forked from pulumi/pulumi
/
proxy_unix.go
103 lines (85 loc) · 2.54 KB
/
proxy_unix.go
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// Copyright 2016-2018, Pulumi Corporation.
//
// 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.
//+build !windows
package main
import (
"io"
"io/ioutil"
"os"
"path"
"syscall"
"github.com/pulumi/pulumi/sdk/v2/go/common/util/contract"
"github.com/pulumi/pulumi/sdk/v2/go/common/util/logging"
)
// Unix specific pipe implementation. Fairly simple as it sits on top of a pair of standard fifo
// files that we can communicate over. Slightly complex as this involves extra cleanup steps to
// ensure they're cleaned up when we're done.
func createPipes() (pipes, error) {
dir, err := ioutil.TempDir("", "pulumi-node-pipes")
if err != nil {
return nil, err
}
invokeReqPath, invokeResPath := path.Join(dir, "invoke_req"), path.Join(dir, "invoke_res")
return &unixPipes{
dir: dir,
reqPath: invokeReqPath,
resPath: invokeResPath,
}, nil
}
type unixPipes struct {
dir string
reqPath, resPath string
reqPipe, resPipe *os.File
}
func (p *unixPipes) directory() string {
return p.dir
}
func (p *unixPipes) reader() io.Reader {
return p.reqPipe
}
func (p *unixPipes) writer() io.Writer {
return p.resPipe
}
func (p *unixPipes) connect() error {
if err := syscall.Mkfifo(path.Join(p.dir, "invoke_req"), 0600); err != nil {
logging.V(10).Infof("createPipes: Received error opening request pipe: %s\n", err)
return err
}
if err := syscall.Mkfifo(path.Join(p.dir, "invoke_res"), 0600); err != nil {
logging.V(10).Infof("createPipes: Received error opening result pipe: %s\n", err)
return err
}
invokeReqPipe, err := os.OpenFile(p.reqPath, os.O_RDONLY, 0)
if err != nil {
return err
}
p.reqPipe = invokeReqPipe
invokeResPipe, err := os.OpenFile(p.resPath, os.O_WRONLY, 0)
if err != nil {
return err
}
p.resPipe = invokeResPipe
return nil
}
func (p *unixPipes) shutdown() {
if p.reqPipe != nil {
contract.IgnoreClose(p.reqPipe)
contract.IgnoreError(os.Remove(p.reqPath))
}
if p.resPipe != nil {
contract.IgnoreClose(p.resPipe)
contract.IgnoreError(os.Remove(p.resPath))
}
contract.IgnoreError(os.Remove(p.dir))
}