Added fallback to "anonymous" if Consul Token is not set

README.md

@@ -3,7 +3,7 @@
 
 [![Travis](https://img.shields.io/travis/sbueringer/grafana-consul-datasource.svg)](https://travis-ci.org/sbueringer/grafana-consul-datasource)[![Codecov](https://img.shields.io/codecov/c/github/sbueringer/grafana-consul-datasource.svg)](https://codecov.io/gh/sbueringer/grafana-consul-datasource)[![CodeFactor](https://www.codefactor.io/repository/github/sbueringer/grafana-consul-datasource/badge)](https://www.codefactor.io/repository/github/sbueringer/grafana-consul-datasource)[![GoReportCard](https://goreportcard.com/badge/github.com/sbueringer/grafana-consul-datasource?style=plastic)](https://goreportcard.com/report/github.com/sbueringer/grafana-consul-datasource)[![GitHub release](https://img.shields.io/github/release/sbueringer/grafana-consul-datasource.svg)](https://github.com/sbueringer/grafana-consul-datasource/releases)
 
-[![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/sbueringer/consul-datasource/issues) 
+[![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/sbueringer/grafana-consul-datasource/issues) 
 
 This datasource lets you integrate key value data from Consul in Grafana dashboards.
 

datasource.go

@@ -356,7 +356,8 @@ type query struct {
 func newConsulFromReq(req *datasource.DatasourceRequest) (*api.Client, string, error) {
 	consulToken := req.Datasource.DecryptedSecureJsonData["consulToken"]
 	if consulToken == "" {
-		return nil, "", fmt.Errorf("unable to get consulToken")
+		// see https://www.consul.io/docs/acl/acl-system.html#acl-tokens
+		consulToken = "anonymous"
 	}
 
 	var jsonData map[string]interface{}

dist/README.md

@@ -3,7 +3,7 @@
 
 [![Travis](https://img.shields.io/travis/sbueringer/grafana-consul-datasource.svg)](https://travis-ci.org/sbueringer/grafana-consul-datasource)[![Codecov](https://img.shields.io/codecov/c/github/sbueringer/grafana-consul-datasource.svg)](https://codecov.io/gh/sbueringer/grafana-consul-datasource)[![CodeFactor](https://www.codefactor.io/repository/github/sbueringer/grafana-consul-datasource/badge)](https://www.codefactor.io/repository/github/sbueringer/grafana-consul-datasource)[![GoReportCard](https://goreportcard.com/badge/github.com/sbueringer/grafana-consul-datasource?style=plastic)](https://goreportcard.com/report/github.com/sbueringer/grafana-consul-datasource)[![GitHub release](https://img.shields.io/github/release/sbueringer/grafana-consul-datasource.svg)](https://github.com/sbueringer/grafana-consul-datasource/releases)
 
-[![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/sbueringer/consul-datasource/issues) 
+[![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/sbueringer/grafana-consul-datasource/issues) 
 
 This datasource lets you integrate key value data from Consul in Grafana dashboards.
 

dist/partials/config.html

@@ -9,7 +9,7 @@ <h3 class="page-heading">Consul</h3>
     <div class="gf-form max-width-30">
         <span class="gf-form-label width-7">Token</span>
         <input type="text" class="gf-form-input" ng-model='ctrl.current.secureJsonData.consulToken'
-               placeholder="CONSUL_TOKEN" required>
+               placeholder="CONSUL_TOKEN">
     </div>
 </div>
 
@@ -27,7 +27,8 @@ <h5>Consul Address</h5>
         </p>
         <h5>Consul Token</h5>
         <p>
-            Consul Token has to be a valid Consul Token which is able to read the values you want to access.
+            If Consul Token is set, it has to be a valid Consul Token which is able to read the data you want to access.
+            If Consul Token is not set, "anonymous' is used (see <a href="https://www.consul.io/docs/acl/acl-system.html#acl-tokens">Consul documentation</a>). If ACLs are disabled in Consul, "anonymous" should be able to read the necessary data.
             More details can be found in the <a href="https://www.consul.io/docs/guides/acl.html">Consul
             documentation</a>.
         </p>

example/README.md

@@ -5,7 +5,7 @@
 
 ````
 git clone https://github.com/sbueringer/grafana-consul-datasource.git
-cd consul-datasource/example
+cd grafana-consul-datasource/example
 go run main.go
 ````
 

example/main.go

@@ -45,7 +45,7 @@ func startServer() *testutil.TestServer {
 		c.ACLDefaultPolicy = "allow"
 		c.ACLDatacenter = "default"
 		c.ACLMasterToken = "master"
-		c.LogLevel = "warn"
+		c.LogLevel = "debug"
 	})
 	if err != nil {
 		panic(err)

src/partials/config.html

@@ -9,7 +9,7 @@ <h3 class="page-heading">Consul</h3>
     <div class="gf-form max-width-30">
         <span class="gf-form-label width-7">Token</span>
         <input type="text" class="gf-form-input" ng-model='ctrl.current.secureJsonData.consulToken'
-               placeholder="CONSUL_TOKEN" required>
+               placeholder="CONSUL_TOKEN">
     </div>
 </div>
 
@@ -27,7 +27,8 @@ <h5>Consul Address</h5>
         </p>
         <h5>Consul Token</h5>
         <p>
-            Consul Token has to be a valid Consul Token which is able to read the values you want to access.
+            If Consul Token is set, it has to be a valid Consul Token which is able to read the data you want to access.
+            If Consul Token is not set, "anonymous' is used (see <a href="https://www.consul.io/docs/acl/acl-system.html#acl-tokens">Consul documentation</a>). If ACLs are disabled in Consul, "anonymous" should be able to read the necessary data.
             More details can be found in the <a href="https://www.consul.io/docs/guides/acl.html">Consul
             documentation</a>.
         </p>