Vendor dependencies with vndr

This fixes issue #123

1 files changed, 357 insertions, 0 deletions

diff --git a/vendor/github.com/hashicorp/terraform/terraform/node_resource_apply.go b/vendor/github.com/hashicorp/terraform/terraform/node_resource_apply.go
new file mode 100644
index 00000000..3599782b
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/terraform/node_resource_apply.go
@@ -0,0 +1,357 @@
+package terraform
+
+import (
+	"fmt"
+
+	"github.com/hashicorp/terraform/config"
+)
+
+// NodeApplyableResource represents a resource that is "applyable":
+// it is ready to be applied and is represented by a diff.
+type NodeApplyableResource struct {
+	*NodeAbstractResource
+}
+
+// GraphNodeCreator
+func (n *NodeApplyableResource) CreateAddr() *ResourceAddress {
+	return n.NodeAbstractResource.Addr
+}
+
+// GraphNodeReferencer, overriding NodeAbstractResource
+func (n *NodeApplyableResource) References() []string {
+	result := n.NodeAbstractResource.References()
+
+	// The "apply" side of a resource generally also depends on the
+	// destruction of its dependencies as well. For example, if a LB
+	// references a set of VMs with ${vm.foo.*.id}, then we must wait for
+	// the destruction so we get the newly updated list of VMs.
+	//
+	// The exception here is CBD. When CBD is set, we don't do this since
+	// it would create a cycle. By not creating a cycle, we require two
+	// applies since the first apply the creation step will use the OLD
+	// values (pre-destroy) and the second step will update.
+	//
+	// This is how Terraform behaved with "legacy" graphs (TF <= 0.7.x).
+	// We mimic that behavior here now and can improve upon it in the future.
+	//
+	// This behavior is tested in graph_build_apply_test.go to test ordering.
+	cbd := n.Config != nil && n.Config.Lifecycle.CreateBeforeDestroy
+	if !cbd {
+		// The "apply" side of a resource always depends on the destruction
+		// of all its dependencies in addition to the creation.
+		for _, v := range result {
+			result = append(result, v+".destroy")
+		}
+	}
+
+	return result
+}
+
+// GraphNodeEvalable
+func (n *NodeApplyableResource) EvalTree() EvalNode {
+	addr := n.NodeAbstractResource.Addr
+
+	// stateId is the ID to put into the state
+	stateId := addr.stateId()
+
+	// Build the instance info. More of this will be populated during eval
+	info := &InstanceInfo{
+		Id:   stateId,
+		Type: addr.Type,
+	}
+
+	// Build the resource for eval
+	resource := &Resource{
+		Name:       addr.Name,
+		Type:       addr.Type,
+		CountIndex: addr.Index,
+	}
+	if resource.CountIndex < 0 {
+		resource.CountIndex = 0
+	}
+
+	// Determine the dependencies for the state.
+	stateDeps := n.StateReferences()
+
+	// Eval info is different depending on what kind of resource this is
+	switch n.Config.Mode {
+	case config.ManagedResourceMode:
+		return n.evalTreeManagedResource(
+			stateId, info, resource, stateDeps,
+		)
+	case config.DataResourceMode:
+		return n.evalTreeDataResource(
+			stateId, info, resource, stateDeps)
+	default:
+		panic(fmt.Errorf("unsupported resource mode %s", n.Config.Mode))
+	}
+}
+
+func (n *NodeApplyableResource) evalTreeDataResource(
+	stateId string, info *InstanceInfo,
+	resource *Resource, stateDeps []string) EvalNode {
+	var provider ResourceProvider
+	var config *ResourceConfig
+	var diff *InstanceDiff
+	var state *InstanceState
+
+	return &EvalSequence{
+		Nodes: []EvalNode{
+			// Build the instance info
+			&EvalInstanceInfo{
+				Info: info,
+			},
+
+			// Get the saved diff for apply
+			&EvalReadDiff{
+				Name: stateId,
+				Diff: &diff,
+			},
+
+			// Stop here if we don't actually have a diff
+			&EvalIf{
+				If: func(ctx EvalContext) (bool, error) {
+					if diff == nil {
+						return true, EvalEarlyExitError{}
+					}
+
+					if diff.GetAttributesLen() == 0 {
+						return true, EvalEarlyExitError{}
+					}
+
+					return true, nil
+				},
+				Then: EvalNoop{},
+			},
+
+			// We need to re-interpolate the config here, rather than
+			// just using the diff's values directly, because we've
+			// potentially learned more variable values during the
+			// apply pass that weren't known when the diff was produced.
+			&EvalInterpolate{
+				Config:   n.Config.RawConfig.Copy(),
+				Resource: resource,
+				Output:   &config,
+			},
+
+			&EvalGetProvider{
+				Name:   n.ProvidedBy()[0],
+				Output: &provider,
+			},
+
+			// Make a new diff with our newly-interpolated config.
+			&EvalReadDataDiff{
+				Info:     info,
+				Config:   &config,
+				Previous: &diff,
+				Provider: &provider,
+				Output:   &diff,
+			},
+
+			&EvalReadDataApply{
+				Info:     info,
+				Diff:     &diff,
+				Provider: &provider,
+				Output:   &state,
+			},
+
+			&EvalWriteState{
+				Name:         stateId,
+				ResourceType: n.Config.Type,
+				Provider:     n.Config.Provider,
+				Dependencies: stateDeps,
+				State:        &state,
+			},
+
+			// Clear the diff now that we've applied it, so
+			// later nodes won't see a diff that's now a no-op.
+			&EvalWriteDiff{
+				Name: stateId,
+				Diff: nil,
+			},
+
+			&EvalUpdateStateHook{},
+		},
+	}
+}
+
+func (n *NodeApplyableResource) evalTreeManagedResource(
+	stateId string, info *InstanceInfo,
+	resource *Resource, stateDeps []string) EvalNode {
+	// Declare a bunch of variables that are used for state during
+	// evaluation. Most of this are written to by-address below.
+	var provider ResourceProvider
+	var diff, diffApply *InstanceDiff
+	var state *InstanceState
+	var resourceConfig *ResourceConfig
+	var err error
+	var createNew bool
+	var createBeforeDestroyEnabled bool
+
+	return &EvalSequence{
+		Nodes: []EvalNode{
+			// Build the instance info
+			&EvalInstanceInfo{
+				Info: info,
+			},
+
+			// Get the saved diff for apply
+			&EvalReadDiff{
+				Name: stateId,
+				Diff: &diffApply,
+			},
+
+			// We don't want to do any destroys
+			&EvalIf{
+				If: func(ctx EvalContext) (bool, error) {
+					if diffApply == nil {
+						return true, EvalEarlyExitError{}
+					}
+
+					if diffApply.GetDestroy() && diffApply.GetAttributesLen() == 0 {
+						return true, EvalEarlyExitError{}
+					}
+
+					diffApply.SetDestroy(false)
+					return true, nil
+				},
+				Then: EvalNoop{},
+			},
+
+			&EvalIf{
+				If: func(ctx EvalContext) (bool, error) {
+					destroy := false
+					if diffApply != nil {
+						destroy = diffApply.GetDestroy() || diffApply.RequiresNew()
+					}
+
+					createBeforeDestroyEnabled =
+						n.Config.Lifecycle.CreateBeforeDestroy &&
+							destroy
+
+					return createBeforeDestroyEnabled, nil
+				},
+				Then: &EvalDeposeState{
+					Name: stateId,
+				},
+			},
+
+			&EvalInterpolate{
+				Config:   n.Config.RawConfig.Copy(),
+				Resource: resource,
+				Output:   &resourceConfig,
+			},
+			&EvalGetProvider{
+				Name:   n.ProvidedBy()[0],
+				Output: &provider,
+			},
+			&EvalReadState{
+				Name:   stateId,
+				Output: &state,
+			},
+			// Re-run validation to catch any errors we missed, e.g. type
+			// mismatches on computed values.
+			&EvalValidateResource{
+				Provider:       &provider,
+				Config:         &resourceConfig,
+				ResourceName:   n.Config.Name,
+				ResourceType:   n.Config.Type,
+				ResourceMode:   n.Config.Mode,
+				IgnoreWarnings: true,
+			},
+			&EvalDiff{
+				Info:       info,
+				Config:     &resourceConfig,
+				Resource:   n.Config,
+				Provider:   &provider,
+				Diff:       &diffApply,
+				State:      &state,
+				OutputDiff: &diffApply,
+			},
+
+			// Get the saved diff
+			&EvalReadDiff{
+				Name: stateId,
+				Diff: &diff,
+			},
+
+			// Compare the diffs
+			&EvalCompareDiff{
+				Info: info,
+				One:  &diff,
+				Two:  &diffApply,
+			},
+
+			&EvalGetProvider{
+				Name:   n.ProvidedBy()[0],
+				Output: &provider,
+			},
+			&EvalReadState{
+				Name:   stateId,
+				Output: &state,
+			},
+			// Call pre-apply hook
+			&EvalApplyPre{
+				Info:  info,
+				State: &state,
+				Diff:  &diffApply,
+			},
+			&EvalApply{
+				Info:      info,
+				State:     &state,
+				Diff:      &diffApply,
+				Provider:  &provider,
+				Output:    &state,
+				Error:     &err,
+				CreateNew: &createNew,
+			},
+			&EvalWriteState{
+				Name:         stateId,
+				ResourceType: n.Config.Type,
+				Provider:     n.Config.Provider,
+				Dependencies: stateDeps,
+				State:        &state,
+			},
+			&EvalApplyProvisioners{
+				Info:           info,
+				State:          &state,
+				Resource:       n.Config,
+				InterpResource: resource,
+				CreateNew:      &createNew,
+				Error:          &err,
+				When:           config.ProvisionerWhenCreate,
+			},
+			&EvalIf{
+				If: func(ctx EvalContext) (bool, error) {
+					return createBeforeDestroyEnabled && err != nil, nil
+				},
+				Then: &EvalUndeposeState{
+					Name:  stateId,
+					State: &state,
+				},
+				Else: &EvalWriteState{
+					Name:         stateId,
+					ResourceType: n.Config.Type,
+					Provider:     n.Config.Provider,
+					Dependencies: stateDeps,
+					State:        &state,
+				},
+			},
+
+			// We clear the diff out here so that future nodes
+			// don't see a diff that is already complete. There
+			// is no longer a diff!
+			&EvalWriteDiff{
+				Name: stateId,
+				Diff: nil,
+			},
+
+			&EvalApplyPost{
+				Info:  info,
+				State: &state,
+				Error: &err,
+			},
+			&EvalUpdateStateHook{},
+		},
+	}
+}