Commit Graph

88 Commits

Author SHA1 Message Date
James Bardin 4f691c5988 don't replace null strings with empty strings
This adds unexpected values in some cases, and since the case this
handles is only within set objects, we'll deal woth this when tackling
the sets themselves.
2019-01-17 19:19:13 -05:00
James Bardin 2cc651124e don't overwrite values in plan
Plan can change known values too, which we can't match in sets. We'll
find another way to normalize these eithout losing plan values.
2019-01-17 18:51:18 -05:00
James Bardin 7d05dee08d refactor ApplyResourceChange
Remove a bunch of indentation by returning early, and make sure we don't
fail on non-fatal error without saving the applied value.
2019-01-15 12:35:58 -05:00
James Bardin 0a731167db add a round trip through the shims during apply
Cycle through the shim operations after Apply, to ensure that we can
converge on a stable value for for Plan. While the shims produce valid
values in both directions, helper/schema sometimes does not agree on
which containers should be empty or null.
2019-01-15 11:59:15 -05:00
James Bardin e8096e9c8b normalize values during ReadResource
Match the normalization behavior of Apply, so we don't end up causing
any diffs between zero values when refreshing resources.
2019-01-12 10:41:04 -05:00
James Bardin b55ec74c27 add copyMissingValues for normalizing shimmed Vals
Zero values and empty containers can be lost during the shimming
process, and during the provider's Apply step.

If we have known zero value containers and primitives in the source,
which appear as null values in the destination, we copy over the zero
value. Sets (and lists to an extent) are more difficult, since there
before and after indexes may not correlate. In that case we take the
entire container if it's wholly known, expecting the provider to have
correctly handled the value.
2019-01-08 16:26:22 -05:00
James Bardin 8300d65539 don't strip sets with count 1 when normalizing
normalizeFlatmapContainers should retain sets with a count of 1, and
convert sets with a count of 0 if they were 1 before the Apply step.
2019-01-08 16:26:21 -05:00
James Bardin 924b97238f Handle StateFuncs in provider shim
Any state modifying functions can only be run once during the plan-apply
cycle. When regenerating the Diff during ApplyResourceChange, strip out
all StateFunc and CustomizeDiff functions from the schema.

Thew NewExtra diff field was where config data that was modified by a
StateFunc was stored, and needs to be maintained between plan and apply.

During PlanResourceChange, store any NewExtra data from the Diff in the
PlannedPrivate data, and re-insert the NewExtra data into the Diff
generated during ApplyResourceChange.
2018-12-03 18:12:02 -05:00
James Bardin 5f9b189fcf catch conversion errors in PrepareProviderConfig
Errors were being ignore with the intention that they would be caught
later in validation, but it turns out we nee dto catch those earlier.

The legacy schemas also allowed providers to set and empty string for a
bool value, which we need to handle here, since it's not being handled
from user input like a normal config value.
2018-11-30 14:51:52 -05:00
James Bardin 6f4d86094f preserve possible zero values when normalizing
When normalizing flatmapped containers, compare the attributes to the
prior state and preserve pre-existing zero-length or unknown values. A
zero-length value that was previously unknown is preserved as a
zero-length value, as that may have been computed as such by the
provider.
2018-11-27 08:54:15 -05:00
James Bardin f375691819 add missing key-value from test 2018-11-19 18:58:29 -05:00
Martin Atkins 4fe9632f09 plugin: Establish our current plugin protocol as version 5
The main significant change here is that the package name for the proto
definition is "tfplugin5", which is important because this name is part
of the wire protocol for references to types defined in our package.

Along with that, we also move the generated package into "internal" to
make it explicit that importing the generated Go package from elsewhere is
not the right approach for externally-implemented SDKs, which should
instead vendor the proto definition they are using and generate their
own stubs to ensure that the wire protocol is the only hard dependency
between Terraform Core and plugins.

After this is merged, any provider binaries built against our
helper/schema package will need to be rebuilt so that they use the new
"tfplugin5" package name instead of "proto".

In a future commit we will include more elaborate and organized
documentation on how an external codebase might make use of our RPC
interface definition to implement an SDK, but the primary concern here
is to ensure we have the right wire package name before release.
2018-11-19 09:56:41 -08:00
James Bardin e95f2b586e another test case in helper/plugin 2018-11-16 15:12:16 -05:00
James Bardin 89b2c6f21e comment fixes 2018-11-16 11:24:14 -05:00
James Bardin 17ecda53b5 strip empty containers from flatmap attributes
In order to prevent mismatched states between read/plan/apply, we need
to ensure that the attributes are generated consistently each time.
Because of the various ways in which helper/schema and the hcl2 shims
interpret empty values, the only way to ensure consistency is to always
remove them altogether.
2018-11-16 09:59:03 -05:00
James Bardin 34766ca666 use the new InstanceState shim 2018-11-16 09:59:03 -05:00
James Bardin b872491baa incremental progress towards applying diffs 2018-11-16 09:58:42 -05:00
James Bardin 718a3c400a fix state variable name 2018-10-31 13:43:50 -04:00
James Bardin e0ea2a5d06 if there is no plan diff, prefer the prior state
The prior state may contain customizations made by the provider. If
there is no prior state, then take the proposed state.
2018-10-30 15:58:00 -04:00
James Bardin e38a5a769d copy timouts into plan and apply state
helper/schema will remove "timeouts" from the config, and stash them in
the diff.Meta map. Terraform sees "timeouts" as a regular config block,
so needs them to be present in the state in order to not show a diff.

Have the GRPCProviderServer shim copy all timeout values into any state
it returns to provide consistent diffs in core.
2018-10-30 13:14:08 -04:00
James Bardin 6dad121e70 insert resource timeouts into the config schema
Resource timeouts were a separate config block, but did not exist in the
resource schema. Insert any defined timeouts when generating the
configshema.Block so that the fields can be accepted and validated by
core.
2018-10-30 13:14:08 -04:00
James Bardin a8f75bc554 don't set defaults for deprecated or removed
These may still have defaults set, even if they are not intended to be
used.
2018-10-18 12:45:55 -04:00
James Bardin e077c9ce95 Insert default values into provider config
Add any top-level default attributes from the provider schema into Null
config values.
2018-10-18 11:40:47 -04:00
James Bardin a3ac49b3fb GRPCProviderServer and PrepareProviderconfig
Update the server side of the plugin to match the new method signature.
2018-10-18 08:48:55 -04:00
James Bardin 38163f2b37 use SimpleDiff and set "id" as RequiresReplace
Use the new SimpleDiff method of the provider so that the diff isn't
altered by ForceNew attributes.

Always set an "id" as RequiresReplace so core knows an instance will be
replaced, even if all ForceNew attributes are filtered out due to
ignore_changes.
2018-10-16 19:14:54 -07:00
James Bardin f8b1a3c7a4 make sure apply can properly destroy
We need to ensure that a destroyed value is returned as such from apply
2018-10-16 19:14:11 -07:00
James Bardin 52c0032aed update provisioners for multiple processes
The "internal" provisioners are still run in a separate process, and
need to be updated to restart on each walk.
2018-10-16 19:14:11 -07:00
James Bardin caf74a218d initialize empty diff in apply
While the schema Diff fucntion returns a nil diff when creating an empty
(except for id) resource, the Apply function expects the diff to be
initialized and ampty.
2018-10-16 19:14:11 -07:00
James Bardin 0b8c38207a a plan with no diff should return proposed state
PlanResourceChange isn't returning the diff, but rather it is returning
the destired state. If the propsed state results in a nil diff, then,
the propsed state is what should be returned.

Make sure Meta fields are not nil, as the schema package expects those
to be initialised.
2018-10-16 19:14:11 -07:00
Radek Simko d93b462e9c helper/plugin: don't panic in ReadDataSource State 2018-10-16 19:14:11 -07:00
Radek Simko 2de0903538 Fix data source bug 2018-10-16 19:14:11 -07:00
Martin Atkins 97da905c6e helper/plugin: ReadResource to deal with missing remote object 2018-10-16 19:14:11 -07:00
Martin Atkins a7342de274 core: Properly handle no-op changes in plan
Previously we just left these out of the plan altogether, but in the new
plan types we intentionally include change information for every resource
instance, even if no changes are actually planned, to allow alternative
plan file viewers to show what isn't changing as well as what is.
2018-10-16 19:14:11 -07:00
Martin Atkins c27f900d92 helper/plugin: Don't panic while preparing response in ApplyResourceChange 2018-10-16 19:14:11 -07:00
Martin Atkins 686018ae12 helper/plugin: don't panic in PlanResourceChange PlannedState 2018-10-16 19:14:11 -07:00
James Bardin c07ce1cd4b move conversion functions into separate package
Managing which function need to be shared between the terraform plugin
and the helper plugin without creating cycles was becoming difficult.
Move all functions related to converting between terraform and proto
type into plugin/convert.
2018-10-16 19:11:09 -07:00
James Bardin 7188d5cbfe add grpc shims to helper/plugin
Add shim functions to automatically wrap plugins in the new GRPC
implementations.
2018-10-16 18:58:49 -07:00
James Bardin 63dcdbe948 helper/plugin package for grpc servers
The new helper/plugin package contains the grpc servers for handling the
new plugin protocol

The GRPCProviderServer and GRPCProvisionerServer handle the grpc plugin
protocol, and convert the requests to the legacy schema.Provider and
schema.Provisioner methods.
2018-10-16 18:58:49 -07:00