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catalog.go
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catalog.go
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package catalog
import (
"context"
"errors"
"fmt"
"os"
"path/filepath"
"slices"
"sort"
"strings"
"github.com/davidmdm/x/xerr"
"gopkg.in/godo.v2/glob"
"github.com/nestoca/joy/api/v1alpha1"
"github.com/nestoca/joy/internal/release/cross"
"github.com/nestoca/joy/internal/release/filtering"
"github.com/nestoca/joy/internal/yml"
)
// Export internal catalog types so that they can worked with from code that use
// the public joy packages.
type (
ReleaseList = cross.ReleaseList
Release = cross.Release
)
type Catalog struct {
Environments []*v1alpha1.Environment
Releases ReleaseList
Projects []*v1alpha1.Project
Files []*yml.File
}
func Load(dir string, validChartRefs []string) (*Catalog, error) {
// Get absolute and clean path of directory, so we can determine whether a release belongs to an environment
// by simply comparing the beginning of their paths.
dir, err := filepath.Abs(dir)
if err != nil {
return nil, fmt.Errorf("getting absolute path of %s: %w", dir, err)
}
dir = filepath.Clean(dir)
// Ensure directory exists
if _, err := os.Stat(dir); err != nil {
if os.IsNotExist(err) {
return nil, fmt.Errorf("catalog directory not found: %q", dir)
}
}
// Find all files matching the glob expression
globExpr := filepath.Join(dir, "**/*.yaml")
fileAssets, _, err := glob.Glob([]string{globExpr})
if err != nil {
return nil, fmt.Errorf("matching files with glob expression %s: %w", globExpr, err)
}
// Load all matching files
c := &Catalog{}
for _, fileAsset := range fileAssets {
file, err := yml.LoadFile(fileAsset.Path)
if err != nil {
return nil, fmt.Errorf("loading yaml file %s: %w", fileAsset.Path, err)
}
// Only keep Joy CRDs
if isValid(file) {
c.Files = append(c.Files, file)
}
}
c.Environments, err = c.loadEnvironments(nil, true)
if err != nil {
return nil, fmt.Errorf("loading environments: %w", err)
}
var errs []error
for _, env := range c.Environments {
if err := env.Validate(validChartRefs); err != nil {
errs = append(errs, fmt.Errorf("%s: %w", env.Name, err))
}
}
if err := xerr.MultiErrOrderedFrom("validating environments", errs...); err != nil {
return nil, err
}
c.Projects, err = c.loadProjects()
if err != nil {
return nil, fmt.Errorf("loading projects: %w", err)
}
allReleaseFiles := c.GetFilesByKind(v1alpha1.ReleaseKind)
if err := validateTagsForFiles(allReleaseFiles); err != nil {
return nil, fmt.Errorf("release files with invalid tags: %w", err)
}
c.Releases, err = cross.LoadReleaseList(allReleaseFiles, c.Environments, c.Projects, nil)
if err != nil {
return nil, fmt.Errorf("loading cross-environment releases: %w", err)
}
if err := c.ResolveRefs(); err != nil {
return nil, fmt.Errorf("resolving references: %w", err)
}
for _, cross := range c.Releases.Items {
for _, release := range cross.Releases {
if release == nil {
continue
}
if err := release.Spec.Chart.Validate(validChartRefs); err != nil {
errs = append(errs, fmt.Errorf("%s/%s: invalid chart: %w", release.Name, release.Environment.Name, err))
}
}
}
if err := xerr.MultiErrOrderedFrom("validating releases", errs...); err != nil {
return nil, err
}
return c, nil
}
func (c *Catalog) WithReleaseFilter(filter filtering.Filter) *Catalog {
if filter == nil {
return c
}
releases := c.Releases.Items
c.Releases.Items = []*cross.Release{}
for _, cross := range releases {
for i, rel := range cross.Releases {
if rel == nil || !filter.Match(rel) {
cross.Releases[i] = nil
}
}
if !slices.ContainsFunc(cross.Releases, func(rel *v1alpha1.Release) bool { return rel != nil }) {
continue
}
c.Releases.Items = append(c.Releases.Items, cross)
}
return c
}
func (c *Catalog) WithEnvironments(names []string) *Catalog {
if len(names) == 0 {
return c
}
allEnvs := c.Environments
c.Environments = []*v1alpha1.Environment{}
var removedIndexes []int
for i, env := range allEnvs {
if slices.Contains(names, env.Name) {
c.Environments = append(c.Environments, env)
} else {
removedIndexes = append(removedIndexes, i)
}
}
c.Releases.Environments = c.Environments
for _, cross := range c.Releases.Items {
releases := cross.Releases
cross.Releases = []*v1alpha1.Release{}
for j, rel := range releases {
if !slices.Contains(removedIndexes, j) {
cross.Releases = append(cross.Releases, rel)
}
}
}
return c
}
func (c *Catalog) ResolveRefs() error {
var errs []error
if len(c.Releases.Items) > 0 {
// Resolve references from releases to projects
if len(c.Projects) > 0 {
err := c.Releases.ResolveProjectRefs(c.Projects)
if err != nil {
errs = append(errs, err)
}
}
// Resolve references from releases to environments
if len(c.Environments) > 0 {
c.Releases.ResolveEnvRefs(c.Environments)
}
}
return errors.Join(errs...)
}
func isValid(file *yml.File) bool {
return v1alpha1.IsValidEnvironment(file.ApiVersion, file.Kind) ||
v1alpha1.IsValidRelease(file.ApiVersion, file.Kind) ||
v1alpha1.IsValidProject(file.ApiVersion, file.Kind)
}
// GetFilesByKind returns all files of the given kind.
func (c *Catalog) GetFilesByKind(kind string) []*yml.File {
var files []*yml.File
for _, file := range c.Files {
if file.Kind == kind {
files = append(files, file)
}
}
return files
}
func (c *Catalog) loadEnvironments(names []string, sortByOrder bool) ([]*v1alpha1.Environment, error) {
// Load all environment files
files := c.GetFilesByKind(v1alpha1.EnvironmentKind)
// If names is empty, load all environments
explicitEnvs := len(names) > 0
var envs []*v1alpha1.Environment
if explicitEnvs {
envs = make([]*v1alpha1.Environment, len(names))
}
remainingNames := slices.Clone(names)
currentIndex := 0
for _, file := range files {
// Skip if not in names
envName := file.MetadataName
if explicitEnvs && !slices.Contains(names, envName) {
continue
}
// Determine environment index
var index int
if explicitEnvs {
// Use index of explicitly requested environment
index = slices.Index(names, envName)
// Skip non-requested environments
if index == -1 {
continue
}
}
// Load environment
env, err := v1alpha1.NewEnvironment(file)
if err != nil {
return nil, fmt.Errorf("loading environment from %s: %w", file.Path, err)
}
// Add environment to list
if explicitEnvs {
envs[index] = env
} else {
envs = append(envs, env)
}
remainingNames = slices.DeleteFunc(remainingNames, func(x string) bool { return x == envName })
currentIndex++
}
// Ensure we found all requested environments
if len(remainingNames) > 0 {
return nil, fmt.Errorf("environments not found: %s", strings.Join(remainingNames, ", "))
}
// Sort environments by order
if sortByOrder {
sort.Slice(envs, func(i, j int) bool {
return envs[i].Spec.Order < envs[j].Spec.Order
})
}
return envs, nil
}
func (c *Catalog) loadProjects() ([]*v1alpha1.Project, error) {
files := c.GetFilesByKind(v1alpha1.ProjectKind)
var projects []*v1alpha1.Project
for _, file := range files {
proj, err := v1alpha1.NewProject(file)
if err != nil {
return nil, fmt.Errorf("loading project from %s: %w", file.Path, err)
}
projects = append(projects, proj)
}
// Sort projects by name
sort.Slice(projects, func(i, j int) bool {
return projects[i].Name < projects[j].Name
})
return projects, nil
}
type catalogKey struct{}
func ToContext(ctx context.Context, catalog *Catalog) context.Context {
return context.WithValue(ctx, catalogKey{}, catalog)
}
func FromContext(ctx context.Context) *Catalog {
catalog, _ := ctx.Value(catalogKey{}).(*Catalog)
if catalog == nil {
panic("catalog loaded from context but is absent: cannot continue")
}
return catalog
}