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authorrsood <ritu.sood@intel.com>2019-04-10 05:00:04 +0000
committerrsood <ritu.sood@intel.com>2019-04-11 04:53:43 +0000
commit10337dd73e55ecf6327515e70a60aef4325af589 (patch)
treeb580b094ecd444a6fe8b9a8d4892c394ab0d9d3f /src/k8splugin/internal/rb/config_template.go
parent9e001472ab04fb0b5b85e38266bacd9a377cc343 (diff)
Day 2 Configuration API's
This patch adds Configuration API's https://wiki.onap.org/display/DW/MultiCloud+K8s-Plugin-service+API%27s Change-Id: I52ebfc5aa980ec8af4a31569d569216e9a2a760c Issue-ID: MULTICLOUD-464 Signed-off-by: rsood <ritu.sood@intel.com>
Diffstat (limited to 'src/k8splugin/internal/rb/config_template.go')
-rw-r--r--src/k8splugin/internal/rb/config_template.go257
1 files changed, 257 insertions, 0 deletions
diff --git a/src/k8splugin/internal/rb/config_template.go b/src/k8splugin/internal/rb/config_template.go
new file mode 100644
index 00000000..cdb1b907
--- /dev/null
+++ b/src/k8splugin/internal/rb/config_template.go
@@ -0,0 +1,257 @@
+/*
+ * 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 rb
+
+import (
+ "bytes"
+ "encoding/json"
+ "io/ioutil"
+ "k8splugin/internal/db"
+ "os"
+ "path/filepath"
+
+ "encoding/base64"
+
+ pkgerrors "github.com/pkg/errors"
+ "log"
+)
+
+// ConfigTemplate contains the parameters needed for ConfigTemplates
+type ConfigTemplate struct {
+ TemplateName string `json:"template-name"`
+ Description string `json:"description"`
+ ChartName string
+}
+
+// ConfigTemplateManager is an interface exposes the resource bundle ConfigTemplate functionality
+type ConfigTemplateManager interface {
+ Create(rbName, rbVersion string, p ConfigTemplate) error
+ Get(rbName, rbVersion, templateName string) (ConfigTemplate, error)
+ Delete(rbName, rbVersion, templateName string) error
+ Upload(rbName, rbVersion, templateName string, inp []byte) error
+}
+
+// ConfigTemplateKey is key struct
+type ConfigTemplateKey struct {
+ RBName string `json:"rb-name"`
+ RBVersion string `json:"rb-version"`
+ TemplateName string `json:"template-name"`
+}
+
+// We will use json marshalling to convert to string to
+// preserve the underlying structure.
+func (dk ConfigTemplateKey) String() string {
+ out, err := json.Marshal(dk)
+ if err != nil {
+ return ""
+ }
+
+ return string(out)
+}
+
+// ConfigTemplateClient implements the ConfigTemplateManager
+// It will also be used to maintain some localized state
+type ConfigTemplateClient struct {
+ storeName string
+ tagMeta string
+ tagContent string
+}
+
+// NewConfigTemplateClient returns an instance of the ConfigTemplateClient
+// which implements the ConfigTemplateManager
+func NewConfigTemplateClient() *ConfigTemplateClient {
+ return &ConfigTemplateClient{
+ storeName: "rbdef",
+ tagMeta: "metadata",
+ tagContent: "content",
+ }
+}
+
+// Create an entry for the resource bundle ConfigTemplate in the database
+func (v *ConfigTemplateClient) Create(rbName, rbVersion string, p ConfigTemplate) error {
+
+ log.Printf("[ConfigiTemplate]: create %s", rbName)
+ // Name is required
+ if p.TemplateName == "" {
+ return pkgerrors.New("Name is required for Resource Bundle ConfigTemplate")
+ }
+
+ //Check if ConfigTemplate already exists
+ _, err := v.Get(rbName, rbVersion, p.TemplateName)
+ if err == nil {
+ return pkgerrors.New(" ConfigTemplate already exists for this Definition")
+ }
+
+ //Check if provided resource bundle information is valid
+ _, err = NewDefinitionClient().Get(rbName, rbVersion)
+ if err != nil {
+ return pkgerrors.Errorf("Invalid Resource Bundle ID provided: %s", err.Error())
+ }
+
+ key := ConfigTemplateKey{
+ RBName: rbName,
+ RBVersion: rbVersion,
+ TemplateName: p.TemplateName,
+ }
+
+ err = db.DBconn.Create(v.storeName, key, v.tagMeta, p)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Creating ConfigTemplate DB Entry")
+ }
+
+ return nil
+}
+
+// Get returns the Resource Bundle ConfigTemplate for corresponding ID
+func (v *ConfigTemplateClient) Get(rbName, rbVersion, templateName string) (ConfigTemplate, error) {
+ key := ConfigTemplateKey{
+ RBName: rbName,
+ RBVersion: rbVersion,
+ TemplateName: templateName,
+ }
+ value, err := db.DBconn.Read(v.storeName, key, v.tagMeta)
+ if err != nil {
+ return ConfigTemplate{}, pkgerrors.Wrap(err, "Get ConfigTemplate")
+ }
+
+ //value is a byte array
+ if value != nil {
+ template := ConfigTemplate{}
+ err = db.DBconn.Unmarshal(value, &template)
+ if err != nil {
+ return ConfigTemplate{}, pkgerrors.Wrap(err, "Unmarshaling ConfigTemplate Value")
+ }
+ return template, nil
+ }
+
+ return ConfigTemplate{}, pkgerrors.New("Error getting ConfigTemplate")
+}
+
+// Delete the Resource Bundle ConfigTemplate from database
+func (v *ConfigTemplateClient) Delete(rbName, rbVersion, templateName string) error {
+ key := ConfigTemplateKey{
+ RBName: rbName,
+ RBVersion: rbVersion,
+ TemplateName: templateName,
+ }
+ err := db.DBconn.Delete(v.storeName, key, v.tagMeta)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Delete ConfigTemplate")
+ }
+
+ err = db.DBconn.Delete(v.storeName, key, v.tagContent)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Delete ConfigTemplate Content")
+ }
+
+ return nil
+}
+
+// Upload the contents of resource bundle into database
+func (v *ConfigTemplateClient) Upload(rbName, rbVersion, templateName string, inp []byte) error {
+
+ log.Printf("[ConfigTemplate]: Upload %s", templateName)
+ key := ConfigTemplateKey{
+ RBName: rbName,
+ RBVersion: rbVersion,
+ TemplateName: templateName,
+ }
+ //ignore the returned data here.
+ t, err := v.Get(rbName, rbVersion, templateName)
+ if err != nil {
+ return pkgerrors.Errorf("Invalid ConfigTemplate Name provided %s", err.Error())
+ }
+
+ err = isTarGz(bytes.NewBuffer(inp))
+ if err != nil {
+ return pkgerrors.Errorf("Error in file format %s", err.Error())
+ }
+
+ chartBasePath, err := ExtractTarBall(bytes.NewBuffer(inp))
+ if err != nil {
+ return pkgerrors.Wrap(err, "Extracting Template")
+ }
+
+ finfo, err := ioutil.ReadDir(chartBasePath)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Detecting chart name")
+ }
+
+ //Store the first directory with Chart.yaml found as the chart name
+ for _, f := range finfo {
+ if f.IsDir() {
+ //Check if Chart.yaml exists
+ if _, err = os.Stat(filepath.Join(chartBasePath, f.Name(), "Chart.yaml")); err == nil {
+ t.ChartName = f.Name()
+ break
+ }
+ }
+ }
+ if t.ChartName == "" {
+ return pkgerrors.New("Invalid template no Chart.yaml file found")
+ }
+
+ err = db.DBconn.Create(v.storeName, key, v.tagMeta, t)
+ if err != nil {
+ return pkgerrors.Wrap(err, "Creating ConfigTemplate DB Entry")
+ }
+
+ //Encode given byte stream to text for storage
+ encodedStr := base64.StdEncoding.EncodeToString(inp)
+ err = db.DBconn.Create(v.storeName, key, v.tagContent, encodedStr)
+ if err != nil {
+ return pkgerrors.Errorf("Error uploading data to db %s", err.Error())
+ }
+
+ return nil
+}
+
+// Download the contents of the ConfigTemplate from DB
+// Returns a byte array of the contents
+func (v *ConfigTemplateClient) Download(rbName, rbVersion, templateName string) ([]byte, error) {
+
+ log.Printf("[ConfigTemplate]: Download %s", templateName)
+ //ignore the returned data here
+ //Check if rb is valid
+ _, err := v.Get(rbName, rbVersion, templateName)
+ if err != nil {
+ return nil, pkgerrors.Errorf("Invalid ConfigTemplate Name provided: %s", err.Error())
+ }
+
+ key := ConfigTemplateKey{
+ RBName: rbName,
+ RBVersion: rbVersion,
+ TemplateName: templateName,
+ }
+ value, err := db.DBconn.Read(v.storeName, key, v.tagContent)
+ if err != nil {
+ return nil, pkgerrors.Wrap(err, "Get Resource ConfigTemplate content")
+ }
+
+ if value != nil {
+ //Decode the string from base64
+ out, err := base64.StdEncoding.DecodeString(string(value))
+ if err != nil {
+ return nil, pkgerrors.Wrap(err, "Decode base64 string")
+ }
+
+ if out != nil && len(out) != 0 {
+ return out, nil
+ }
+ }
+ return nil, pkgerrors.New("Error downloading ConfigTemplate content")
+}