mirror of https://github.com/grafana/grafana.git
572 lines
16 KiB
Go
572 lines
16 KiB
Go
package query
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import (
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"bytes"
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"context"
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"errors"
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"fmt"
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"net/http"
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"net/http/httptest"
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"sync"
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"testing"
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"time"
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"github.com/grafana/grafana-plugin-sdk-go/backend"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"github.com/grafana/grafana/pkg/api/dtos"
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"github.com/grafana/grafana/pkg/components/simplejson"
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"github.com/grafana/grafana/pkg/expr"
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"github.com/grafana/grafana/pkg/infra/db"
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"github.com/grafana/grafana/pkg/infra/localcache"
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"github.com/grafana/grafana/pkg/infra/log"
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"github.com/grafana/grafana/pkg/infra/tracing"
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"github.com/grafana/grafana/pkg/models/roletype"
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"github.com/grafana/grafana/pkg/plugins"
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"github.com/grafana/grafana/pkg/plugins/config"
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pluginFakes "github.com/grafana/grafana/pkg/plugins/manager/fakes"
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"github.com/grafana/grafana/pkg/services/auth/identity"
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"github.com/grafana/grafana/pkg/services/contexthandler"
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"github.com/grafana/grafana/pkg/services/contexthandler/ctxkey"
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contextmodel "github.com/grafana/grafana/pkg/services/contexthandler/model"
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"github.com/grafana/grafana/pkg/services/datasources"
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fakeDatasources "github.com/grafana/grafana/pkg/services/datasources/fakes"
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"github.com/grafana/grafana/pkg/services/featuremgmt"
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"github.com/grafana/grafana/pkg/services/pluginsintegration/plugincontext"
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pluginSettings "github.com/grafana/grafana/pkg/services/pluginsintegration/pluginsettings/service"
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"github.com/grafana/grafana/pkg/services/pluginsintegration/pluginstore"
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"github.com/grafana/grafana/pkg/services/secrets/fakes"
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secretskvs "github.com/grafana/grafana/pkg/services/secrets/kvstore"
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secretsmng "github.com/grafana/grafana/pkg/services/secrets/manager"
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"github.com/grafana/grafana/pkg/services/user"
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"github.com/grafana/grafana/pkg/setting"
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"github.com/grafana/grafana/pkg/web"
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)
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func TestParseMetricRequest(t *testing.T) {
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t.Run("Test a simple single datasource query", func(t *testing.T) {
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tc := setup(t)
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mr := metricRequestWithQueries(t, `{
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"refId": "A",
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"datasource": {
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"uid": "gIEkMvIVz",
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"type": "postgres"
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}
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}`, `{
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"refId": "B",
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"datasource": {
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"uid": "gIEkMvIVz",
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"type": "postgres"
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}
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}`)
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parsedReq, err := tc.queryService.parseMetricRequest(context.Background(), tc.signedInUser, true, mr)
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require.NoError(t, err)
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require.NotNil(t, parsedReq)
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assert.False(t, parsedReq.hasExpression)
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assert.Len(t, parsedReq.parsedQueries, 1)
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assert.Contains(t, parsedReq.parsedQueries, "gIEkMvIVz")
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assert.Len(t, parsedReq.getFlattenedQueries(), 2)
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})
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t.Run("Test a single datasource query with expressions", func(t *testing.T) {
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tc := setup(t)
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mr := metricRequestWithQueries(t, `{
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"refId": "A",
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"datasource": {
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"uid": "gIEkMvIVz",
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"type": "postgres"
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}
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}`, `{
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"refId": "B",
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"datasource": {
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"type": "__expr__",
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"uid": "__expr__",
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"name": "Expression"
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},
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"type": "math",
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"expression": "$A - 50"
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}`)
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parsedReq, err := tc.queryService.parseMetricRequest(context.Background(), tc.signedInUser, true, mr)
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require.NoError(t, err)
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require.NotNil(t, parsedReq)
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require.True(t, parsedReq.hasExpression)
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require.Len(t, parsedReq.parsedQueries, 2)
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require.Contains(t, parsedReq.parsedQueries, "gIEkMvIVz")
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require.Len(t, parsedReq.getFlattenedQueries(), 2)
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// Make sure we end up with something valid
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_, err = tc.queryService.handleExpressions(context.Background(), tc.signedInUser, parsedReq)
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require.NoError(t, err)
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t.Run("Should forward user and org ID to QueryData from expression request", func(t *testing.T) {
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require.NotNil(t, tc.pluginContext.req)
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require.NotNil(t, tc.pluginContext.req.PluginContext.User)
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require.Equal(t, tc.signedInUser.Login, tc.pluginContext.req.PluginContext.User.Login)
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require.Equal(t, tc.signedInUser.Name, tc.pluginContext.req.PluginContext.User.Name)
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require.Equal(t, tc.signedInUser.Email, tc.pluginContext.req.PluginContext.User.Email)
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require.Equal(t, string(tc.signedInUser.OrgRole), tc.pluginContext.req.PluginContext.User.Role)
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require.Equal(t, tc.signedInUser.OrgID, tc.pluginContext.req.PluginContext.OrgID)
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})
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})
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t.Run("Test a simple mixed datasource query", func(t *testing.T) {
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tc := setup(t)
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mr := metricRequestWithQueries(t, `{
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"refId": "A",
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"datasource": {
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"uid": "gIEkMvIVz",
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"type": "postgres"
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}
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}`, `{
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"refId": "B",
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"datasource": {
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"uid": "sEx6ZvSVk",
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"type": "testdata"
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}
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}`, `{
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"refId": "C",
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"datasource": {
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"uid": "sEx6ZvSVk",
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"type": "testdata"
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}
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}`)
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parsedReq, err := tc.queryService.parseMetricRequest(context.Background(), tc.signedInUser, true, mr)
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require.NoError(t, err)
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require.NotNil(t, parsedReq)
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assert.False(t, parsedReq.hasExpression)
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assert.Len(t, parsedReq.parsedQueries, 2)
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assert.Contains(t, parsedReq.parsedQueries, "gIEkMvIVz")
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assert.Len(t, parsedReq.parsedQueries["gIEkMvIVz"], 1)
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assert.Contains(t, parsedReq.parsedQueries, "sEx6ZvSVk")
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assert.Len(t, parsedReq.parsedQueries["sEx6ZvSVk"], 2)
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assert.Len(t, parsedReq.getFlattenedQueries(), 3)
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})
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t.Run("Test a mixed datasource query with expressions", func(t *testing.T) {
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tc := setup(t)
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mr := metricRequestWithQueries(t, `{
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"refId": "A",
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"datasource": {
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"uid": "gIEkMvIVz",
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"type": "postgres"
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}
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}`, `{
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"refId": "B",
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"datasource": {
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"uid": "sEx6ZvSVk",
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"type": "testdata"
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}
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}`, `{
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"refId": "A_resample",
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"datasource": {
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"type": "__expr__",
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"uid": "__expr__",
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"name": "Expression"
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},
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"expression": "A",
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"type": "resample",
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"downsampler": "mean",
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"upsampler": "fillna",
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"window": "10s"
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}`, `{
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"refId": "B_resample",
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"datasource": {
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"type": "__expr__",
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"uid": "__expr__",
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"name": "Expression"
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},
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"expression": "B",
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"type": "resample",
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"downsampler": "mean",
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"upsampler": "fillna",
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"window": "10s"
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}`, `{
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"refId": "C",
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"datasource": {
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"type": "__expr__",
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"uid": "__expr__",
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"name": "Expression"
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},
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"type": "math",
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"expression": "$A_resample + $B_resample"
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}`)
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parsedReq, err := tc.queryService.parseMetricRequest(context.Background(), tc.signedInUser, true, mr)
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require.NoError(t, err)
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require.NotNil(t, parsedReq)
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assert.True(t, parsedReq.hasExpression)
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assert.Len(t, parsedReq.parsedQueries, 3)
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assert.Contains(t, parsedReq.parsedQueries, "gIEkMvIVz")
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assert.Contains(t, parsedReq.parsedQueries, "sEx6ZvSVk")
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assert.Len(t, parsedReq.getFlattenedQueries(), 5)
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// Make sure we end up with something valid
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_, err = tc.queryService.handleExpressions(context.Background(), tc.signedInUser, parsedReq)
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assert.NoError(t, err)
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})
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t.Run("Header validation", func(t *testing.T) {
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tc := setup(t)
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mr := metricRequestWithQueries(t, `{
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"refId": "A",
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"datasource": {
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"uid": "gIEkMvIVz",
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"type": "postgres"
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}
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}`, `{
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"refId": "B",
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"datasource": {
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"uid": "sEx6ZvSVk",
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"type": "testdata"
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}
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}`)
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httpreq, err := http.NewRequest(http.MethodPost, "http://localhost/", bytes.NewReader([]byte{}))
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require.NoError(t, err)
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reqCtx := &contextmodel.ReqContext{
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Context: &web.Context{},
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}
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ctx := ctxkey.Set(context.Background(), reqCtx)
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*httpreq = *httpreq.WithContext(ctx)
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reqCtx.Req = httpreq
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httpreq.Header.Add("X-Datasource-Uid", "gIEkMvIVz")
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_, err = tc.queryService.parseMetricRequest(httpreq.Context(), tc.signedInUser, true, mr)
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require.NoError(t, err)
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// With the second value it is OK
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httpreq.Header.Add("X-Datasource-Uid", "sEx6ZvSVk")
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_, err = tc.queryService.parseMetricRequest(httpreq.Context(), tc.signedInUser, true, mr)
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require.NoError(t, err)
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// Single header with comma syntax
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httpreq, _ = http.NewRequest(http.MethodPost, "http://localhost/", bytes.NewReader([]byte{}))
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httpreq.Header.Set("X-Datasource-Uid", "gIEkMvIVz, sEx6ZvSVk")
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_, err = tc.queryService.parseMetricRequest(httpreq.Context(), tc.signedInUser, true, mr)
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require.NoError(t, err)
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})
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t.Run("Test a duplicated refId", func(t *testing.T) {
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tc := setup(t)
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mr := metricRequestWithQueries(t, `{
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"refId": "A",
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"datasource": {
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"uid": "gIEkMvIVz",
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"type": "postgres"
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}
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}`, `{
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"refId": "A",
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"datasource": {
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"uid": "gIEkMvIVz",
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"type": "postgres"
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}
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}`)
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_, err := tc.queryService.parseMetricRequest(context.Background(), tc.signedInUser, true, mr)
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require.Error(t, err)
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})
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}
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func TestQueryDataMultipleSources(t *testing.T) {
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t.Run("can query multiple datasources", func(t *testing.T) {
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tc := setup(t)
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query1, err := simplejson.NewJson([]byte(`
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{
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"datasource": {
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"type": "mysql",
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"uid": "ds1"
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},
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"refId": "A"
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}
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`))
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require.NoError(t, err)
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query2, err := simplejson.NewJson([]byte(`
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{
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"datasource": {
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"type": "mysql",
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"uid": "ds2"
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},
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"refId": "B"
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}
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`))
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require.NoError(t, err)
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queries := []*simplejson.Json{query1, query2}
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reqDTO := dtos.MetricRequest{
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From: "2022-01-01",
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To: "2022-01-02",
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Queries: queries,
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Debug: false,
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}
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req, err := http.NewRequest("POST", "http://localhost:3000", nil)
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require.NoError(t, err)
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reqCtx := &contextmodel.ReqContext{
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SkipQueryCache: false,
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Context: &web.Context{
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Resp: web.NewResponseWriter(http.MethodGet, httptest.NewRecorder()),
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Req: req,
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},
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}
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ctx := ctxkey.Set(context.Background(), reqCtx)
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_, err = tc.queryService.QueryData(ctx, tc.signedInUser, true, reqDTO)
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require.NoError(t, err)
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// response headers should be merged
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header := contexthandler.FromContext(ctx).Resp.Header()
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assert.Len(t, header.Values("test"), 2)
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})
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t.Run("can query multiple datasources with an expression present", func(t *testing.T) {
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tc := setup(t)
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query1, err := simplejson.NewJson([]byte(`
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{
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"datasource": {
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"type": "mysql",
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"uid": "ds1"
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},
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"refId": "A"
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}
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`))
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require.NoError(t, err)
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query2, err := simplejson.NewJson([]byte(`
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{
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"datasource": {
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"type": "mysql",
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"uid": "ds2"
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},
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"refId": "B"
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}
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`))
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require.NoError(t, err)
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query3, err := simplejson.NewJson([]byte(`
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{
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"datasource": {
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"name": "Expression",
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"type": "__expr__",
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"uid": "__expr__"
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},
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"expression": "$A + 1",
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"hide": false,
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"refId": "EXPRESSION",
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"type": "math"
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}
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`))
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require.NoError(t, err)
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queries := []*simplejson.Json{query1, query2, query3}
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reqDTO := dtos.MetricRequest{
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From: "2022-01-01",
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To: "2022-01-02",
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Queries: queries,
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Debug: false,
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}
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// without query parameter
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_, err = tc.queryService.QueryData(context.Background(), tc.signedInUser, true, reqDTO)
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require.NoError(t, err)
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httpreq, err := http.NewRequest(http.MethodPost, "http://localhost/ds/query?expression=true", bytes.NewReader([]byte{}))
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require.NoError(t, err)
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reqCtx := &contextmodel.ReqContext{
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Context: &web.Context{},
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}
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ctx := ctxkey.Set(context.Background(), reqCtx)
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*httpreq = *httpreq.WithContext(ctx)
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reqCtx.Req = httpreq
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httpreq.Header.Add("X-Datasource-Uid", "gIEkMvIVz")
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// with query parameter
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_, err = tc.queryService.QueryData(httpreq.Context(), tc.signedInUser, true, reqDTO)
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require.NoError(t, err)
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})
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t.Run("error is returned in query when one of the queries fails", func(t *testing.T) {
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tc := setup(t)
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query1, _ := simplejson.NewJson([]byte(`
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{
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"datasource": {
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"type": "mysql",
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"uid": "ds1"
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},
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"refId": "A"
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}
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`))
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query2, _ := simplejson.NewJson([]byte(`
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{
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"datasource": {
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"type": "prometheus",
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"uid": "ds2"
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},
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"refId": "B",
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"queryType": "FAIL"
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}
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`))
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queries := []*simplejson.Json{query1, query2}
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reqDTO := dtos.MetricRequest{
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From: "2022-01-01",
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To: "2022-01-02",
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Queries: queries,
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Debug: false,
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}
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res, err := tc.queryService.QueryData(context.Background(), tc.signedInUser, true, reqDTO)
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require.NoError(t, err)
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require.Error(t, res.Responses["B"].Error)
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// Responses aren't mocked, so a "healthy" query will just return an empty response
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require.NotContains(t, res.Responses, "A")
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})
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t.Run("ignores a deprecated datasourceID", func(t *testing.T) {
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tc := setup(t)
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query1, err := simplejson.NewJson([]byte(`
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{
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"datasource": {
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"type": "mysql",
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"uid": "ds1"
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},
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"datasourceId": 1,
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"refId": "A"
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}
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`))
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require.NoError(t, err)
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queries := []*simplejson.Json{query1}
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reqDTO := dtos.MetricRequest{
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From: "2022-01-01",
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To: "2022-01-02",
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Queries: queries,
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Debug: false,
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}
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_, err = tc.queryService.QueryData(context.Background(), tc.signedInUser, true, reqDTO)
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require.NoError(t, err)
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})
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}
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func setup(t *testing.T) *testContext {
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dss := []*datasources.DataSource{
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{UID: "gIEkMvIVz", Type: "postgres"},
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{UID: "sEx6ZvSVk", Type: "testdata"},
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{UID: "ds1", Type: "mysql"},
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{UID: "ds2", Type: "mysql"},
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}
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t.Helper()
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pc := &fakePluginClient{}
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dc := &fakeDataSourceCache{cache: dss}
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rv := &fakePluginRequestValidator{}
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sqlStore := db.InitTestDB(t)
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secretsService := secretsmng.SetupTestService(t, fakes.NewFakeSecretsStore())
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ss := secretskvs.NewSQLSecretsKVStore(sqlStore, secretsService, log.New("test.logger"))
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fakeDatasourceService := &fakeDatasources.FakeDataSourceService{
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DataSources: dss,
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SimulatePluginFailure: false,
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}
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pCtxProvider := plugincontext.ProvideService(sqlStore.Cfg,
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localcache.ProvideService(), &pluginstore.FakePluginStore{
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PluginList: []pluginstore.Plugin{
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{JSONData: plugins.JSONData{ID: "postgres"}},
|
|
{JSONData: plugins.JSONData{ID: "testdata"}},
|
|
{JSONData: plugins.JSONData{ID: "mysql"}},
|
|
},
|
|
}, fakeDatasourceService,
|
|
pluginSettings.ProvideService(sqlStore, secretsService), pluginFakes.NewFakeLicensingService(), &config.Cfg{},
|
|
)
|
|
exprService := expr.ProvideService(&setting.Cfg{ExpressionsEnabled: true}, pc, pCtxProvider,
|
|
&featuremgmt.FeatureManager{}, nil, tracing.InitializeTracerForTest())
|
|
queryService := ProvideService(setting.NewCfg(), dc, exprService, rv, pc, pCtxProvider) // provider belonging to this package
|
|
return &testContext{
|
|
pluginContext: pc,
|
|
secretStore: ss,
|
|
pluginRequestValidator: rv,
|
|
queryService: queryService,
|
|
signedInUser: &user.SignedInUser{OrgID: 1, Login: "login", Name: "name", Email: "email", OrgRole: roletype.RoleAdmin},
|
|
}
|
|
}
|
|
|
|
type testContext struct {
|
|
pluginContext *fakePluginClient
|
|
secretStore secretskvs.SecretsKVStore
|
|
pluginRequestValidator *fakePluginRequestValidator
|
|
queryService *ServiceImpl // implementation belonging to this package
|
|
signedInUser *user.SignedInUser
|
|
}
|
|
|
|
func metricRequestWithQueries(t *testing.T, rawQueries ...string) dtos.MetricRequest {
|
|
t.Helper()
|
|
queries := make([]*simplejson.Json, 0)
|
|
for _, q := range rawQueries {
|
|
json, err := simplejson.NewJson([]byte(q))
|
|
require.NoError(t, err)
|
|
queries = append(queries, json)
|
|
}
|
|
return dtos.MetricRequest{
|
|
From: "now-1h",
|
|
To: "now",
|
|
Queries: queries,
|
|
Debug: false,
|
|
}
|
|
}
|
|
|
|
type fakePluginRequestValidator struct {
|
|
err error
|
|
}
|
|
|
|
func (rv *fakePluginRequestValidator) Validate(dsURL string, req *http.Request) error {
|
|
return rv.err
|
|
}
|
|
|
|
type fakeDataSourceCache struct {
|
|
cache []*datasources.DataSource
|
|
}
|
|
|
|
func (c *fakeDataSourceCache) GetDatasource(ctx context.Context, datasourceID int64, user identity.Requester, skipCache bool) (*datasources.DataSource, error) {
|
|
// deprecated: fake an error to ensure we are using GetDatasourceByUID
|
|
return nil, fmt.Errorf("not found")
|
|
}
|
|
|
|
func (c *fakeDataSourceCache) GetDatasourceByUID(ctx context.Context, datasourceUID string, user identity.Requester, skipCache bool) (*datasources.DataSource, error) {
|
|
for _, ds := range c.cache {
|
|
if ds.UID == datasourceUID {
|
|
return ds, nil
|
|
}
|
|
}
|
|
|
|
return nil, fmt.Errorf("not found")
|
|
}
|
|
|
|
type fakePluginClient struct {
|
|
plugins.Client
|
|
req *backend.QueryDataRequest
|
|
mu sync.Mutex
|
|
}
|
|
|
|
func (c *fakePluginClient) QueryData(ctx context.Context, req *backend.QueryDataRequest) (*backend.QueryDataResponse, error) {
|
|
c.mu.Lock()
|
|
defer c.mu.Unlock()
|
|
|
|
c.req = req
|
|
|
|
// If an expression query ends up getting directly queried, we want it to return an error in our test.
|
|
if req.PluginContext.PluginID == expr.DatasourceUID {
|
|
return nil, errors.New("cant query an expression datasource")
|
|
}
|
|
|
|
if req.Queries[0].QueryType == "FAIL" {
|
|
return nil, errors.New("plugin client failed")
|
|
}
|
|
|
|
if reqCtx := contexthandler.FromContext(ctx); reqCtx != nil && reqCtx.Resp != nil {
|
|
reqCtx.Resp.Header().Add("test", fmt.Sprintf("header-%d", time.Now().Nanosecond()))
|
|
}
|
|
|
|
return &backend.QueryDataResponse{Responses: make(backend.Responses)}, nil
|
|
}
|