add short config doc

Signed-off-by: Augustin Husson <[email protected]>

README.md

@@ -72,10 +72,51 @@ There is a various way to collect the metric usage, here the complete list of th
 
 This collector gets the list of metrics for a defined period of time. This list is then stored in the system waiting to associate them with their usage find by the other collectors.
 
+#### Configuration
+
+```yaml
+metric_collector:
+  enable: true
+  prometheus_client:
+    url: "https://prometheus.demo.do.prometheus.io"
+```
+
 ### Prometheus Rule Collector
 
 This collector gets the Prometheus Rules Group using the HTTP API. Then it extracts the metric used in the alert rule or in the recording rule.
 
+#### Configuration
+
+```yaml
+rules_collector:
+  enable: true
+  prometheus_client:
+    url: "https://prometheus.demo.do.prometheus.io"
+```
+
 ### Perses Collector
 
 This collector gets the list of dashboards using the HTTP API of Perses. Then it extracts the metric used in the variables and in the different panels.
+
+#### Configuration
+
+```yaml
+perses_collector:
+  enable: true
+  http_client:
+    url: "https://demo.perses.dev"
+```
+
+### Grafana Collector
+
+This collector gets the list of dashboards using the HTTP API of Grafana. Then it extracts the metric used in the different panels. 
+Extraction from variable still needs to be done.
+
+#### Configuration
+
+```yaml
+grafana_collector:
+  enable: true
+  http_client:
+    url: "https//demo.grafana.dev"
+```

config/collector.go

@@ -53,7 +53,7 @@ func NewHTTPClient(cfg HTTPClient) (*http.Client, error) {
 type MetricCollector struct {
 	Enable           bool           `yaml:"enable"`
 	Period           model.Duration `yaml:"period,omitempty"`
-	PrometheusClient HTTPClient     `yaml:"prometheus_client"`
+	PrometheusClient HTTPClient     `yaml:"http_client"`
 }
 
 func (c *MetricCollector) Verify() error {
@@ -72,7 +72,7 @@ func (c *MetricCollector) Verify() error {
 type RulesCollector struct {
 	Enable           bool           `yaml:"enable"`
 	Period           model.Duration `yaml:"period,omitempty"`
-	PrometheusClient HTTPClient     `yaml:"prometheus_client"`
+	PrometheusClient HTTPClient     `yaml:"http_client"`
 }
 
 func (c *RulesCollector) Verify() error {

dev/config.yaml

@@ -1,11 +1,11 @@
 metric_collector:
   enable: true
-  prometheus_client:
+  http_client:
     url: "https://prometheus.demo.do.prometheus.io"
 
 rules_collector:
   enable: true
-  prometheus_client:
+  http_client:
     url: "https://prometheus.demo.do.prometheus.io"
 
 perses_collector: