/
consul.go
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/
consul.go
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// Copyright 2021 Layotto Authors
// 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 utils
import (
"errors"
"github.com/hashicorp/consul/api"
"mosn.io/layotto/components/lock"
)
type ConsulClient interface {
Session() *api.Session
}
type ConsulKV interface {
Acquire(p *api.KVPair, q *api.WriteOptions) (bool, *api.WriteMeta, error)
Release(p *api.KVPair, q *api.WriteOptions) (bool, *api.WriteMeta, error)
}
type SessionFactory interface {
Create(se *api.SessionEntry, q *api.WriteOptions) (string, *api.WriteMeta, error)
Destroy(id string, q *api.WriteOptions) (*api.WriteMeta, error)
}
const (
consulAddress = "address"
scheme = "scheme"
consulUsername = "username"
consulPassword = "password"
defaultScheme = "http"
)
type ConsulMetadata struct {
Address string
Scheme string
Username string
Password string
}
func ParseConsulMetadata(meta lock.Metadata) (ConsulMetadata, error) {
m := ConsulMetadata{}
if val, ok := meta.Properties[consulAddress]; ok && val != "" {
m.Address = val
} else {
return m, errors.New("consul error: missing host address")
}
m.Scheme = defaultScheme
if val, ok := meta.Properties[scheme]; ok && val != "" {
m.Scheme = val
}
if val, ok := meta.Properties[consulUsername]; ok && val != "" {
m.Username = val
}
if val, ok := meta.Properties[consulPassword]; ok && val != "" {
m.Password = val
}
return m, nil
}