func (t *ConfigTransformer) Transform(g *Graph) error {
// A module is required and also must be completely loaded.
if t.Module == nil {
return errors.New("module must not be nil")
}
if !t.Module.Loaded() {
return errors.New("module must be loaded")
}
// Get the module we care about
module := t.Module.Child(g.Path[1:])
if module == nil {
return nil
}
// Get the configuration for this module
config := module.Config()
// Create the node list we'll use for the graph
nodes := make([]graphNodeConfig, 0,
(len(config.Variables)+
len(config.ProviderConfigs)+
len(config.Modules)+
len(config.Resources)+
len(config.Outputs))*2)
// Write all the variables out
for _, v := range config.Variables {
nodes = append(nodes, &GraphNodeConfigVariable{Variable: v})
}
// Write all the provider configs out
for _, pc := range config.ProviderConfigs {
nodes = append(nodes, &GraphNodeConfigProvider{Provider: pc})
}
// Write all the resources out
for _, r := range config.Resources {
nodes = append(nodes, &GraphNodeConfigResource{
Resource: r,
Path: g.Path,
})
}
// Write all the modules out
children := module.Children()
for _, m := range config.Modules {
path := make([]string, len(g.Path), len(g.Path)+1)
copy(path, g.Path)
path = append(path, m.Name)
nodes = append(nodes, &GraphNodeConfigModule{
Path: path,
Module: m,
Tree: children[m.Name],
})
}
// Write all the outputs out
for _, o := range config.Outputs {
nodes = append(nodes, &GraphNodeConfigOutput{Output: o})
}
// Err is where the final error value will go if there is one
var err error
// Build the graph vertices
for _, n := range nodes {
g.Add(n)
}
// Build up the dependencies. We have to do this outside of the above
// loop since the nodes need to be in place for us to build the deps.
for _, n := range nodes {
if missing := g.ConnectDependent(n); len(missing) > 0 {
for _, m := range missing {
err = multierror.Append(err, fmt.Errorf(
"%s: missing dependency: %s", n.Name(), m))
}
}
}
return err
}
func (t *OrphanTransformer) Transform(g *Graph) error {
if t.State == nil {
// If the entire state is nil, there can't be any orphans
return nil
}
if t.Targeting {
log.Printf("Skipping orphan transformer because we have targets.")
// If we are in a run where we are targeting nodes, we won't process
// orphans for this run.
return nil
}
// Build up all our state representatives
resourceRep := make(map[string]struct{})
for _, v := range g.Vertices() {
if sr, ok := v.(GraphNodeStateRepresentative); ok {
for _, k := range sr.StateId() {
resourceRep[k] = struct{}{}
}
}
}
var config *config.Config
if t.Module != nil {
if module := t.Module.Child(g.Path[1:]); module != nil {
config = module.Config()
}
}
var resourceVertexes []dag.Vertex
if state := t.State.ModuleByPath(g.Path); state != nil {
// If we have state, then we can have orphan resources
// If we have a view, get the view
if t.View != "" {
state = state.View(t.View)
}
// Go over each resource orphan and add it to the graph.
resourceOrphans := state.Orphans(config)
resourceVertexes = make([]dag.Vertex, len(resourceOrphans))
for i, k := range resourceOrphans {
// If this orphan is represented by some other node somehow,
// then ignore it.
if _, ok := resourceRep[k]; ok {
continue
}
rs := state.Resources[k]
resourceVertexes[i] = g.Add(&graphNodeOrphanResource{
ResourceName: k,
ResourceType: rs.Type,
Provider: rs.Provider,
dependentOn: rs.Dependencies,
})
}
}
// Go over each module orphan and add it to the graph. We store the
// vertexes and states outside so that we can connect dependencies later.
moduleOrphans := t.State.ModuleOrphans(g.Path, config)
moduleVertexes := make([]dag.Vertex, len(moduleOrphans))
for i, path := range moduleOrphans {
moduleVertexes[i] = g.Add(&graphNodeOrphanModule{
Path: path,
dependentOn: t.State.ModuleByPath(path).Dependencies,
})
}
// Now do the dependencies. We do this _after_ adding all the orphan
// nodes above because there are cases in which the orphans themselves
// depend on other orphans.
// Resource dependencies
for _, v := range resourceVertexes {
g.ConnectDependent(v)
}
// Module dependencies
for _, v := range moduleVertexes {
g.ConnectDependent(v)
}
return nil
}