Merge pull request #125 from postgres-ai/46-connections-check

G0002 current connections check

Author: dmius

check

@@ -486,7 +486,8 @@ generate_report_json() {
   fi
 
   local tmp_output_json_fname=$(mktemp "${JSON_REPORTS_DIR}"/${check_id}_${check_name}_tmp_XXXXXX)
-  jq --argfile Results "${tmp_input_json_fname}" \
+  jq -r \
+     --argfile Results "${tmp_input_json_fname}" \
      --arg CheckId "${check_id}" \
      --arg CheckName "${check_name}" \
      --arg TimestampTz "${TIMESTAMPTZ}" \

pghrep/templates/G002.tpl

@@ -0,0 +1,42 @@
+Current values
+===
+
+Connections and current activity
+
+Master DB server '{{.hosts.master}}':
+
+```
+{{ (index (index .results .hosts.master) "data").raw }}
+```
+{{/* newline */}}
+{{/* newline */}}
+
+{{- if gt (len .hosts.replicas) 0 -}}
+Slave DB servers
+{{/* newline */}}
+{{/* newline */}}
+  {{- range $skey, $host := .hosts.replicas -}}
+  DB slave server: '{{ $host }}':
+    {{- if (index $.results $host) -}}
+{{/* newline */}}
+{{/* newline */}}
+```
+{{ (index (index $.results $host) "data").raw }}
+```
+    {{- else -}}
+```
+No data
+```
+    {{- end -}}
+  {{- end -}}
+{{- end -}}
+
+{{/* newline */}}
+{{/* newline */}}
+Conclusions
+===
+{{.Conclusion}}
+
+Recommendations
+===
+{{.Recommended}}

pghrep/templates/raw.tpl

@@ -5,9 +5,12 @@ Some collected
 data with help of checker
 
 {{ range $host, $data := .rawData }}
-    Host: {{ (index $data "host") }}
-    ``` {{ (index $data "data") }} ```
-{{ end }}
 
+Host: {{ (index $data "host") }}
+
+```bash
+{{ (index $data "data") }}
+```
 
+{{ end }}
 

resources/checks/A004_cluster_info.sh

@@ -0,0 +1,21 @@
+# Current Activity: count of current connections grouped by database, user name, state
+
+sql=$(curl -s -L https://raw.githubusercontent.com/NikolayS/postgres_dba/4.0/sql/a1_activity.sql | awk '{gsub("; *$", "", $0); print $0}')
+
+data=$(${CHECK_HOST_CMD} "${_PSQL} ${PSQL_CONN_OPTIONS} -f -" <<SQL
+-- disble psql CLI options '-A -t' for this report
+\pset tuples_only
+\pset format aligned
+
+with data as (
+  $sql
+),
+num_data as (
+  select row_number() over () num, data.* from data
+)
+select * from num_data
+SQL)
+
+data="{ \"raw\": \"${data}\" }"
+jq -n "${data}"
+