        checked_partition.nb_partitions AS partitions_total,
-        COUNT(*) AS partitions_checked_total,
-        EXTRACT (EPOCH FROM MIN(last_date)) AS oldest_partition_check_timestamp_seconds,
-        EXTRACT (EPOCH FROM MAX(last_date)) AS newest_partition_check_timestamp_seconds
-    FROM checked_partition
-    INNER JOIN datastore ON (datastore.id=checked_partition.datastore)
-    GROUP BY 1,2,3,4,5;
+      D.package AS datastore_package,
+      D.class AS datastore_class,
+      D.instance AS datastore_instance,
+      CC.object_type AS object_type,
+      CC.nb_partitions AS partitions_total,
+      CP.checked_partitions AS partitions_checked_total,
+      EXTRACT (EPOCH FROM CP.oldest_partition) AS oldest_partition_check_timestamp_seconds,
+      EXTRACT (EPOCH FROM CP.newest_partition) AS newest_partition_check_timestamp_seconds,
+      EXTRACT (EPOCH FROM CP.min_duration) AS partition_check_min_duration_seconds,
+      EXTRACT (EPOCH FROM CP.max_duration) AS partition_check_max_duration_seconds,
+      EXTRACT (EPOCH FROM CP.mean_duration) AS partition_check_mean_duration_seconds
+    FROM CP
+    INNER JOIN check_config AS CC ON (CP.config_id=CC.id)
+    INNER JOIN datastore AS D ON (CC.datastore=D.id)
+    ;
   labels:
     - datastore_package
     - datastore_class
@@ -26,3 +43,47 @@
     - partitions_checked_total
     - oldest_partition_check_timestamp_seconds
     - newest_partition_check_timestamp_seconds
+    - partition_check_min_duration_seconds
+    - partition_check_max_duration_seconds
+    - partition_check_mean_duration_seconds
+
+
+- name: swh_scrubber_ongoing_check
+  scope: database
+  database: ^(swh|softwareheritage)-scrubber$
+  interval: '1h'
+  help: "Software Heritage Scheduler scrubber ongoing scrubber checks"
+  query: |
+    WITH CP as (
+      SELECT
+        config_id,
+        count(partition_id) as checking_partitions,
+        MIN(start_date) AS oldest_partition,
+        MAX(start_date) AS newest_partition
+      FROM checked_partition
+      WHERE end_date IS NULL
+      GROUP BY config_id
+      )
+    SELECT
+      D.package AS datastore_package,
+      D.class AS datastore_class,
+      D.instance AS datastore_instance,
+      CC.object_type AS object_type,
+      CC.nb_partitions AS partitions_total,
+      CP.checking_partitions AS partitions_checking_total,
+      EXTRACT (EPOCH FROM CP.oldest_partition) AS oldest_partition_check_start_timestamp_seconds,
+      EXTRACT (EPOCH FROM CP.newest_partition) AS newest_partition_check_start_timestamp_seconds
+    FROM CP
+    INNER JOIN check_config AS CC ON (CP.config_id=CC.id)
+    INNER JOIN datastore AS D ON (CC.datastore=D.id)
+    ;
+  labels:
+    - datastore_package
+    - datastore_class
+    - datastore_instance
+    - object_type
+  values:
+    - partitions_total
+    - partitions_checking_total
+    - oldest_partition_check_start_timestamp_seconds
+    - newest_partition_check_start_timestamp_seconds