func parseProject(result *File, obj *hclobj.Object) error {
if obj.Len() > 1 {
return fmt.Errorf("only one 'project' block allowed")
}
// Check for invalid keys
valid := []string{"name", "infrastructure"}
if err := checkHCLKeys(obj, valid); err != nil {
return multierror.Prefix(err, "project:")
}
var m map[string]interface{}
if err := hcl.DecodeObject(&m, obj); err != nil {
return err
}
// Parse the project
var proj Project
result.Project = &proj
if err := mapstructure.WeakDecode(m, &proj); err != nil {
return err
}
return nil
}
func parseUpdate(result *structs.UpdateStrategy, obj *hclobj.Object) error {
if obj.Len() > 1 {
return fmt.Errorf("only one 'update' block allowed per job")
}
for _, o := range obj.Elem(false) {
var m map[string]interface{}
if err := hcl.DecodeObject(&m, o); err != nil {
return err
}
for _, key := range []string{"stagger", "Stagger"} {
if raw, ok := m[key]; ok {
switch v := raw.(type) {
case string:
dur, err := time.ParseDuration(v)
if err != nil {
return fmt.Errorf("invalid stagger time '%s'", raw)
}
m[key] = dur
case int:
m[key] = time.Duration(v) * time.Second
default:
return fmt.Errorf("invalid type for stagger time '%s'",
raw)
}
}
}
if err := mapstructure.WeakDecode(m, result); err != nil {
return err
}
}
return nil
}
func parseUpdate(result *structs.UpdateStrategy, obj *hclobj.Object) error {
if obj.Len() > 1 {
return fmt.Errorf("only one 'update' block allowed per job")
}
for _, o := range obj.Elem(false) {
var m map[string]interface{}
if err := hcl.DecodeObject(&m, o); err != nil {
return err
}
for _, key := range []string{"stagger", "Stagger"} {
if raw, ok := m[key]; ok {
staggerTime, err := toDuration(raw)
if err != nil {
return fmt.Errorf("Invalid stagger time: %v", err)
}
m[key] = staggerTime
}
}
if err := mapstructure.WeakDecode(m, result); err != nil {
return err
}
}
return nil
}
func parseResources(result *structs.Resources, obj *hclobj.Object) error {
if obj.Len() > 1 {
return fmt.Errorf("only one 'resource' block allowed per task")
}
for _, o := range obj.Elem(false) {
var m map[string]interface{}
if err := hcl.DecodeObject(&m, o); err != nil {
return err
}
delete(m, "network")
if err := mapstructure.WeakDecode(m, result); err != nil {
return err
}
// Parse the network resources
if o := o.Get("network", false); o != nil {
if o.Len() > 1 {
return fmt.Errorf("only one 'network' resource allowed")
}
var r structs.NetworkResource
var m map[string]interface{}
if err := hcl.DecodeObject(&m, o); err != nil {
return err
}
if err := mapstructure.WeakDecode(m, &r); err != nil {
return err
}
// Keep track of labels we've already seen so we can ensure there
// are no collisions when we turn them into environment variables.
// lowercase:NomalCase so we can get the first for the error message
seenLabel := map[string]string{}
for _, label := range r.DynamicPorts {
if !reDynamicPorts.MatchString(label) {
return errDynamicPorts
}
first, seen := seenLabel[strings.ToLower(label)]
if seen {
return fmt.Errorf("Found a port label collision: `%s` overlaps with previous `%s`", label, first)
} else {
seenLabel[strings.ToLower(label)] = label
}
}
result.Networks = []*structs.NetworkResource{&r}
}
}
return nil
}
func parseJob(jobNode *hclObj.Object, errors *multierror.Error) JobConfig {
config := JobConfig{}
if jobNode.Len() > 1 {
errors = multierror.Append(errors, fmt.Errorf("job was specified more than once"))
} else {
if jobNode.Type != hclObj.ValueTypeObject {
errors = multierror.Append(errors, fmt.Errorf("job was specified as an invalid type - expected object, found %s", jobNode.Type))
} else {
config.Name = jobNode.Key
config.Trigger = parseJobTrigger(jobNode, errors)
config.Exec = parseExec(jobNode, errors)
}
}
return config
}
func parseApplication(result *File, obj *hclobj.Object) error {
if obj.Len() > 1 {
return fmt.Errorf("only one 'application' block allowed")
}
// Check for invalid keys
valid := []string{"name", "type", "dependency"}
if err := checkHCLKeys(obj, valid); err != nil {
return multierror.Prefix(err, "application:")
}
var m map[string]interface{}
if err := hcl.DecodeObject(&m, obj); err != nil {
return err
}
var app Application
result.Application = &app
return mapstructure.WeakDecode(m, &app)
}
func loadProvisionersHcl(os *hclobj.Object, connInfo map[string]interface{}) ([]*Provisioner, error) {
pos := make([]*hclobj.Object, 0, int(os.Len()))
// Accumulate all the actual provisioner configuration objects. We
// have to iterate twice here:
//
// 1. The first iteration is of the list of `provisioner` blocks.
// 2. The second iteration is of the dictionary within the
// provisioner which will have only one element which is the
// type of provisioner to use along with tis config.
//
// In JSON it looks kind of like this:
//
// [
// {
// "shell": {
// ...
// }
// }
// ]
//
for _, o1 := range os.Elem(false) {
for _, o2 := range o1.Elem(true) {
pos = append(pos, o2)
}
}
// Short-circuit if there are no items
if len(pos) == 0 {
return nil, nil
}
result := make([]*Provisioner, 0, len(pos))
for _, po := range pos {
var config map[string]interface{}
if err := hcl.DecodeObject(&config, po); err != nil {
return nil, err
}
// Delete the "connection" section, handle seperately
delete(config, "connection")
rawConfig, err := NewRawConfig(config)
if err != nil {
return nil, err
}
// Check if we have a provisioner-level connection
// block that overrides the resource-level
var subConnInfo map[string]interface{}
if o := po.Get("connection", false); o != nil {
err := hcl.DecodeObject(&subConnInfo, o)
if err != nil {
return nil, err
}
}
// Inherit from the resource connInfo any keys
// that are not explicitly overriden.
if connInfo != nil && subConnInfo != nil {
for k, v := range connInfo {
if _, ok := subConnInfo[k]; !ok {
subConnInfo[k] = v
}
}
} else if subConnInfo == nil {
subConnInfo = connInfo
}
// Parse the connInfo
connRaw, err := NewRawConfig(subConnInfo)
if err != nil {
return nil, err
}
result = append(result, &Provisioner{
Type: po.Key,
RawConfig: rawConfig,
ConnInfo: connRaw,
})
}
return result, nil
}
func parseJob(result *structs.Job, obj *hclobj.Object) error {
if obj.Len() > 1 {
return fmt.Errorf("only one 'job' block allowed")
}
// Get our job object
obj = obj.Elem(true)[0]
// Decode the full thing into a map[string]interface for ease
var m map[string]interface{}
if err := hcl.DecodeObject(&m, obj); err != nil {
return err
}
delete(m, "constraint")
delete(m, "meta")
delete(m, "update")
// Set the ID and name to the object key
result.ID = obj.Key
result.Name = obj.Key
// Defaults
result.Priority = 50
result.Region = "global"
result.Type = "service"
// Decode the rest
if err := mapstructure.WeakDecode(m, result); err != nil {
return err
}
// Parse constraints
if o := obj.Get("constraint", false); o != nil {
if err := parseConstraints(&result.Constraints, o); err != nil {
return err
}
}
// If we have an update strategy, then parse that
if o := obj.Get("update", false); o != nil {
if err := parseUpdate(&result.Update, o); err != nil {
return err
}
}
// Parse out meta fields. These are in HCL as a list so we need
// to iterate over them and merge them.
if metaO := obj.Get("meta", false); metaO != nil {
for _, o := range metaO.Elem(false) {
var m map[string]interface{}
if err := hcl.DecodeObject(&m, o); err != nil {
return err
}
if err := mapstructure.WeakDecode(m, &result.Meta); err != nil {
return err
}
}
}
// If we have tasks outside, do those
if o := obj.Get("task", false); o != nil {
var tasks []*structs.Task
if err := parseTasks(&tasks, o); err != nil {
return err
}
result.TaskGroups = make([]*structs.TaskGroup, len(tasks), len(tasks)*2)
for i, t := range tasks {
result.TaskGroups[i] = &structs.TaskGroup{
Name: t.Name,
Count: 1,
Tasks: []*structs.Task{t},
}
}
}
// Parse the task groups
if o := obj.Get("group", false); o != nil {
if err := parseGroups(result, o); err != nil {
return fmt.Errorf("error parsing 'group': %s", err)
}
}
return nil
}
func (d *decoder) decodeInterface(name string, o *hcl.Object, result reflect.Value) error {
var set reflect.Value
redecode := true
switch o.Type {
case hcl.ValueTypeObject:
// If we're at the root or we're directly within a slice, then we
// decode objects into map[string]interface{}, otherwise we decode
// them into lists.
if len(d.stack) == 0 || d.stack[len(d.stack)-1] == reflect.Slice {
var temp map[string]interface{}
tempVal := reflect.ValueOf(temp)
result := reflect.MakeMap(
reflect.MapOf(
reflect.TypeOf(""),
tempVal.Type().Elem()))
set = result
} else {
var temp []map[string]interface{}
tempVal := reflect.ValueOf(temp)
result := reflect.MakeSlice(
reflect.SliceOf(tempVal.Type().Elem()), 0, int(o.Len()))
set = result
}
case hcl.ValueTypeList:
var temp []interface{}
tempVal := reflect.ValueOf(temp)
result := reflect.MakeSlice(
reflect.SliceOf(tempVal.Type().Elem()), 0, 0)
set = result
case hcl.ValueTypeBool:
var result bool
set = reflect.Indirect(reflect.New(reflect.TypeOf(result)))
case hcl.ValueTypeFloat:
var result float64
set = reflect.Indirect(reflect.New(reflect.TypeOf(result)))
case hcl.ValueTypeInt:
var result int
set = reflect.Indirect(reflect.New(reflect.TypeOf(result)))
case hcl.ValueTypeString:
set = reflect.Indirect(reflect.New(reflect.TypeOf("")))
default:
return fmt.Errorf(
"%s: cannot decode into interface: %T",
name, o)
}
// Set the result to what its supposed to be, then reset
// result so we don't reflect into this method anymore.
result.Set(set)
if redecode {
// Revisit the node so that we can use the newly instantiated
// thing and populate it.
if err := d.decode(name, o, result); err != nil {
return err
}
}
return nil
}
