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3e5bfa7364
This is a whole lot of nothing right now, just stubbing out some control flow that ultimately just leads to TODOs that cause it to do nothing at all. My intent here is to get this cross-cutting skeleton in place and thus make it easier for us to collaborate on adding the meat to it, so that it's more likely we can work on different parts separately and still get a result that tessellates.
41 lines
1.5 KiB
Go
41 lines
1.5 KiB
Go
package refactoring
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import (
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"fmt"
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"github.com/hashicorp/terraform/internal/configs"
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"github.com/hashicorp/terraform/internal/instances"
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"github.com/hashicorp/terraform/internal/tfdiags"
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)
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// ValidateMoves tests whether all of the given move statements comply with
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// both the single-statement validation rules and the "big picture" rules
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// that constrain statements in relation to one another.
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//
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// The validation rules are primarily in terms of the configuration, but
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// ValidateMoves also takes the expander that resulted from creating a plan
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// so that it can see which instances are defined for each module and resource,
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// to precisely validate move statements involving specific-instance addresses.
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//
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// Because validation depends on the planning result but move execution must
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// happen _before_ planning, we have the unusual situation where sibling
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// function ApplyMoves must run before ValidateMoves and must therefore
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// tolerate and ignore any invalid statements. The plan walk will then
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// construct in incorrect plan (because it'll be starting from the wrong
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// prior state) but ValidateMoves will block actually showing that invalid
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// plan to the user.
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func ValidateMoves(stmts []MoveStatement, rootCfg *configs.Config, expander *instances.Expander) tfdiags.Diagnostics {
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var diags tfdiags.Diagnostics
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g := buildMoveStatementGraph(stmts)
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if len(g.Cycles()) != 0 {
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// TODO: proper error messages for this
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diags = diags.Append(fmt.Errorf("move statement cycles"))
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}
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// TODO: Various other validation rules
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return diags
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}
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