mirror of
https://github.com/etcd-io/etcd.git
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119 lines
3.2 KiB
Go
119 lines
3.2 KiB
Go
// Copyright 2015 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package client
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import "net/rpc"
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type Status struct {
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// State gives the human-readable status of an agent (e.g., "started" or "terminated")
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State string
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// TODO: gather more informations
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// TODO: memory usage, raft information, etc..
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}
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type Agent interface {
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ID() uint64
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// Start starts a new etcd with the given args on the agent machine.
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Start(args ...string) (int, error)
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// Stop stops the existing etcd the agent started.
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Stop() error
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// Restart restarts the existing etcd the agent stopped.
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Restart() (int, error)
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// Cleanup stops the exiting etcd the agent started, then archives log and its data dir.
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Cleanup() error
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// Terminate stops the exiting etcd the agent started and removes its data dir.
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Terminate() error
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// DropPort drops all network packets at the given port.
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DropPort(port int) error
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// RecoverPort stops dropping all network packets at the given port.
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RecoverPort(port int) error
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// SetLatency slows down network by introducing latency.
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SetLatency(ms, rv int) error
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// RemoveLatency removes latency introduced by SetLatency.
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RemoveLatency() error
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// Status returns the status of etcd on the agent
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Status() (Status, error)
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}
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type agent struct {
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endpoint string
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rpcClient *rpc.Client
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}
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func NewAgent(endpoint string) (Agent, error) {
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c, err := rpc.DialHTTP("tcp", endpoint)
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if err != nil {
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return nil, err
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}
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return &agent{endpoint, c}, nil
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}
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func (a *agent) Start(args ...string) (int, error) {
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var pid int
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err := a.rpcClient.Call("Agent.RPCStart", args, &pid)
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if err != nil {
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return -1, err
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}
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return pid, nil
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}
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func (a *agent) Stop() error {
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return a.rpcClient.Call("Agent.RPCStop", struct{}{}, nil)
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}
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func (a *agent) Restart() (int, error) {
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var pid int
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err := a.rpcClient.Call("Agent.RPCRestart", struct{}{}, &pid)
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if err != nil {
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return -1, err
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}
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return pid, nil
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}
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func (a *agent) Cleanup() error {
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return a.rpcClient.Call("Agent.RPCCleanup", struct{}{}, nil)
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}
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func (a *agent) Terminate() error {
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return a.rpcClient.Call("Agent.RPCTerminate", struct{}{}, nil)
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}
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func (a *agent) DropPort(port int) error {
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return a.rpcClient.Call("Agent.RPCDropPort", port, nil)
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}
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func (a *agent) RecoverPort(port int) error {
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return a.rpcClient.Call("Agent.RPCRecoverPort", port, nil)
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}
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func (a *agent) SetLatency(ms, rv int) error {
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return a.rpcClient.Call("Agent.RPCSetLatency", []int{ms, rv}, nil)
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}
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func (a *agent) RemoveLatency() error {
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return a.rpcClient.Call("Agent.RPCRemoveLatency", struct{}{}, nil)
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}
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func (a *agent) Status() (Status, error) {
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var s Status
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err := a.rpcClient.Call("Agent.RPCStatus", struct{}{}, &s)
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return s, err
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}
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func (a *agent) ID() uint64 {
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panic("not implemented")
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}
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