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a8c58b081c
Previously the behavior for -target when given a module address was to target only resources directly within that module, ignoring any resources defined in child modules. This behavior turned out to be counter-intuitive, since users expected the -target address to be interpreted hierarchically. We'll now use the new "Contains" function for addresses, which provides a hierarchical "containment" concept that is more consistent with user expectations. In particular, it allows module.foo to match module.foo.module.bar.aws_instance.baz, where before that would not have been true. Since Contains isn't commutative (unlike Equals) this requires some special handling for targeting specific indices. When given an argument like -target=aws_instance.foo[0], the initial graph construction (for both plan and refresh) is for the resource nodes from configuration, which have not yet been expanded to separate indexed instances. Thus we need to do the first pass of TargetsTransformer in mode where indices are ignored, with the work then completed by the DynamicExpand method which re-applies the TargetsTransformer in index-sensitive mode. This is a breaking change for anyone depending on the previous behavior of -target, since it will now select more resources than before. There is no way provided to obtain the previous behavior. Eventually we may support negative targeting, which could then combine with positive targets to regain the previous behavior as an explicit choice. |
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