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Adrien Delorme 9f82b75e57 Use the hashicorp/go-getter to download files ... * 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		7 years ago
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artifact.go	…
builder.go	Use the hashicorp/go-getter to download files	7 years ago
builder_test.go	qemu builder: add the 'use_backing_file' setting for QCOW2 images	8 years ago
driver.go	…
ssh.go	refactor all copy pasted sshConfig with into communicator.Config.SSHConfigFunc	8 years ago
step_configure_vnc.go	…
step_convert_disk.go	make the convert retryable in case it takes a bit to release a lock	8 years ago
step_copy_disk.go	qemu builder: add the 'use_backing_file' setting for QCOW2 images	8 years ago
step_create_disk.go	qemu builder: add the 'use_backing_file' setting for QCOW2 images	8 years ago
step_forward_ssh.go	…
step_prepare_output_dir.go	…
step_resize_disk.go	…
step_run.go	provide memory and cpus like other builders does	7 years ago
step_set_iso.go	move http with proxy call into a helper function	7 years ago
step_shutdown.go	…
step_type_boot_command.go	Backport VNC log from vmware to qemu	8 years ago