micro/sync/data/consul/consul.go

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2019-05-31 02:43:23 +03:00
// Package consul is a consul implementation of kv
package consul
import (
"fmt"
"net"
"github.com/hashicorp/consul/api"
"github.com/micro/go-micro/sync/data"
)
type ckv struct {
client *api.Client
}
func (c *ckv) Read(key string) (*data.Record, error) {
keyval, _, err := c.client.KV().Get(key, nil)
if err != nil {
return nil, err
}
if keyval == nil {
return nil, data.ErrNotFound
}
return &data.Record{
Key: keyval.Key,
Value: keyval.Value,
}, nil
}
func (c *ckv) Delete(key string) error {
_, err := c.client.KV().Delete(key, nil)
return err
}
func (c *ckv) Write(record *data.Record) error {
_, err := c.client.KV().Put(&api.KVPair{
Key: record.Key,
Value: record.Value,
}, nil)
return err
}
func (c *ckv) Dump() ([]*data.Record, error) {
keyval, _, err := c.client.KV().List("/", nil)
if err != nil {
return nil, err
}
if keyval == nil {
return nil, data.ErrNotFound
}
var vals []*data.Record
for _, keyv := range keyval {
vals = append(vals, &data.Record{
Key: keyv.Key,
Value: keyv.Value,
})
}
return vals, nil
}
func (c *ckv) String() string {
return "consul"
}
func NewData(opts ...data.Option) data.Data {
var options data.Options
for _, o := range opts {
o(&options)
}
config := api.DefaultConfig()
// set host
// config.Host something
// check if there are any addrs
if len(options.Nodes) > 0 {
addr, port, err := net.SplitHostPort(options.Nodes[0])
if ae, ok := err.(*net.AddrError); ok && ae.Err == "missing port in address" {
port = "8500"
config.Address = fmt.Sprintf("%s:%s", options.Nodes[0], port)
} else if err == nil {
config.Address = fmt.Sprintf("%s:%s", addr, port)
}
}
client, _ := api.NewClient(config)
return &ckv{
client: client,
}
}