Commit Graph

9 Commits

Author SHA1 Message Date
James Bardin cdb80f68a8 Ensure better state normalization
Fix checksum issue with remote state

If we read a state file with "null" objects in a module and they become
initialized to an empty map the state file may be written out with empty
objects rather than "null", changing the checksum. If we can detect
this, increment the serial number to prevent a conflict in atlas.

Our fakeAtlas test server now needs to decode the state directly rather
than using the ReadState function, so as to be able to read the state
unaltered.

The terraform.State data structures have initialization spread out
throughout the package. More thoroughly initialize State during
ReadState, and add a call to init() during WriteState as another
normalization safeguard.

Expose State.init through an exported Init() method, so that a new State
can be completely realized outside of the terraform package.
Additionally, the internal init now completely walks all internal state
structures ensuring that all maps and slices are initialized.  While it
was mentioned before that the `init()` methods are problematic with too
many call sites, expanding this out better exposes the entry points that
will need to be refactored later for improved concurrency handling.

The State structures had a mix of `omitempty` fields. Remove omitempty
for all maps and slices as part of this normalization process. Make
Lineage mandatory, which is now explicitly set in some tests.
2016-08-12 11:09:50 -04:00
James Nugent d60365af02 core: Correctly ensure that State() is a copy
The previous mechanism for testing state threw away the mutation made on
the state by calling State() twice - this commit corrects the test to
match the comment.

In addition, we replace the custom copying logic with the copystructure
library to simplify the code.
2016-06-22 17:21:27 +03:00
James Nugent 3ea3c657b5 core: Use OutputState in JSON instead of map
This commit forward ports the changes made for 0.6.17, in order to store
the type and sensitive flag against outputs.

It also refactors the logic of the import for V0 to V1 state, and
fixes up the call sites of the new format for outputs in V2 state.

Finally we fix up tests which did not previously set a state version
where one is required.
2016-05-18 13:25:20 -05:00
James Nugent 6aac79e194 state: Add support for outputs of multiple types
This commit adds the groundwork for supporting module outputs of types
other than string. In order to do so, the state version is increased
from 1 to 2 (though the "public-facing" state version is actually as the
first state file was binary).

Tests are added to ensure that V2 (1) state is upgraded to V3 (2) state,
though no separate read path is required since the V2 JSON will
unmarshal correctly into the V3 structure.

Outputs in a ModuleState are now of type map[string]interface{}, and a
test covers round-tripping string, []string and map[string]string, which
should cover all of the types in question.

Type switches have been added where necessary to deal with the
interface{} value, but they currently default to panicking when the input
is not a string.
2016-05-10 14:40:12 -04:00
Mitchell Hashimoto cc8e6b6331 state: deep copies are required 2015-02-23 21:36:58 -08:00
Mitchell Hashimoto c2bf600603 state: only change serial if changed 2015-02-23 21:26:33 -08:00
Mitchell Hashimoto 3bf59183b8 state: InmemState 2015-02-23 15:13:55 -08:00
Mitchell Hashimoto 6ec1b2b455 state: cache state test 2015-02-23 15:13:53 -08:00
Mitchell Hashimoto 1f7ddc30fe state: a bunch of state stuff 2015-02-23 15:13:53 -08:00