d7048cb640
A couple of bugs have been discovered in ResourceDiff.ForceNew: * NewRemoved is not preserved when a diff for a key is already present. This is because the second diff that happens after customization performs a second getChange on not just state and config, but also on the pre-existing diff. This results in Exists == true, meaning nil is never returned as a new value. * ForceNew was doing the work of adding the key to the list of changed keys by doing a full SetNew on the existing value. This has a side effect of fetching zero values from what were otherwise undefined values and creating diffs for these values where there should not have been (example: "" => "0"). This update fixes these scenarios by: * Adding a new private function to check the existing diff for NewRemoved keys. This is included in the check on new values in diffChange. * Keys that have been flagged as ForceNew (or parent keys of lists and sets that have been flagged as ForceNew) are now maintained in a separate map. UpdatedKeys now returns the results of both of these maps, but otherwise these keys are ignored by ResourceDiff. * Pursuant the above, values are no longer pushed into the newDiff writer by ForceNew. This prevents the zero value problem, and makes for a cleaner implementation where the provider has to "manually" SetNew to update the appropriate values in the writer. It also prevents non-computed keys from winding up in the diff, which ResourceDiff normally blocks by design. There are also a couple of tests for cases that should never come up right now involving Optional/Computed values and NewRemoved, for which explanations are given in annotations of each test. These are here to guard against future regressions. |
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| .. | ||
| acctest | ||
| config | ||
| copy | ||
| customdiff | ||
| didyoumean | ||
| diff | ||
| encryption | ||
| experiment | ||
| hashcode | ||
| hilmapstructure | ||
| logging | ||
| mutexkv | ||
| pathorcontents | ||
| resource | ||
| schema | ||
| shadow | ||
| signalwrapper | ||
| slowmessage | ||
| structure | ||
| validation | ||
| variables | ||
| wrappedreadline | ||
| wrappedstreams | ||
| README.md | ||
README.md
Helper Libraries
This folder contains helper libraries for Terraform plugins. A running joke is that this is "Terraform standard library" for plugins. The goal of the packages in this directory are to provide high-level helpers to make it easier to implement the various aspects of writing a plugin for Terraform.