change: more work on changing default group by time interval to min interval setting

pkg/plugins/datasource_plugin.go

@@ -11,12 +11,10 @@ type DataSourcePlugin struct {
 	Annotations  bool            `json:"annotations"`
 	Metrics      bool            `json:"metrics"`
 	Alerting     bool            `json:"alerting"`
-	MinInterval   bool `json:"minInterval,omitempty"`
-	CacheTimeout  bool `json:"cacheTimeout,omitempty"`
-	MaxDataPoints bool `json:"maxDataPoints,omitempty"`
+	QueryOptions map[string]bool `json:"queryOptions,omitempty"`
 	BuiltIn      bool            `json:"builtIn,omitempty"`
 	Mixed        bool            `json:"mixed,omitempty"`
-	HasHelp       bool `json:"hasHelp,omitempty"`
+	HasQueryHelp bool            `json:"hasQueryHelp,omitempty"`
 
 	Routes []*AppPluginRoute `json:"-"`
 }
@@ -31,12 +29,12 @@ func (p *DataSourcePlugin) Load(decoder *json.Decoder, pluginDir string) error {
 	}
 
 	// look for help markdown
-	helpPath := filepath.Join(p.PluginDir, "HELP.md")
+	helpPath := filepath.Join(p.PluginDir, "QUERY_HELP.md")
 	if _, err := os.Stat(helpPath); os.IsNotExist(err) {
-		helpPath = filepath.Join(p.PluginDir, "help.md")
+		helpPath = filepath.Join(p.PluginDir, "query_help.md")
 	}
 	if _, err := os.Stat(helpPath); err == nil {
-		p.HasHelp = true
+		p.HasQueryHelp = true
 	}
 
 	DataSources[p.Id] = p

public/app/core/utils/kbn.js

@@ -163,21 +163,15 @@ function($, _) {
     ms: 0.001
   };
 
-  kbn.calculateInterval = function(range, resolution, userInterval) {
+  kbn.calculateInterval = function(range, resolution, lowLimitInterval) {
     var lowLimitMs = 1; // 1 millisecond default low limit
-    var intervalMs, lowLimitInterval;
+    var intervalMs;
 
-    if (userInterval) {
-      if (userInterval[0] === '>') {
-        lowLimitInterval = userInterval.slice(1);
-        lowLimitMs = kbn.interval_to_ms(lowLimitInterval);
-      }
-      else {
-        return {
-          intervalMs: kbn.interval_to_ms(userInterval),
-          interval: userInterval,
-        };
+    if (lowLimitInterval) {
+      if (lowLimitInterval[0] === '>') {
+        lowLimitInterval = lowLimitInterval.slice(1);
       }
+      lowLimitMs = kbn.interval_to_ms(lowLimitInterval);
     }
 
     intervalMs = kbn.round_interval((range.to.valueOf() - range.from.valueOf()) / resolution);

public/app/features/panel/metrics_tab.ts

@@ -16,12 +16,10 @@ export class MetricsTabCtrl {
   addQueryDropdown: any;
   queryTroubleshooterOpen: boolean;
   helpOpen: boolean;
-  hasHelp: boolean;
-  helpHtml: string;
-  hasMinInterval: boolean;
-  hasCacheTimeout: boolean;
-  hasMaxDataPoints: boolean;
   optionsOpen: boolean;
+  hasQueryHelp: boolean;
+  helpHtml: string;
+  queryOptions: any;
 
   /** @ngInject */
   constructor($scope, private $sce, private datasourceSrv, private backendSrv, private $timeout) {
@@ -46,10 +44,8 @@ export class MetricsTabCtrl {
   }
 
   updateDatasourceOptions() {
-    this.hasHelp = this.current.meta.hasHelp;
-    this.hasMinInterval = this.current.meta.minInterval === true;
-    this.hasCacheTimeout = this.current.meta.cacheTimeout === true;
-    this.hasMaxDataPoints = this.current.meta.maxDataPoints === true;
+    this.hasQueryHelp = this.current.meta.hasQueryHelp;
+    this.queryOptions = this.current.meta.queryOptions;
   }
 
   getOptions(includeBuiltin) {
@@ -89,7 +85,7 @@ export class MetricsTabCtrl {
     this.queryTroubleshooterOpen = false;
     this.helpOpen = !this.helpOpen;
 
-    this.backendSrv.get(`/api/plugins/${this.current.meta.id}/markdown/help`).then(res => {
+    this.backendSrv.get(`/api/plugins/${this.current.meta.id}/markdown/query_help`).then(res => {
       var md = new Remarkable();
       this.helpHtml = this.$sce.trustAsHtml(md.render(res));
     });

public/app/features/panel/partials/metrics_tab.html

@@ -15,12 +15,12 @@
 		<div class="gf-form gf-form--grow">
 			<label class="gf-form-label gf-form-label--grow"></label>
 		</div>
-		<div class="gf-form" ng-if="ctrl.hasHelp">
+		<div class="gf-form" ng-if="ctrl.queryOptions">
 			<a class="gf-form-label" ng-click="ctrl.toggleOptions()">
 				<i class="fa fa-fw fa-caret-right" ng-hide="ctrl.optionsOpen"></i><i class="fa fa-fw fa-caret-down" ng-show="ctrl.optionsOpen"></i>Options
 			</a>
 		</div>
-		<div class="gf-form" ng-if="ctrl.hasHelp">
+		<div class="gf-form" ng-if="ctrl.hasQueryHelp">
 			<button class="gf-form-label" ng-click="ctrl.toggleHelp()">
 				<i class="fa fa-fw fa-caret-right" ng-hide="ctrl.helpOpen"></i><i class="fa fa-fw fa-caret-down" ng-show="ctrl.helpOpen"></i>Help
 			</button>
@@ -33,8 +33,8 @@
 	</div>
 
 	<div>
-		<div class="" ng-if="ctrl.optionsOpen">
-			<div class="gf-form gf-form--flex-end" ng-if="ctrl.hasMinInterval">
+		<div ng-if="ctrl.optionsOpen">
+			<div class="gf-form gf-form--flex-end" ng-if="ctrl.queryOptions.minInterval">
 				<label class="gf-form-label">Min auto interval</label>
 				<input type="text" class="gf-form-input width-6" placeholder="1s" ng-model="ctrl.panel.interval" spellcheck="false" ng-model-onblur ng-change="ctrl.panelCtrl.refresh()" />
 				<info-popover mode="right-absolute">
@@ -43,7 +43,7 @@
 					string and <code>$__interval_ms</code> for numeric variable that can be used in math expressions.
 				</info-popover>
 			</div>
-			<div class="gf-form gf-form--flex-end" ng-if="ctrl.hasCacheTimeout">
+			<div class="gf-form gf-form--flex-end" ng-if="ctrl.queryOptions.cacheTimeout">
 				<label class="gf-form-label width-9">Cache timeout</label>
 				<input  type="text" class="gf-form-input width-6" placeholder="60" ng-model="ctrl.panel.cacheTimeout" ng-model-onblur ng-change="ctrl.panelCtrl.refresh()" spellcheck="false" />
 				<info-popover mode="right-absolute">
@@ -51,7 +51,7 @@
 					cache timeout. Specify a numeric value in seconds.
 				</info-popover>
 			</div>
-			<div class="gf-form gf-form--flex-end" ng-if="ctrl.hasMaxDataPoints">
+			<div class="gf-form gf-form--flex-end" ng-if="ctrl.queryOptions.maxDataPoints">
 				<label class="gf-form-label width-9">Max data points</label>
 				<input type="text" class="gf-form-input width-6" placeholder="auto" ng-model-onblur ng-change="ctrl.panelCtrl.refresh()" ng-model="ctrl.panel.maxDataPoints" spellcheck="false"  />
 				<info-popover mode="right-absolute">

public/app/features/templating/interval_variable.ts

@@ -54,7 +54,7 @@ export class IntervalVariable implements Variable {
       this.options.unshift({ text: 'auto', value: '$__auto_interval' });
     }
 
-    var res = kbn.calculateInterval(this.timeSrv.timeRange(), this.auto_count, (this.auto_min ? ">"+this.auto_min : null));
+    var res = kbn.calculateInterval(this.timeSrv.timeRange(), this.auto_count, this.auto_min);
     this.templateSrv.setGrafanaVariable('$__auto_interval', res.interval);
   }
 

public/app/plugins/datasource/elasticsearch/partials/config.html

@@ -25,13 +25,14 @@
 		<span class="gf-form-label width-9">Version</span>
 		<select class="gf-form-input gf-size-auto" ng-model="ctrl.current.jsonData.esVersion" ng-options="f.value as f.name for f in ctrl.esVersions"></select>
 	</div>
-
-</div>
-
-<h3 class="page-heading">Default query settings</h3>
-<div class="gf-form-group">
+	<div class="gf-form-inline">
 		<div class="gf-form">
-		<span class="gf-form-label">Group by time interval</span>
-		<input class="gf-form-input max-width-9" type="text" ng-model="ctrl.current.jsonData.timeInterval" spellcheck='false' placeholder="example: >10s">
+			<span class="gf-form-label width-9">Min interval</span>
+			<input type="text" class="gf-form-input width-6" ng-model="ctrl.current.jsonData.timeInterval" spellcheck='false' placeholder="10s"></input>
+			<info-popover mode="right-absolute">
+				A lower limit for the auto group by time interval. Recommended to be set to write frequency,
+				for example <code>1m</code> if your data is written every minute.
+			</info-popover>
+		</div>
 	</div>
 </div>

public/app/plugins/datasource/graphite/plugin.json

@@ -10,8 +10,11 @@
   "metrics": true,
   "alerting": true,
   "annotations": true,
+
+  "queryOptions": {
     "maxDataPoints": true,
-  "cacheTimeout": true,
+    "cacheTimeout": true
+  },
 
   "info": {
     "author": {

public/app/plugins/datasource/influxdb/partials/config.html

@@ -24,10 +24,14 @@
 </div>
 
 <div class="gf-form-group">
-	<div class="gf-form max-width-21">
-		<span class="gf-form-label">Default group by time</span>
-		<input type="text" class="gf-form-input width-6" ng-model="ctrl.current.jsonData.timeInterval"
-		spellcheck='false' placeholder="example: >10s"></input>
-		<i class="fa fa-question-circle" bs-tooltip="'Set a low limit by having a greater sign: example: >10s'" data-placement="right"></i>
+	<div class="gf-form-inline">
+		<div class="gf-form">
+			<span class="gf-form-label">Min interval</span>
+			<input type="text" class="gf-form-input width-6" ng-model="ctrl.current.jsonData.timeInterval" spellcheck='false' placeholder="10s"></input>
+			<info-popover mode="right-absolute">
+				A lower limit for the auto group by time interval. Recommended to be set to write frequency,
+				for example <code>1m</code> if your data is written every minute.
+			</info-popover>
+		</div>
 	</div>
 </div>

public/app/plugins/datasource/influxdb/plugin.json

@@ -7,7 +7,10 @@
   "metrics": true,
   "annotations": true,
   "alerting": true,
-  "minInterval": true,
+
+  "queryOptions": {
+    "minInterval": true
+  },
 
   "info": {
     "author": {

public/app/plugins/datasource/influxdb/query_help.md

+#### Alias patterns
+- replaced with measurement name
+- $measurement = replaced with measurement name
+- $1 - $9 = replaced with part of measurement name (if you separate your measurement name with dots)
+- $col = replaced with column name
+- $tag_exampletag = replaced with the value of the <i>exampletag</i> tag
+- You can also use [[tag_exampletag]] pattern replacement syntax
+
+#### Stacking and fill
+- When stacking is enabled it is important that points align
+- If there are missing points for one series it can cause gaps or missing bars
+- You must use fill(0), and select a group by time low limit
+- Use the group by time option below your queries and specify for example &gt;10s if your metrics are written every 10 seconds
+- This will insert zeros for series that are missing measurements and will make stacking work properly
+
+#### Group by time
+- Group by time is important, otherwise the query could return many thousands of datapoints that will slow down Grafana
+- Leave the group by time field empty for each query and it will be calculated based on time range and pixel width of the graph
+- If you use fill(0) or fill(null) set a low limit for the auto group by time interval
+- The low limit can only be set in the group by time option below your queries
+- You set a low limit by adding a greater sign before the interval
+- Example: &gt;60s if you write metrics to InfluxDB every 60 seconds

public/test/core/utils/kbn_specs.js

@@ -143,8 +143,8 @@ define([
       expect(res.intervalMs).to.be(500);
     });
 
-    it('fixed user interval', function() {
-      var range = { from: dateMath.parse('now-10m'), to: dateMath.parse('now') };
+    it('fixed user min interval', function() {
+      var range = {from: dateMath.parse('now-10m'), to: dateMath.parse('now')};
       var res = kbn.calculateInterval(range, 1600, '10s');
       expect(res.interval).to.be('10s');
       expect(res.intervalMs).to.be(10000);