allow global opsgenie api key (prometheus#1208)

* allow global opsgenie api key

* added missing files

* removed test

config/config.go

@@ -235,6 +235,12 @@ func (c *Config) UnmarshalYAML(unmarshal func(interface{}) error) error {
 			if !strings.HasSuffix(ogc.APIURL, "/") {
 				ogc.APIURL += "/"
 			}
+			if ogc.APIKey == "" {
+				if c.Global.OpsGenieAPIKey == "" {
+					return fmt.Errorf("no global OpsGenie API Key set")
+				}
+				ogc.APIKey = c.Global.OpsGenieAPIKey
+			}
 		}
 		for _, wcc := range rcv.WechatConfigs {
 			wcc.APIURL = c.Global.WeChatAPIURL
@@ -348,6 +354,7 @@ type GlobalConfig struct {
 	HipchatAPIURL    string `yaml:"hipchat_api_url,omitempty" json:"hipchat_api_url,omitempty"`
 	HipchatAuthToken Secret `yaml:"hipchat_auth_token,omitempty" json:"hipchat_auth_token,omitempty"`
 	OpsGenieAPIURL   string `yaml:"opsgenie_api_url,omitempty" json:"opsgenie_api_url,omitempty"`
+	OpsGenieAPIKey   Secret `yaml:"opsgenie_api_key,omitempty" json:"opsgenie_api_key,omitempty"`
 	WeChatAPIURL     string `yaml:"wechat_api_url,omitempty" json:"wechat_api_url,omitempty"`
 	WeChatAPISecret  string `yaml:"wechat_api_secret,omitempty" json:"wechat_api_secret,omitempty"`
 	WeChatAPICorpID  string `yaml:"wechat_api_corp_id,omitempty" json:"wechat_api_corp_id,omitempty"`

config/config_test.go

@@ -381,3 +381,28 @@ func TestVictorOpsNoAPIKey(t *testing.T) {
 		t.Errorf("Expected: %s\nGot: %s", "no global VictorOps API Key set", err.Error())
 	}
 }
+
+func TestOpsGenieDefaultAPIKey(t *testing.T) {
+	conf, _, err := LoadFile("testdata/conf.opsgenie-default-apikey.yml")
+	if err != nil {
+		t.Errorf("Error parsing %s: %s", "testdata/conf.opsgenie-default-apikey.yml", err)
+	}
+
+	var defaultKey = conf.Global.OpsGenieAPIKey
+	if defaultKey != conf.Receivers[0].OpsGenieConfigs[0].APIKey {
+		t.Errorf("Invalid OpsGenie key: %s\nExpected: %s", conf.Receivers[0].OpsGenieConfigs[0].APIKey, defaultKey)
+	}
+	if defaultKey == conf.Receivers[1].OpsGenieConfigs[0].APIKey {
+		t.Errorf("Invalid OpsGenie key: %s\nExpected: %s", conf.Receivers[0].OpsGenieConfigs[0].APIKey, "qwe456")
+	}
+}
+
+func TestOpsGenieNoAPIKey(t *testing.T) {
+	_, _, err := LoadFile("testdata/conf.opsgenie-no-apikey.yml")
+	if err == nil {
+		t.Errorf("Expected an error parsing %s: %s", "testdata/conf.opsgenie-no-apikey.yml", err)
+	}
+	if err.Error() != "no global OpsGenie API Key set" {
+		t.Errorf("Expected: %s\nGot: %s", "no global OpsGenie API Key set", err.Error())
+	}
+}

config/notifiers.go

@@ -382,9 +382,6 @@ func (c *OpsGenieConfig) UnmarshalYAML(unmarshal func(interface{}) error) error
 	if err := unmarshal((*plain)(c)); err != nil {
 		return err
 	}
-	if c.APIKey == "" {
-		return fmt.Errorf("missing API key in OpsGenie config")
-	}
 	return checkOverflow(c.XXX, "opsgenie config")
 }
 

config/notifiers_test.go

@@ -1,8 +1,9 @@
 package config
 
 import (
-	"gopkg.in/yaml.v2"
 	"testing"
+
+	"gopkg.in/yaml.v2"
 )
 
 func TestEmailToIsPresent(t *testing.T) {
@@ -143,23 +144,6 @@ corp_id: ''
 	}
 }
 
-func TestOpsGenieAPIKeyIsPresent(t *testing.T) {
-	in := `
-api_key: ''
-`
-	var cfg OpsGenieConfig
-	err := yaml.Unmarshal([]byte(in), &cfg)
-
-	expected := "missing API key in OpsGenie config"
-
-	if err == nil {
-		t.Fatalf("no error returned, expected:\n%v", expected)
-	}
-	if err.Error() != expected {
-		t.Errorf("\nexpected:\n%v\ngot:\n%v", expected, err.Error())
-	}
-}
-
 func TestVictorOpsRoutingKeyIsPresent(t *testing.T) {
 	in := `
 routing_key: ''

config/testdata/conf.opsgenie-default-apikey.yml

@@ -0,0 +1,22 @@
+global:
+  opsgenie_api_key: asd132
+
+route:
+  group_by: ['alertname', 'cluster', 'service']
+  group_wait: 30s
+  group_interval: 5m
+  repeat_interval: 3h
+  receiver: team-Y-opsgenie
+  routes:
+  - match:
+      service: foo
+    receiver: team-X-opsgenie
+
+receivers:
+- name: 'team-X-opsgenie'
+  opsgenie_configs:
+  - teams: 'team-X'
+- name: 'team-Y-opsgenie'
+  opsgenie_configs:
+  - teams: 'team-Y'
+    api_key: qwe456

config/testdata/conf.opsgenie-no-apikey.yml

@@ -0,0 +1,15 @@
+route:
+  group_by: ['alertname', 'cluster', 'service']
+  group_wait: 30s
+  group_interval: 5m
+  repeat_interval: 3h
+  receiver: team-X-opsgenie
+  routes:
+  - match:
+      service: foo
+    receiver: team-X-opsgenie
+
+receivers:
+- name: 'team-X-opsgenie'
+  opsgenie_configs:
+  - teams: 'team-X'