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feat context: Add support for resource set collections

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A resource set collection is a resource set with an addition 'include' array
configured. It is a short-hand for importing multiple resource sets from the
same folder and for excluding/including them as a group.

See https://github.com/tazjin/kontemplate/issues/9 for more information.

Closes #9
This commit is contained in:
Vincent Ambo 2017-02-08 17:14:40 +01:00
parent d6b16793c1
commit 4e8223ef34
2 changed files with 29 additions and 5 deletions
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24
context/context.go
View file

@ -14,6 +14,10 @@ import (
type ResourceSet struct { type ResourceSet struct {
Name string `json:"name"` Name string `json:"name"`
Values map[string]interface{} `json:"values"` Values map[string]interface{} `json:"values"`
// Fields for resource set collections
Include []ResourceSet `json:"include"`
Parent *string
} }
type Context struct { type Context struct {
@ -63,3 +67,23 @@ func LoadContextFromFile(filename string) (*Context, error) {
return &c, nil return &c, nil
} }
// Flattens resource set collections, i.e. resource sets that themselves have an additional 'include' field set.
// Those will be regarded as a short-hand for including multiple resource sets from a subfolder.
// See https://github.com/tazjin/kontemplate/issues/9 for more information.
func flattenResourceSetCollections(rs *[]ResourceSet) *[]ResourceSet {
flattened := make([]ResourceSet, 0)
for _, r := range *rs {
if len(r.Include) == 0 {
flattened = append(flattened, r)
} else {
for _, subResourceSet := range r.Include {
subResourceSet.Parent = &r.Name
flattened = append(flattened, subResourceSet)
}
}
}
return &flattened
}

10
templater/templater.go
View file

@ -121,7 +121,7 @@ func applyLimits(rs *[]context.ResourceSet, include *[]string, exclude *[]string
// Exclude excluded resource sets // Exclude excluded resource sets
excluded := make([]context.ResourceSet, 0) excluded := make([]context.ResourceSet, 0)
for _, r := range *rs { for _, r := range *rs {
if !contains(exclude, &r.Name) { if !matchesResourceSet(exclude, &r) {
excluded = append(excluded, r) excluded = append(excluded, r)
} }
} }
@ -132,7 +132,7 @@ func applyLimits(rs *[]context.ResourceSet, include *[]string, exclude *[]string
} }
included := make([]context.ResourceSet, 0) included := make([]context.ResourceSet, 0)
for _, r := range excluded { for _, r := range excluded {
if contains(include, &r.Name) { if matchesResourceSet(include, &r) {
included = append(included, r) included = append(included, r)
} }
} }
@ -140,10 +140,10 @@ func applyLimits(rs *[]context.ResourceSet, include *[]string, exclude *[]string
return &included return &included
} }
// Check whether a certain string is contained in a string slice // Check whether an include/exclude string slice matches a resource set
func contains(s *[]string, v *string) bool { func matchesResourceSet(s *[]string, rs *context.ResourceSet) bool {
for _, r := range *s { for _, r := range *s {
if r == *v { if r == rs.Name || r == *rs.Parent {
return true return true
} }
} }