[installation-telemetry]: get installationAdmin data from server

Author: Simon Emms

components/installation-telemetry/cmd/send.go

@@ -9,6 +9,8 @@ import (
 	"os"
 
 	"github.com/gitpod-io/gitpod/common-go/log"
+	"github.com/gitpod-io/gitpod/installation-telemetry/pkg/common"
+	"github.com/gitpod-io/gitpod/installation-telemetry/pkg/server"
 	"github.com/spf13/cobra"
 	"gopkg.in/segmentio/analytics-go.v3"
 )
@@ -19,9 +21,17 @@ var sendCmd = &cobra.Command{
 	Use:   "send",
 	Short: "Sends telemetry data",
 	RunE: func(cmd *cobra.Command, args []string) (err error) {
-		// @todo(sje): replace with a database call to get status
-		canSendData := false
-		if !canSendData {
+		config, err := common.NewConfig()
+		if err != nil {
+			return err
+		}
+
+		data, err := server.GetInstallationAdminData(*config)
+		if err != nil {
+			return err
+		}
+
+		if !data.SendTelemetry {
 			log.Info("installation-telemetry is not permitted to send - exiting")
 			return nil
 		}

components/installation-telemetry/pkg/common/config.go

@@ -0,0 +1,22 @@
+package common
+
+import (
+	"fmt"
+	"os"
+)
+
+type Config struct {
+	Server string
+}
+
+func NewConfig() (*Config, error) {
+	config := Config{
+		Server: os.Getenv("SERVER_URL"),
+	}
+
+	if config.Server == "" {
+		return nil, fmt.Errorf("SERVER_URL required")
+	}
+
+	return &config, nil
+}

components/installation-telemetry/pkg/server/installationAdmin.go

@@ -0,0 +1,35 @@
+package server
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+
+	"github.com/gitpod-io/gitpod/installation-telemetry/pkg/common"
+)
+
+type InstallationAdminData struct {
+	SendTelemetry bool `json:"sendTelemetry"`
+}
+
+func GetInstallationAdminData(config common.Config) (*InstallationAdminData, error) {
+	resp, err := http.Get(fmt.Sprintf("%s/installation-admin/data", config.Server))
+	if err != nil {
+		return nil, err
+	}
+
+	defer resp.Body.Close()
+
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return nil, err
+	}
+
+	var data InstallationAdminData
+	if err := json.Unmarshal(body, &data); err != nil {
+		return nil, err
+	}
+
+	return &data, nil
+}