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parse.go
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parse.go
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package manifest
import (
"bytes"
"fmt"
"log"
"path/filepath"
"strings"
"gopkg.in/yaml.v2"
"github.com/agilestacks/hub/cmd/hub/bindata"
"github.com/agilestacks/hub/cmd/hub/config"
"github.com/agilestacks/hub/cmd/hub/storage"
"github.com/agilestacks/hub/cmd/hub/util"
)
func ParseManifest(manifestFilenames []string) (*Manifest, []Manifest, string, error) {
yamlBytes, manifestFilename, err := storage.CheckAndRead(manifestFilenames, "manifest")
if err != nil {
return nil, nil, manifestFilename, fmt.Errorf("Unable to read %v manifest: %v", manifestFilenames, err)
}
yamlDocuments := bytes.Split(yamlBytes, []byte("\n---\n"))
var manifests []Manifest
for i, yamlDocument := range yamlDocuments {
if len(yamlDocument) == 0 {
continue
}
validateManifest(fmt.Sprintf("%s[%d]", manifestFilename, i), yamlDocument)
var manifest Manifest
err = yaml.Unmarshal(yamlDocument, &manifest)
if err != nil {
return nil, nil, manifestFilename, fmt.Errorf("Unable to parse %s (doc %d/%d): %v",
manifestFilename, i+1, len(yamlDocuments), err)
}
manifest.Document = string(yamlDocument)
manifests = append(manifests, manifest)
}
if len(manifests) == 0 {
return nil, nil, manifestFilename, fmt.Errorf("No YAML documents in %s", manifestFilename)
} else if len(manifests) > 1 {
return &manifests[0], manifests[1:], manifestFilename, nil
} else {
return &manifests[0], nil, manifestFilename, nil
}
}
func ParseParametersManifest(manifestFilenames []string) (*ParametersManifest, string, error) {
yamlBytes, manifestFilename, err := storage.CheckAndRead(manifestFilenames, "parameters")
if err != nil {
return nil, manifestFilename, fmt.Errorf("Unable to read %v: %v", manifestFilenames, err)
}
yamlDocuments := bytes.Split(yamlBytes, []byte("\n---\n"))
for i, yamlDocument := range yamlDocuments {
if len(yamlDocument) == 0 {
continue
}
validateManifest(manifestFilename, yamlDocument)
var manifest ParametersManifest
err = yaml.Unmarshal(yamlDocument, &manifest)
if err != nil {
return nil, manifestFilename, fmt.Errorf("Unable to parse %s: %v", manifestFilename, err)
}
if len(yamlDocuments) > i+1 {
util.Warn("Parameters manifest `%s` contains more than one YAML document, only first is used",
manifestFilename)
}
if len(manifest.Parameters) == 0 && config.Verbose {
log.Printf("Parameters manifest `%s` contains no parameters",
manifestFilename)
}
return &manifest, manifestFilename, nil
}
return nil, manifestFilename, fmt.Errorf("No YAML documents found in %s", manifestFilename)
}
func GetWellKnownParametersManifest() (*WellKnownParametersManifest, error) {
yamlBytes, err := bindata.Asset("meta/hub-well-known-parameters.yaml")
if err != nil {
return nil, fmt.Errorf("No well-known parameters embedded: %v", err)
}
yamlDocuments := bytes.Split(yamlBytes, []byte("\n---\n"))
for i, yamlDocument := range yamlDocuments {
if len(yamlDocument) == 0 {
continue
}
var manifest WellKnownParametersManifest
err = yaml.Unmarshal(yamlDocument, &manifest)
if err != nil {
return nil, fmt.Errorf("Unable to parse well-known parameters: %v", err)
}
if len(yamlDocuments) > i+1 {
util.Warn("Embedded well-known parameters manifest contains more than one YAML document, only first is used")
}
return &manifest, nil
}
return nil, fmt.Errorf("No YAML documents found in embedded well-known parameters manifest")
}
func ParseComponentsManifests(components []ComponentRef, stackBaseDir string, componentsBaseDir string) ([]Manifest, error) {
manifests := make([]Manifest, 0, len(components))
for _, component := range components {
dir := ComponentSourceDirFromRef(&component, stackBaseDir, componentsBaseDir)
filename := filepath.Join(dir, "hub-component.yaml")
manifest, rest, _, err := ParseManifest([]string{filename})
if err != nil {
return nil, fmt.Errorf("Unable to parse component `%s` manifest: %v",
ComponentQualifiedNameFromRef(&component), err)
}
if len(rest) > 0 {
util.Warn("Component `%s` manifest `%s` contains more than one YAML document, only first is used",
ComponentQualifiedNameFromRef(&component), filename)
}
if len(manifest.Parameters) == 0 && config.Verbose {
log.Printf("Component manifest `%s` contains no parameters",
filename)
}
if manifest.Meta.Origin == "" {
manifest.Meta.Origin = manifest.Meta.Name
}
if manifest.Meta.Kind == "" {
manifest.Meta.Kind = manifest.Meta.Name
}
manifest.Meta.Name = component.Name
manifests = append(manifests, *manifest)
}
return manifests, nil
}
func ParseComponentsManifestsWithExclusion(components []ComponentRef, excludedComponents []string,
stackBaseDir string, componentsBaseDir string) ([]Manifest, error) {
if config.Debug && len(excludedComponents) > 0 {
log.Printf("Components excluded from parsing (in parent stack):\n\t%s",
strings.Join(excludedComponents, ", "))
}
filtered := make([]ComponentRef, 0, len(components))
for _, ref := range components {
fqName := ComponentQualifiedNameFromRef(&ref)
found := false
for _, excluded := range excludedComponents {
if fqName == excluded {
found = true
break
}
}
if !found {
filtered = append(filtered, ref)
}
}
return ParseComponentsManifests(filtered, stackBaseDir, componentsBaseDir)
}