* removed packer.Cache and references since packer.Cache is never used except in the download step. The download step now uses the new func packer.CachePath(targetPath) for this, the behavior is the same. * removed download code from packer that was reimplemented into the go-getter library: progress bar, http download restart, checksuming from file, skip already downloaded files, symlinking, make a download cancellable by context. * on windows if packer is running without symlinking rights and we are getting a local file, the file will be copied instead to avoid errors. * added unit tests for step_download that are now CI tested on windows, mac & linux. * files are now downloaded under cache dir `sha1(filename + "?checksum=" + checksum) + file_extension` * since the output dir is based on the source url and the checksum, when the checksum fails, the file is auto deleted. * a download file is protected and locked by a file lock, * updated docs * updated go modules and vendors
34 lines
923 B
Go
34 lines
923 B
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package internal
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import (
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"context"
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"net/http"
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)
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// HTTPClient is the context key to use with golang.org/x/net/context's
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// WithValue function to associate an *http.Client value with a context.
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var HTTPClient ContextKey
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// ContextKey is just an empty struct. It exists so HTTPClient can be
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// an immutable public variable with a unique type. It's immutable
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// because nobody else can create a ContextKey, being unexported.
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type ContextKey struct{}
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var appengineClientHook func(context.Context) *http.Client
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func ContextClient(ctx context.Context) *http.Client {
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if ctx != nil {
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if hc, ok := ctx.Value(HTTPClient).(*http.Client); ok {
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return hc
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}
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}
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if appengineClientHook != nil {
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return appengineClientHook(ctx)
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}
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return http.DefaultClient
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}
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