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f40800b3a4
This is part of a general effort to move all of Terraform's non-library package surface under internal in order to reinforce that these are for internal use within Terraform only. If you were previously importing packages under this prefix into an external codebase, you could pin to an earlier release tag as an interim solution until you've make a plan to achieve the same functionality some other way.
69 lines
2.1 KiB
Go
69 lines
2.1 KiB
Go
package states
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import (
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"reflect"
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"github.com/hashicorp/terraform/internal/addrs"
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)
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// Equal returns true if the receiver is functionally equivalent to other,
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// including any ephemeral portions of the state that would not be included
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// if the state were saved to files.
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//
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// To test only the persistent portions of two states for equality, instead
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// use statefile.StatesMarshalEqual.
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func (s *State) Equal(other *State) bool {
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// For the moment this is sufficient, but we may need to do something
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// more elaborate in future if we have any portions of state that require
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// more sophisticated comparisons.
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return reflect.DeepEqual(s, other)
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}
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// ManagedResourcesEqual returns true if all of the managed resources tracked
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// in the reciever are functionally equivalent to the same tracked in the
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// other given state.
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//
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// This is a more constrained version of Equal that disregards other
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// differences, including but not limited to changes to data resources and
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// changes to output values.
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func (s *State) ManagedResourcesEqual(other *State) bool {
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// First, some accommodations for situations where one of the objects is
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// nil, for robustness since we sometimes use a nil state to represent
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// a prior state being entirely absent.
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if s == nil && other == nil {
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return true
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}
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if s == nil {
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return !other.HasResources()
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}
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if other == nil {
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return !s.HasResources()
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}
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// If we get here then both states are non-nil.
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// sameManagedResources tests that its second argument has all the
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// resources that the first one does, so we'll call it twice with the
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// arguments inverted to ensure that we'll also catch situations where
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// the second has resources that the first does not.
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return sameManagedResources(s, other) && sameManagedResources(other, s)
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}
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func sameManagedResources(s1, s2 *State) bool {
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for _, ms := range s1.Modules {
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for _, rs := range ms.Resources {
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addr := rs.Addr
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if addr.Resource.Mode != addrs.ManagedResourceMode {
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continue
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}
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otherRS := s2.Resource(addr)
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if !reflect.DeepEqual(rs, otherRS) {
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return false
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}
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}
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}
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return true
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}
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