Adding healthcheck for OOM testing

Add a heathcheck endpoint for OOM testing

Issue-ID: ONAPARC-363
Change-Id: Id5f77478d331fedb19ac162389d95852e10c5022
Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>

diff --git a/src/k8splugin/api/api.go b/src/k8splugin/api/api.go
index 741c063..5fed28a 100644 (file)
--- a/src/k8splugin/api/api.go
+++ b/src/k8splugin/api/api.go
@@ -101,5 +101,8 @@ func NewRouter(defClient rb.DefinitionManager,
        resRouter.HandleFunc("/definition/{rbname}/{rbversion}/profile/{prname}/config/rollback", configHandler.rollbackHandler).Methods("POST")
        resRouter.HandleFunc("/definition/{rbname}/{rbversion}/profile/{prname}/config/tagit", configHandler.tagitHandler).Methods("POST")
 
+       // Add healthcheck path
+       instRouter.HandleFunc("/healthcheck", healthCheckHandler).Methods("GET")
+
        return router
 }

diff --git a/src/k8splugin/api/healthcheckhandler.go b/src/k8splugin/api/healthcheckhandler.go
new file mode 100644 (file)
index 0000000..79b7b7e
--- /dev/null
+++ b/src/k8splugin/api/healthcheckhandler.go
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2018 Intel Corporation, Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package api
+
+import (
+       "net/http"
+
+       "k8splugin/internal/db"
+)
+
+// healthCheckHandler executes a db read to return health of k8splugin
+// and its backing database
+func healthCheckHandler(w http.ResponseWriter, r *http.Request) {
+       err := db.DBconn.HealthCheck()
+       if err != nil {
+               http.Error(w, err.Error(), http.StatusInternalServerError)
+               return
+       }
+
+       w.WriteHeader(http.StatusOK)
+}

diff --git a/src/k8splugin/api/healthcheckhandler_test.go b/src/k8splugin/api/healthcheckhandler_test.go
new file mode 100644 (file)
index 0000000..c2e1888
--- /dev/null
+++ b/src/k8splugin/api/healthcheckhandler_test.go
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2018 Intel Corporation, Inc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package api
+
+import (
+       "net/http"
+       "net/http/httptest"
+       "testing"
+
+       "k8splugin/internal/db"
+
+       pkgerrors "github.com/pkg/errors"
+)
+
+// healthCheckHandler executes a db read to return health of k8splugin
+// and its backing database
+func TestHealthCheckHandler(t *testing.T) {
+
+       t.Run("OK HealthCheck", func(t *testing.T) {
+               db.DBconn = &db.MockDB{
+                       Err: nil,
+               }
+               request := httptest.NewRequest("GET", "/v1/healthcheck", nil)
+               resp := executeRequest(request, NewRouter(nil, nil, nil, nil, nil))
+
+               //Check returned code
+               if resp.StatusCode != http.StatusOK {
+                       t.Fatalf("Expected %d; Got: %d", http.StatusOK, resp.StatusCode)
+               }
+       })
+
+       t.Run("FAILED HealthCheck", func(t *testing.T) {
+               db.DBconn = &db.MockDB{
+                       Err: pkgerrors.New("Runtime Error in DB"),
+               }
+               request := httptest.NewRequest("GET", "/v1/healthcheck", nil)
+               resp := executeRequest(request, NewRouter(nil, nil, nil, nil, nil))
+
+               //Check returned code
+               if resp.StatusCode != http.StatusInternalServerError {
+                       t.Fatalf("Expected %d; Got: %d", http.StatusInternalServerError, resp.StatusCode)
+               }
+       })
+}

diff --git a/src/k8splugin/internal/db/testing.go b/src/k8splugin/internal/db/testing.go
index 1fefd63..5f69dcb 100644 (file)
--- a/src/k8splugin/internal/db/testing.go
+++ b/src/k8splugin/internal/db/testing.go
@@ -35,6 +35,10 @@ type MockDB struct {
        Err   error
 }
 
+func (m *MockDB) HealthCheck() error {
+       return m.Err
+}
+
 func (m *MockDB) Create(table string, key Key, tag string, data interface{}) error {
        return m.Err
 }