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authorVictor Morales <victor.morales@intel.com>2019-01-24 17:46:43 -0800
committerVictor Morales <victor.morales@intel.com>2019-01-25 16:52:38 -0800
commit083465d10c8fdeaffa89aa7daa93def3eca77df1 (patch)
tree23135a724a1628e986f9c6748b82f275763cdf10 /src/k8splugin/internal/db
parent5c4e91705457dc4bdb5526e6f5210fa879ab659d (diff)
Use a standard Go project layout
This project wasn't following some Standard Go Project Layout guidelines(https://github.com/golang-standards/project-layout). This change pretends to organize the source code and following those guidelines. Change-Id: I61085ac20f28069cede013f83034bed06892d87c Signed-off-by: Victor Morales <victor.morales@intel.com> Issue-ID: MULTICLOUD-301
Diffstat (limited to 'src/k8splugin/internal/db')
-rw-r--r--src/k8splugin/internal/db/consul.go118
-rw-r--r--src/k8splugin/internal/db/consul_test.go313
-rw-r--r--src/k8splugin/internal/db/mongo.go334
-rw-r--r--src/k8splugin/internal/db/mongo_test.go530
-rw-r--r--src/k8splugin/internal/db/store.go83
-rw-r--r--src/k8splugin/internal/db/store_test.go123
-rw-r--r--src/k8splugin/internal/db/testing.go79
7 files changed, 1580 insertions, 0 deletions
diff --git a/src/k8splugin/internal/db/consul.go b/src/k8splugin/internal/db/consul.go
new file mode 100644
index 00000000..a61a4c10
--- /dev/null
+++ b/src/k8splugin/internal/db/consul.go
@@ -0,0 +1,118 @@
+/*
+Copyright 2018 Intel Corporation.
+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 db
+
+import (
+ "os"
+
+ "github.com/hashicorp/consul/api"
+ pkgerrors "github.com/pkg/errors"
+)
+
+// ConsulKVStore defines the a subset of Consul DB operations
+// Note: This interface is defined mainly for allowing mock testing
+type ConsulKVStore interface {
+ List(prefix string, q *api.QueryOptions) (api.KVPairs, *api.QueryMeta, error)
+ Get(key string, q *api.QueryOptions) (*api.KVPair, *api.QueryMeta, error)
+ Put(p *api.KVPair, q *api.WriteOptions) (*api.WriteMeta, error)
+ Delete(key string, w *api.WriteOptions) (*api.WriteMeta, error)
+}
+
+// ConsulStore is an implementation of the ConsulKVStore interface
+type ConsulStore struct {
+ client ConsulKVStore
+}
+
+// NewConsulStore initializes a Consul Store instance using the default values
+func NewConsulStore(store ConsulKVStore) (Store, error) {
+ if store == nil {
+ config := api.DefaultConfig()
+ config.Address = os.Getenv("DATABASE_IP") + ":8500"
+
+ consulClient, err := api.NewClient(config)
+ if err != nil {
+ return nil, err
+ }
+ store = consulClient.KV()
+ }
+
+ return &ConsulStore{
+ client: store,
+ }, nil
+}
+
+// HealthCheck verifies if the database is up and running
+func (c *ConsulStore) HealthCheck() error {
+ _, err := c.Read("test", "test", "test")
+ if err != nil {
+ return pkgerrors.New("[ERROR] Cannot talk to Datastore. Check if it is running/reachable.")
+ }
+ return nil
+}
+
+// Unmarshal implements any unmarshaling that is needed when using consul
+func (c *ConsulStore) Unmarshal(inp []byte, out interface{}) error {
+ return nil
+}
+
+// Create is used to create a DB entry
+func (c *ConsulStore) Create(root, key, tag string, data interface{}) error {
+
+ value, err := Serialize(data)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Serializing input data")
+ }
+
+ p := &api.KVPair{
+ Key: key,
+ Value: []byte(value),
+ }
+ _, err = c.client.Put(p, nil)
+ return err
+}
+
+// Read method returns the internalID for a particular externalID
+func (c *ConsulStore) Read(root, key, tag string) ([]byte, error) {
+ key = root + "/" + key + "/" + tag
+ pair, _, err := c.client.Get(key, nil)
+ if err != nil {
+ return nil, err
+ }
+ if pair == nil {
+ return nil, nil
+ }
+ return pair.Value, nil
+}
+
+// Delete method removes an internalID from the Database
+func (c *ConsulStore) Delete(root, key, tag string) error {
+ _, err := c.client.Delete(key, nil)
+ return err
+}
+
+// ReadAll is used to get all ExternalIDs in a namespace
+func (c *ConsulStore) ReadAll(root, tag string) (map[string][]byte, error) {
+ pairs, _, err := c.client.List(root, nil)
+ if err != nil {
+ return nil, err
+ }
+
+ //TODO: Filter results by tag and return it
+ result := make(map[string][]byte)
+ for _, keypair := range pairs {
+ result[keypair.Key] = keypair.Value
+ }
+
+ return result, nil
+}
diff --git a/src/k8splugin/internal/db/consul_test.go b/src/k8splugin/internal/db/consul_test.go
new file mode 100644
index 00000000..754112ad
--- /dev/null
+++ b/src/k8splugin/internal/db/consul_test.go
@@ -0,0 +1,313 @@
+// +build unit
+
+/*
+Copyright 2018 Intel Corporation.
+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 db
+
+import (
+ "reflect"
+ "strings"
+ "testing"
+
+ "github.com/hashicorp/consul/api"
+ pkgerrors "github.com/pkg/errors"
+)
+
+type mockConsulKVStore struct {
+ Items api.KVPairs
+ Err error
+}
+
+func (c *mockConsulKVStore) Put(p *api.KVPair, q *api.WriteOptions) (*api.WriteMeta, error) {
+ return nil, c.Err
+}
+
+func (c *mockConsulKVStore) Get(key string, q *api.QueryOptions) (*api.KVPair, *api.QueryMeta, error) {
+ if c.Err != nil {
+ return nil, nil, c.Err
+ }
+ for _, kvpair := range c.Items {
+ if kvpair.Key == key {
+ return kvpair, nil, nil
+ }
+ }
+ return nil, nil, nil
+}
+
+func (c *mockConsulKVStore) Delete(key string, w *api.WriteOptions) (*api.WriteMeta, error) {
+ return nil, c.Err
+}
+
+func (c *mockConsulKVStore) List(prefix string, q *api.QueryOptions) (api.KVPairs, *api.QueryMeta, error) {
+ if c.Err != nil {
+ return nil, nil, c.Err
+ }
+ return c.Items, nil, nil
+}
+
+func TestConsulHealthCheck(t *testing.T) {
+ testCases := []struct {
+ label string
+ mock *mockConsulKVStore
+ expectedError string
+ }{
+ {
+ label: "Sucessful health check Consul Database",
+ mock: &mockConsulKVStore{
+ Items: api.KVPairs{
+ &api.KVPair{
+ Key: "test-key",
+ Value: nil,
+ },
+ },
+ },
+ },
+ {
+ label: "Fail connectivity to Consul Database",
+ mock: &mockConsulKVStore{
+ Err: pkgerrors.New("Timeout"),
+ },
+ expectedError: "Cannot talk to Datastore. Check if it is running/reachable.",
+ },
+ }
+
+ for _, testCase := range testCases {
+ t.Run(testCase.label, func(t *testing.T) {
+ client, _ := NewConsulStore(testCase.mock)
+ err := client.HealthCheck()
+ if err != nil {
+ if testCase.expectedError == "" {
+ t.Fatalf("HealthCheck method return an un-expected (%s)", err)
+ }
+ if !strings.Contains(string(err.Error()), testCase.expectedError) {
+ t.Fatalf("HealthCheck method returned an error (%s)", err)
+ }
+ }
+ })
+ }
+}
+
+func TestConsulCreate(t *testing.T) {
+ testCases := []struct {
+ label string
+ input map[string]string
+ mock *mockConsulKVStore
+ expectedError string
+ }{
+ {
+ label: "Sucessful register a record to Consul Database",
+ input: map[string]string{"root": "rbinst", "key": "test-key",
+ "tag": "data", "value": "test-value"},
+ mock: &mockConsulKVStore{},
+ },
+ {
+ label: "Fail to create a new record in Consul Database",
+ input: map[string]string{"root": "rbinst", "key": "test-key",
+ "tag": "data", "value": "test-value"},
+ mock: &mockConsulKVStore{
+ Err: pkgerrors.New("DB error"),
+ },
+ expectedError: "DB error",
+ },
+ }
+
+ for _, testCase := range testCases {
+ t.Run(testCase.label, func(t *testing.T) {
+ client, _ := NewConsulStore(testCase.mock)
+ err := client.Create(testCase.input["root"], testCase.input["key"],
+ testCase.input["tag"], testCase.input["value"])
+ if err != nil {
+ if testCase.expectedError == "" {
+ t.Fatalf("Create method return an un-expected (%s)", err)
+ }
+ if !strings.Contains(string(err.Error()), testCase.expectedError) {
+ t.Fatalf("Create method returned an error (%s)", err)
+ }
+ }
+ })
+ }
+}
+
+func TestConsulRead(t *testing.T) {
+ testCases := []struct {
+ label string
+ input map[string]string
+ mock *mockConsulKVStore
+ expectedError string
+ expectedResult string
+ }{
+ {
+ label: "Sucessful retrieve a record from Consul Database",
+ input: map[string]string{"root": "rbinst", "key": "test",
+ "tag": "data"},
+ mock: &mockConsulKVStore{
+ Items: api.KVPairs{
+ &api.KVPair{
+ Key: "rbinst/test/data",
+ Value: []byte("test-value"),
+ },
+ },
+ },
+ expectedResult: "test-value",
+ },
+ {
+ label: "Fail retrieve a non-existing record from Consul Database",
+ input: map[string]string{"root": "rbinst", "key": "test-key",
+ "tag": "data"},
+ mock: &mockConsulKVStore{},
+ },
+ {
+ label: "Fail retrieve a record from Consul Database",
+ input: map[string]string{"root": "rbinst", "key": "test-key",
+ "tag": "data"},
+ mock: &mockConsulKVStore{
+ Err: pkgerrors.New("DB error"),
+ },
+ expectedError: "DB error",
+ },
+ }
+
+ for _, testCase := range testCases {
+ t.Run(testCase.label, func(t *testing.T) {
+ client, _ := NewConsulStore(testCase.mock)
+ result, err := client.Read(testCase.input["root"], testCase.input["key"],
+ testCase.input["tag"])
+ if err != nil {
+ if testCase.expectedError == "" {
+ t.Fatalf("Read method return an un-expected (%s)", err)
+ }
+ if !strings.Contains(string(err.Error()), testCase.expectedError) {
+ t.Fatalf("Read method returned an error (%s)", err)
+ }
+ } else {
+ if testCase.expectedError != "" && testCase.expectedResult == "" {
+ t.Fatalf("Read method was expecting \"%s\" error message", testCase.expectedError)
+ }
+ if !reflect.DeepEqual(testCase.expectedResult, string(result)) {
+
+ t.Fatalf("Read method returned: \n%v\n and it was expected: \n%v", result, testCase.expectedResult)
+ }
+ }
+ })
+ }
+}
+
+func TestConsulDelete(t *testing.T) {
+ testCases := []struct {
+ label string
+ input map[string]string
+ mock *mockConsulKVStore
+ expectedError string
+ }{
+ {
+ label: "Sucessful delete a record to Consul Database",
+ input: map[string]string{"root": "rbinst", "key": "test-key",
+ "tag": "data"},
+ mock: &mockConsulKVStore{},
+ },
+ {
+ label: "Fail to delete a record in Consul Database",
+ mock: &mockConsulKVStore{
+ Err: pkgerrors.New("DB error"),
+ },
+ expectedError: "DB error",
+ },
+ }
+
+ for _, testCase := range testCases {
+ t.Run(testCase.label, func(t *testing.T) {
+ client, _ := NewConsulStore(testCase.mock)
+ err := client.Delete(testCase.input["root"], testCase.input["key"],
+ testCase.input["tag"])
+ if err != nil {
+ if testCase.expectedError == "" {
+ t.Fatalf("Delete method return an un-expected (%s)", err)
+ }
+ if !strings.Contains(string(err.Error()), testCase.expectedError) {
+ t.Fatalf("Delete method returned an error (%s)", err)
+ }
+ }
+ })
+ }
+}
+
+func TestConsulReadAll(t *testing.T) {
+ testCases := []struct {
+ label string
+ input map[string]string
+ mock *mockConsulKVStore
+ expectedError string
+ expectedResult map[string][]byte
+ }{
+ {
+ label: "Sucessful retrieve a list from Consul Database",
+ input: map[string]string{"root": "rbinst", "key": "test-key",
+ "tag": "data"},
+ mock: &mockConsulKVStore{
+ Items: api.KVPairs{
+ &api.KVPair{
+ Key: "test",
+ Value: []byte("test-value"),
+ },
+ &api.KVPair{
+ Key: "test2",
+ Value: []byte("test-value2"),
+ },
+ },
+ },
+ expectedResult: map[string][]byte{"test": []byte("test-value"),
+ "test2": []byte("test-value2")},
+ },
+ {
+ label: "Sucessful retrieve an empty list from Consul Database",
+ input: map[string]string{"root": "rbinst", "key": "test-key",
+ "tag": "data"},
+ mock: &mockConsulKVStore{},
+ expectedResult: map[string][]byte{},
+ },
+ {
+ label: "Fail retrieve a record from Consul Database",
+ input: map[string]string{"root": "rbinst", "key": "test-key",
+ "tag": "data"},
+ mock: &mockConsulKVStore{
+ Err: pkgerrors.New("DB error"),
+ },
+ expectedError: "DB error",
+ },
+ }
+
+ for _, testCase := range testCases {
+ t.Run(testCase.label, func(t *testing.T) {
+ client, _ := NewConsulStore(testCase.mock)
+ result, err := client.ReadAll(testCase.input["root"],
+ testCase.input["tag"])
+ if err != nil {
+ if testCase.expectedError == "" {
+ t.Fatalf("ReadAll method return an un-expected (%s)", err)
+ }
+ if !strings.Contains(string(err.Error()), testCase.expectedError) {
+ t.Fatalf("ReadAll method returned an error (%s)", err)
+ }
+ } else {
+ if testCase.expectedError != "" && testCase.expectedResult == nil {
+ t.Fatalf("ReadAll method was expecting \"%s\" error message", testCase.expectedError)
+ }
+ if !reflect.DeepEqual(testCase.expectedResult, result) {
+
+ t.Fatalf("ReadAll method returned: \n%v\n and it was expected: \n%v", result, testCase.expectedResult)
+ }
+ }
+ })
+ }
+}
diff --git a/src/k8splugin/internal/db/mongo.go b/src/k8splugin/internal/db/mongo.go
new file mode 100644
index 00000000..05976b12
--- /dev/null
+++ b/src/k8splugin/internal/db/mongo.go
@@ -0,0 +1,334 @@
+/*
+ * 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 db
+
+import (
+ "github.com/mongodb/mongo-go-driver/bson"
+ "github.com/mongodb/mongo-go-driver/bson/primitive"
+ "github.com/mongodb/mongo-go-driver/mongo"
+ "github.com/mongodb/mongo-go-driver/mongo/options"
+ pkgerrors "github.com/pkg/errors"
+ "golang.org/x/net/context"
+ "log"
+ "os"
+)
+
+// MongoCollection defines the a subset of MongoDB operations
+// Note: This interface is defined mainly for mock testing
+type MongoCollection interface {
+ InsertOne(ctx context.Context, document interface{},
+ opts ...*options.InsertOneOptions) (*mongo.InsertOneResult, error)
+ FindOne(ctx context.Context, filter interface{},
+ opts ...*options.FindOneOptions) *mongo.SingleResult
+ FindOneAndUpdate(ctx context.Context, filter interface{},
+ update interface{}, opts ...*options.FindOneAndUpdateOptions) *mongo.SingleResult
+ DeleteOne(ctx context.Context, filter interface{},
+ opts ...*options.DeleteOptions) (*mongo.DeleteResult, error)
+ Find(ctx context.Context, filter interface{},
+ opts ...*options.FindOptions) (mongo.Cursor, error)
+}
+
+// MongoStore is an implementation of the db.Store interface
+type MongoStore struct {
+ db *mongo.Database
+}
+
+// This exists only for allowing us to mock the collection object
+// for testing purposes
+var getCollection = func(coll string, m *MongoStore) MongoCollection {
+ return m.db.Collection(coll)
+}
+
+// This exists only for allowing us to mock the DecodeBytes function
+// Mainly because we cannot construct a SingleResult struct from our
+// tests. All fields in that struct are private.
+var decodeBytes = func(sr *mongo.SingleResult) (bson.Raw, error) {
+ return sr.DecodeBytes()
+}
+
+// NewMongoStore initializes a Mongo Database with the name provided
+// If a database with that name exists, it will be returned
+func NewMongoStore(name string, store *mongo.Database) (Store, error) {
+ if store == nil {
+ ip := "mongodb://" + os.Getenv("DATABASE_IP") + ":27017"
+ mongoClient, err := mongo.NewClient(ip)
+ if err != nil {
+ return nil, err
+ }
+
+ err = mongoClient.Connect(context.Background())
+ if err != nil {
+ return nil, err
+ }
+ store = mongoClient.Database(name)
+ }
+
+ return &MongoStore{
+ db: store,
+ }, nil
+}
+
+// HealthCheck verifies if the database is up and running
+func (m *MongoStore) HealthCheck() error {
+
+ _, err := decodeBytes(m.db.RunCommand(context.Background(), bson.D{{"serverStatus", 1}}))
+ if err != nil {
+ return pkgerrors.Wrap(err, "Error getting server status")
+ }
+
+ return nil
+}
+
+// validateParams checks to see if any parameters are empty
+func (m *MongoStore) validateParams(args ...string) bool {
+ for _, v := range args {
+ if v == "" {
+ return false
+ }
+ }
+
+ return true
+}
+
+// Create is used to create a DB entry
+func (m *MongoStore) Create(coll, key, tag string, data interface{}) error {
+ if data == nil || !m.validateParams(coll, key, tag) {
+ return pkgerrors.New("No Data to store")
+ }
+
+ c := getCollection(coll, m)
+ ctx := context.Background()
+
+ //Insert the data and then add the objectID to the masterTable
+ res, err := c.InsertOne(ctx, bson.D{
+ {tag, data},
+ })
+ if err != nil {
+ return pkgerrors.Errorf("Error inserting into database: %s", err.Error())
+ }
+
+ //Add objectID of created data to masterKey document
+ //Create masterkey document if it does not exist
+ filter := bson.D{{"key", key}}
+
+ _, err = decodeBytes(
+ c.FindOneAndUpdate(
+ ctx,
+ filter,
+ bson.D{
+ {"$set", bson.D{
+ {tag, res.InsertedID},
+ }},
+ },
+ options.FindOneAndUpdate().SetUpsert(true).SetReturnDocument(options.After)))
+
+ if err != nil {
+ return pkgerrors.Errorf("Error updating master table: %s", err.Error())
+ }
+
+ return nil
+}
+
+// Unmarshal implements an unmarshaler for bson data that
+// is produced from the mongo database
+func (m *MongoStore) Unmarshal(inp []byte, out interface{}) error {
+ err := bson.Unmarshal(inp, out)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Unmarshaling bson")
+ }
+ return nil
+}
+
+// Read method returns the data stored for this key and for this particular tag
+func (m *MongoStore) Read(coll, key, tag string) ([]byte, error) {
+ if !m.validateParams(coll, key, tag) {
+ return nil, pkgerrors.New("Mandatory fields are missing")
+ }
+
+ c := getCollection(coll, m)
+ ctx := context.Background()
+
+ //Get the masterkey document based on given key
+ filter := bson.D{{"key", key}}
+ keydata, err := decodeBytes(c.FindOne(context.Background(), filter))
+ if err != nil {
+ return nil, pkgerrors.Errorf("Error finding master table: %s", err.Error())
+ }
+
+ //Read the tag objectID from document
+ tagoid, ok := keydata.Lookup(tag).ObjectIDOK()
+ if !ok {
+ return nil, pkgerrors.Errorf("Error finding objectID for tag %s", tag)
+ }
+
+ //Use tag objectID to read the data from store
+ filter = bson.D{{"_id", tagoid}}
+ tagdata, err := decodeBytes(c.FindOne(ctx, filter))
+ if err != nil {
+ return nil, pkgerrors.Errorf("Error reading found object: %s", err.Error())
+ }
+
+ //Return the data as a byte array
+ //Convert string data to byte array using the built-in functions
+ switch tagdata.Lookup(tag).Type {
+ case bson.TypeString:
+ return []byte(tagdata.Lookup(tag).StringValue()), nil
+ default:
+ return tagdata.Lookup(tag).Value, nil
+ }
+}
+
+// Helper function that deletes an object by its ID
+func (m *MongoStore) deleteObjectByID(coll string, objID primitive.ObjectID) error {
+
+ c := getCollection(coll, m)
+ ctx := context.Background()
+
+ _, err := c.DeleteOne(ctx, bson.D{{"_id", objID}})
+ if err != nil {
+ return pkgerrors.Errorf("Error Deleting from database: %s", err.Error())
+ }
+
+ log.Printf("Deleted Obj with ID %s", objID.String())
+ return nil
+}
+
+// Delete method removes a document from the Database that matches key
+// TODO: delete all referenced docs if tag is empty string
+func (m *MongoStore) Delete(coll, key, tag string) error {
+ if !m.validateParams(coll, key, tag) {
+ return pkgerrors.New("Mandatory fields are missing")
+ }
+
+ c := getCollection(coll, m)
+ ctx := context.Background()
+
+ //Get the masterkey document based on given key
+ filter := bson.D{{"key", key}}
+ //Remove the tag ID entry from masterkey table
+ update := bson.D{
+ {
+ "$unset", bson.D{
+ {tag, ""},
+ },
+ },
+ }
+ keydata, err := decodeBytes(c.FindOneAndUpdate(ctx, filter, update,
+ options.FindOneAndUpdate().SetReturnDocument(options.Before)))
+ if err != nil {
+ //No document was found. Return nil.
+ if err == mongo.ErrNoDocuments {
+ return nil
+ }
+ //Return any other error that was found.
+ return pkgerrors.Errorf("Error decoding master table after update: %s",
+ err.Error())
+ }
+
+ //Read the tag objectID from document
+ elems, err := keydata.Elements()
+ if err != nil {
+ return pkgerrors.Errorf("Error reading elements from database: %s", err.Error())
+ }
+
+ tagoid, ok := keydata.Lookup(tag).ObjectIDOK()
+ if !ok {
+ return pkgerrors.Errorf("Error finding objectID for tag %s", tag)
+ }
+
+ //Use tag objectID to read the data from store
+ err = m.deleteObjectByID(coll, tagoid)
+ if err != nil {
+ return pkgerrors.Errorf("Error deleting from database: %s", err.Error())
+ }
+
+ //Delete master table if no more tags left
+ //_id, key and tag should be elements in before doc
+ //if master table needs to be removed too
+ if len(elems) == 3 {
+ keyid, ok := keydata.Lookup("_id").ObjectIDOK()
+ if !ok {
+ return pkgerrors.Errorf("Error finding objectID for key %s", key)
+ }
+ err = m.deleteObjectByID(coll, keyid)
+ if err != nil {
+ return pkgerrors.Errorf("Error deleting master table from database: %s", err.Error())
+ }
+ }
+
+ return nil
+}
+
+// ReadAll is used to get all documents in db of a particular tag
+func (m *MongoStore) ReadAll(coll, tag string) (map[string][]byte, error) {
+ if !m.validateParams(coll, tag) {
+ return nil, pkgerrors.New("Missing collection or tag name")
+ }
+
+ c := getCollection(coll, m)
+ ctx := context.Background()
+
+ //Get all master tables in this collection
+ filter := bson.D{
+ {"key", bson.D{
+ {"$exists", true},
+ }},
+ }
+ cursor, err := c.Find(ctx, filter)
+ if err != nil {
+ return nil, pkgerrors.Errorf("Error reading from database: %s", err.Error())
+ }
+ defer cursor.Close(ctx)
+
+ //Iterate over all the master tables
+ result := make(map[string][]byte)
+ for cursor.Next(ctx) {
+ d, err := cursor.DecodeBytes()
+ if err != nil {
+ log.Printf("Unable to decode data in Readall: %s", err.Error())
+ continue
+ }
+
+ //Read key of each master table
+ key, ok := d.Lookup("key").StringValueOK()
+ if !ok {
+ log.Printf("Unable to read key string from mastertable %s", err.Error())
+ continue
+ }
+
+ //Get objectID of tag document
+ tid, ok := d.Lookup(tag).ObjectIDOK()
+ if !ok {
+ log.Printf("Did not find tag: %s", tag)
+ continue
+ }
+
+ //Find tag document and unmarshal it into []byte
+ tagData, err := decodeBytes(c.FindOne(ctx, bson.D{{"_id", tid}}))
+ if err != nil {
+ log.Printf("Unable to decode tag data %s", err.Error())
+ continue
+ }
+ result[key] = tagData.Lookup(tag).Value
+ }
+
+ if len(result) == 0 {
+ return result, pkgerrors.Errorf("Did not find any objects with tag: %s", tag)
+ }
+
+ return result, nil
+}
diff --git a/src/k8splugin/internal/db/mongo_test.go b/src/k8splugin/internal/db/mongo_test.go
new file mode 100644
index 00000000..1663e774
--- /dev/null
+++ b/src/k8splugin/internal/db/mongo_test.go
@@ -0,0 +1,530 @@
+// +build unit
+
+/*
+ * 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 db
+
+import (
+ "bytes"
+ "context"
+ "github.com/mongodb/mongo-go-driver/bson"
+ "github.com/mongodb/mongo-go-driver/mongo"
+ "github.com/mongodb/mongo-go-driver/mongo/options"
+ pkgerrors "github.com/pkg/errors"
+ "reflect"
+ "strings"
+ "testing"
+)
+
+// Implements the mongo.Cursor interface
+type mockCursor struct {
+ mongo.Cursor
+ err error
+ bson bson.Raw
+ count int
+}
+
+func (mc *mockCursor) Next(ctx context.Context) bool {
+ if mc.count > 0 {
+ mc.count = mc.count - 1
+ return true
+ }
+ return false
+}
+
+func (mc *mockCursor) DecodeBytes() (bson.Raw, error) {
+ return mc.bson, mc.err
+}
+
+func (mc *mockCursor) Close(ctx context.Context) error {
+ return nil
+}
+
+//Implements the functions used currently in mongo.go
+type mockCollection struct {
+ Err error
+ mCursor mongo.Cursor
+}
+
+func (c *mockCollection) InsertOne(ctx context.Context, document interface{},
+ opts ...*options.InsertOneOptions) (*mongo.InsertOneResult, error) {
+
+ if c.Err != nil {
+ return nil, c.Err
+ }
+
+ return &mongo.InsertOneResult{InsertedID: "_id1234"}, nil
+}
+
+func (c *mockCollection) FindOne(ctx context.Context, filter interface{},
+ opts ...*options.FindOneOptions) *mongo.SingleResult {
+
+ return &mongo.SingleResult{}
+}
+
+func (c *mockCollection) FindOneAndUpdate(ctx context.Context, filter interface{},
+ update interface{}, opts ...*options.FindOneAndUpdateOptions) *mongo.SingleResult {
+
+ return &mongo.SingleResult{}
+}
+
+func (c *mockCollection) DeleteOne(ctx context.Context, filter interface{},
+ opts ...*options.DeleteOptions) (*mongo.DeleteResult, error) {
+
+ return nil, c.Err
+}
+
+func (c *mockCollection) Find(ctx context.Context, filter interface{},
+ opts ...*options.FindOptions) (mongo.Cursor, error) {
+
+ return c.mCursor, c.Err
+}
+
+func TestCreate(t *testing.T) {
+ testCases := []struct {
+ label string
+ input map[string]interface{}
+ mockColl *mockCollection
+ bson bson.Raw
+ expectedError string
+ }{
+ {
+ label: "Successfull creation of entry",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "key": "keyvalue",
+ "tag": "tagName",
+ "data": "Data In String Format",
+ },
+ bson: bson.Raw{'\x08', '\x00', '\x00', '\x00', '\x0A', 'x', '\x00', '\x00'},
+ mockColl: &mockCollection{},
+ },
+ {
+ label: "UnSuccessfull creation of entry",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "key": "keyvalue",
+ "tag": "tagName",
+ "data": "Data In String Format",
+ },
+ mockColl: &mockCollection{
+ Err: pkgerrors.New("DB Error"),
+ },
+ expectedError: "DB Error",
+ },
+ {
+ label: "Missing input fields",
+ input: map[string]interface{}{
+ "coll": "",
+ "key": "",
+ "tag": "",
+ "data": "",
+ },
+ expectedError: "No Data to store",
+ mockColl: &mockCollection{},
+ },
+ }
+
+ for _, testCase := range testCases {
+ t.Run(testCase.label, func(t *testing.T) {
+ m, _ := NewMongoStore("name", &mongo.Database{})
+ // Override the getCollection function with our mocked version
+ getCollection = func(coll string, m *MongoStore) MongoCollection {
+ return testCase.mockColl
+ }
+
+ decodeBytes = func(sr *mongo.SingleResult) (bson.Raw, error) {
+ return testCase.bson, testCase.mockColl.Err
+ }
+
+ err := m.Create(testCase.input["coll"].(string), testCase.input["key"].(string),
+ testCase.input["tag"].(string), testCase.input["data"])
+ if err != nil {
+ if testCase.expectedError == "" {
+ t.Fatalf("Create method returned an un-expected (%s)", err)
+ }
+ if !strings.Contains(string(err.Error()), testCase.expectedError) {
+ t.Fatalf("Create method returned an error (%s)", err)
+ }
+ }
+ })
+ }
+}
+
+func TestRead(t *testing.T) {
+ testCases := []struct {
+ label string
+ input map[string]interface{}
+ mockColl *mockCollection
+ bson bson.Raw
+ expectedError string
+ expected []byte
+ }{
+ {
+ label: "Successfull Read of entry",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "key": "keyvalue",
+ "tag": "metadata",
+ },
+ // Binary form of
+ // {
+ // "_id" : ObjectId("5c115156777ff85654248ae1"),
+ // "key" : "b82c4bb1-09ff-6093-4d58-8327b94e1e20",
+ // "metadata" : ObjectId("5c115156c9755047e318bbfd")
+ // }
+ bson: bson.Raw{
+ '\x5a', '\x00', '\x00', '\x00', '\x07', '\x5f', '\x69', '\x64',
+ '\x00', '\x5c', '\x11', '\x51', '\x56', '\x77', '\x7f', '\xf8',
+ '\x56', '\x54', '\x24', '\x8a', '\xe1', '\x02', '\x6b', '\x65',
+ '\x79', '\x00', '\x25', '\x00', '\x00', '\x00', '\x62', '\x38',
+ '\x32', '\x63', '\x34', '\x62', '\x62', '\x31', '\x2d', '\x30',
+ '\x39', '\x66', '\x66', '\x2d', '\x36', '\x30', '\x39', '\x33',
+ '\x2d', '\x34', '\x64', '\x35', '\x38', '\x2d', '\x38', '\x33',
+ '\x32', '\x37', '\x62', '\x39', '\x34', '\x65', '\x31', '\x65',
+ '\x32', '\x30', '\x00', '\x07', '\x6d', '\x65', '\x74', '\x61',
+ '\x64', '\x61', '\x74', '\x61', '\x00', '\x5c', '\x11', '\x51',
+ '\x56', '\xc9', '\x75', '\x50', '\x47', '\xe3', '\x18', '\xbb',
+ '\xfd', '\x00',
+ },
+ mockColl: &mockCollection{},
+ // This is not the document because we are mocking decodeBytes
+ expected: []byte{92, 17, 81, 86, 201, 117, 80, 71, 227, 24, 187, 253},
+ },
+ {
+ label: "UnSuccessfull Read of entry: object not found",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "key": "keyvalue",
+ "tag": "badtag",
+ },
+ // Binary form of
+ // {
+ // "_id" : ObjectId("5c115156777ff85654248ae1"),
+ // "key" : "b82c4bb1-09ff-6093-4d58-8327b94e1e20",
+ // "metadata" : ObjectId("5c115156c9755047e318bbfd")
+ // }
+ bson: bson.Raw{
+ '\x5a', '\x00', '\x00', '\x00', '\x07', '\x5f', '\x69', '\x64',
+ '\x00', '\x5c', '\x11', '\x51', '\x56', '\x77', '\x7f', '\xf8',
+ '\x56', '\x54', '\x24', '\x8a', '\xe1', '\x02', '\x6b', '\x65',
+ '\x79', '\x00', '\x25', '\x00', '\x00', '\x00', '\x62', '\x38',
+ '\x32', '\x63', '\x34', '\x62', '\x62', '\x31', '\x2d', '\x30',
+ '\x39', '\x66', '\x66', '\x2d', '\x36', '\x30', '\x39', '\x33',
+ '\x2d', '\x34', '\x64', '\x35', '\x38', '\x2d', '\x38', '\x33',
+ '\x32', '\x37', '\x62', '\x39', '\x34', '\x65', '\x31', '\x65',
+ '\x32', '\x30', '\x00', '\x07', '\x6d', '\x65', '\x74', '\x61',
+ '\x64', '\x61', '\x74', '\x61', '\x00', '\x5c', '\x11', '\x51',
+ '\x56', '\xc9', '\x75', '\x50', '\x47', '\xe3', '\x18', '\xbb',
+ '\xfd', '\x00',
+ },
+ mockColl: &mockCollection{},
+ expectedError: "Error finding objectID",
+ },
+ {
+ label: "UnSuccessfull Read of entry",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "key": "keyvalue",
+ "tag": "tagName",
+ },
+ mockColl: &mockCollection{
+ Err: pkgerrors.New("DB Error"),
+ },
+ expectedError: "DB Error",
+ },
+ {
+ label: "Missing input fields",
+ input: map[string]interface{}{
+ "coll": "",
+ "key": "",
+ "tag": "",
+ },
+ expectedError: "Mandatory fields are missing",
+ mockColl: &mockCollection{},
+ },
+ }
+
+ for _, testCase := range testCases {
+ t.Run(testCase.label, func(t *testing.T) {
+ m, _ := NewMongoStore("name", &mongo.Database{})
+ // Override the getCollection function with our mocked version
+ getCollection = func(coll string, m *MongoStore) MongoCollection {
+ return testCase.mockColl
+ }
+
+ decodeBytes = func(sr *mongo.SingleResult) (bson.Raw, error) {
+ return testCase.bson, testCase.mockColl.Err
+ }
+ got, err := m.Read(testCase.input["coll"].(string), testCase.input["key"].(string),
+ testCase.input["tag"].(string))
+ if err != nil {
+ if testCase.expectedError == "" {
+ t.Fatalf("Read method returned an un-expected (%s)", err)
+ }
+ if !strings.Contains(string(err.Error()), testCase.expectedError) {
+ t.Fatalf("Read method returned an error (%s)", err)
+ }
+ } else {
+ if bytes.Compare(got, testCase.expected) != 0 {
+ t.Fatalf("Read returned unexpected data: %s, expected: %s",
+ string(got), testCase.expected)
+ }
+ }
+ })
+ }
+}
+
+func TestDelete(t *testing.T) {
+ testCases := []struct {
+ label string
+ input map[string]interface{}
+ mockColl *mockCollection
+ bson bson.Raw
+ expectedError string
+ }{
+ {
+ label: "Successfull Delete of entry",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "key": "keyvalue",
+ "tag": "metadata",
+ },
+ // Binary form of
+ // {
+ // "_id" : ObjectId("5c115156777ff85654248ae1"),
+ // "key" : "b82c4bb1-09ff-6093-4d58-8327b94e1e20",
+ // "metadata" : ObjectId("5c115156c9755047e318bbfd")
+ // }
+ bson: bson.Raw{
+ '\x5a', '\x00', '\x00', '\x00', '\x07', '\x5f', '\x69', '\x64',
+ '\x00', '\x5c', '\x11', '\x51', '\x56', '\x77', '\x7f', '\xf8',
+ '\x56', '\x54', '\x24', '\x8a', '\xe1', '\x02', '\x6b', '\x65',
+ '\x79', '\x00', '\x25', '\x00', '\x00', '\x00', '\x62', '\x38',
+ '\x32', '\x63', '\x34', '\x62', '\x62', '\x31', '\x2d', '\x30',
+ '\x39', '\x66', '\x66', '\x2d', '\x36', '\x30', '\x39', '\x33',
+ '\x2d', '\x34', '\x64', '\x35', '\x38', '\x2d', '\x38', '\x33',
+ '\x32', '\x37', '\x62', '\x39', '\x34', '\x65', '\x31', '\x65',
+ '\x32', '\x30', '\x00', '\x07', '\x6d', '\x65', '\x74', '\x61',
+ '\x64', '\x61', '\x74', '\x61', '\x00', '\x5c', '\x11', '\x51',
+ '\x56', '\xc9', '\x75', '\x50', '\x47', '\xe3', '\x18', '\xbb',
+ '\xfd', '\x00',
+ },
+ mockColl: &mockCollection{},
+ },
+ {
+ label: "UnSuccessfull Delete of entry",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "key": "keyvalue",
+ "tag": "tagName",
+ },
+ mockColl: &mockCollection{
+ Err: pkgerrors.New("DB Error"),
+ },
+ expectedError: "DB Error",
+ },
+ {
+ label: "UnSuccessfull Delete, key not found",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "key": "keyvalue",
+ "tag": "tagName",
+ },
+ bson: bson.Raw{
+ '\x5a', '\x00', '\x00', '\x00', '\x07', '\x5f', '\x69', '\x64',
+ '\x00', '\x5c', '\x11', '\x51', '\x56', '\x77', '\x7f', '\xf8',
+ '\x56', '\x54', '\x24', '\x8a', '\xe1', '\x02', '\x6b', '\x65',
+ '\x79', '\x00', '\x25', '\x00', '\x00', '\x00', '\x62', '\x38',
+ '\x32', '\x63', '\x34', '\x62', '\x62', '\x31', '\x2d', '\x30',
+ '\x39', '\x66', '\x66', '\x2d', '\x36', '\x30', '\x39', '\x33',
+ '\x2d', '\x34', '\x64', '\x35', '\x38', '\x2d', '\x38', '\x33',
+ '\x32', '\x37', '\x62', '\x39', '\x34', '\x65', '\x31', '\x65',
+ '\x32', '\x30', '\x00', '\x07', '\x6d', '\x65', '\x74', '\x61',
+ '\x64', '\x61', '\x74', '\x61', '\x00', '\x5c', '\x11', '\x51',
+ '\x56', '\xc9', '\x75', '\x50', '\x47', '\xe3', '\x18', '\xbb',
+ '\xfd', '\x00',
+ },
+ mockColl: &mockCollection{},
+ expectedError: "Error finding objectID",
+ },
+ {
+ label: "Missing input fields",
+ input: map[string]interface{}{
+ "coll": "",
+ "key": "",
+ "tag": "",
+ },
+ expectedError: "Mandatory fields are missing",
+ mockColl: &mockCollection{},
+ },
+ }
+
+ for _, testCase := range testCases {
+ t.Run(testCase.label, func(t *testing.T) {
+ m, _ := NewMongoStore("name", &mongo.Database{})
+ // Override the getCollection function with our mocked version
+ getCollection = func(coll string, m *MongoStore) MongoCollection {
+ return testCase.mockColl
+ }
+
+ decodeBytes = func(sr *mongo.SingleResult) (bson.Raw, error) {
+ return testCase.bson, testCase.mockColl.Err
+ }
+ err := m.Delete(testCase.input["coll"].(string), testCase.input["key"].(string),
+ testCase.input["tag"].(string))
+ if err != nil {
+ if testCase.expectedError == "" {
+ t.Fatalf("Delete method returned an un-expected (%s)", err)
+ }
+ if !strings.Contains(string(err.Error()), testCase.expectedError) {
+ t.Fatalf("Delete method returned an error (%s)", err)
+ }
+ }
+ })
+ }
+}
+
+func TestReadAll(t *testing.T) {
+ testCases := []struct {
+ label string
+ input map[string]interface{}
+ mockColl *mockCollection
+ bson bson.Raw
+ expectedError string
+ expected map[string][]byte
+ }{
+ {
+ label: "Successfully Read all entries",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "tag": "metadata",
+ },
+ mockColl: &mockCollection{
+ mCursor: &mockCursor{
+ // Binary form of
+ // {
+ // "_id" : ObjectId("5c115156777ff85654248ae1"),
+ // "key" : "b82c4bb1-09ff-6093-4d58-8327b94e1e20",
+ // "metadata" : ObjectId("5c115156c9755047e318bbfd")
+ // }
+ bson: bson.Raw{
+ '\x5a', '\x00', '\x00', '\x00', '\x07', '\x5f', '\x69', '\x64',
+ '\x00', '\x5c', '\x11', '\x51', '\x56', '\x77', '\x7f', '\xf8',
+ '\x56', '\x54', '\x24', '\x8a', '\xe1', '\x02', '\x6b', '\x65',
+ '\x79', '\x00', '\x25', '\x00', '\x00', '\x00', '\x62', '\x38',
+ '\x32', '\x63', '\x34', '\x62', '\x62', '\x31', '\x2d', '\x30',
+ '\x39', '\x66', '\x66', '\x2d', '\x36', '\x30', '\x39', '\x33',
+ '\x2d', '\x34', '\x64', '\x35', '\x38', '\x2d', '\x38', '\x33',
+ '\x32', '\x37', '\x62', '\x39', '\x34', '\x65', '\x31', '\x65',
+ '\x32', '\x30', '\x00', '\x07', '\x6d', '\x65', '\x74', '\x61',
+ '\x64', '\x61', '\x74', '\x61', '\x00', '\x5c', '\x11', '\x51',
+ '\x56', '\xc9', '\x75', '\x50', '\x47', '\xe3', '\x18', '\xbb',
+ '\xfd', '\x00',
+ },
+ count: 1,
+ },
+ },
+ expected: map[string][]byte{
+ "b82c4bb1-09ff-6093-4d58-8327b94e1e20": []byte{
+ 92, 17, 81, 86, 201, 117, 80, 71, 227, 24, 187, 253},
+ },
+ },
+ {
+ label: "UnSuccessfully Read of all entries",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "tag": "tagName",
+ },
+ mockColl: &mockCollection{
+ Err: pkgerrors.New("DB Error"),
+ },
+ expectedError: "DB Error",
+ },
+ {
+ label: "UnSuccessfull Readall, tag not found",
+ input: map[string]interface{}{
+ "coll": "collname",
+ "tag": "tagName",
+ },
+ mockColl: &mockCollection{
+ mCursor: &mockCursor{
+ // Binary form of
+ // {
+ // "_id" : ObjectId("5c115156777ff85654248ae1"),
+ // "key" : "b82c4bb1-09ff-6093-4d58-8327b94e1e20",
+ // "metadata" : ObjectId("5c115156c9755047e318bbfd")
+ // }
+ bson: bson.Raw{
+ '\x5a', '\x00', '\x00', '\x00', '\x07', '\x5f', '\x69', '\x64',
+ '\x00', '\x5c', '\x11', '\x51', '\x56', '\x77', '\x7f', '\xf8',
+ '\x56', '\x54', '\x24', '\x8a', '\xe1', '\x02', '\x6b', '\x65',
+ '\x79', '\x00', '\x25', '\x00', '\x00', '\x00', '\x62', '\x38',
+ '\x32', '\x63', '\x34', '\x62', '\x62', '\x31', '\x2d', '\x30',
+ '\x39', '\x66', '\x66', '\x2d', '\x36', '\x30', '\x39', '\x33',
+ '\x2d', '\x34', '\x64', '\x35', '\x38', '\x2d', '\x38', '\x33',
+ '\x32', '\x37', '\x62', '\x39', '\x34', '\x65', '\x31', '\x65',
+ '\x32', '\x30', '\x00', '\x07', '\x6d', '\x65', '\x74', '\x61',
+ '\x64', '\x61', '\x74', '\x61', '\x00', '\x5c', '\x11', '\x51',
+ '\x56', '\xc9', '\x75', '\x50', '\x47', '\xe3', '\x18', '\xbb',
+ '\xfd', '\x00',
+ },
+ count: 1,
+ },
+ },
+ expectedError: "Did not find any objects with tag",
+ },
+ {
+ label: "Missing input fields",
+ input: map[string]interface{}{
+ "coll": "",
+ "tag": "",
+ },
+ expectedError: "Missing collection or tag name",
+ mockColl: &mockCollection{},
+ },
+ }
+
+ for _, testCase := range testCases {
+ t.Run(testCase.label, func(t *testing.T) {
+ m, _ := NewMongoStore("name", &mongo.Database{})
+ // Override the getCollection function with our mocked version
+ getCollection = func(coll string, m *MongoStore) MongoCollection {
+ return testCase.mockColl
+ }
+
+ decodeBytes = func(sr *mongo.SingleResult) (bson.Raw, error) {
+ return testCase.mockColl.mCursor.DecodeBytes()
+ }
+
+ got, err := m.ReadAll(testCase.input["coll"].(string), testCase.input["tag"].(string))
+ if err != nil {
+ if testCase.expectedError == "" {
+ t.Fatalf("Readall method returned an un-expected (%s)", err)
+ }
+ if !strings.Contains(string(err.Error()), testCase.expectedError) {
+ t.Fatalf("Readall method returned an error (%s)", err)
+ }
+ } else {
+ if reflect.DeepEqual(got, testCase.expected) == false {
+ t.Fatalf("Readall returned unexpected data: %v, expected: %v",
+ got, testCase.expected)
+ }
+ }
+ })
+ }
+}
diff --git a/src/k8splugin/internal/db/store.go b/src/k8splugin/internal/db/store.go
new file mode 100644
index 00000000..a235597a
--- /dev/null
+++ b/src/k8splugin/internal/db/store.go
@@ -0,0 +1,83 @@
+/*
+Copyright 2018 Intel Corporation.
+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 db
+
+import (
+ "encoding/json"
+ "reflect"
+
+ pkgerrors "github.com/pkg/errors"
+)
+
+// DBconn interface used to talk a concrete Database connection
+var DBconn Store
+
+// Store is an interface for accessing a database
+type Store interface {
+ // Returns nil if db health is good
+ HealthCheck() error
+
+ // Unmarshal implements any unmarshaling needed for the database
+ Unmarshal(inp []byte, out interface{}) error
+
+ // Creates a new master table with key and links data with tag and
+ // creates a pointer to the newly added data in the master table
+ Create(table, key, tag string, data interface{}) error
+
+ // Reads data for a particular key with specific tag.
+ Read(table, key, tag string) ([]byte, error)
+
+ //TODO: Update(context.Context, string, interface{}) error
+
+ // Deletes a specific tag data for key.
+ // TODO: If tag is empty, it will delete all tags under key.
+ Delete(table, key, tag string) error
+
+ // Reads all master tables and data from the specified tag in table
+ ReadAll(table, tag string) (map[string][]byte, error)
+}
+
+// CreateDBClient creates the DB client
+func CreateDBClient(dbType string) error {
+ var err error
+ switch dbType {
+ case "mongo":
+ // create a mongodb database with k8splugin as the name
+ DBconn, err = NewMongoStore("k8splugin", nil)
+ case "consul":
+ // create a consul kv store
+ DBconn, err = NewConsulStore(nil)
+ default:
+ return pkgerrors.New(dbType + "DB not supported")
+ }
+ return err
+}
+
+// Serialize converts given data into a JSON string
+func Serialize(v interface{}) (string, error) {
+ out, err := json.Marshal(v)
+ if err != nil {
+ return "", pkgerrors.Wrap(err, "Error serializing "+reflect.TypeOf(v).String())
+ }
+ return string(out), nil
+}
+
+// DeSerialize converts string to a json object specified by type
+func DeSerialize(str string, v interface{}) error {
+ err := json.Unmarshal([]byte(str), &v)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Error deSerializing "+str)
+ }
+ return nil
+}
diff --git a/src/k8splugin/internal/db/store_test.go b/src/k8splugin/internal/db/store_test.go
new file mode 100644
index 00000000..eed7065f
--- /dev/null
+++ b/src/k8splugin/internal/db/store_test.go
@@ -0,0 +1,123 @@
+// +build unit
+
+/*
+Copyright 2018 Intel Corporation.
+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 db
+
+import (
+ "reflect"
+ "strings"
+ "testing"
+)
+
+func TestCreateDBClient(t *testing.T) {
+ t.Run("Successfully create DB client", func(t *testing.T) {
+ expected := &MongoStore{}
+
+ err := CreateDBClient("mongo")
+ if err != nil {
+ t.Fatalf("CreateDBClient returned an error (%s)", err)
+ }
+ if reflect.TypeOf(DBconn) != reflect.TypeOf(expected) {
+ t.Fatalf("CreateDBClient set DBconn as:\n result=%T\n expected=%T", DBconn, expected)
+ }
+ })
+ t.Run("Fail to create client for unsupported DB", func(t *testing.T) {
+ err := CreateDBClient("fakeDB")
+ if err == nil {
+ t.Fatal("CreateDBClient didn't return an error")
+ }
+ if !strings.Contains(string(err.Error()), "DB not supported") {
+ t.Fatalf("CreateDBClient method returned an error (%s)", err)
+ }
+ })
+}
+
+func TestSerialize(t *testing.T) {
+
+ inp := map[string]interface{}{
+ "UUID": "123e4567-e89b-12d3-a456-426655440000",
+ "Data": "sdaijsdiodalkfjsdlagf",
+ "Number": 23,
+ "Float": 34.4,
+ "Map": map[string]interface{}{
+ "m1": "m1",
+ "m2": 2,
+ "m3": 3.0,
+ },
+ }
+
+ got, err := Serialize(inp)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ expected := "{\"Data\":\"sdaijsdiodalkfjsdlagf\"," +
+ "\"Float\":34.4,\"Map\":{\"m1\":\"m1\",\"m2\":2,\"m3\":3}," +
+ "\"Number\":23,\"UUID\":\"123e4567-e89b-12d3-a456-426655440000\"}"
+
+ if expected != got {
+ t.Errorf("Serialize returned unexpected string: %s;"+
+ " expected %sv", got, expected)
+ }
+}
+
+func TestDeSerialize(t *testing.T) {
+ testCases := []struct {
+ label string
+ input string
+ expected map[string]interface{}
+ errMsg string
+ }{
+ {
+ label: "Sucessful deserialize entry",
+ input: "{\"Data\":\"sdaijsdiodalkfjsdlagf\"," +
+ "\"Float\":34.4,\"Map\":{\"m1\":\"m1\",\"m3\":3}," +
+ "\"UUID\":\"123e4567-e89b-12d3-a456-426655440000\"}",
+ expected: map[string]interface{}{
+ "UUID": "123e4567-e89b-12d3-a456-426655440000",
+ "Data": "sdaijsdiodalkfjsdlagf",
+ "Float": 34.4,
+ "Map": map[string]interface{}{
+ "m1": "m1",
+ "m3": 3.0,
+ },
+ },
+ },
+ {
+ label: "Fail to deserialize invalid entry",
+ input: "{invalid}",
+ errMsg: "Error deSerializing {invalid}: invalid character 'i' looking for beginning of object key string",
+ },
+ }
+ for _, testCase := range testCases {
+ t.Run(testCase.label, func(t *testing.T) {
+ got := make(map[string]interface{})
+ err := DeSerialize(testCase.input, &got)
+ if err != nil {
+ if testCase.errMsg == "" {
+ t.Fatalf("DeSerialize method return an un-expected (%s)", err)
+ }
+ if !strings.Contains(string(err.Error()), testCase.errMsg) {
+ t.Fatalf("DeSerialize method returned an error (%s)", err)
+ }
+ } else {
+ if !reflect.DeepEqual(testCase.expected, got) {
+ t.Errorf("Serialize returned unexpected : %v;"+
+ " expected %v", got, testCase.expected)
+ }
+ }
+ })
+ }
+}
diff --git a/src/k8splugin/internal/db/testing.go b/src/k8splugin/internal/db/testing.go
new file mode 100644
index 00000000..003399af
--- /dev/null
+++ b/src/k8splugin/internal/db/testing.go
@@ -0,0 +1,79 @@
+// +build unit
+
+/*
+Copyright 2018 Intel Corporation.
+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 db
+
+import (
+ "encoding/json"
+ pkgerrors "github.com/pkg/errors"
+)
+
+//Creating an embedded interface via anonymous variable
+//This allows us to make mockDB satisfy the DatabaseConnection
+//interface even if we are not implementing all the methods in it
+type MockDB struct {
+ Store
+ Items map[string]map[string][]byte
+ Err error
+}
+
+func (m *MockDB) Create(table, key, tag string, data interface{}) error {
+ return m.Err
+}
+
+// MockDB uses simple JSON and not BSON
+func (m *MockDB) Unmarshal(inp []byte, out interface{}) error {
+ err := json.Unmarshal(inp, out)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Unmarshaling json")
+ }
+ return nil
+}
+
+func (m *MockDB) Read(table, key, tag string) ([]byte, error) {
+ if m.Err != nil {
+ return nil, m.Err
+ }
+
+ for k, v := range m.Items {
+ if k == key {
+ return v[tag], nil
+ }
+ }
+
+ return nil, m.Err
+}
+
+func (m *MockDB) Delete(table, key, tag string) error {
+ return m.Err
+}
+
+func (m *MockDB) ReadAll(table, tag string) (map[string][]byte, error) {
+ if m.Err != nil {
+ return nil, m.Err
+ }
+
+ ret := make(map[string][]byte)
+
+ for k, v := range m.Items {
+ for k1, v1 := range v {
+ if k1 == tag {
+ ret[k] = v1
+ }
+ }
+ }
+
+ return ret, nil
+}