mirror of https://github.com/pulumi/pulumi.git
108 lines
2.9 KiB
Go
108 lines
2.9 KiB
Go
// Copyright 2016-2020, Pulumi Corporation.
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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 policypack
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import (
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"context"
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"github.com/pkg/errors"
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"github.com/pulumi/pulumi/sdk/v2/go/common/util/contract"
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"io"
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"io/ioutil"
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"net/http"
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"os"
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"path/filepath"
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"strings"
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)
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const (
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schemeFile = "file://"
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schemeHTTPS = "https://"
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)
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func publishLocal(url string, archive io.Reader) error {
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path := url
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if err := os.MkdirAll(filepath.Dir(path), 0700); err != nil {
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return errors.Wrapf(err, "MkdirAll failed for path '%s'", path)
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}
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f, err := os.OpenFile(path, os.O_TRUNC|os.O_CREATE|os.O_WRONLY, 0600)
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if err != nil {
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return errors.Wrapf(err, "Open failed for path '%s'", path)
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}
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defer contract.IgnoreClose(f)
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_, uploadErr := io.Copy(f, archive)
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return uploadErr
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}
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func publishRemote(url string, archive io.Reader) error {
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putS3Req, err := http.NewRequest(http.MethodPut, url, archive)
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if err != nil {
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return errors.Wrapf(err, "Failed to upload compressed PolicyPack")
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}
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_, uploadErr := http.DefaultClient.Do(putS3Req)
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return uploadErr
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}
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// Publish publishes the provided archive to the URI based on the scheme.
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// Currently supported schemes include https:// and file://.
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func Publish(ctx context.Context, url string, archive io.Reader) error {
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var err error
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switch {
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case strings.HasPrefix(url, schemeHTTPS):
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err = publishRemote(url, archive)
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case strings.HasPrefix(url, schemeFile), strings.HasPrefix(url, "/"):
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err = publishLocal(url, archive)
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default:
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return errors.Errorf("unknown scheme found in URL %v", url)
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}
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return err
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}
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func downloadRemoteFile(url string) ([]byte, error) {
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req, err := http.NewRequest(http.MethodGet, url, nil)
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if err != nil {
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return nil, errors.Wrapf(err, "Failed to download compressed PolicyPack")
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}
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resp, err := http.DefaultClient.Do(req)
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if err != nil {
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return nil, errors.Wrapf(err, "Failed to download compressed PolicyPack")
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}
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defer resp.Body.Close()
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tarball, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, errors.Wrapf(err, "Failed to download compressed PolicyPack")
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}
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return tarball, nil
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}
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func Download(ctx context.Context, url string) ([]byte, error) {
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var b []byte
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var err error
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switch {
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case strings.HasPrefix(url, schemeHTTPS):
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b, err = downloadRemoteFile(url)
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case strings.HasPrefix(url, schemeFile), strings.HasPrefix(url, "/"):
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b, err = ioutil.ReadFile(url)
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default:
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return nil, errors.Errorf("unknown scheme found in URL %v", url)
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}
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return b, err
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}
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