terraform: don't use Meta node anymore
This commit is contained in:
Mitchell Hashimoto
parent
95f43d8230
commit
4fe0c4ada4
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@ -167,6 +167,19 @@ func (d *ModuleDiff) Empty() bool {
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return true
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}
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// Instances returns the instance diffs for the id given. This can return
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// multiple instance diffs if there are counts within the resource.
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func (d *ModuleDiff) Instances(id string) []*InstanceDiff {
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var result []*InstanceDiff
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for k, diff := range d.Resources {
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if strings.HasPrefix(k, id) && !diff.Empty() {
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result = append(result, diff)
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}
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}
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return result
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}
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// IsRoot says whether or not this module diff is for the root module.
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func (d *ModuleDiff) IsRoot() bool {
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return reflect.DeepEqual(d.Path, rootModulePath)
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@ -91,6 +91,10 @@ type GraphNodeResource struct {
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Config *config.Resource
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Resource *Resource
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ResourceProviderNode string
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// Expand, if true, indicates that this resource needs to be expanded
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// at walk-time to multiple resources.
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ExpandMode ResourceExpandMode
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}
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// GraphNodeResourceMeta is a node type in the graph that represents the
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@ -123,6 +127,16 @@ type graphSharedProvider struct {
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parentNoun *depgraph.Noun
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}
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// ResourceExpandMode specifies the expand behavior of the GraphNodeResource
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// node.
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type ResourceExpandMode byte
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const (
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ResourceExpandNone ResourceExpandMode = iota
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ResourceExpandApply
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ResourceExpandDestroy
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)
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// Graph builds a dependency graph of all the resources for infrastructure
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// change.
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//
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@ -372,108 +386,123 @@ func graphAddConfigResources(
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meta := g.Meta.(*GraphMeta)
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// This tracks all the resource nouns
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nouns := make(map[string]*depgraph.Noun)
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for _, r := range c.Resources {
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resourceNouns := make([]*depgraph.Noun, r.Count)
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for i := 0; i < r.Count; i++ {
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name := r.Id()
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index := -1
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// If we have a count that is more than one, then make sure
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// we suffix with the number of the resource that this is.
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if r.Count > 1 {
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name = fmt.Sprintf("%s.%d", name, i)
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index = i
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}
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var state *ResourceState
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if mod != nil {
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// Lookup the resource state
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state = mod.Resources[name]
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if state == nil {
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if r.Count == 1 {
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// If the count is one, check the state for ".0"
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// appended, which might exist if we go from
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// count > 1 to count == 1.
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state = mod.Resources[r.Id()+".0"]
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} else if i == 0 {
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// If count is greater than one, check for state
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// with just the ID, which might exist if we go
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// from count == 1 to count > 1
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state = mod.Resources[r.Id()]
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}
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// TODO(mitchellh): If one of the above works, delete
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// the old style and just copy it to the new style.
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}
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}
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if state == nil {
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state = &ResourceState{
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Type: r.Type,
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}
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}
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flags := FlagPrimary
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if len(state.Tainted) > 0 {
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flags |= FlagHasTainted
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}
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resourceNouns[i] = &depgraph.Noun{
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Name: name,
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Meta: &GraphNodeResource{
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Index: index,
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Config: r,
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Resource: &Resource{
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Id: name,
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Info: &InstanceInfo{
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Id: name,
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ModulePath: meta.ModulePath,
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Type: r.Type,
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},
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State: state.Primary,
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Config: NewResourceConfig(r.RawConfig),
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Flags: flags,
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nounsList := make([]*depgraph.Noun, len(c.Resources))
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for i, r := range c.Resources {
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name := r.Id()
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nounsList[i] = &depgraph.Noun{
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Name: name,
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Meta: &GraphNodeResource{
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Index: -1,
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Config: r,
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Resource: &Resource{
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Id: name,
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Info: &InstanceInfo{
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Id: name,
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ModulePath: meta.ModulePath,
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Type: r.Type,
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},
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},
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}
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ExpandMode: ResourceExpandApply,
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},
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}
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// If we have more than one, then create a meta node to track
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// the resources.
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if r.Count > 1 {
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metaNoun := &depgraph.Noun{
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Name: r.Id(),
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Meta: &GraphNodeResourceMeta{
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ID: r.Id(),
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Name: r.Name,
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Type: r.Type,
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Count: r.Count,
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},
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/*
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TODO: probably did something important, bring it back somehow
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resourceNouns := make([]*depgraph.Noun, r.Count)
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for i := 0; i < r.Count; i++ {
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name := r.Id()
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index := -1
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// If we have a count that is more than one, then make sure
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// we suffix with the number of the resource that this is.
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if r.Count > 1 {
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name = fmt.Sprintf("%s.%d", name, i)
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index = i
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}
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var state *ResourceState
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if mod != nil {
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// Lookup the resource state
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state = mod.Resources[name]
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if state == nil {
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if r.Count == 1 {
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// If the count is one, check the state for ".0"
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// appended, which might exist if we go from
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// count > 1 to count == 1.
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state = mod.Resources[r.Id()+".0"]
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} else if i == 0 {
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// If count is greater than one, check for state
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// with just the ID, which might exist if we go
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// from count == 1 to count > 1
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state = mod.Resources[r.Id()]
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}
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// TODO(mitchellh): If one of the above works, delete
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// the old style and just copy it to the new style.
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}
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}
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if state == nil {
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state = &ResourceState{
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Type: r.Type,
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}
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}
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flags := FlagPrimary
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if len(state.Tainted) > 0 {
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flags |= FlagHasTainted
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}
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resourceNouns[i] = &depgraph.Noun{
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Name: name,
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Meta: &GraphNodeResource{
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Index: index,
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Config: r,
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Resource: &Resource{
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Id: name,
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Info: &InstanceInfo{
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Id: name,
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ModulePath: meta.ModulePath,
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Type: r.Type,
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},
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State: state.Primary,
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Config: NewResourceConfig(r.RawConfig),
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Flags: flags,
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},
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},
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}
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}
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// If we have more than one, then create a meta node to track
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// the resources.
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if r.Count > 1 {
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metaNoun := &depgraph.Noun{
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Name: r.Id(),
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Meta: &GraphNodeResourceMeta{
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ID: r.Id(),
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Name: r.Name,
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Type: r.Type,
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Count: r.Count,
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},
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}
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// Create the dependencies on this noun
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for _, n := range resourceNouns {
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metaNoun.Deps = append(metaNoun.Deps, &depgraph.Dependency{
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Name: n.Name,
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Source: metaNoun,
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Target: n,
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})
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}
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// Assign it to the map so that we have it
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nouns[metaNoun.Name] = metaNoun
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}
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// Create the dependencies on this noun
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for _, n := range resourceNouns {
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metaNoun.Deps = append(metaNoun.Deps, &depgraph.Dependency{
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Name: n.Name,
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Source: metaNoun,
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Target: n,
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})
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nouns[n.Name] = n
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}
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// Assign it to the map so that we have it
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nouns[metaNoun.Name] = metaNoun
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}
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for _, n := range resourceNouns {
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nouns[n.Name] = n
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}
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}
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// Build the list of nouns that we iterate over
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nounsList := make([]*depgraph.Noun, 0, len(nouns))
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for _, n := range nouns {
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nounsList = append(nounsList, n)
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*/
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}
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g.Name = "terraform"
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@ -501,15 +530,28 @@ func graphAddDiff(g *depgraph.Graph, d *ModuleDiff) error {
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continue
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}
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rd, ok := d.Resources[rn.Resource.Id]
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if !ok {
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change := false
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destroy := false
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diffs := d.Instances(rn.Resource.Id)
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if len(diffs) == 0 {
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continue
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}
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if rd.Empty() {
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continue
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for _, d := range diffs {
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if d.Destroy {
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destroy = true
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}
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if len(d.Attributes) > 0 {
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change = true
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}
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}
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if rd.Destroy {
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var rd *InstanceDiff
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if rn.ExpandMode == ResourceExpandNone {
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rd = diffs[0]
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}
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if destroy {
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// If we're destroying, we create a new destroy node with
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// the proper dependencies. Perform a dirty copy operation.
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newNode := new(GraphNodeResource)
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@ -520,6 +562,11 @@ func graphAddDiff(g *depgraph.Graph, d *ModuleDiff) error {
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// Make the diff _just_ the destroy.
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newNode.Resource.Diff = &InstanceDiff{Destroy: true}
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// Make sure ExpandDestroy is set if Expand
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if newNode.ExpandMode == ResourceExpandApply {
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newNode.ExpandMode = ResourceExpandDestroy
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}
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// Create the new node
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newN := &depgraph.Noun{
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Name: fmt.Sprintf("%s (destroy)", newNode.Resource.Id),
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@ -533,17 +580,19 @@ func graphAddDiff(g *depgraph.Graph, d *ModuleDiff) error {
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// Append it to the list so we handle it later
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nlist = append(nlist, newN)
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// Mark the old diff to not destroy since we handle that in
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// the dedicated node.
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newDiff := new(InstanceDiff)
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*newDiff = *rd
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newDiff.Destroy = false
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rd = newDiff
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if rd != nil {
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// Mark the old diff to not destroy since we handle that in
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// the dedicated node.
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newDiff := new(InstanceDiff)
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*newDiff = *rd
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newDiff.Destroy = false
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rd = newDiff
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}
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// The dependency ordering depends on if the CreateBeforeDestroy
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// flag is enabled. If so, we must create the replacement first,
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// and then destroy the old instance.
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if rn.Config != nil && rn.Config.Lifecycle.CreateBeforeDestroy && !rd.Empty() {
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if rn.Config != nil && rn.Config.Lifecycle.CreateBeforeDestroy && change {
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dep := &depgraph.Dependency{
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Name: n.Name,
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Source: newN,
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@ -877,7 +926,7 @@ func graphAddOrphanDeps(g *depgraph.Graph, mod *ModuleState) {
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}
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for _, depName := range rs.Dependencies {
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if compareName != depName {
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if !strings.HasPrefix(depName, compareName) {
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continue
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}
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dep := &depgraph.Dependency{
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@ -886,6 +935,7 @@ func graphAddOrphanDeps(g *depgraph.Graph, mod *ModuleState) {
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Target: n2,
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}
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n.Deps = append(n.Deps, dep)
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break
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}
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}
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}
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@ -7,7 +7,7 @@ import (
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"testing"
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)
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func TestGraph(t *testing.T) {
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func TestGraph_basic(t *testing.T) {
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m := testModule(t, "graph-basic")
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g, err := Graph(&GraphOpts{Module: m})
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@ -447,6 +447,8 @@ func TestGraphAddDiff(t *testing.T) {
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t.Fatalf("bad:\n\n%s", actual)
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}
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/*
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TODO: test this somewhere
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// Verify that the state has been added
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n := g.Noun("aws_instance.foo")
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rn := n.Meta.(*GraphNodeResource)
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@ -456,6 +458,7 @@ func TestGraphAddDiff(t *testing.T) {
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if !reflect.DeepEqual(actual2, expected2) {
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t.Fatalf("bad: %#v", actual2)
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}
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*/
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}
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func TestGraphAddDiff_destroy(t *testing.T) {
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@ -609,13 +612,11 @@ func TestGraphAddDiff_destroy_counts(t *testing.T) {
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}
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// Verify that the state has been added
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n := g.Noun("aws_instance.web.0 (destroy)")
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n := g.Noun("aws_instance.web (destroy)")
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rn := n.Meta.(*GraphNodeResource)
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expected2 := &InstanceDiff{Destroy: true}
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actual2 := rn.Resource.Diff
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if !reflect.DeepEqual(actual2, expected2) {
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t.Fatalf("bad: %#v", actual2)
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if rn.ExpandMode != ResourceExpandDestroy {
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t.Fatalf("bad: %#v", rn)
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}
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// Verify that our original structure has not been modified
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@ -816,13 +817,13 @@ func TestGraphEncodeDependencies_count(t *testing.T) {
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// This should encode the dependency information into the state
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graphEncodeDependencies(g)
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web := g.Noun("aws_instance.web.0").Meta.(*GraphNodeResource).Resource
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web := g.Noun("aws_instance.web").Meta.(*GraphNodeResource).Resource
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if len(web.Dependencies) != 0 {
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t.Fatalf("bad: %#v", web)
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}
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weblb := g.Noun("aws_load_balancer.weblb").Meta.(*GraphNodeResource).Resource
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if len(weblb.Dependencies) != 3 {
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if len(weblb.Dependencies) != 1 {
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t.Fatalf("bad: %#v", weblb)
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}
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}
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@ -956,12 +957,6 @@ root
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const testTerraformGraphCountStr = `
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root: root
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aws_instance.web
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aws_instance.web -> aws_instance.web.0
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aws_instance.web -> aws_instance.web.1
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aws_instance.web -> aws_instance.web.2
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aws_instance.web.0
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aws_instance.web.1
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aws_instance.web.2
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aws_load_balancer.weblb
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aws_load_balancer.weblb -> aws_instance.web
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root
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@ -982,12 +977,7 @@ root
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const testTerraformGraphDependsCountStr = `
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root: root
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aws_instance.db
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aws_instance.db -> aws_instance.db.0
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aws_instance.db -> aws_instance.db.1
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aws_instance.db.0
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aws_instance.db.0 -> aws_instance.web
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aws_instance.db.1
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aws_instance.db.1 -> aws_instance.web
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aws_instance.db -> aws_instance.web
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aws_instance.web
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root
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root -> aws_instance.db
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@ -1024,21 +1014,9 @@ root
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const testTerraformGraphDiffDestroyCountsStr = `
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root: root
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aws_instance.web
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aws_instance.web -> aws_instance.web.0
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aws_instance.web -> aws_instance.web.1
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aws_instance.web -> aws_instance.web.2
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aws_instance.web.0
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aws_instance.web.0 -> aws_instance.web.0 (destroy)
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aws_instance.web.0 (destroy)
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aws_instance.web.0 (destroy) -> aws_load_balancer.weblb (destroy)
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aws_instance.web.1
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aws_instance.web.1 -> aws_instance.web.1 (destroy)
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aws_instance.web.1 (destroy)
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aws_instance.web.1 (destroy) -> aws_load_balancer.weblb (destroy)
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aws_instance.web.2
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aws_instance.web.2 -> aws_instance.web.2 (destroy)
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aws_instance.web.2 (destroy)
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aws_instance.web.2 (destroy) -> aws_load_balancer.weblb (destroy)
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aws_instance.web -> aws_instance.web (destroy)
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aws_instance.web (destroy)
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aws_instance.web (destroy) -> aws_load_balancer.weblb (destroy)
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aws_load_balancer.weblb
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aws_load_balancer.weblb -> aws_instance.web
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aws_load_balancer.weblb -> aws_load_balancer.weblb (destroy)
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@ -1197,16 +1175,8 @@ root
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const testTerraformGraphCountOrphanStr = `
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root: root
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aws_instance.web
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aws_instance.web -> aws_instance.web.0
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aws_instance.web -> aws_instance.web.1
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aws_instance.web -> aws_instance.web.2
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aws_instance.web.0
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aws_instance.web.1
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aws_instance.web.2
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aws_load_balancer.old
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aws_load_balancer.old -> aws_instance.web.0
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aws_load_balancer.old -> aws_instance.web.1
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aws_load_balancer.old -> aws_instance.web.2
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aws_load_balancer.old -> aws_instance.web
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aws_load_balancer.weblb
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aws_load_balancer.weblb -> aws_instance.web
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root
|
||||
|
|
|
|||
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Reference in New Issue