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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| settings: | ||
| cluster: | ||
| name: "cluster-01" | ||
| Context: {{- toYaml $ | nindent 4 }} |
17 changes: 17 additions & 0 deletions
17
examples/02-overlays/clusters/cluster-01/workers/subst.yaml
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,17 @@ | ||
| settings: | ||
| cluster: | ||
| name: "cluster-01" | ||
| resources: | ||
| - metdata: | ||
| name: "test" | ||
| - apiVersion: v1 | ||
| kind: Pod | ||
| metadata: | ||
| name: nginx | ||
| spec: | ||
| containers: | ||
| - name: nginx | ||
| image: nginx:1.14.2 | ||
| ports: | ||
| - containerPort: 80 | ||
| Context: {{- toYaml $ | nindent 4 }} |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,150 @@ | ||
| // Original source: | ||
| // https://raw.githubusercontent.com/helm/helm/952708b436bb2c8d5ef0e2e9ef1d8aabe64aeae9/pkg/engine/funcs.go | ||
| package utils | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "strings" | ||
| "text/template" | ||
|
|
||
| "github.com/BurntSushi/toml" | ||
| "github.com/Masterminds/sprig/v3" | ||
| "sigs.k8s.io/yaml" | ||
| ) | ||
|
|
||
| // funcMap returns a mapping of all of the functions that Engine has. | ||
| // | ||
| // Because some functions are late-bound (e.g. contain context-sensitive | ||
| // data), the functions may not all perform identically outside of an Engine | ||
| // as they will inside of an Engine. | ||
| // | ||
| // Known late-bound functions: | ||
| // | ||
| // - "include" | ||
| // - "tpl" | ||
| // | ||
| // These are late-bound in Engine.Render(). The | ||
| // version included in the FuncMap is a placeholder. | ||
| func SprigFuncMap() template.FuncMap { | ||
| f := sprig.TxtFuncMap() | ||
| delete(f, "env") | ||
| delete(f, "expandenv") | ||
|
|
||
| // Add some extra functionality | ||
| extra := template.FuncMap{ | ||
| "toToml": toTOML, | ||
| "toYaml": toYAML, | ||
| "fromYaml": fromYAML, | ||
| "fromYamlArray": fromYAMLArray, | ||
| "toJson": toJSON, | ||
| "fromJson": fromJSON, | ||
| "fromJsonArray": fromJSONArray, | ||
| } | ||
|
|
||
| for k, v := range extra { | ||
| f[k] = v | ||
| } | ||
|
|
||
| return f | ||
| } | ||
|
|
||
| // toYAML takes an interface, marshals it to yaml, and returns a string. It will | ||
| // always return a string, even on marshal error (empty string). | ||
| // | ||
| // This is designed to be called from a template. | ||
| func toYAML(v interface{}) string { | ||
| data, err := yaml.Marshal(v) | ||
| if err != nil { | ||
| // Swallow errors inside of a template. | ||
| return "" | ||
| } | ||
| return strings.TrimSuffix(string(data), "\n") | ||
| } | ||
|
|
||
| // fromYAML converts a YAML document into a map[string]interface{}. | ||
| // | ||
| // This is not a general-purpose YAML parser, and will not parse all valid | ||
| // YAML documents. Additionally, because its intended use is within templates | ||
| // it tolerates errors. It will insert the returned error message string into | ||
| // m["Error"] in the returned map. | ||
| func fromYAML(str string) map[string]interface{} { | ||
| m := map[string]interface{}{} | ||
|
|
||
| if err := yaml.Unmarshal([]byte(str), &m); err != nil { | ||
| m["Error"] = err.Error() | ||
| } | ||
| return m | ||
| } | ||
|
|
||
| // fromYAMLArray converts a YAML array into a []interface{}. | ||
| // | ||
| // This is not a general-purpose YAML parser, and will not parse all valid | ||
| // YAML documents. Additionally, because its intended use is within templates | ||
| // it tolerates errors. It will insert the returned error message string as | ||
| // the first and only item in the returned array. | ||
| func fromYAMLArray(str string) []interface{} { | ||
| a := []interface{}{} | ||
|
|
||
| if err := yaml.Unmarshal([]byte(str), &a); err != nil { | ||
| a = []interface{}{err.Error()} | ||
| } | ||
| return a | ||
| } | ||
|
|
||
| // toTOML takes an interface, marshals it to toml, and returns a string. It will | ||
| // always return a string, even on marshal error (empty string). | ||
| // | ||
| // This is designed to be called from a template. | ||
| func toTOML(v interface{}) string { | ||
| b := bytes.NewBuffer(nil) | ||
| e := toml.NewEncoder(b) | ||
| err := e.Encode(v) | ||
| if err != nil { | ||
| return err.Error() | ||
| } | ||
| return b.String() | ||
| } | ||
|
|
||
| // toJSON takes an interface, marshals it to json, and returns a string. It will | ||
| // always return a string, even on marshal error (empty string). | ||
| // | ||
| // This is designed to be called from a template. | ||
| func toJSON(v interface{}) string { | ||
| data, err := json.Marshal(v) | ||
| if err != nil { | ||
| // Swallow errors inside of a template. | ||
| return "" | ||
| } | ||
| return string(data) | ||
| } | ||
|
|
||
| // fromJSON converts a JSON document into a map[string]interface{}. | ||
| // | ||
| // This is not a general-purpose JSON parser, and will not parse all valid | ||
| // JSON documents. Additionally, because its intended use is within templates | ||
| // it tolerates errors. It will insert the returned error message string into | ||
| // m["Error"] in the returned map. | ||
| func fromJSON(str string) map[string]interface{} { | ||
| m := make(map[string]interface{}) | ||
|
|
||
| if err := json.Unmarshal([]byte(str), &m); err != nil { | ||
| m["Error"] = err.Error() | ||
| } | ||
| return m | ||
| } | ||
|
|
||
| // fromJSONArray converts a JSON array into a []interface{}. | ||
| // | ||
| // This is not a general-purpose JSON parser, and will not parse all valid | ||
| // JSON documents. Additionally, because its intended use is within templates | ||
| // it tolerates errors. It will insert the returned error message string as | ||
| // the first and only item in the returned array. | ||
| func fromJSONArray(str string) []interface{} { | ||
| a := []interface{}{} | ||
|
|
||
| if err := json.Unmarshal([]byte(str), &a); err != nil { | ||
| a = []interface{}{err.Error()} | ||
| } | ||
| return a | ||
| } |
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