24 Commits (f-providerinst-command-tests)

Author	SHA1	Message	Date
Martin Atkins	abb486d8e5	internal/getproviders: Implement MultiSource ... We previously had only a stub implementation for a totally-empty MultiSource. Here we have an initial implementation of the full functionality, which we'll need to support "terraform init -plugin-dir=..." in a subsequent commit.	6 years ago
Martin Atkins	bc0f85e85e	internal/getproviders: MockSource and mock package metadata ... These are some helpers to support unit testing in other packages, allowing callers to exercise provider installation mechanisms without hitting any real upstream source or having to prepare local package directories. MockSource is a Source implementation that just scans over a provided static list of packages and returns whatever matches. FakePackageMeta is a shorthand for concisely constructing a realistic-looking but uninstallable PackageMeta, probably for use with MockSource. FakeInstallablePackageMeta is similar to FakePackageMeta but also goes to the trouble of creating a real temporary archive on local disk so that the resulting package meta is pointing to something real on disk. This makes the result more useful to the caller, but in return they get the responsibility to clean up the temporary file once the test is over. Nothing is using these yet.	6 years ago
Martin Atkins	4061cbed38	internal/getproviders: A new shared model for provider requirements ... We've been using the models from the "moduledeps" package to represent our provider dependencies everywhere since the idea of provider dependencies was introduced in Terraform 0.10, but that model is not convenient to use for any use-case other than the "terraform providers" command that needs individual-module-level detail. To make things easier for new codepaths working with the new-style provider installer, here we introduce a new model type getproviders.Requirements which is based on the type the new installer was already taking as its input. We have new methods in the states, configs, and earlyconfig packages to produce values of this type, and a helper to merge Requirements together so we can combine config-derived and state-derived requirements together during installation. The advantage of this new model over the moduledeps one is that all of recursive module walking is done up front and we produce a simple, flat structure that is more convenient for the main use-cases of selecting providers for installation and then finding providers in the local cache to use them for other operations. This new model is _not_ suitable for implementing "terraform providers" because it does not retain module-specific requirement details. Therefore we will likely keep using moduledeps for "terraform providers" for now, and then possibly at a later time consider specializing the moduledeps logic for only what "terraform providers" needs, because it seems to be the only use-case that needs to retain that level of detail.	6 years ago
Martin Atkins	eb25fe8b24	internal/getproviders: SearchLocalDirectory can handle symlinks ... Previously this was failing to treat symlinks to directories as unpacked layout, because our file info was only an Lstat result, not a full Stat. Now we'll resolve the symlink first, allowing us to handle a symlink to a directory. That's important because our internal/providercache behavior is to symlink from one cache to another where possible.	6 years ago
Martin Atkins	ad15459468	internal/{getproviders,providercache}: improved trace logging ... There's a lot going on in these functions that can be hard to follow from the outside, so we'll add some additional trace logging so that we can more easily understand why things are behaving the way they are.	6 years ago
Martin Atkins	754b7ebb65	command: Expose providercache package objects for use elsewhere ... These new functions allow command implementations to get hold of the providercache objects and installation source object derived from the current CLI configuration.	6 years ago
Martin Atkins	e4d7a71d91	internal/getproviders: Exit early if MultiSource has no sources ... The MultiSource isn't actually properly implemented yet, but this is a minimal implementation just for the case where there are no underlying sources at all, because we use an empty MultiSource as a placeholder when a test in the "command" package fails to explicitly populate a ProviderSource.	6 years ago
Martin Atkins	18dd0a396d	internal/providercache: First pass of the actual install process ... This is not tested yet, but it's a compilable strawman implementation of the necessary sequence of events to coordinate all of the moving parts of running a provider installation operation. This will inevitably see more iteration in later commits as we complete the surrounding parts and wire it up to be used by "terraform init". So far, it's just dead code not called by any other package.	6 years ago
Martin Atkins	03155daf98	internal/providercache: Start to stub Installer type ... The Installer type will encapsulate the logic for running an entire provider installation request: given a set of providers to install, it will determine a method to obtain each of them (or detect that they are already installed) and then take the necessary actions. So far it doesn't do anything, but this stubs out an interface by which the caller can request ongoing notifications during an installation operation.	6 years ago
Martin Atkins	514184cc9d	internal/getproviders: Functions to determine installation directories ... The existing functionality in this package deals with finding packages that are either available for installation or already installed. In order to support installation we also need to determine the location where a package should be installed. This lives in the getproviders package because that way all of the logic related to the filesystem layout for local provider directories lives together here where they can be maintained together more easily in future.	6 years ago
Martin Atkins	283b4d4cad	internal/getproviders: Make local directory search a public API ... Previously this was available by instantiating a throwaway FilesystemMirrorSource, but that's pretty counter-intuitive for callers that just want to do a one-off scan without retaining any ongoing state. Now we expose SearchLocalDirectory as an exported function, and the FilesystemMirrorSource then uses it as part of its implementation too. Callers that just want to know what's available in a directory can call SearchLocalDirectory directly.	6 years ago
Martin Atkins	43c1ec69e2	build: Use Go 1.14 ... This implies some notable changes that will have a visible impact to end-users of official Terraform releases: - Terraform is no longer compatible with MacOS 10.10 Yosemite, and requires at least 10.11 El Capitan. (Relatedly, Go 1.14 is planned to be the last release to support El Capitan, so while that remains supported for now, it's notable that Terraform 0.13 is likely to be the last major release of Terraform supporting it, with 0.14 likely to further require MacOS 10.12 Sierra.) - Terraform is no longer compatible with FreeBSD 10.x, which has reached end-of-life. Terraform now requires FreeBSD 11.2 or later. - Terraform now supports TLS 1.3 when it makes connections to remote services such as backends and module registries. Although TLS 1.3 is backward-compatible in principle, some legacy systems reportedly work incorrectly when attempting to negotiate it. (This change does not affect outgoing requests made by provider plugins, though they will see a similar change in behavior once built with Go 1.13 or later.) - Ed25519 certificates are now supported for TLS 1.2 and 1.3 connections. - On UNIX systems where "use-vc" is set in resolv.conf, TCP will now be used for DNS resolution. This is unlikely to cause issues in practice because a system set up in this way can presumably already reach its nameservers over TCP (or else other applications would misbehave), but could potentially lead to lookup failures in unusual situations where a system only runs Terraform, has historically had "use-vc" in its configuration, but yet is blocked from reaching its configured nameservers over TCP. - Some parts of Terraform now support Unicode 12.0 when working with strings. However, notably the Terraform Language itself continues to use the text segmentation tables from Unicode 9.0, which means it lacks up-to-date support for recognizing modern emoji combining forms as single characters. (We may wish to upgrade the text segmentation tables to Unicode 12.0 tables in a later commit, to restore consistency.) This also includes some changes to the contents of "vendor", and particularly to the format of vendor/modules.txt, per the changes to vendoring in the Go 1.14 toolchain. This new syntax is activated by the specification of "go 1.14" in the go.mod file. Finally, the exact format of error messages from the net/http library has changed since Go 1.12, and so a couple of our tests needed updates to their expected error messages to match that.	6 years ago
Martin Atkins	8eff19e48f	internal/getproviders: Initial implementation of FilesystemMirrorSource ... This is a basic implementation of FilesystemMirrorSource for now aimed only at the specific use-case of scanning the cache of provider plugins Terraform will keep under the ".terraform" directory, as part of our interim provider installer implementation for Terraform 0.13. The full functionality of this will grow out in later work when we implement explicit local filesystem mirrors, but for now the goal is to use this just to inspect the work done by the automatic installer once we switch it to the new provider-FQN-aware directory structure. The various FIXME comments in this are justified by the limited intended scope of this initial implementation, and they should be resolved by later work to use FilesystemMirrorSource explicitly for user-specified provider package mirrors.	6 years ago
Martin Atkins	c073db09ea	internal/getproviders: Sorting and filtering for lists of PackageMeta ... These are utility functions to ease processing of lists of PackageMeta elsewhere, once we have functionality that works with multiple packages at once. The local filesystem mirror source will be the first example of this, so these methods are motivated mainly by its needs.	6 years ago
Martin Atkins	d82a36b6f5	internal/getproviders: ParsePlatform method ... This is just to have a centralized set of logic for converting from a platform string (like "linux_amd64") to a Platform object, so we can do normalization and validation consistently.	6 years ago
Martin Atkins	3078d21c5f	internal/getproviders: Include Provider and Version in PackageMeta ... Although we tend to return these in contexts where at least one of these values is implied, being explicit means that PackageMeta values are self-contained and less reliant on such external context.	6 years ago
Martin Atkins	4d7122a0dd	internal/getproviders: LookupLegacyProvider ... This is a temporary helper so that we can potentially ship the new provider installer without making a breaking change by relying on the old default namespace lookup API on the default registry to find a proper FQN for a legacy provider provider address during installation. If it's given a non-legacy provider address then it just returns the given address verbatim, so any codepath using it will also correctly handle explicit full provider addresses. This also means it will automatically self-disable once we stop using addrs.NewLegacyProvider in the config loader, because there will therefore no longer be any legacy provider addresses in the config to resolve. (They'll be "default" provider addresses instead, assumed to be under registry.terraform.io/hashicorp/* ) It's not decided yet whether we will actually introduce the new provider in a minor release, but even if we don't this API function will likely be useful for a hypothetical automatic upgrade tool to introduce explicit full provider addresses into existing modules that currently rely on the equivalent to this lookup in the current provider installer. This is dead code for now, but my intent is that it would either be called as part of new provider installation to produce an address suitable to pass to Source.AvailableVersions, or it would be called from the aforementioned hypothetical upgrade tool. Whatever happens, these functions can be removed no later than one whole major release after the new provider installer is introduced, when everyone's had the opportunity to update their legacy unqualified addresses.	6 years ago
Martin Atkins	2aac8cf812	internal/getproviders: Distinguished packed vs. unpacked local packages ... Our local filesystem mirror mechanism will allow provider packages to be given either in packed form as an archive directly downloaded to disk or in an unpacked form where the archive is extracted. Distinguishing these two cases in the concrete Location types will allow callers to reliably select the mode chosen by the selected installation source and handle it appropriately, rather than resorting to out-of-band heuristics like checking whether the object is a directory or a file.	7 years ago
Martin Atkins	92a58ec438	internal/getproviders: Stub out the two mirror sources ... In a future commit, these implementations of Source will allow finding and retrieving provider packages via local mirrors, both in the local filesystem and over the network using an HTTP-based protocol.	7 years ago
Martin Atkins	773e38b49c	internal/getproviders: Stub of MultiSource ... This is an API stub for a component that will be added in a future commit to support considering a number of different installation sources for each provider. These will eventually be configurable in the CLI configuration, allowing users to e.g. mirror certain providers within their own infrastructure while still being able to go upstream for those that aren't mirrored, or permit locally-mirrored providers only, etc.	7 years ago
Martin Atkins	d695956061	internal/getproviders: MemoizeSource for local caching of source responses ... Some sources make network requests that are likely to be slow, so this wrapper type can cache previous responses for its lifetime in order to speed up repeated requests for the same information.	7 years ago
Martin Atkins	a77bc59c44	internal/getproviders: Package URL should always be absolute ... Registries backed by static files are likely to use relative paths to their archives for simplicity's sake, but we'll normalize them to be absolute before returning because the caller wouldn't otherwise know what to resolve the URLs relative to.	7 years ago
Martin Atkins	c8f7223adb	internal/getproviders: Source interface for generalization ... We intend to support installation both directly from origin registries and from mirrors in the local filesystem or over the network. This Source interface will serve as our abstraction over those three options, allowing calling code to treat them all the same.	7 years ago
Martin Atkins	c76260e957	internal/getproviders: Query a provider registry ... Our existing provider installer was originally built to work with releases.hashicorp.com and later retrofitted to talk to the official Terraform Registry. It also assumes a flat namespace of providers. We're starting a new one here, copying and adapting code from the old one as necessary, so that we can build out this new API while retaining all of the existing functionality and then cut over to this new implementation in a later step. Here we're creating a foundational component for the new installer, which is a mechanism to query for the available versions and download locations of a particular provider. Subsequent commits in this package will introduce other Source implementations for installing from network and filesystem mirrors.	7 years ago