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-rw-r--r--pkg/model/workflow.go763
1 files changed, 763 insertions, 0 deletions
diff --git a/pkg/model/workflow.go b/pkg/model/workflow.go
new file mode 100644
index 0000000..7bec766
--- /dev/null
+++ b/pkg/model/workflow.go
@@ -0,0 +1,763 @@
+package model
+
+import (
+ "fmt"
+ "io"
+ "reflect"
+ "regexp"
+ "strconv"
+ "strings"
+
+ "github.com/nektos/act/pkg/common"
+ log "github.com/sirupsen/logrus"
+ "gopkg.in/yaml.v3"
+)
+
+// Workflow is the structure of the files in .github/workflows
+type Workflow struct {
+ File string
+ Name string `yaml:"name"`
+ RawOn yaml.Node `yaml:"on"`
+ Env map[string]string `yaml:"env"`
+ Jobs map[string]*Job `yaml:"jobs"`
+ Defaults Defaults `yaml:"defaults"`
+}
+
+// On events for the workflow
+func (w *Workflow) On() []string {
+ switch w.RawOn.Kind {
+ case yaml.ScalarNode:
+ var val string
+ err := w.RawOn.Decode(&val)
+ if err != nil {
+ log.Fatal(err)
+ }
+ return []string{val}
+ case yaml.SequenceNode:
+ var val []string
+ err := w.RawOn.Decode(&val)
+ if err != nil {
+ log.Fatal(err)
+ }
+ return val
+ case yaml.MappingNode:
+ var val map[string]interface{}
+ err := w.RawOn.Decode(&val)
+ if err != nil {
+ log.Fatal(err)
+ }
+ var keys []string
+ for k := range val {
+ keys = append(keys, k)
+ }
+ return keys
+ }
+ return nil
+}
+
+func (w *Workflow) OnEvent(event string) interface{} {
+ if w.RawOn.Kind == yaml.MappingNode {
+ var val map[string]interface{}
+ if !decodeNode(w.RawOn, &val) {
+ return nil
+ }
+ return val[event]
+ }
+ return nil
+}
+
+func (w *Workflow) OnSchedule() []string {
+ schedules := w.OnEvent("schedule")
+ if schedules == nil {
+ return []string{}
+ }
+
+ switch val := schedules.(type) {
+ case []interface{}:
+ allSchedules := []string{}
+ for _, v := range val {
+ for k, cron := range v.(map[string]interface{}) {
+ if k != "cron" {
+ continue
+ }
+ allSchedules = append(allSchedules, cron.(string))
+ }
+ }
+ return allSchedules
+ default:
+ }
+
+ return []string{}
+}
+
+type WorkflowDispatchInput struct {
+ Description string `yaml:"description"`
+ Required bool `yaml:"required"`
+ Default string `yaml:"default"`
+ Type string `yaml:"type"`
+ Options []string `yaml:"options"`
+}
+
+type WorkflowDispatch struct {
+ Inputs map[string]WorkflowDispatchInput `yaml:"inputs"`
+}
+
+func (w *Workflow) WorkflowDispatchConfig() *WorkflowDispatch {
+ switch w.RawOn.Kind {
+ case yaml.ScalarNode:
+ var val string
+ if !decodeNode(w.RawOn, &val) {
+ return nil
+ }
+ if val == "workflow_dispatch" {
+ return &WorkflowDispatch{}
+ }
+ case yaml.SequenceNode:
+ var val []string
+ if !decodeNode(w.RawOn, &val) {
+ return nil
+ }
+ for _, v := range val {
+ if v == "workflow_dispatch" {
+ return &WorkflowDispatch{}
+ }
+ }
+ case yaml.MappingNode:
+ var val map[string]yaml.Node
+ if !decodeNode(w.RawOn, &val) {
+ return nil
+ }
+
+ n, found := val["workflow_dispatch"]
+ var workflowDispatch WorkflowDispatch
+ if found && decodeNode(n, &workflowDispatch) {
+ return &workflowDispatch
+ }
+ default:
+ return nil
+ }
+ return nil
+}
+
+type WorkflowCallInput struct {
+ Description string `yaml:"description"`
+ Required bool `yaml:"required"`
+ Default string `yaml:"default"`
+ Type string `yaml:"type"`
+}
+
+type WorkflowCallOutput struct {
+ Description string `yaml:"description"`
+ Value string `yaml:"value"`
+}
+
+type WorkflowCall struct {
+ Inputs map[string]WorkflowCallInput `yaml:"inputs"`
+ Outputs map[string]WorkflowCallOutput `yaml:"outputs"`
+}
+
+type WorkflowCallResult struct {
+ Outputs map[string]string
+}
+
+func (w *Workflow) WorkflowCallConfig() *WorkflowCall {
+ if w.RawOn.Kind != yaml.MappingNode {
+ // The callers expect for "on: workflow_call" and "on: [ workflow_call ]" a non nil return value
+ return &WorkflowCall{}
+ }
+
+ var val map[string]yaml.Node
+ if !decodeNode(w.RawOn, &val) {
+ return &WorkflowCall{}
+ }
+
+ var config WorkflowCall
+ node := val["workflow_call"]
+ if !decodeNode(node, &config) {
+ return &WorkflowCall{}
+ }
+
+ return &config
+}
+
+// Job is the structure of one job in a workflow
+type Job struct {
+ Name string `yaml:"name"`
+ RawNeeds yaml.Node `yaml:"needs"`
+ RawRunsOn yaml.Node `yaml:"runs-on"`
+ Env yaml.Node `yaml:"env"`
+ If yaml.Node `yaml:"if"`
+ Steps []*Step `yaml:"steps"`
+ TimeoutMinutes string `yaml:"timeout-minutes"`
+ Services map[string]*ContainerSpec `yaml:"services"`
+ Strategy *Strategy `yaml:"strategy"`
+ RawContainer yaml.Node `yaml:"container"`
+ Defaults Defaults `yaml:"defaults"`
+ Outputs map[string]string `yaml:"outputs"`
+ Uses string `yaml:"uses"`
+ With map[string]interface{} `yaml:"with"`
+ RawSecrets yaml.Node `yaml:"secrets"`
+ Result string
+}
+
+// Strategy for the job
+type Strategy struct {
+ FailFast bool
+ MaxParallel int
+ FailFastString string `yaml:"fail-fast"`
+ MaxParallelString string `yaml:"max-parallel"`
+ RawMatrix yaml.Node `yaml:"matrix"`
+}
+
+// Default settings that will apply to all steps in the job or workflow
+type Defaults struct {
+ Run RunDefaults `yaml:"run"`
+}
+
+// Defaults for all run steps in the job or workflow
+type RunDefaults struct {
+ Shell string `yaml:"shell"`
+ WorkingDirectory string `yaml:"working-directory"`
+}
+
+// GetMaxParallel sets default and returns value for `max-parallel`
+func (s Strategy) GetMaxParallel() int {
+ // MaxParallel default value is `GitHub will maximize the number of jobs run in parallel depending on the available runners on GitHub-hosted virtual machines`
+ // So I take the liberty to hardcode default limit to 4 and this is because:
+ // 1: tl;dr: self-hosted does only 1 parallel job - https://github.com/actions/runner/issues/639#issuecomment-825212735
+ // 2: GH has 20 parallel job limit (for free tier) - https://github.com/github/docs/blob/3ae84420bd10997bb5f35f629ebb7160fe776eae/content/actions/reference/usage-limits-billing-and-administration.md?plain=1#L45
+ // 3: I want to add support for MaxParallel to act and 20! parallel jobs is a bit overkill IMHO
+ maxParallel := 4
+ if s.MaxParallelString != "" {
+ var err error
+ if maxParallel, err = strconv.Atoi(s.MaxParallelString); err != nil {
+ log.Errorf("Failed to parse 'max-parallel' option: %v", err)
+ }
+ }
+ return maxParallel
+}
+
+// GetFailFast sets default and returns value for `fail-fast`
+func (s Strategy) GetFailFast() bool {
+ // FailFast option is true by default: https://github.com/github/docs/blob/3ae84420bd10997bb5f35f629ebb7160fe776eae/content/actions/reference/workflow-syntax-for-github-actions.md?plain=1#L1107
+ failFast := true
+ log.Debug(s.FailFastString)
+ if s.FailFastString != "" {
+ var err error
+ if failFast, err = strconv.ParseBool(s.FailFastString); err != nil {
+ log.Errorf("Failed to parse 'fail-fast' option: %v", err)
+ }
+ }
+ return failFast
+}
+
+func (j *Job) InheritSecrets() bool {
+ if j.RawSecrets.Kind != yaml.ScalarNode {
+ return false
+ }
+
+ var val string
+ if !decodeNode(j.RawSecrets, &val) {
+ return false
+ }
+
+ return val == "inherit"
+}
+
+func (j *Job) Secrets() map[string]string {
+ if j.RawSecrets.Kind != yaml.MappingNode {
+ return nil
+ }
+
+ var val map[string]string
+ if !decodeNode(j.RawSecrets, &val) {
+ return nil
+ }
+
+ return val
+}
+
+// Container details for the job
+func (j *Job) Container() *ContainerSpec {
+ var val *ContainerSpec
+ switch j.RawContainer.Kind {
+ case yaml.ScalarNode:
+ val = new(ContainerSpec)
+ if !decodeNode(j.RawContainer, &val.Image) {
+ return nil
+ }
+ case yaml.MappingNode:
+ val = new(ContainerSpec)
+ if !decodeNode(j.RawContainer, val) {
+ return nil
+ }
+ }
+ return val
+}
+
+// Needs list for Job
+func (j *Job) Needs() []string {
+ switch j.RawNeeds.Kind {
+ case yaml.ScalarNode:
+ var val string
+ if !decodeNode(j.RawNeeds, &val) {
+ return nil
+ }
+ return []string{val}
+ case yaml.SequenceNode:
+ var val []string
+ if !decodeNode(j.RawNeeds, &val) {
+ return nil
+ }
+ return val
+ }
+ return nil
+}
+
+// RunsOn list for Job
+func (j *Job) RunsOn() []string {
+ switch j.RawRunsOn.Kind {
+ case yaml.MappingNode:
+ var val struct {
+ Group string
+ Labels yaml.Node
+ }
+
+ if !decodeNode(j.RawRunsOn, &val) {
+ return nil
+ }
+
+ labels := nodeAsStringSlice(val.Labels)
+
+ if val.Group != "" {
+ labels = append(labels, val.Group)
+ }
+
+ return labels
+ default:
+ return nodeAsStringSlice(j.RawRunsOn)
+ }
+}
+
+func nodeAsStringSlice(node yaml.Node) []string {
+ switch node.Kind {
+ case yaml.ScalarNode:
+ var val string
+ if !decodeNode(node, &val) {
+ return nil
+ }
+ return []string{val}
+ case yaml.SequenceNode:
+ var val []string
+ if !decodeNode(node, &val) {
+ return nil
+ }
+ return val
+ }
+ return nil
+}
+
+func environment(yml yaml.Node) map[string]string {
+ env := make(map[string]string)
+ if yml.Kind == yaml.MappingNode {
+ if !decodeNode(yml, &env) {
+ return nil
+ }
+ }
+ return env
+}
+
+// Environments returns string-based key=value map for a job
+func (j *Job) Environment() map[string]string {
+ return environment(j.Env)
+}
+
+// Matrix decodes RawMatrix YAML node
+func (j *Job) Matrix() map[string][]interface{} {
+ if j.Strategy.RawMatrix.Kind == yaml.MappingNode {
+ var val map[string][]interface{}
+ if !decodeNode(j.Strategy.RawMatrix, &val) {
+ return nil
+ }
+ return val
+ }
+ return nil
+}
+
+// GetMatrixes returns the matrix cross product
+// It skips includes and hard fails excludes for non-existing keys
+//
+//nolint:gocyclo
+func (j *Job) GetMatrixes() ([]map[string]interface{}, error) {
+ matrixes := make([]map[string]interface{}, 0)
+ if j.Strategy != nil {
+ j.Strategy.FailFast = j.Strategy.GetFailFast()
+ j.Strategy.MaxParallel = j.Strategy.GetMaxParallel()
+
+ if m := j.Matrix(); m != nil {
+ includes := make([]map[string]interface{}, 0)
+ extraIncludes := make([]map[string]interface{}, 0)
+ for _, v := range m["include"] {
+ switch t := v.(type) {
+ case []interface{}:
+ for _, i := range t {
+ i := i.(map[string]interface{})
+ extraInclude := true
+ for k := range i {
+ if _, ok := m[k]; ok {
+ includes = append(includes, i)
+ extraInclude = false
+ break
+ }
+ }
+ if extraInclude {
+ extraIncludes = append(extraIncludes, i)
+ }
+ }
+ case interface{}:
+ v := v.(map[string]interface{})
+ extraInclude := true
+ for k := range v {
+ if _, ok := m[k]; ok {
+ includes = append(includes, v)
+ extraInclude = false
+ break
+ }
+ }
+ if extraInclude {
+ extraIncludes = append(extraIncludes, v)
+ }
+ }
+ }
+ delete(m, "include")
+
+ excludes := make([]map[string]interface{}, 0)
+ for _, e := range m["exclude"] {
+ e := e.(map[string]interface{})
+ for k := range e {
+ if _, ok := m[k]; ok {
+ excludes = append(excludes, e)
+ } else {
+ // We fail completely here because that's what GitHub does for non-existing matrix keys, fail on exclude, silent skip on include
+ return nil, fmt.Errorf("the workflow is not valid. Matrix exclude key %q does not match any key within the matrix", k)
+ }
+ }
+ }
+ delete(m, "exclude")
+
+ matrixProduct := common.CartesianProduct(m)
+ MATRIX:
+ for _, matrix := range matrixProduct {
+ for _, exclude := range excludes {
+ if commonKeysMatch(matrix, exclude) {
+ log.Debugf("Skipping matrix '%v' due to exclude '%v'", matrix, exclude)
+ continue MATRIX
+ }
+ }
+ matrixes = append(matrixes, matrix)
+ }
+ for _, include := range includes {
+ matched := false
+ for _, matrix := range matrixes {
+ if commonKeysMatch2(matrix, include, m) {
+ matched = true
+ log.Debugf("Adding include values '%v' to existing entry", include)
+ for k, v := range include {
+ matrix[k] = v
+ }
+ }
+ }
+ if !matched {
+ extraIncludes = append(extraIncludes, include)
+ }
+ }
+ for _, include := range extraIncludes {
+ log.Debugf("Adding include '%v'", include)
+ matrixes = append(matrixes, include)
+ }
+ if len(matrixes) == 0 {
+ matrixes = append(matrixes, make(map[string]interface{}))
+ }
+ } else {
+ matrixes = append(matrixes, make(map[string]interface{}))
+ }
+ } else {
+ matrixes = append(matrixes, make(map[string]interface{}))
+ log.Debugf("Empty Strategy, matrixes=%v", matrixes)
+ }
+ return matrixes, nil
+}
+
+func commonKeysMatch(a map[string]interface{}, b map[string]interface{}) bool {
+ for aKey, aVal := range a {
+ if bVal, ok := b[aKey]; ok && !reflect.DeepEqual(aVal, bVal) {
+ return false
+ }
+ }
+ return true
+}
+
+func commonKeysMatch2(a map[string]interface{}, b map[string]interface{}, m map[string][]interface{}) bool {
+ for aKey, aVal := range a {
+ _, useKey := m[aKey]
+ if bVal, ok := b[aKey]; useKey && ok && !reflect.DeepEqual(aVal, bVal) {
+ return false
+ }
+ }
+ return true
+}
+
+// JobType describes what type of job we are about to run
+type JobType int
+
+const (
+ // JobTypeDefault is all jobs that have a `run` attribute
+ JobTypeDefault JobType = iota
+
+ // JobTypeReusableWorkflowLocal is all jobs that have a `uses` that is a local workflow in the .github/workflows directory
+ JobTypeReusableWorkflowLocal
+
+ // JobTypeReusableWorkflowRemote is all jobs that have a `uses` that references a workflow file in a github repo
+ JobTypeReusableWorkflowRemote
+
+ // JobTypeInvalid represents a job which is not configured correctly
+ JobTypeInvalid
+)
+
+func (j JobType) String() string {
+ switch j {
+ case JobTypeDefault:
+ return "default"
+ case JobTypeReusableWorkflowLocal:
+ return "local-reusable-workflow"
+ case JobTypeReusableWorkflowRemote:
+ return "remote-reusable-workflow"
+ }
+ return "unknown"
+}
+
+// Type returns the type of the job
+func (j *Job) Type() (JobType, error) {
+ isReusable := j.Uses != ""
+
+ if isReusable {
+ isYaml, _ := regexp.MatchString(`\.(ya?ml)(?:$|@)`, j.Uses)
+
+ if isYaml {
+ isLocalPath := strings.HasPrefix(j.Uses, "./")
+ isRemotePath, _ := regexp.MatchString(`^[^.](.+?/){2,}.+\.ya?ml@`, j.Uses)
+ hasVersion, _ := regexp.MatchString(`\.ya?ml@`, j.Uses)
+
+ if isLocalPath {
+ return JobTypeReusableWorkflowLocal, nil
+ } else if isRemotePath && hasVersion {
+ return JobTypeReusableWorkflowRemote, nil
+ }
+ }
+
+ return JobTypeInvalid, fmt.Errorf("`uses` key references invalid workflow path '%s'. Must start with './' if it's a local workflow, or must start with '<org>/<repo>/' and include an '@' if it's a remote workflow", j.Uses)
+ }
+
+ return JobTypeDefault, nil
+}
+
+// ContainerSpec is the specification of the container to use for the job
+type ContainerSpec struct {
+ Image string `yaml:"image"`
+ Env map[string]string `yaml:"env"`
+ Ports []string `yaml:"ports"`
+ Volumes []string `yaml:"volumes"`
+ Options string `yaml:"options"`
+ Credentials map[string]string `yaml:"credentials"`
+ Entrypoint string
+ Args string
+ Name string
+ Reuse bool
+
+ // Gitea specific
+ Cmd []string `yaml:"cmd"`
+}
+
+// Step is the structure of one step in a job
+type Step struct {
+ Number int `yaml:"-"`
+ ID string `yaml:"id"`
+ If yaml.Node `yaml:"if"`
+ Name string `yaml:"name"`
+ Uses string `yaml:"uses"`
+ Run string `yaml:"run"`
+ WorkingDirectory string `yaml:"working-directory"`
+ Shell string `yaml:"shell"`
+ Env yaml.Node `yaml:"env"`
+ With map[string]string `yaml:"with"`
+ RawContinueOnError string `yaml:"continue-on-error"`
+ TimeoutMinutes string `yaml:"timeout-minutes"`
+}
+
+// String gets the name of step
+func (s *Step) String() string {
+ if s.Name != "" {
+ return s.Name
+ } else if s.Uses != "" {
+ return s.Uses
+ } else if s.Run != "" {
+ return s.Run
+ }
+ return s.ID
+}
+
+// Environments returns string-based key=value map for a step
+func (s *Step) Environment() map[string]string {
+ return environment(s.Env)
+}
+
+// GetEnv gets the env for a step
+func (s *Step) GetEnv() map[string]string {
+ env := s.Environment()
+
+ for k, v := range s.With {
+ envKey := regexp.MustCompile("[^A-Z0-9-]").ReplaceAllString(strings.ToUpper(k), "_")
+ envKey = fmt.Sprintf("INPUT_%s", strings.ToUpper(envKey))
+ env[envKey] = v
+ }
+ return env
+}
+
+// ShellCommand returns the command for the shell
+func (s *Step) ShellCommand() string {
+ shellCommand := ""
+
+ // Reference: https://github.com/actions/runner/blob/8109c962f09d9acc473d92c595ff43afceddb347/src/Runner.Worker/Handlers/ScriptHandlerHelpers.cs#L9-L17
+ switch s.Shell {
+ case "", "bash":
+ shellCommand = "bash --noprofile --norc -e -o pipefail {0}"
+ case "pwsh":
+ shellCommand = "pwsh -command . '{0}'"
+ case "python":
+ shellCommand = "python {0}"
+ case "sh":
+ shellCommand = "sh -e {0}"
+ case "cmd":
+ shellCommand = "cmd /D /E:ON /V:OFF /S /C \"CALL \"{0}\"\""
+ case "powershell":
+ shellCommand = "powershell -command . '{0}'"
+ default:
+ shellCommand = s.Shell
+ }
+ return shellCommand
+}
+
+// StepType describes what type of step we are about to run
+type StepType int
+
+const (
+ // StepTypeRun is all steps that have a `run` attribute
+ StepTypeRun StepType = iota
+
+ // StepTypeUsesDockerURL is all steps that have a `uses` that is of the form `docker://...`
+ StepTypeUsesDockerURL
+
+ // StepTypeUsesActionLocal is all steps that have a `uses` that is a local action in a subdirectory
+ StepTypeUsesActionLocal
+
+ // StepTypeUsesActionRemote is all steps that have a `uses` that is a reference to a github repo
+ StepTypeUsesActionRemote
+
+ // StepTypeReusableWorkflowLocal is all steps that have a `uses` that is a local workflow in the .github/workflows directory
+ StepTypeReusableWorkflowLocal
+
+ // StepTypeReusableWorkflowRemote is all steps that have a `uses` that references a workflow file in a github repo
+ StepTypeReusableWorkflowRemote
+
+ // StepTypeInvalid is for steps that have invalid step action
+ StepTypeInvalid
+)
+
+func (s StepType) String() string {
+ switch s {
+ case StepTypeInvalid:
+ return "invalid"
+ case StepTypeRun:
+ return "run"
+ case StepTypeUsesActionLocal:
+ return "local-action"
+ case StepTypeUsesActionRemote:
+ return "remote-action"
+ case StepTypeUsesDockerURL:
+ return "docker"
+ case StepTypeReusableWorkflowLocal:
+ return "local-reusable-workflow"
+ case StepTypeReusableWorkflowRemote:
+ return "remote-reusable-workflow"
+ }
+ return "unknown"
+}
+
+// Type returns the type of the step
+func (s *Step) Type() StepType {
+ if s.Run == "" && s.Uses == "" {
+ return StepTypeInvalid
+ }
+
+ if s.Run != "" {
+ if s.Uses != "" {
+ return StepTypeInvalid
+ }
+ return StepTypeRun
+ } else if strings.HasPrefix(s.Uses, "docker://") {
+ return StepTypeUsesDockerURL
+ } else if strings.HasPrefix(s.Uses, "./.github/workflows") && (strings.HasSuffix(s.Uses, ".yml") || strings.HasSuffix(s.Uses, ".yaml")) {
+ return StepTypeReusableWorkflowLocal
+ } else if !strings.HasPrefix(s.Uses, "./") && strings.Contains(s.Uses, ".github/workflows") && (strings.Contains(s.Uses, ".yml@") || strings.Contains(s.Uses, ".yaml@")) {
+ return StepTypeReusableWorkflowRemote
+ } else if strings.HasPrefix(s.Uses, "./") {
+ return StepTypeUsesActionLocal
+ }
+ return StepTypeUsesActionRemote
+}
+
+// ReadWorkflow returns a list of jobs for a given workflow file reader
+func ReadWorkflow(in io.Reader) (*Workflow, error) {
+ w := new(Workflow)
+ err := yaml.NewDecoder(in).Decode(w)
+ return w, err
+}
+
+// GetJob will get a job by name in the workflow
+func (w *Workflow) GetJob(jobID string) *Job {
+ for id, j := range w.Jobs {
+ if jobID == id {
+ if j.Name == "" {
+ j.Name = id
+ }
+ if j.If.Value == "" {
+ j.If.Value = "success()"
+ }
+ return j
+ }
+ }
+ return nil
+}
+
+// GetJobIDs will get all the job names in the workflow
+func (w *Workflow) GetJobIDs() []string {
+ ids := make([]string, 0)
+ for id := range w.Jobs {
+ ids = append(ids, id)
+ }
+ return ids
+}
+
+var OnDecodeNodeError = func(node yaml.Node, out interface{}, err error) {
+ log.Errorf("Failed to decode node %v into %T: %v", node, out, err)
+}
+
+func decodeNode(node yaml.Node, out interface{}) bool {
+ if err := node.Decode(out); err != nil {
+ if OnDecodeNodeError != nil {
+ OnDecodeNodeError(node, out, err)
+ }
+ return false
+ }
+ return true
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-18 09:07:40 +0100