[-] fix timeline ID conversion by cybertec-postgresql/pgwatch2#604

src/metrics/wal/11/metric.sql

@@ -8,5 +8,11 @@ select /* pgwatch3_generated */
     end as xlog_location_b,
   case when pg_is_in_recovery() then 1 else 0 end as in_recovery_int,
   extract(epoch from (now() - pg_postmaster_start_time()))::int8 as postmaster_uptime_s,
-  system_identifier::text as tag_sys_id
+  system_identifier::text as tag_sys_id,
+  case
+    when pg_is_in_recovery() = false then
+      ('x'||substr(pg_walfile_name(pg_current_wal_lsn()), 1, 8))::bit(32)::int
+    else
+      (select min_recovery_end_timeline::int from pg_control_recovery())
+    end as timeline
 from pg_control_system();

src/metrics/wal/11/metric_su.sql

@@ -8,5 +8,11 @@ select /* pgwatch3_generated */
     end as xlog_location_b,
   case when pg_is_in_recovery() then 1 else 0 end as in_recovery_int,
   extract(epoch from (now() - coalesce((pg_stat_file('postmaster.pid', true)).modification, pg_postmaster_start_time())))::int8 as postmaster_uptime_s,
-  system_identifier::text as tag_sys_id
+  system_identifier::text as tag_sys_id,
+  case
+    when pg_is_in_recovery() = false then
+      ('x'||substr(pg_walfile_name(pg_current_wal_lsn()), 1, 8))::bit(32)::int
+    else
+      (select min_recovery_end_timeline::int from pg_control_recovery())
+    end as timeline
 from pg_control_system();

src/sql/config_store/metric_definitions.sql

@@ -1088,7 +1088,13 @@ select
     end as xlog_location_b,
   case when pg_is_in_recovery() then 1 else 0 end as in_recovery_int,
   extract(epoch from (now() - pg_postmaster_start_time()))::int8 as postmaster_uptime_s,
-  system_identifier::text as tag_sys_id
+  system_identifier::text as tag_sys_id,
+  case
+    when pg_is_in_recovery() = false then
+      ('x'||substr(pg_walfile_name(pg_current_wal_lsn()), 1, 8))::bit(32)::int
+    else
+      (select min_recovery_end_timeline::int from pg_control_recovery())
+    end as timeline
 from pg_control_system();
 $sql$,
 $sql$
@@ -1102,7 +1108,13 @@ select
     end as xlog_location_b,
   case when pg_is_in_recovery() then 1 else 0 end as in_recovery_int,
   extract(epoch from (now() - coalesce((pg_stat_file('postmaster.pid', true)).modification, pg_postmaster_start_time())))::int8 as postmaster_uptime_s,
-  system_identifier::text as tag_sys_id
+  system_identifier::text as tag_sys_id,
+  case
+    when pg_is_in_recovery() = false then
+      ('x'||substr(pg_walfile_name(pg_current_wal_lsn()), 1, 8))::bit(32)::int
+    else
+      (select min_recovery_end_timeline::int from pg_control_recovery())
+    end as timeline
 from pg_control_system();
 $sql$,
 '{"prometheus_gauge_columns": ["in_recovery_int", "postmaster_uptime_s"]}'