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/*
* 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 (
"errors"
consulapi "github.com/hashicorp/consul/api"
"os"
)
type ConsulStruct struct {
consulClient *consulapi.Client
}
func (c *ConsulStruct) InitializeDatastoreClient() error {
if os.Getenv("DATASTORE_IP") == "" {
return errors.New("DATASTORE_IP environment variable not set.")
}
config := consulapi.DefaultConfig()
config.Address = os.Getenv("DATASTORE_IP") + ":8500"
client, err := consulapi.NewClient(config)
if err != nil {
return err
}
c.consulClient = client
return nil
}
func (c *ConsulStruct) CheckDatastoreHealth() error {
kv := c.consulClient.KV()
_, _, err := kv.Get("test", nil)
if err != nil {
return errors.New("[ERROR] Cannot talk to Datastore. Check if it is running/reachable.")
}
return nil
}
func (c *ConsulStruct) RequestPUT(prefix string, key string, value string) error {
key = prefix + key
kv := c.consulClient.KV()
p := &consulapi.KVPair{Key: key, Value: []byte(value)}
_, err := kv.Put(p, nil)
if err != nil {
return err
}
return nil
}
func (c *ConsulStruct) RequestGET(prefix string, key string) (string, error) {
key = prefix + key
kv := c.consulClient.KV()
pair, _, err := kv.Get(key, nil)
if pair == nil {
return string("No value found for key."), err
}
return string(pair.Value), err
}
func (c *ConsulStruct) RequestGETS() ([]string, error) {
kv := c.consulClient.KV()
pairs, _, err := kv.List("", nil)
if len(pairs) == 0 {
return []string{"No keys found."}, err
}
var res []string
for _, keypair := range pairs {
res = append(res, keypair.Key)
}
return res, err
}
func (c *ConsulStruct) RequestDELETE(prefix string, key string) error {
key = prefix + key
kv := c.consulClient.KV()
_, err := kv.Delete(key, nil)
if err != nil {
return err
}
return nil
}
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