terraform: Check module config for resource instead of state

This commit is contained in:
Armon Dadgar 2014-12-09 00:25:06 -08:00
parent e82a28529d
commit 0a3d7bd121
1 changed files with 60 additions and 39 deletions

View File

@ -1650,21 +1650,28 @@ func (c *walkContext) computeResourceVariable(
c.Context.sl.RLock()
defer c.Context.sl.RUnlock()
// Get the relevant module
module := c.Context.state.ModuleByPath(c.Path)
// Get the information about this resource variable, and verify
// that it exists and such.
module, _, err := c.resourceVariableInfo(v)
if err != nil {
return "", err
}
var r *ResourceState
if module != nil {
var ok bool
r, ok = module.Resources[id]
// If we have no module in the state yet or count, return empty
if module == nil || len(module.Resources) == 0 {
return "", nil
}
// Get the resource out from the state. We know the state exists
// at this point and if there is a state, we expect there to be a
// resource with the given name.
r, ok := module.Resources[id]
if !ok && v.Multi && v.Index == 0 {
r, ok = module.Resources[v.ResourceId()]
}
if !ok {
r = nil
}
}
if r == nil {
return "", fmt.Errorf(
"Resource '%s' not found for variable '%s'",
@ -1707,34 +1714,14 @@ func (c *walkContext) computeResourceMultiVariable(
c.Context.sl.RLock()
defer c.Context.sl.RUnlock()
childPath := c.Path[1:len(c.Path)]
var modTree *module.Tree
if len(childPath) == 0 {
modTree = c.Context.module
} else {
modTree = c.Context.module.Child(childPath)
// Get the information about this resource variable, and verify
// that it exists and such.
module, cr, err := c.resourceVariableInfo(v)
if err != nil {
return "", err
}
// Get the resource from the configuration so we can know how
// many of the resource there is.
var cr *config.Resource
for _, r := range modTree.Config().Resources {
if r.Id() == v.ResourceId() {
cr = r
break
}
}
if cr == nil {
return "", fmt.Errorf(
"Resource '%s' not found for variable '%s'",
v.ResourceId(),
v.FullKey())
}
// Get the relevant module
module := c.Context.state.ModuleByPath(c.Path)
// Get the count so we know how many to iterate over
count, err := cr.Count()
if err != nil {
return "", fmt.Errorf(
@ -1787,6 +1774,40 @@ func (c *walkContext) computeResourceMultiVariable(
return strings.Join(values, config.InterpSplitDelim), nil
}
func (c *walkContext) resourceVariableInfo(
v *config.ResourceVariable) (*ModuleState, *config.Resource, error) {
// Get the module tree that contains our current path. This is
// either the current module (path is empty) or a child.
var modTree *module.Tree
childPath := c.Path[1:len(c.Path)]
if len(childPath) == 0 {
modTree = c.Context.module
} else {
modTree = c.Context.module.Child(childPath)
}
// Get the resource from the configuration so we can verify
// that the resource is in the configuration and so we can access
// the configuration if we need to.
var cr *config.Resource
for _, r := range modTree.Config().Resources {
if r.Id() == v.ResourceId() {
cr = r
break
}
}
if cr == nil {
return nil, nil, fmt.Errorf(
"Resource '%s' not found for variable '%s'",
v.ResourceId(),
v.FullKey())
}
// Get the relevant module
module := c.Context.state.ModuleByPath(c.Path)
return module, cr, nil
}
type walkInputMeta struct {
sync.Mutex