Adds support for YAML configuration files

cmd/grafterm/main.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"os"
 	"os/signal"
+	"path/filepath"
 	"syscall"
 	"time"
 
@@ -168,12 +169,23 @@ func loadConfiguration(cfgPath string) (configuration.Configuration, error) {
 	}
 	defer f.Close()
 
-	cfg, err := configuration.JSONLoader{}.Load(f)
-	if err != nil {
-		return nil, err
-	}
+	switch filepath.Ext(cfgPath) {
+	case ".yaml", ".yml":
+		cfg, err := configuration.YAMLLoader{}.Load(f)
+		if err != nil {
+			return nil, err
+		}
+		return cfg, nil
 
-	return cfg, nil
+	case ".json":
+		fallthrough
+	default:
+		cfg, err := configuration.JSONLoader{}.Load(f)
+		if err != nil {
+			return nil, err
+		}
+		return cfg, nil
+	}
 }
 
 func (m *Main) loadUserDatasources() ([]model.Datasource, error) {

dashboard-examples/yaml/gitlab.yaml

@@ -0,0 +1,180 @@
+version: v1
+datasources:
+  gitlab:
+    prometheus:
+      address: https://dashboards.gitlab.com/api/datasources/proxy/1/
+dashboard:
+  variables:
+    env:
+      constant:
+        value: gprd
+    monitor:
+      constant:
+        value: default
+    interval:
+      interval:
+        steps: 50
+  widgets:
+    - title: GitLab.com
+      gridPos:
+        w: 10
+      singlestat:
+        query:
+          datasourceID: gitlab
+          expr: avg_over_time(probe_success{env="{{.env}}",monitor="default",instance="https://gitlab.com",
+            job="blackbox-tls-redirect"}[{{.interval}}])
+        valueText: '{{ if (lt .value 1.0) }}DOWN{{else}}UP{{end}}'
+        thresholds:
+          - color: '#d44a3a'
+          - color: '#2dc937'
+            startValue: 1
+    - title: Infrastructure alerts
+      gridPos:
+        w: 10
+      singlestat:
+        query:
+          datasourceID: gitlab
+          expr: sum(max_over_time(ALERTS{env="{{.env}}",monitor="{{.monitor}}",alertstate="firing"}[{{.interval}}]))
+            OR vector(0)
+        valueText: '{{ printf "%.0f" .value }}'
+        thresholds:
+          - color: '#2dc937'
+          - color: '#e7b416'
+            startValue: 1
+          - color: '#d44a3a'
+            startValue: 10
+    - title: GitLab registry
+      gridPos:
+        w: 10
+      singlestat:
+        query:
+          datasourceID: gitlab
+          expr: avg_over_time(probe_success{env="{{.env}}",monitor="default",instance="https://registry.gitlab.com",
+            job="blackbox"}[{{.interval}}])
+        valueText: '{{ if (lt .value 1.0) }}DOWN{{else}}UP{{end}}'
+        thresholds:
+          - color: '#d44a3a'
+          - color: '#2dc937'
+            startValue: 1
+    - title: Application alerts
+      gridPos:
+        w: 10
+      singlestat:
+        query:
+          datasourceID: gitlab
+          expr: sum(max_over_time(ALERTS{env="{{.env}}",monitor="app",alertstate="firing"}[{{.interval}}]))
+            or vector(0)
+        valueText: '{{ printf "%.0f" .value }}'
+        thresholds:
+          - color: '#2dc937'
+          - color: '#e7b416'
+            startValue: 1
+          - color: '#d44a3a'
+            startValue: 10
+    - title: Reboots (last 48h)
+      gridPos:
+        w: 10
+      singlestat:
+        query:
+          datasourceID: gitlab
+          expr: sum(count((time() - node_boot_time_seconds{env="{{.env}}",monitor="default"})
+            / 3600 < 48) by (fqdn))
+        valueText: '{{ printf "%.0f" .value }}'
+    - title: GitLab Pages
+      gridPos:
+        w: 10
+      singlestat:
+        query:
+          datasourceID: gitlab
+          expr: avg_over_time(probe_success{env="{{.env}}",instance="https://gitlab-examples.gitlab.io",job="blackbox"}[{{.interval}}])
+        valueText: '{{ if (lt .value 1.0) }}DOWN{{else}}UP{{end}}'
+        thresholds:
+          - color: '#d44a3a'
+          - color: '#2dc937'
+            startValue: 1
+    - title: GitLab Sign-in
+      gridPos:
+        w: 10
+      singlestat:
+        query:
+          datasourceID: gitlab
+          expr: avg_over_time(probe_success{env="{{.env}}",instance="https://gitlab.com/users/sign_in",job="blackbox"}[{{.interval}}])
+        valueText: '{{ if (lt .value 1.0) }}DOWN{{else}}UP{{end}}'
+        thresholds:
+          - color: '#d44a3a'
+          - color: '#2dc937'
+            startValue: 1
+    - title: internal LB
+      gridPos:
+        w: 10
+      singlestat:
+        query:
+          datasourceID: gitlab
+          expr: avg_over_time(probe_success{env="{{.env}}",instance="https://int.{{.env}}.gitlab.net/-/liveness",job="blackbox-internal"}[{{.interval}}])
+        valueText: '{{ if (lt .value 1.0) }}DOWN{{else}}UP{{end}}'
+        thresholds:
+          - color: '#d44a3a'
+          - color: '#2dc937'
+            startValue: 1
+    - title: Chef errors
+      gridPos:
+        w: 20
+      singlestat:
+        query:
+          datasourceID: gitlab
+          expr: sum(round(avg_over_time(chef_client_error{env="{{.env}}"}[{{.interval}}])))
+        valueText: '{{ printf "%.0f" .value }} NODES'
+    - title: Gitlab HAProxy backend responses
+      gridPos:
+        w: 100
+      graph:
+        visualization:
+          legend:
+            disable: false
+            rightSide: false
+          yAxis:
+            unit: reqps
+            decimals: 2
+        queries:
+          - datasourceID: gitlab
+            legend: '{{ .backend }}'
+            expr: sum(avg_over_time(backend_code:haproxy_server_http_responses_total:irate1m{env="{{.env}}",monitor="{{.monitor}}"}[{{.interval}}]))
+              by (backend)
+    - title: Gitlab HAProxy frontend responses
+      gridPos:
+        w: 100
+      graph:
+        visualization:
+          legend:
+            disable: false
+            rightSide: false
+          yAxis:
+            unit: reqps
+            decimals: 2
+        queries:
+          - datasourceID: gitlab
+            legend: '{{ .frontend }}'
+            expr: sum(avg_over_time(frontend_code:haproxy_frontend_http_responses_total:irate1m{env="{{.env}}",monitor="{{.monitor}}"}[{{.interval}}]))
+              by (frontend)
+    - title: Gitlab 5XX responses
+      gridPos:
+        w: 100
+      graph:
+        visualization:
+          legend:
+            disable: false
+            rightSide: false
+          yAxis:
+            unit: reqps
+            decimals: 2
+        queries:
+          - legend: haproxy 5xx {{ .backend }}
+            datasourceID: gitlab
+            expr: sum(avg_over_time(backend_code:haproxy_server_http_responses_total:irate1m{env="{{.env}}",monitor="{{.monitor}}",code="5xx"}[{{.interval}}]))
+              by (backend)
+          - legend: SD haproxy {{ .code }}
+            datasourceID: gitlab
+            expr: sum without (zone) (avg_over_time(zone:stackdriver_haproxy_errors:rate1m{env="{{.env}}",monitor="{{.monitor}}"}[{{.interval}}]))
+          - legend: SD haproxy timeout
+            datasourceID: gitlab
+            expr: sum without (zone) (zone:stackdriver_haproxy_deadline_exceeded:rate1m{env="{{.env}}",monitor="{{.monitor}}"})

dashboard-examples/yaml/go.yaml

@@ -0,0 +1,128 @@
+version: v1
+datasources:
+  prometheus:
+    prometheus:
+      address: http://127.0.0.1:9090
+dashboard:
+  variables:
+    job:
+      constant:
+        value: prometheus
+    interval:
+      interval:
+        steps: 50
+  widgets:
+    - title: Goroutines
+      gridPos:
+        w: 20
+      singlestat:
+        thresholds:
+          - color: '#47D038'
+        query:
+          datasourceID: prometheus
+          expr: sum(go_goroutines{job="{{.job}}"})
+    - title: GC duration
+      gridPos:
+        w: 20
+      singlestat:
+        unit: second
+        query:
+          datasourceID: prometheus
+          expr: max(go_gc_duration_seconds{job="{{.job}}"})
+    - title: Stack
+      gridPos:
+        w: 20
+      singlestat:
+        unit: bytes
+        thresholds:
+          - color: '#22F1F1'
+        query:
+          datasourceID: prometheus
+          expr: sum(go_memstats_stack_inuse_bytes{job="{{.job}}"})
+    - title: Heap
+      gridPos:
+        w: 20
+      singlestat:
+        unit: bytes
+        thresholds:
+          - color: '#22F1F1'
+        query:
+          datasourceID: prometheus
+          expr: sum(go_memstats_heap_inuse_bytes{job="{{.job}}"})
+    - title: Alloc
+      gridPos:
+        w: 20
+      singlestat:
+        unit: bytes
+        thresholds:
+          - color: '#22F1F1'
+        query:
+          datasourceID: prometheus
+          expr: sum(go_memstats_alloc_bytes{job="{{.job}}"})
+    - title: Goroutines
+      gridPos:
+        w: 50
+      graph:
+        visualization:
+          legend:
+            disable: true
+          yAxis:
+            unit: ''
+            decimals: 2
+        queries:
+          - datasourceID: prometheus
+            expr: sum(go_goroutines{job="{{.job}}"})
+    - title: GC duration
+      gridPos:
+        w: 50
+      graph:
+        queries:
+          - datasourceID: prometheus
+            expr: max(go_gc_duration_seconds{job="{{.job}}"}) by (quantile)
+            legend: Q{{.quantile}}
+        visualization:
+          yAxis:
+            unit: second
+          seriesOverride:
+            - regex: ^Q0$
+              color: '#F9E2D2'
+            - regex: ^Q0.25$
+              color: '#F2C96D'
+            - regex: ^Q0.5(0)?$
+              color: '#EAB839'
+            - regex: ^Q0.75$
+              color: '#EF843C'
+            - regex: ^Q1(.0)?$
+              color: '#E24D42'
+    - title: Memory
+      gridPos:
+        w: 50
+      graph:
+        visualization:
+          yAxis:
+            unit: byte
+            decimals: 0
+        queries:
+          - datasourceID: prometheus
+            expr: sum(go_memstats_stack_inuse_bytes{job="{{.job}}"})
+            legend: stack inuse
+          - datasourceID: prometheus
+            expr: sum(go_memstats_heap_inuse_bytes{job="{{.job}}"})
+            legend: heap inuse
+          - datasourceID: prometheus
+            expr: sum(go_memstats_alloc_bytes{job="{{.job}}"})
+            legend: alloc
+    - title: Memory ops rate
+      gridPos:
+        w: 50
+      graph:
+        queries:
+          - datasourceID: prometheus
+            expr: sum(rate(go_memstats_frees_total{job="{{.job}}"}[{{.interval}}]))
+            legend: frees/s
+          - datasourceID: prometheus
+            expr: sum(rate(go_memstats_mallocs_total{job="{{.job}}"}[{{.interval}}]))
+            legend: mallocs/s
+          - datasourceID: prometheus
+            expr: sum(rate(go_memstats_lookups_total{job="{{.job}}"}[{{.interval}}]))
+            legend: lookups/s