19 Commits (cb5ce1d35ea016f7ea38aa0b9fc84fa85ed0bd19)

Author	SHA1	Message	Date
James Bardin	6cb4e14cf8	Use pooled http client for fetching providers ... While the TLS handshakes are a fairly small overhead compared to downloading the providers, clients in some situation are failing to complete the TLS handshake in a timely manner. It's unclear if this is because of heavily constrained clients are stalling while doing the major crpto operations, or the edge servers are throttling repeated requests from the same IPs. This should allow reusing the open TLS connection to the release edge servers during init.	9 years ago
Martin Atkins	879899d434	plugin/discovery: plugin caching mechanism ... For users that have metered or slow internet connections it is annoying to have Terraform constantly re-downloading the same files when they initialize many separate directories. To help such users, here we add an opt-in mechanism to use a local directory as a read-through cache. When enabled, any plugin download will be skipped if a suitable file already exists in the cache directory. If the desired plugin isn't in the cache, it will be downloaded into the cache for use next time. This mechanism also serves to reduce total disk usage by allowing plugin files to be shared between many configurations, as long as the target system isn't Windows and supports either hardlinks or symlinks.	9 years ago
Radek Simko	28b33c9299	plugin: Display version + source when initializing plugins	9 years ago
James Bardin	2b84e786e9	allow missing x-terraform-protocol-version ... If the release site is missing the "x-terraform-protocol-version" header, we should fetch the latest spec'ed release. Downloading the wrong protocol version can't do any damage, and the version present is more than likely compatible.	9 years ago
Martin Atkins	610fcb605e	plugin/discovery: allow customizing the OS/arch for auto-install ... Previously we forced only installing for the current GOOS and GOARCH. Now we allow this to be optionally overridden, which allows building tools that can, for example, populate a directory with plugins to run on a Linux server while working on a Mac.	9 years ago
James Bardin	2cca6f10fa	return sig error when fetching a plugin ... A signature error was being ignored while fetching a plugin	9 years ago
James Bardin	c10f5caf05	Merge pull request #15345 from hashicorp/jbardin/plugin-sig ... verify automatically downloaded plugins	9 years ago
Martin Atkins	af2111f24e	plugin/discovery: sentinel error values for Get errors ... Some errors from Get are essentially user error, so we want to be able to recognize them and give the user good feedback on how to proceed. Although sentinel values are not an ideal solution to this, it's something reasonably simple we can do to get this done without lots of refactoring.	9 years ago
James Bardin	415d562d36	add signature verification ... Fetch the SHA256SUMS file and verify it's signature before downloading any plugins. This embeds the hashicorp public key in the binary. If the publickey is replaced, new releases will need to be cut anyway. A --verify-plugin=false flag will be added to skip signature verification in these cases.	9 years ago
Martin Atkins	af4c82d151	plugin/discovery: Installer.PurgeUnused method ... Given a map describing the chosen plugin for each provider name, this method should purge any other plugins present in the local cache directory.	9 years ago
Martin Atkins	f753974bb3	plugin/discovery: Installer interface, and provider implementation ... Previously we had a "getProvider" function type used to implement plugin fetching. Here we replace that with an interface type, initially with just a "Get" function. For now this just simplifies the interface by allowing the target directory and protocol version to be members of the struct rather than passed as arguments. A later change will extend this interface to also include a method to purge unused plugins, so that upgrading frequently doesn't leave behind a trail of unused executable files.	9 years ago
James Bardin	1b201e67ea	fix releases path and protocol header ... Last minute change to the location of the binaries	9 years ago
James Bardin	dbbafbd43f	clean up plugin fetching ... We can filter the allowed versions and sort them before checking the protocol version, that way we can just return the first one found reducing network requests.	9 years ago
James Bardin	5f053a2e64	refactor GetProvider ... Get provider needs to be provided with the plugin protocol version, because it can't be imported here directly. The plugin url types and methods were confusing; replace them with a few functions to format the urls.	9 years ago
James Bardin	8ad67991a5	check protocol version on plugins ... Verify that the plugin we're requesting has a compatible protocol version.	9 years ago
James Bardin	044ad5ef59	rename some Constraints methods per code review	9 years ago
James Bardin	46190590cb	change []*Version to []Version ... Versions are used as values, so don't keep them as pointers here	9 years ago
James Bardin	a547e7c2f0	add releases version listing test	9 years ago
James Bardin	2749946f5c	basic plugin getter ... Add discovery.GetProviders to fetch plugins from the relases site. This is an early version, with no tests, that only (probably) fetches plugins from the default location. The URLs are still subject to change, and since there are no plugin releases, it doesn't work at all yet.	9 years ago