17 Commits (e024960c745f0a464cb081d04765d93f94deaba0)

Author	SHA1	Message	Date
James Bardin	f3fe6184a0	test for destroy plan round trip	8 years ago
Martin Atkins	300eceeb25	plans/planfile: fix TestRoundtrip ... This was broken by an earlier change to verify the Terraform version number when reading a state file. To fix it, we'll use our current version in our constructed file which should then match when it's read back in.	8 years ago
Martin Atkins	2b80df0163	backend/local: Require caller to set PlanOutBackend with PlanOutPath ... We can't generate a valid plan file without a backend configuration to write into it, but it's the responsibility of the caller (the command package) to manage the backend configuration mechanism, so we require it to tell us what to write here. This feels a little strange because the backend in principle knows its own config, but in practice the backend only knows the _processed_ version of the config, not the raw configuration value that was used to configure it.	8 years ago
Kristin Laemmert	2d3cb87789	backend/local tests tests tests ... converted the existing testPlanState() from terraform.State to states.State to fix various plan tests. reverted the "bandaid" in plans/planfile/tfplan.go - at this moment the backend tests do not include backend configuration, and so the planfile package can write the plan file but not read it back in. That will be revisted in a separate track of work.	8 years ago
Kristin Laemmert	6a37ee9277	backend/local: more tests passing ... I have no confidence in the change to plans/planfile/tfplan.go. The tests were passing an empty backend config, which planfile was able to write to a file but not read from the same file. This change let me move past that and it did not break any tests in the planfile package, but I am concerned that it introduces undesired behavior.	8 years ago
Martin Atkins	b0016e9cf6	command: Allow tests to run to completion without panics or hangs ... There are still 160 test failures as of this commit, but at least the test program can run to completion and list out all the failures.	8 years ago
Martin Atkins	896b6bc897	core: Fix test build for ./plans/planfile ... This was missed in the splitting of "Replace" into "DeleteThenCreate" and "CreateThenDelete".	8 years ago
Martin Atkins	9179cdcbc6	plans/planfile: allow resource instances with no instance key ... This happens for resources that don't have either "count" or "for_each" set.	8 years ago
Martin Atkins	a43b7df282	core: Handle forced-create_before_destroy during the plan walk ... Previously we used a single plan action "Replace" to represent both the destroy-before-create and the create-before-destroy variants of replacing. However, this forces the apply graph builder to jump through a lot of hoops to figure out which nodes need it forced on and rebuild parts of the graph to represent that. If we instead decide between these two cases at plan time, the actual determination of it is more straightforward because each resource is represented by only one node in the plan graph, and then we can ensure we put the right nodes in the graph during DiffTransformer and thus avoid the logic for dealing with deposed instances being spread across various different transformers and node types. As a nice side-effect, this also allows us to show the difference between destroy-then-create and create-then-destroy in the rendered diff in the CLI, although this change doesn't fully implement that yet.	8 years ago
Martin Atkins	d53c3d5c1b	plans: Retain output value changes for all outputs in memory ... During the plan operation we need to retain _somewhere_ the planned changes for all outputs so we can refer to them during expression evaluation. For consistency with how we handle resource instance changes, we'll keep them in the plan so we can properly retain unknown values, which cannot be written to state. As with output values in the state, only root output plans are retained in a round-trip through the on-disk plan file format, but that's okay because we can trivially re-calculate all of these during apply. We include the _root_ outputs in the plan file only because they are externally-visible side effects that ought to be included in any rendering of the plan made from the plan file for user inspection.	8 years ago
Martin Atkins	dfe0988f10	plans: Record private data bytes as part of resource change ... This allows a provider to retain arbitrary extra data in the plan and make use of it during apply. The contents are not used by Terraform and never shown to the user.	8 years ago
Martin Atkins	a3403f2766	terraform: Ugly huge change to weave in new State and Plan types ... Due to how often the state and plan types are referenced throughout Terraform, there isn't a great way to switch them out gradually. As a consequence, this huge commit gets us from the old world to a _compilable_ new world, but still has a large number of known test failures due to key functionality being stubbed out. The stubs here are for anything that interacts with providers, since we now need to do the follow-up work to similarly replace the old terraform.ResourceProvider interface with its replacement in the new "providers" package. That work, along with work to fix the remaining failing tests, will follow in subsequent commits. The aim here was to replace all references to terraform.State and its downstream types with states.State, terraform.Plan with plans.Plan, state.State with statemgr.State, and switch to the new implementations of the state and plan file formats. However, due to the number of times those types are used, this also ended up affecting numerous other parts of core such as terraform.Hook, the backend.Backend interface, and most of the CLI commands. Just as with 5861dbf3fc before, I apologize in advance to the person who inevitably just found this huge commit while spelunking through the commit history.	8 years ago
Martin Atkins	b7db32b819	plans: separate types for encoded and decoded changes ... The types here were originally written to allow us to defer decoding of object values until schemas are available, but it turns out that this was forcing us to defer decoding longer than necessary and potentially decode the same value multiple times. To avoid this, we create pairs of types to represent the encoded and decoded versions and methods for moving between them. These types are identical to one another apart from how the dynamic values are represented.	8 years ago
Martin Atkins	074db88636	plans: Include target addresses in the plan ... We shouldn't really need these because the plan is already filtered to include diffs only for targeted resources, but we currently rely on this to filter out non-resource items from the diff, and so we'll retain it for now to avoid reworking how the apply-time graph builder works.	8 years ago
Martin Atkins	d9dfd135c6	plans: Include backend settings in plan and plan files ... On the first pass here we erroneously assumed that this was redundant with the backend settings embedded in the configuration itself. In practice, users can override backend configuration when running "terraform init" and so we need to record the _effective_ backend configuration. Along with this, we also return the selected workspace name at the time the plan was created so we'll later be able to produce a specialized error for the situation of having the wrong workspace selected. This isn't strictly required because we'll also check the lineage of the state, but the error message that would result from that failure would be relatively opaque and thus less helpful to the user.	8 years ago
Martin Atkins	51aeba2cf2	plans: Record provider config address in each resource change ... This allows us to record the resource-to-provider associations we made during the plan phase and ensure that we use the same config during apply. This isn't technically necessary, since we can in principle just repeat the same matching algorithm against the config, but that algorithm is relatively complicated and so if we execute it just once during plan we remove the risk of bugs causing different decisions to be made during the apply phase. This also includes updates to the plan file format to include the provider addresses. Since we've not actually shipped any version of Terraform using our protobuf schema yet, we renumber here all of the fields after the new one to keep them incrementing consecutively. This example should not be followed after we have a released version of Terraform using this, as a courtesy to anyone trying to parse these files (even though we're not yet guaranteeing compatibility between releases).	8 years ago
Martin Atkins	a2eb462f5d	plans/planfile: Reading and writing the new plan format ... The new format is radically different in than the old in physical structure, but still has the same logical parts: the plan itself, a snapshot of the input configuration, and a snapshot of the state as it existed when the plan was created. Rather than creating plan-specific serializations of state and config, the new format instead leans on the existing file formats implemented elsewhere, wrapping the result up in a zip archive with some internal file naming conventions. The plan portion of the file is serialized with protobuf, consistent with our general strategy of replacing all use of encoding/gob with protobuf moving forward.	8 years ago