mirror of
https://github.com/grafana/grafana.git
synced 2026-01-09 05:27:45 +08:00
azuremonitor: refactor azure monitor api code into own file
This commit is contained in:
Daniel Lee
266
pkg/tsdb/azuremonitor/azuremonitor-datasource.go
Normal file
266
pkg/tsdb/azuremonitor/azuremonitor-datasource.go
Normal file
@@ -0,0 +1,266 @@
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package azuremonitor
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/url"
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"path"
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"strings"
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"time"
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"github.com/grafana/grafana/pkg/api/pluginproxy"
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"github.com/grafana/grafana/pkg/models"
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"github.com/grafana/grafana/pkg/plugins"
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"github.com/grafana/grafana/pkg/setting"
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opentracing "github.com/opentracing/opentracing-go"
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"golang.org/x/net/context/ctxhttp"
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"github.com/grafana/grafana/pkg/components/null"
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"github.com/grafana/grafana/pkg/components/simplejson"
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"github.com/grafana/grafana/pkg/tsdb"
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)
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type AzureMonitorDatasource struct {
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httpClient *http.Client
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dsInfo *models.DataSource
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}
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func (e *AzureMonitorDatasource) executeTimeSeriesQuery(ctx context.Context, originalQueries []*tsdb.Query, timeRange *tsdb.TimeRange) (*tsdb.Response, error) {
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result := &tsdb.Response{
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Results: make(map[string]*tsdb.QueryResult),
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}
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queries, err := e.buildQueries(originalQueries, timeRange)
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if err != nil {
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return nil, err
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}
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for _, query := range queries {
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queryRes, resp, err := e.executeQuery(ctx, query, originalQueries, timeRange)
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if err != nil {
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return nil, err
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}
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azlog.Debug("AzureMonitor", "Response", resp)
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err = e.parseResponse(queryRes, resp, query)
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if err != nil {
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queryRes.Error = err
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}
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result.Results[query.RefID] = queryRes
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}
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return result, nil
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}
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func (e *AzureMonitorDatasource) buildQueries(queries []*tsdb.Query, timeRange *tsdb.TimeRange) ([]*AzureMonitorQuery, error) {
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azureMonitorQueries := []*AzureMonitorQuery{}
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startTime, err := timeRange.ParseFrom()
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if err != nil {
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return nil, err
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}
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endTime, err := timeRange.ParseTo()
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if err != nil {
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return nil, err
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}
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for _, query := range queries {
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var target string
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azureMonitorTarget := query.Model.Get("azureMonitor").MustMap()
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azlog.Debug("AzureMonitor", "target", azureMonitorTarget)
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urlComponents := make(map[string]string)
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urlComponents["resourceGroup"] = fmt.Sprintf("%v", azureMonitorTarget["resourceGroup"])
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urlComponents["metricDefinition"] = fmt.Sprintf("%v", azureMonitorTarget["metricDefinition"])
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urlComponents["resourceName"] = fmt.Sprintf("%v", azureMonitorTarget["resourceName"])
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ub := URLBuilder{
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ResourceGroup: urlComponents["resourceGroup"],
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MetricDefinition: urlComponents["metricDefinition"],
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ResourceName: urlComponents["resourceName"],
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}
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azureURL := ub.Build()
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alias := fmt.Sprintf("%v", azureMonitorTarget["alias"])
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params := url.Values{}
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params.Add("api-version", "2018-01-01")
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params.Add("timespan", fmt.Sprintf("%v/%v", startTime.UTC().Format(time.RFC3339), endTime.UTC().Format(time.RFC3339)))
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params.Add("interval", fmt.Sprintf("%v", azureMonitorTarget["timeGrain"]))
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params.Add("aggregation", fmt.Sprintf("%v", azureMonitorTarget["aggregation"]))
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params.Add("metricnames", fmt.Sprintf("%v", azureMonitorTarget["metricName"]))
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dimension := fmt.Sprintf("%v", azureMonitorTarget["dimension"])
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dimensionFilter := strings.TrimSpace(fmt.Sprintf("%v", azureMonitorTarget["dimensionFilter"]))
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if azureMonitorTarget["dimension"] != nil && azureMonitorTarget["dimensionFilter"] != nil && dimensionFilter != "" {
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params.Add("$filter", fmt.Sprintf("%s eq '%s'", dimension, dimensionFilter))
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}
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target = params.Encode()
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if setting.Env == setting.DEV {
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azlog.Debug("Azuremonitor request", "params", params)
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}
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azureMonitorQueries = append(azureMonitorQueries, &AzureMonitorQuery{
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URL: azureURL,
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UrlComponents: urlComponents,
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Target: target,
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Params: params,
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RefID: query.RefId,
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Alias: alias,
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})
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}
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return azureMonitorQueries, nil
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}
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func (e *AzureMonitorDatasource) executeQuery(ctx context.Context, query *AzureMonitorQuery, queries []*tsdb.Query, timeRange *tsdb.TimeRange) (*tsdb.QueryResult, AzureMonitorResponse, error) {
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queryResult := &tsdb.QueryResult{Meta: simplejson.New(), RefId: query.RefID}
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req, err := e.createRequest(ctx, e.dsInfo)
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if err != nil {
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queryResult.Error = err
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return queryResult, AzureMonitorResponse{}, nil
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}
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req.URL.Path = path.Join(req.URL.Path, query.URL)
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req.URL.RawQuery = query.Params.Encode()
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queryResult.Meta.Set("rawQuery", req.URL.RawQuery)
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span, ctx := opentracing.StartSpanFromContext(ctx, "azuremonitor query")
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span.SetTag("target", query.Target)
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span.SetTag("from", timeRange.From)
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span.SetTag("until", timeRange.To)
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span.SetTag("datasource_id", e.dsInfo.Id)
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span.SetTag("org_id", e.dsInfo.OrgId)
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defer span.Finish()
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opentracing.GlobalTracer().Inject(
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span.Context(),
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opentracing.HTTPHeaders,
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opentracing.HTTPHeadersCarrier(req.Header))
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azlog.Debug("AzureMonitor", "Request URL", req.URL.String())
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res, err := ctxhttp.Do(ctx, e.httpClient, req)
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if err != nil {
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queryResult.Error = err
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return queryResult, AzureMonitorResponse{}, nil
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}
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data, err := e.unmarshalResponse(res)
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if err != nil {
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queryResult.Error = err
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return queryResult, AzureMonitorResponse{}, nil
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}
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return queryResult, data, nil
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}
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func (e *AzureMonitorDatasource) createRequest(ctx context.Context, dsInfo *models.DataSource) (*http.Request, error) {
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// find plugin
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plugin, ok := plugins.DataSources[dsInfo.Type]
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if !ok {
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return nil, errors.New("Unable to find datasource plugin Azure Monitor")
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}
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var azureMonitorRoute *plugins.AppPluginRoute
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for _, route := range plugin.Routes {
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if route.Path == "azuremonitor" {
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azureMonitorRoute = route
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break
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}
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}
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cloudName := dsInfo.JsonData.Get("cloudName").MustString("azuremonitor")
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subscriptionID := dsInfo.JsonData.Get("subscriptionId").MustString()
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proxyPass := fmt.Sprintf("%s/subscriptions/%s", cloudName, subscriptionID)
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u, _ := url.Parse(dsInfo.Url)
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u.Path = path.Join(u.Path, "render")
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req, err := http.NewRequest(http.MethodGet, u.String(), nil)
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if err != nil {
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azlog.Error("Failed to create request", "error", err)
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return nil, fmt.Errorf("Failed to create request. error: %v", err)
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}
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("User-Agent", fmt.Sprintf("Grafana/%s", setting.BuildVersion))
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pluginproxy.ApplyRoute(ctx, req, proxyPass, azureMonitorRoute, dsInfo)
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return req, nil
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}
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func (e *AzureMonitorDatasource) unmarshalResponse(res *http.Response) (AzureMonitorResponse, error) {
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body, err := ioutil.ReadAll(res.Body)
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defer res.Body.Close()
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if err != nil {
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return AzureMonitorResponse{}, err
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}
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if res.StatusCode/100 != 2 {
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azlog.Error("Request failed", "status", res.Status, "body", string(body))
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return AzureMonitorResponse{}, fmt.Errorf(string(body))
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}
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var data AzureMonitorResponse
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err = json.Unmarshal(body, &data)
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if err != nil {
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azlog.Error("Failed to unmarshal AzureMonitor response", "error", err, "status", res.Status, "body", string(body))
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return AzureMonitorResponse{}, err
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}
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return data, nil
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}
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func (e *AzureMonitorDatasource) parseResponse(queryRes *tsdb.QueryResult, data AzureMonitorResponse, query *AzureMonitorQuery) error {
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if len(data.Value) == 0 {
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return nil
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}
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for _, series := range data.Value[0].Timeseries {
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points := make([]tsdb.TimePoint, 0)
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metadataName := ""
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metadataValue := ""
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if len(series.Metadatavalues) > 0 {
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metadataName = series.Metadatavalues[0].Name.LocalizedValue
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metadataValue = series.Metadatavalues[0].Value
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}
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defaultMetricName := formatLegendKey(query.UrlComponents["resourceName"], data.Value[0].Name.LocalizedValue, metadataName, metadataValue)
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for _, point := range series.Data {
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var value float64
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switch query.Params.Get("aggregation") {
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case "Average":
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value = point.Average
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case "Total":
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value = point.Total
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case "Maximum":
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value = point.Maximum
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case "Minimum":
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value = point.Minimum
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case "Count":
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value = point.Count
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default:
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value = point.Count
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}
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points = append(points, tsdb.NewTimePoint(null.FloatFrom(value), float64((point.TimeStamp).Unix())*1000))
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}
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queryRes.Series = append(queryRes.Series, &tsdb.TimeSeries{
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Name: defaultMetricName,
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Points: points,
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})
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}
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return nil
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}
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@@ -14,9 +14,9 @@ import (
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. "github.com/smartystreets/goconvey/convey"
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)
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func TestAzureMonitor(t *testing.T) {
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Convey("AzureMonitor", t, func() {
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executor := &AzureMonitorExecutor{}
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func TestAzureMonitorDatasource(t *testing.T) {
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Convey("AzureMonitorDatasource", t, func() {
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executor := &AzureMonitorDatasource{}
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Convey("Parse queries from frontend and build AzureMonitor API queries", func() {
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fromStart := time.Date(2018, 3, 15, 13, 0, 0, 0, time.UTC).In(time.Local)
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@@ -44,7 +44,7 @@ func TestAzureMonitor(t *testing.T) {
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},
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}
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Convey("and is a normal query", func() {
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queries, err := executor.buildQueries(tsdbQuery)
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queries, err := executor.buildQueries(tsdbQuery.Queries, tsdbQuery.TimeRange)
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So(err, ShouldBeNil)
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So(len(queries), ShouldEqual, 1)
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@@ -2,26 +2,12 @@ package azuremonitor
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import (
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"context"
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"encoding/json"
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"errors"
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"fmt"
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"io/ioutil"
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"net/http"
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"net/url"
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"path"
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"strings"
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"time"
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"github.com/grafana/grafana/pkg/api/pluginproxy"
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"github.com/grafana/grafana/pkg/components/null"
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"github.com/grafana/grafana/pkg/components/simplejson"
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"github.com/grafana/grafana/pkg/log"
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"github.com/grafana/grafana/pkg/models"
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"github.com/grafana/grafana/pkg/plugins"
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"github.com/grafana/grafana/pkg/setting"
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"github.com/grafana/grafana/pkg/tsdb"
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"github.com/opentracing/opentracing-go"
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"golang.org/x/net/context/ctxhttp"
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)
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var (
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@@ -59,250 +45,26 @@ func init() {
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func (e *AzureMonitorExecutor) Query(ctx context.Context, dsInfo *models.DataSource, tsdbQuery *tsdb.TsdbQuery) (*tsdb.Response, error) {
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var result *tsdb.Response
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var err error
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queryType := tsdbQuery.Queries[0].Model.Get("queryType").MustString("")
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switch queryType {
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case "Azure Monitor":
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fallthrough
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default:
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result, err = e.executeTimeSeriesQuery(ctx, tsdbQuery)
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azureMonitorQueries := make([]*tsdb.Query, 0)
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for _, query := range tsdbQuery.Queries {
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queryType := query.Model.Get("queryType").MustString("")
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switch queryType {
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case "Azure Monitor":
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azureMonitorQueries = append(azureMonitorQueries, query)
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default:
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return nil, fmt.Errorf("Alerting not supported for %s", queryType)
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}
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}
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azDatasource := &AzureMonitorDatasource{
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httpClient: e.httpClient,
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dsInfo: e.dsInfo,
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}
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result, err = azDatasource.executeTimeSeriesQuery(ctx, azureMonitorQueries, tsdbQuery.TimeRange)
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return result, err
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}
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func (e *AzureMonitorExecutor) executeTimeSeriesQuery(ctx context.Context, tsdbQuery *tsdb.TsdbQuery) (*tsdb.Response, error) {
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result := &tsdb.Response{
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Results: make(map[string]*tsdb.QueryResult),
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}
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queries, err := e.buildQueries(tsdbQuery)
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if err != nil {
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return nil, err
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}
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for _, query := range queries {
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queryRes, resp, err := e.executeQuery(ctx, query, tsdbQuery)
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if err != nil {
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return nil, err
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}
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err = e.parseResponse(queryRes, resp, query)
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if err != nil {
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queryRes.Error = err
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}
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result.Results[query.RefID] = queryRes
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}
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return result, nil
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}
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func (e *AzureMonitorExecutor) buildQueries(tsdbQuery *tsdb.TsdbQuery) ([]*AzureMonitorQuery, error) {
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azureMonitorQueries := []*AzureMonitorQuery{}
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startTime, err := tsdbQuery.TimeRange.ParseFrom()
|
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if err != nil {
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return nil, err
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}
|
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|
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endTime, err := tsdbQuery.TimeRange.ParseTo()
|
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if err != nil {
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return nil, err
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}
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|
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for _, query := range tsdbQuery.Queries {
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var target string
|
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|
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azureMonitorTarget := query.Model.Get("azureMonitor").MustMap()
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azlog.Debug("AzureMonitor", "target", azureMonitorTarget)
|
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|
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urlComponents := make(map[string]string)
|
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urlComponents["resourceGroup"] = fmt.Sprintf("%v", azureMonitorTarget["resourceGroup"])
|
||||
urlComponents["metricDefinition"] = fmt.Sprintf("%v", azureMonitorTarget["metricDefinition"])
|
||||
urlComponents["resourceName"] = fmt.Sprintf("%v", azureMonitorTarget["resourceName"])
|
||||
|
||||
ub := URLBuilder{
|
||||
ResourceGroup: urlComponents["resourceGroup"],
|
||||
MetricDefinition: urlComponents["metricDefinition"],
|
||||
ResourceName: urlComponents["resourceName"],
|
||||
}
|
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azureURL := ub.Build()
|
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|
||||
alias := fmt.Sprintf("%v", azureMonitorTarget["alias"])
|
||||
|
||||
params := url.Values{}
|
||||
params.Add("api-version", "2018-01-01")
|
||||
params.Add("timespan", fmt.Sprintf("%v/%v", startTime.UTC().Format(time.RFC3339), endTime.UTC().Format(time.RFC3339)))
|
||||
params.Add("interval", fmt.Sprintf("%v", azureMonitorTarget["timeGrain"]))
|
||||
params.Add("aggregation", fmt.Sprintf("%v", azureMonitorTarget["aggregation"]))
|
||||
params.Add("metricnames", fmt.Sprintf("%v", azureMonitorTarget["metricName"]))
|
||||
|
||||
dimension := fmt.Sprintf("%v", azureMonitorTarget["dimension"])
|
||||
dimensionFilter := strings.TrimSpace(fmt.Sprintf("%v", azureMonitorTarget["dimensionFilter"]))
|
||||
if azureMonitorTarget["dimension"] != nil && azureMonitorTarget["dimensionFilter"] != nil && dimensionFilter != "" {
|
||||
params.Add("$filter", fmt.Sprintf("%s eq '%s'", dimension, dimensionFilter))
|
||||
}
|
||||
|
||||
target = params.Encode()
|
||||
|
||||
if setting.Env == setting.DEV {
|
||||
azlog.Debug("Azuremonitor request", "params", params)
|
||||
}
|
||||
|
||||
azureMonitorQueries = append(azureMonitorQueries, &AzureMonitorQuery{
|
||||
URL: azureURL,
|
||||
UrlComponents: urlComponents,
|
||||
Target: target,
|
||||
Params: params,
|
||||
RefID: query.RefId,
|
||||
Alias: alias,
|
||||
})
|
||||
}
|
||||
|
||||
return azureMonitorQueries, nil
|
||||
}
|
||||
|
||||
func (e *AzureMonitorExecutor) executeQuery(ctx context.Context, query *AzureMonitorQuery, tsdbQuery *tsdb.TsdbQuery) (*tsdb.QueryResult, AzureMonitorResponse, error) {
|
||||
queryResult := &tsdb.QueryResult{Meta: simplejson.New(), RefId: query.RefID}
|
||||
|
||||
req, err := e.createRequest(ctx, e.dsInfo)
|
||||
if err != nil {
|
||||
queryResult.Error = err
|
||||
return queryResult, AzureMonitorResponse{}, nil
|
||||
}
|
||||
|
||||
req.URL.Path = path.Join(req.URL.Path, query.URL)
|
||||
req.URL.RawQuery = query.Params.Encode()
|
||||
queryResult.Meta.Set("rawQuery", req.URL.RawQuery)
|
||||
|
||||
span, ctx := opentracing.StartSpanFromContext(ctx, "azuremonitor query")
|
||||
span.SetTag("target", query.Target)
|
||||
span.SetTag("from", tsdbQuery.TimeRange.From)
|
||||
span.SetTag("until", tsdbQuery.TimeRange.To)
|
||||
span.SetTag("datasource_id", e.dsInfo.Id)
|
||||
span.SetTag("org_id", e.dsInfo.OrgId)
|
||||
|
||||
defer span.Finish()
|
||||
|
||||
opentracing.GlobalTracer().Inject(
|
||||
span.Context(),
|
||||
opentracing.HTTPHeaders,
|
||||
opentracing.HTTPHeadersCarrier(req.Header))
|
||||
|
||||
azlog.Debug("AzureMonitor", "Request URL", req.URL.String())
|
||||
res, err := ctxhttp.Do(ctx, e.httpClient, req)
|
||||
if err != nil {
|
||||
queryResult.Error = err
|
||||
return queryResult, AzureMonitorResponse{}, nil
|
||||
}
|
||||
|
||||
data, err := e.unmarshalResponse(res)
|
||||
if err != nil {
|
||||
queryResult.Error = err
|
||||
return queryResult, AzureMonitorResponse{}, nil
|
||||
}
|
||||
|
||||
return queryResult, data, nil
|
||||
}
|
||||
|
||||
func (e *AzureMonitorExecutor) createRequest(ctx context.Context, dsInfo *models.DataSource) (*http.Request, error) {
|
||||
// find plugin
|
||||
plugin, ok := plugins.DataSources[dsInfo.Type]
|
||||
if !ok {
|
||||
return nil, errors.New("Unable to find datasource plugin Azure Monitor")
|
||||
}
|
||||
|
||||
var azureMonitorRoute *plugins.AppPluginRoute
|
||||
for _, route := range plugin.Routes {
|
||||
if route.Path == "azuremonitor" {
|
||||
azureMonitorRoute = route
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
cloudName := dsInfo.JsonData.Get("cloudName").MustString("azuremonitor")
|
||||
subscriptionID := dsInfo.JsonData.Get("subscriptionId").MustString()
|
||||
proxyPass := fmt.Sprintf("%s/subscriptions/%s", cloudName, subscriptionID)
|
||||
|
||||
u, _ := url.Parse(dsInfo.Url)
|
||||
u.Path = path.Join(u.Path, "render")
|
||||
|
||||
req, err := http.NewRequest(http.MethodGet, u.String(), nil)
|
||||
if err != nil {
|
||||
azlog.Error("Failed to create request", "error", err)
|
||||
return nil, fmt.Errorf("Failed to create request. error: %v", err)
|
||||
}
|
||||
|
||||
req.Header.Set("Content-Type", "application/json")
|
||||
req.Header.Set("User-Agent", fmt.Sprintf("Grafana/%s", setting.BuildVersion))
|
||||
|
||||
pluginproxy.ApplyRoute(ctx, req, proxyPass, azureMonitorRoute, dsInfo)
|
||||
|
||||
return req, nil
|
||||
}
|
||||
|
||||
func (e *AzureMonitorExecutor) unmarshalResponse(res *http.Response) (AzureMonitorResponse, error) {
|
||||
body, err := ioutil.ReadAll(res.Body)
|
||||
defer res.Body.Close()
|
||||
if err != nil {
|
||||
return AzureMonitorResponse{}, err
|
||||
}
|
||||
|
||||
if res.StatusCode/100 != 2 {
|
||||
azlog.Error("Request failed", "status", res.Status, "body", string(body))
|
||||
return AzureMonitorResponse{}, fmt.Errorf(string(body))
|
||||
}
|
||||
|
||||
var data AzureMonitorResponse
|
||||
err = json.Unmarshal(body, &data)
|
||||
if err != nil {
|
||||
azlog.Error("Failed to unmarshal AzureMonitor response", "error", err, "status", res.Status, "body", string(body))
|
||||
return AzureMonitorResponse{}, err
|
||||
}
|
||||
|
||||
return data, nil
|
||||
}
|
||||
|
||||
func (e *AzureMonitorExecutor) parseResponse(queryRes *tsdb.QueryResult, data AzureMonitorResponse, query *AzureMonitorQuery) error {
|
||||
azlog.Debug("AzureMonitor", "Response", data)
|
||||
|
||||
if len(data.Value) == 0 {
|
||||
return nil
|
||||
}
|
||||
|
||||
for _, series := range data.Value[0].Timeseries {
|
||||
points := make([]tsdb.TimePoint, 0)
|
||||
|
||||
metadataName := ""
|
||||
metadataValue := ""
|
||||
if len(series.Metadatavalues) > 0 {
|
||||
metadataName = series.Metadatavalues[0].Name.LocalizedValue
|
||||
metadataValue = series.Metadatavalues[0].Value
|
||||
}
|
||||
defaultMetricName := formatLegendKey(query.UrlComponents["resourceName"], data.Value[0].Name.LocalizedValue, metadataName, metadataValue)
|
||||
|
||||
for _, point := range series.Data {
|
||||
var value float64
|
||||
switch query.Params.Get("aggregation") {
|
||||
case "Average":
|
||||
value = point.Average
|
||||
case "Total":
|
||||
value = point.Total
|
||||
case "Maximum":
|
||||
value = point.Maximum
|
||||
case "Minimum":
|
||||
value = point.Minimum
|
||||
case "Count":
|
||||
value = point.Count
|
||||
default:
|
||||
value = point.Count
|
||||
}
|
||||
points = append(points, tsdb.NewTimePoint(null.FloatFrom(value), float64((point.TimeStamp).Unix())*1000))
|
||||
}
|
||||
|
||||
queryRes.Series = append(queryRes.Series, &tsdb.TimeSeries{
|
||||
Name: defaultMetricName,
|
||||
Points: points,
|
||||
})
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user