Add vendor files for spf13/viper

vendor/github.com/xordataexchange/crypt/backend/consul/consul.go

@@ -0,0 +1,87 @@
+package consul
+
+import (
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/xordataexchange/crypt/backend"
+
+	"github.com/armon/consul-api"
+)
+
+type Client struct {
+	client    *consulapi.KV
+	waitIndex uint64
+}
+
+func New(machines []string) (*Client, error) {
+	conf := consulapi.DefaultConfig()
+	if len(machines) > 0 {
+		conf.Address = machines[0]
+	}
+	client, err := consulapi.NewClient(conf)
+	if err != nil {
+		return nil, err
+	}
+	return &Client{client.KV(), 0}, nil
+}
+
+func (c *Client) Get(key string) ([]byte, error) {
+	kv, _, err := c.client.Get(key, nil)
+	if err != nil {
+		return nil, err
+	}
+	if kv == nil {
+		return nil, fmt.Errorf("Key ( %s ) was not found.", key)
+	}
+	return kv.Value, nil
+}
+
+func (c *Client) List(key string) (backend.KVPairs, error) {
+	pairs, _, err := c.client.List(key, nil)
+	if err != nil {
+		return nil, err
+	}
+	if err != nil {
+		return nil, err
+	}
+	ret := make(backend.KVPairs, len(pairs), len(pairs))
+	for i, kv := range pairs {
+		ret[i] = &backend.KVPair{Key: kv.Key, Value: kv.Value}
+	}
+	return ret, nil
+}
+
+func (c *Client) Set(key string, value []byte) error {
+	key = strings.TrimPrefix(key, "/")
+	kv := &consulapi.KVPair{
+		Key:   key,
+		Value: value,
+	}
+	_, err := c.client.Put(kv, nil)
+	return err
+}
+
+func (c *Client) Watch(key string, stop chan bool) <-chan *backend.Response {
+	respChan := make(chan *backend.Response, 0)
+	go func() {
+		for {
+			opts := consulapi.QueryOptions{
+				WaitIndex: c.waitIndex,
+			}
+			keypair, meta, err := c.client.Get(key, &opts)
+			if keypair == nil && err == nil {
+				err = fmt.Errorf("Key ( %s ) was not found.", key)
+			}
+			if err != nil {
+				respChan <- &backend.Response{nil, err}
+				time.Sleep(time.Second * 5)
+				continue
+			}
+			c.waitIndex = meta.LastIndex
+			respChan <- &backend.Response{keypair.Value, nil}
+		}
+	}()
+	return respChan
+}