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authorKiran Kamineni <kiran.k.kamineni@intel.com>2019-04-18 16:38:20 -0700
committerKiran Kamineni <kiran.k.kamineni@intel.com>2019-04-19 15:48:48 -0700
commit42f8f006ab01692d7de9cecc06521eaf58743c0d (patch)
tree03bc5fe0dd662cec4c36e2b67da84cfd30602950 /src/k8splugin/internal
parent5414c23063815207c68bfc7398561cec7409c963 (diff)
Move configuration into config files
Move k8splugin configuration into config files instead of using environment variables. Issue-ID: MULTICLOUD-579 Change-Id: I7b76d5a14d24f002a8db484097a31fb5e908b6f8 Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>
Diffstat (limited to 'src/k8splugin/internal')
-rw-r--r--src/k8splugin/internal/app/client_test.go2
-rw-r--r--src/k8splugin/internal/app/instance.go6
-rw-r--r--src/k8splugin/internal/app/instance_test.go14
-rw-r--r--src/k8splugin/internal/config/config.go128
-rw-r--r--src/k8splugin/internal/config/config_test.go40
-rw-r--r--src/k8splugin/internal/db/consul.go4
-rw-r--r--src/k8splugin/internal/db/mongo.go5
-rw-r--r--src/k8splugin/internal/utils.go36
8 files changed, 192 insertions, 43 deletions
diff --git a/src/k8splugin/internal/app/client_test.go b/src/k8splugin/internal/app/client_test.go
index d023fcff..4cc533e2 100644
--- a/src/k8splugin/internal/app/client_test.go
+++ b/src/k8splugin/internal/app/client_test.go
@@ -48,7 +48,7 @@ func TestInit(t *testing.T) {
t.Run("Successfully create Kube Client", func(t *testing.T) {
kubeClient := KubernetesClient{}
- err := kubeClient.init("../../mock_files/mock_configs/mock_config")
+ err := kubeClient.init("../../mock_files/mock_configs/mock_kube_config")
if err != nil {
t.Fatalf("TestGetKubeClient returned an error (%s)", err)
}
diff --git a/src/k8splugin/internal/app/instance.go b/src/k8splugin/internal/app/instance.go
index 8e9a2b7a..8d289d85 100644
--- a/src/k8splugin/internal/app/instance.go
+++ b/src/k8splugin/internal/app/instance.go
@@ -20,8 +20,8 @@ import (
"encoding/base64"
"encoding/json"
"math/rand"
- "os"
+ "k8splugin/internal/config"
"k8splugin/internal/db"
"k8splugin/internal/helm"
"k8splugin/internal/rb"
@@ -120,7 +120,7 @@ func (v *InstanceClient) Create(i InstanceRequest) (InstanceResponse, error) {
}
k8sClient := KubernetesClient{}
- err = k8sClient.init(os.Getenv("KUBE_CONFIG_DIR") + "/" + i.CloudRegion)
+ err = k8sClient.init(config.GetConfiguration().KubeConfigDir + "/" + i.CloudRegion)
if err != nil {
return InstanceResponse{}, pkgerrors.Wrap(err, "Getting CloudRegion Information")
}
@@ -185,7 +185,7 @@ func (v *InstanceClient) Delete(id string) error {
}
k8sClient := KubernetesClient{}
- err = k8sClient.init(os.Getenv("KUBE_CONFIG_DIR") + "/" + inst.CloudRegion)
+ err = k8sClient.init(config.GetConfiguration().KubeConfigDir + "/" + inst.CloudRegion)
if err != nil {
return pkgerrors.Wrap(err, "Getting CloudRegion Information")
}
diff --git a/src/k8splugin/internal/app/instance_test.go b/src/k8splugin/internal/app/instance_test.go
index 3828ed38..ab39dfb7 100644
--- a/src/k8splugin/internal/app/instance_test.go
+++ b/src/k8splugin/internal/app/instance_test.go
@@ -15,11 +15,11 @@ package app
import (
"log"
- "os"
"reflect"
"testing"
utils "k8splugin/internal"
+ "k8splugin/internal/config"
"k8splugin/internal/db"
"k8splugin/internal/helm"
"k8splugin/internal/rb"
@@ -153,14 +153,10 @@ func TestInstanceCreate(t *testing.T) {
RBName: "test-rbdef",
RBVersion: "v1",
ProfileName: "profile1",
- CloudRegion: "mock_config",
- }
-
- err := os.Setenv("KUBE_CONFIG_DIR", "../../mock_files/mock_configs")
- if err != nil {
- t.Fatalf("TestInstanceCreate returned an error (%s)", err)
+ CloudRegion: "mock_kube_config",
}
+ config.SetConfigValue("KubeConfigDir", "../../mock_files/mock_configs")
ir, err := ic.Create(input)
if err != nil {
t.Fatalf("TestInstanceCreate returned an error (%s)", err)
@@ -326,7 +322,7 @@ func TestInstanceDelete(t *testing.T) {
"namespace":"testnamespace",
"rb-name":"test-rbdef",
"rb-version":"v1",
- "cloud-region":"mock_config",
+ "cloud-region":"mock_kube_config",
"resources": [
{
"GVK": {
@@ -369,7 +365,7 @@ func TestInstanceDelete(t *testing.T) {
"namespace":"testnamespace",
"rb-name":"test-rbdef",
"rb-version":"v1",
- "cloud-region":"mock_config",
+ "cloud-region":"mock_kube_config",
"resources": [
{
"GVK": {
diff --git a/src/k8splugin/internal/config/config.go b/src/k8splugin/internal/config/config.go
new file mode 100644
index 00000000..c3ca9054
--- /dev/null
+++ b/src/k8splugin/internal/config/config.go
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2019 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 config
+
+import (
+ "encoding/json"
+ "log"
+ "os"
+ "reflect"
+)
+
+// Configuration loads up all the values that are used to configure
+// backend implementations
+type Configuration struct {
+ CAFile string `json:"ca-file"`
+ ServerCert string `json:"server-cert"`
+ ServerKey string `json:"server-key"`
+ Password string `json:"password"`
+ DatabaseAddress string `json:"database-address"`
+ DatabaseType string `json:"database-type"`
+ PluginDir string `json:"plugin-dir"`
+ EtcdIP string `json:"etcd-ip"`
+ EtcdCert string `json:"etcd-cert"`
+ EtcdKey string `json:"etcd-key"`
+ EtcdCAFile string `json:"etcd-ca-file"`
+ KubeConfigDir string `json:"kube-config-dir"`
+ OVNCentralAddress string `json:"ovn-central-address"`
+}
+
+// Config is the structure that stores the configuration
+var gConfig *Configuration
+
+// readConfigFile reads the specified smsConfig file to setup some env variables
+func readConfigFile(file string) (*Configuration, error) {
+ f, err := os.Open(file)
+ if err != nil {
+ return defaultConfiguration(), err
+ }
+ defer f.Close()
+
+ // Setup some defaults here
+ // If the json file has values in it, the defaults will be overwritten
+ conf := defaultConfiguration()
+
+ // Read the configuration from json file
+ decoder := json.NewDecoder(f)
+ err = decoder.Decode(conf)
+ if err != nil {
+ return conf, err
+ }
+
+ return conf, nil
+}
+
+func defaultConfiguration() *Configuration {
+ cwd, err := os.Getwd()
+ if err != nil {
+ log.Println("Error getting cwd. Using .")
+ cwd = "."
+ }
+
+ return &Configuration{
+ CAFile: "ca.cert",
+ ServerCert: "server.cert",
+ ServerKey: "server.key",
+ Password: "",
+ DatabaseAddress: "127.0.0.1",
+ DatabaseType: "mongo",
+ PluginDir: cwd,
+ EtcdIP: "127.0.0.1",
+ EtcdCert: "etcd.cert",
+ EtcdKey: "etcd.key",
+ EtcdCAFile: "etcd-ca.cert",
+ KubeConfigDir: cwd,
+ OVNCentralAddress: "127.0.0.1",
+ }
+}
+
+// GetConfiguration returns the configuration for the app.
+// It will try to load it if it is not already loaded.
+func GetConfiguration() *Configuration {
+ if gConfig == nil {
+ conf, err := readConfigFile("k8sconfig.json")
+ if err != nil {
+ log.Println("Error loading config file. Using defaults.")
+ }
+ gConfig = conf
+ }
+
+ return gConfig
+}
+
+// SetConfigValue sets a value in the configuration
+// This is mostly used to customize the application and
+// should be used carefully.
+func SetConfigValue(key string, value string) *Configuration {
+ c := GetConfiguration()
+ if value == "" || key == "" {
+ return c
+ }
+
+ v := reflect.ValueOf(c).Elem()
+ if v.Kind() == reflect.Struct {
+ f := v.FieldByName(key)
+ if f.IsValid() {
+ if f.CanSet() {
+ if f.Kind() == reflect.String {
+ f.SetString(value)
+ }
+ }
+ }
+ }
+ return c
+}
diff --git a/src/k8splugin/internal/config/config_test.go b/src/k8splugin/internal/config/config_test.go
new file mode 100644
index 00000000..ddebfb27
--- /dev/null
+++ b/src/k8splugin/internal/config/config_test.go
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2019 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 config
+
+import (
+ "testing"
+)
+
+func TestReadConfigurationFile(t *testing.T) {
+ t.Run("Non Existent Configuration File", func(t *testing.T) {
+ _, err := readConfigFile("filedoesnotexist.json")
+ if err == nil {
+ t.Fatal("ReadConfiguationFile: Expected Error, got nil")
+ }
+ })
+
+ t.Run("Read Configuration File", func(t *testing.T) {
+ conf, err := readConfigFile("../../mock_files/mock_configs/mock_config.json")
+ if err != nil {
+ t.Fatal("ReadConfigurationFile: Error reading file")
+ }
+ if conf.DatabaseType != "mock_db_test" {
+ t.Fatal("ReadConfigurationFile: Incorrect entry read from file")
+ }
+ })
+}
diff --git a/src/k8splugin/internal/db/consul.go b/src/k8splugin/internal/db/consul.go
index 0977cfba..40028c64 100644
--- a/src/k8splugin/internal/db/consul.go
+++ b/src/k8splugin/internal/db/consul.go
@@ -14,7 +14,7 @@ limitations under the License.
package db
import (
- "os"
+ k8sconfig "k8splugin/internal/config"
"github.com/hashicorp/consul/api"
pkgerrors "github.com/pkg/errors"
@@ -38,7 +38,7 @@ type ConsulStore struct {
func NewConsulStore(store ConsulKVStore) (Store, error) {
if store == nil {
config := api.DefaultConfig()
- config.Address = os.Getenv("DATABASE_IP") + ":8500"
+ config.Address = k8sconfig.GetConfiguration().DatabaseAddress + ":8500"
consulClient, err := api.NewClient(config)
if err != nil {
diff --git a/src/k8splugin/internal/db/mongo.go b/src/k8splugin/internal/db/mongo.go
index a9e9d98a..d4525222 100644
--- a/src/k8splugin/internal/db/mongo.go
+++ b/src/k8splugin/internal/db/mongo.go
@@ -19,7 +19,8 @@ package db
import (
"golang.org/x/net/context"
"log"
- "os"
+
+ "k8splugin/internal/config"
pkgerrors "github.com/pkg/errors"
"go.mongodb.org/mongo-driver/bson"
@@ -76,7 +77,7 @@ var cursorClose = func(ctx context.Context, cursor *mongo.Cursor) error {
// 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"
+ ip := "mongodb://" + config.GetConfiguration().DatabaseAddress + ":27017"
clientOptions := options.Client()
clientOptions.ApplyURI(ip)
mongoClient, err := mongo.NewClient(clientOptions)
diff --git a/src/k8splugin/internal/utils.go b/src/k8splugin/internal/utils.go
index 3b08dd26..7785733d 100644
--- a/src/k8splugin/internal/utils.go
+++ b/src/k8splugin/internal/utils.go
@@ -15,13 +15,15 @@ package utils
import (
"io/ioutil"
- "k8splugin/internal/db"
"log"
"os"
"path/filepath"
"plugin"
"strings"
+ "k8splugin/internal/config"
+ "k8splugin/internal/db"
+
pkgerrors "github.com/pkg/errors"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/kubernetes/scheme"
@@ -65,23 +67,10 @@ var DecodeYAML = func(path string, into runtime.Object) (runtime.Object, error)
return obj, nil
}
-// CheckEnvVariables checks for required Environment variables
-func CheckEnvVariables() error {
- envList := []string{"CSAR_DIR", "KUBE_CONFIG_DIR", "PLUGINS_DIR",
- "DATABASE_TYPE", "DATABASE_IP", "OVN_CENTRAL_ADDRESS"}
- for _, env := range envList {
- if _, ok := os.LookupEnv(env); !ok {
- return pkgerrors.New("environment variable " + env + " not set")
- }
- }
-
- return nil
-}
-
// CheckDatabaseConnection checks if the database is up and running and
// plugin can talk to it
func CheckDatabaseConnection() error {
- err := db.CreateDBClient(os.Getenv("DATABASE_TYPE"))
+ err := db.CreateDBClient(config.GetConfiguration().DatabaseType)
if err != nil {
return pkgerrors.Cause(err)
}
@@ -92,10 +81,10 @@ func CheckDatabaseConnection() error {
}
// TODO Convert these to configuration files instead of environment variables.
c := db.EtcdConfig{
- Endpoint: os.Getenv("ETCD_ENDPOINT_IP"),
- CertFile: os.Getenv("ETCD_CERT_FILE"),
- KeyFile: os.Getenv("ETCD_KEY_FILE"),
- CAFile: os.Getenv("ETCD_TRUSTED_CA_FILE"),
+ Endpoint: config.GetConfiguration().EtcdIP,
+ CertFile: config.GetConfiguration().EtcdCert,
+ KeyFile: config.GetConfiguration().EtcdKey,
+ CAFile: config.GetConfiguration().EtcdCAFile,
}
err = db.NewEtcdClient(nil, c)
if err != nil {
@@ -106,7 +95,7 @@ func CheckDatabaseConnection() error {
// LoadPlugins loads all the compiled .so plugins
func LoadPlugins() error {
- pluginsDir := os.Getenv("PLUGINS_DIR")
+ pluginsDir := config.GetConfiguration().PluginDir
err := filepath.Walk(pluginsDir,
func(path string, info os.FileInfo, err error) error {
if strings.Contains(path, ".so") {
@@ -127,12 +116,7 @@ func LoadPlugins() error {
// CheckInitialSettings is used to check initial settings required to start api
func CheckInitialSettings() error {
- err := CheckEnvVariables()
- if err != nil {
- return pkgerrors.Cause(err)
- }
-
- err = CheckDatabaseConnection()
+ err := CheckDatabaseConnection()
if err != nil {
return pkgerrors.Cause(err)
}