--- /dev/null
+// The config package is responsible for loading and validating the
+// configuration.
+package config
+
+import (
+ "fmt"
+ "regexp"
+ "strconv"
+ "strings"
+
+ "github.com/hashicorp/go-multierror"
+ "github.com/hashicorp/hil"
+ "github.com/hashicorp/hil/ast"
+ "github.com/hashicorp/terraform/helper/hilmapstructure"
+ "github.com/mitchellh/reflectwalk"
+)
+
+// NameRegexp is the regular expression that all names (modules, providers,
+// resources, etc.) must follow.
+var NameRegexp = regexp.MustCompile(`(?i)\A[A-Z0-9_][A-Z0-9\-\_]*\z`)
+
+// Config is the configuration that comes from loading a collection
+// of Terraform templates.
+type Config struct {
+ // Dir is the path to the directory where this configuration was
+ // loaded from. If it is blank, this configuration wasn't loaded from
+ // any meaningful directory.
+ Dir string
+
+ Terraform *Terraform
+ Atlas *AtlasConfig
+ Modules []*Module
+ ProviderConfigs []*ProviderConfig
+ Resources []*Resource
+ Variables []*Variable
+ Outputs []*Output
+
+ // The fields below can be filled in by loaders for validation
+ // purposes.
+ unknownKeys []string
+}
+
+// AtlasConfig is the configuration for building in HashiCorp's Atlas.
+type AtlasConfig struct {
+ Name string
+ Include []string
+ Exclude []string
+}
+
+// Module is a module used within a configuration.
+//
+// This does not represent a module itself, this represents a module
+// call-site within an existing configuration.
+type Module struct {
+ Name string
+ Source string
+ RawConfig *RawConfig
+}
+
+// ProviderConfig is the configuration for a resource provider.
+//
+// For example, Terraform needs to set the AWS access keys for the AWS
+// resource provider.
+type ProviderConfig struct {
+ Name string
+ Alias string
+ RawConfig *RawConfig
+}
+
+// A resource represents a single Terraform resource in the configuration.
+// A Terraform resource is something that supports some or all of the
+// usual "create, read, update, delete" operations, depending on
+// the given Mode.
+type Resource struct {
+ Mode ResourceMode // which operations the resource supports
+ Name string
+ Type string
+ RawCount *RawConfig
+ RawConfig *RawConfig
+ Provisioners []*Provisioner
+ Provider string
+ DependsOn []string
+ Lifecycle ResourceLifecycle
+}
+
+// Copy returns a copy of this Resource. Helpful for avoiding shared
+// config pointers across multiple pieces of the graph that need to do
+// interpolation.
+func (r *Resource) Copy() *Resource {
+ n := &Resource{
+ Mode: r.Mode,
+ Name: r.Name,
+ Type: r.Type,
+ RawCount: r.RawCount.Copy(),
+ RawConfig: r.RawConfig.Copy(),
+ Provisioners: make([]*Provisioner, 0, len(r.Provisioners)),
+ Provider: r.Provider,
+ DependsOn: make([]string, len(r.DependsOn)),
+ Lifecycle: *r.Lifecycle.Copy(),
+ }
+ for _, p := range r.Provisioners {
+ n.Provisioners = append(n.Provisioners, p.Copy())
+ }
+ copy(n.DependsOn, r.DependsOn)
+ return n
+}
+
+// ResourceLifecycle is used to store the lifecycle tuning parameters
+// to allow customized behavior
+type ResourceLifecycle struct {
+ CreateBeforeDestroy bool `mapstructure:"create_before_destroy"`
+ PreventDestroy bool `mapstructure:"prevent_destroy"`
+ IgnoreChanges []string `mapstructure:"ignore_changes"`
+}
+
+// Copy returns a copy of this ResourceLifecycle
+func (r *ResourceLifecycle) Copy() *ResourceLifecycle {
+ n := &ResourceLifecycle{
+ CreateBeforeDestroy: r.CreateBeforeDestroy,
+ PreventDestroy: r.PreventDestroy,
+ IgnoreChanges: make([]string, len(r.IgnoreChanges)),
+ }
+ copy(n.IgnoreChanges, r.IgnoreChanges)
+ return n
+}
+
+// Provisioner is a configured provisioner step on a resource.
+type Provisioner struct {
+ Type string
+ RawConfig *RawConfig
+ ConnInfo *RawConfig
+
+ When ProvisionerWhen
+ OnFailure ProvisionerOnFailure
+}
+
+// Copy returns a copy of this Provisioner
+func (p *Provisioner) Copy() *Provisioner {
+ return &Provisioner{
+ Type: p.Type,
+ RawConfig: p.RawConfig.Copy(),
+ ConnInfo: p.ConnInfo.Copy(),
+ When: p.When,
+ OnFailure: p.OnFailure,
+ }
+}
+
+// Variable is a variable defined within the configuration.
+type Variable struct {
+ Name string
+ DeclaredType string `mapstructure:"type"`
+ Default interface{}
+ Description string
+}
+
+// Output is an output defined within the configuration. An output is
+// resulting data that is highlighted by Terraform when finished. An
+// output marked Sensitive will be output in a masked form following
+// application, but will still be available in state.
+type Output struct {
+ Name string
+ DependsOn []string
+ Description string
+ Sensitive bool
+ RawConfig *RawConfig
+}
+
+// VariableType is the type of value a variable is holding, and returned
+// by the Type() function on variables.
+type VariableType byte
+
+const (
+ VariableTypeUnknown VariableType = iota
+ VariableTypeString
+ VariableTypeList
+ VariableTypeMap
+)
+
+func (v VariableType) Printable() string {
+ switch v {
+ case VariableTypeString:
+ return "string"
+ case VariableTypeMap:
+ return "map"
+ case VariableTypeList:
+ return "list"
+ default:
+ return "unknown"
+ }
+}
+
+// ProviderConfigName returns the name of the provider configuration in
+// the given mapping that maps to the proper provider configuration
+// for this resource.
+func ProviderConfigName(t string, pcs []*ProviderConfig) string {
+ lk := ""
+ for _, v := range pcs {
+ k := v.Name
+ if strings.HasPrefix(t, k) && len(k) > len(lk) {
+ lk = k
+ }
+ }
+
+ return lk
+}
+
+// A unique identifier for this module.
+func (r *Module) Id() string {
+ return fmt.Sprintf("%s", r.Name)
+}
+
+// Count returns the count of this resource.
+func (r *Resource) Count() (int, error) {
+ raw := r.RawCount.Value()
+ count, ok := r.RawCount.Value().(string)
+ if !ok {
+ return 0, fmt.Errorf(
+ "expected count to be a string or int, got %T", raw)
+ }
+
+ v, err := strconv.ParseInt(count, 0, 0)
+ if err != nil {
+ return 0, err
+ }
+
+ return int(v), nil
+}
+
+// A unique identifier for this resource.
+func (r *Resource) Id() string {
+ switch r.Mode {
+ case ManagedResourceMode:
+ return fmt.Sprintf("%s.%s", r.Type, r.Name)
+ case DataResourceMode:
+ return fmt.Sprintf("data.%s.%s", r.Type, r.Name)
+ default:
+ panic(fmt.Errorf("unknown resource mode %s", r.Mode))
+ }
+}
+
+// Validate does some basic semantic checking of the configuration.
+func (c *Config) Validate() error {
+ if c == nil {
+ return nil
+ }
+
+ var errs []error
+
+ for _, k := range c.unknownKeys {
+ errs = append(errs, fmt.Errorf(
+ "Unknown root level key: %s", k))
+ }
+
+ // Validate the Terraform config
+ if tf := c.Terraform; tf != nil {
+ errs = append(errs, c.Terraform.Validate()...)
+ }
+
+ vars := c.InterpolatedVariables()
+ varMap := make(map[string]*Variable)
+ for _, v := range c.Variables {
+ if _, ok := varMap[v.Name]; ok {
+ errs = append(errs, fmt.Errorf(
+ "Variable '%s': duplicate found. Variable names must be unique.",
+ v.Name))
+ }
+
+ varMap[v.Name] = v
+ }
+
+ for k, _ := range varMap {
+ if !NameRegexp.MatchString(k) {
+ errs = append(errs, fmt.Errorf(
+ "variable %q: variable name must match regular expresion %s",
+ k, NameRegexp))
+ }
+ }
+
+ for _, v := range c.Variables {
+ if v.Type() == VariableTypeUnknown {
+ errs = append(errs, fmt.Errorf(
+ "Variable '%s': must be a string or a map",
+ v.Name))
+ continue
+ }
+
+ interp := false
+ fn := func(n ast.Node) (interface{}, error) {
+ // LiteralNode is a literal string (outside of a ${ ... } sequence).
+ // interpolationWalker skips most of these. but in particular it
+ // visits those that have escaped sequences (like $${foo}) as a
+ // signal that *some* processing is required on this string. For
+ // our purposes here though, this is fine and not an interpolation.
+ if _, ok := n.(*ast.LiteralNode); !ok {
+ interp = true
+ }
+ return "", nil
+ }
+
+ w := &interpolationWalker{F: fn}
+ if v.Default != nil {
+ if err := reflectwalk.Walk(v.Default, w); err == nil {
+ if interp {
+ errs = append(errs, fmt.Errorf(
+ "Variable '%s': cannot contain interpolations",
+ v.Name))
+ }
+ }
+ }
+ }
+
+ // Check for references to user variables that do not actually
+ // exist and record those errors.
+ for source, vs := range vars {
+ for _, v := range vs {
+ uv, ok := v.(*UserVariable)
+ if !ok {
+ continue
+ }
+
+ if _, ok := varMap[uv.Name]; !ok {
+ errs = append(errs, fmt.Errorf(
+ "%s: unknown variable referenced: '%s'. define it with 'variable' blocks",
+ source,
+ uv.Name))
+ }
+ }
+ }
+
+ // Check that all count variables are valid.
+ for source, vs := range vars {
+ for _, rawV := range vs {
+ switch v := rawV.(type) {
+ case *CountVariable:
+ if v.Type == CountValueInvalid {
+ errs = append(errs, fmt.Errorf(
+ "%s: invalid count variable: %s",
+ source,
+ v.FullKey()))
+ }
+ case *PathVariable:
+ if v.Type == PathValueInvalid {
+ errs = append(errs, fmt.Errorf(
+ "%s: invalid path variable: %s",
+ source,
+ v.FullKey()))
+ }
+ }
+ }
+ }
+
+ // Check that providers aren't declared multiple times.
+ providerSet := make(map[string]struct{})
+ for _, p := range c.ProviderConfigs {
+ name := p.FullName()
+ if _, ok := providerSet[name]; ok {
+ errs = append(errs, fmt.Errorf(
+ "provider.%s: declared multiple times, you can only declare a provider once",
+ name))
+ continue
+ }
+
+ providerSet[name] = struct{}{}
+ }
+
+ // Check that all references to modules are valid
+ modules := make(map[string]*Module)
+ dupped := make(map[string]struct{})
+ for _, m := range c.Modules {
+ // Check for duplicates
+ if _, ok := modules[m.Id()]; ok {
+ if _, ok := dupped[m.Id()]; !ok {
+ dupped[m.Id()] = struct{}{}
+
+ errs = append(errs, fmt.Errorf(
+ "%s: module repeated multiple times",
+ m.Id()))
+ }
+
+ // Already seen this module, just skip it
+ continue
+ }
+
+ modules[m.Id()] = m
+
+ // Check that the source has no interpolations
+ rc, err := NewRawConfig(map[string]interface{}{
+ "root": m.Source,
+ })
+ if err != nil {
+ errs = append(errs, fmt.Errorf(
+ "%s: module source error: %s",
+ m.Id(), err))
+ } else if len(rc.Interpolations) > 0 {
+ errs = append(errs, fmt.Errorf(
+ "%s: module source cannot contain interpolations",
+ m.Id()))
+ }
+
+ // Check that the name matches our regexp
+ if !NameRegexp.Match([]byte(m.Name)) {
+ errs = append(errs, fmt.Errorf(
+ "%s: module name can only contain letters, numbers, "+
+ "dashes, and underscores",
+ m.Id()))
+ }
+
+ // Check that the configuration can all be strings, lists or maps
+ raw := make(map[string]interface{})
+ for k, v := range m.RawConfig.Raw {
+ var strVal string
+ if err := hilmapstructure.WeakDecode(v, &strVal); err == nil {
+ raw[k] = strVal
+ continue
+ }
+
+ var mapVal map[string]interface{}
+ if err := hilmapstructure.WeakDecode(v, &mapVal); err == nil {
+ raw[k] = mapVal
+ continue
+ }
+
+ var sliceVal []interface{}
+ if err := hilmapstructure.WeakDecode(v, &sliceVal); err == nil {
+ raw[k] = sliceVal
+ continue
+ }
+
+ errs = append(errs, fmt.Errorf(
+ "%s: variable %s must be a string, list or map value",
+ m.Id(), k))
+ }
+
+ // Check for invalid count variables
+ for _, v := range m.RawConfig.Variables {
+ switch v.(type) {
+ case *CountVariable:
+ errs = append(errs, fmt.Errorf(
+ "%s: count variables are only valid within resources", m.Name))
+ case *SelfVariable:
+ errs = append(errs, fmt.Errorf(
+ "%s: self variables are only valid within resources", m.Name))
+ }
+ }
+
+ // Update the raw configuration to only contain the string values
+ m.RawConfig, err = NewRawConfig(raw)
+ if err != nil {
+ errs = append(errs, fmt.Errorf(
+ "%s: can't initialize configuration: %s",
+ m.Id(), err))
+ }
+ }
+ dupped = nil
+
+ // Check that all variables for modules reference modules that
+ // exist.
+ for source, vs := range vars {
+ for _, v := range vs {
+ mv, ok := v.(*ModuleVariable)
+ if !ok {
+ continue
+ }
+
+ if _, ok := modules[mv.Name]; !ok {
+ errs = append(errs, fmt.Errorf(
+ "%s: unknown module referenced: %s",
+ source,
+ mv.Name))
+ }
+ }
+ }
+
+ // Check that all references to resources are valid
+ resources := make(map[string]*Resource)
+ dupped = make(map[string]struct{})
+ for _, r := range c.Resources {
+ if _, ok := resources[r.Id()]; ok {
+ if _, ok := dupped[r.Id()]; !ok {
+ dupped[r.Id()] = struct{}{}
+
+ errs = append(errs, fmt.Errorf(
+ "%s: resource repeated multiple times",
+ r.Id()))
+ }
+ }
+
+ resources[r.Id()] = r
+ }
+ dupped = nil
+
+ // Validate resources
+ for n, r := range resources {
+ // Verify count variables
+ for _, v := range r.RawCount.Variables {
+ switch v.(type) {
+ case *CountVariable:
+ errs = append(errs, fmt.Errorf(
+ "%s: resource count can't reference count variable: %s",
+ n,
+ v.FullKey()))
+ case *SimpleVariable:
+ errs = append(errs, fmt.Errorf(
+ "%s: resource count can't reference variable: %s",
+ n,
+ v.FullKey()))
+
+ // Good
+ case *ModuleVariable:
+ case *ResourceVariable:
+ case *TerraformVariable:
+ case *UserVariable:
+
+ default:
+ errs = append(errs, fmt.Errorf(
+ "Internal error. Unknown type in count var in %s: %T",
+ n, v))
+ }
+ }
+
+ // Interpolate with a fixed number to verify that its a number.
+ r.RawCount.interpolate(func(root ast.Node) (interface{}, error) {
+ // Execute the node but transform the AST so that it returns
+ // a fixed value of "5" for all interpolations.
+ result, err := hil.Eval(
+ hil.FixedValueTransform(
+ root, &ast.LiteralNode{Value: "5", Typex: ast.TypeString}),
+ nil)
+ if err != nil {
+ return "", err
+ }
+
+ return result.Value, nil
+ })
+ _, err := strconv.ParseInt(r.RawCount.Value().(string), 0, 0)
+ if err != nil {
+ errs = append(errs, fmt.Errorf(
+ "%s: resource count must be an integer",
+ n))
+ }
+ r.RawCount.init()
+
+ // Validate DependsOn
+ errs = append(errs, c.validateDependsOn(n, r.DependsOn, resources, modules)...)
+
+ // Verify provisioners
+ for _, p := range r.Provisioners {
+ // This validation checks that there are now splat variables
+ // referencing ourself. This currently is not allowed.
+
+ for _, v := range p.ConnInfo.Variables {
+ rv, ok := v.(*ResourceVariable)
+ if !ok {
+ continue
+ }
+
+ if rv.Multi && rv.Index == -1 && rv.Type == r.Type && rv.Name == r.Name {
+ errs = append(errs, fmt.Errorf(
+ "%s: connection info cannot contain splat variable "+
+ "referencing itself", n))
+ break
+ }
+ }
+
+ for _, v := range p.RawConfig.Variables {
+ rv, ok := v.(*ResourceVariable)
+ if !ok {
+ continue
+ }
+
+ if rv.Multi && rv.Index == -1 && rv.Type == r.Type && rv.Name == r.Name {
+ errs = append(errs, fmt.Errorf(
+ "%s: connection info cannot contain splat variable "+
+ "referencing itself", n))
+ break
+ }
+ }
+
+ // Check for invalid when/onFailure values, though this should be
+ // picked up by the loader we check here just in case.
+ if p.When == ProvisionerWhenInvalid {
+ errs = append(errs, fmt.Errorf(
+ "%s: provisioner 'when' value is invalid", n))
+ }
+ if p.OnFailure == ProvisionerOnFailureInvalid {
+ errs = append(errs, fmt.Errorf(
+ "%s: provisioner 'on_failure' value is invalid", n))
+ }
+ }
+
+ // Verify ignore_changes contains valid entries
+ for _, v := range r.Lifecycle.IgnoreChanges {
+ if strings.Contains(v, "*") && v != "*" {
+ errs = append(errs, fmt.Errorf(
+ "%s: ignore_changes does not support using a partial string "+
+ "together with a wildcard: %s", n, v))
+ }
+ }
+
+ // Verify ignore_changes has no interpolations
+ rc, err := NewRawConfig(map[string]interface{}{
+ "root": r.Lifecycle.IgnoreChanges,
+ })
+ if err != nil {
+ errs = append(errs, fmt.Errorf(
+ "%s: lifecycle ignore_changes error: %s",
+ n, err))
+ } else if len(rc.Interpolations) > 0 {
+ errs = append(errs, fmt.Errorf(
+ "%s: lifecycle ignore_changes cannot contain interpolations",
+ n))
+ }
+
+ // If it is a data source then it can't have provisioners
+ if r.Mode == DataResourceMode {
+ if _, ok := r.RawConfig.Raw["provisioner"]; ok {
+ errs = append(errs, fmt.Errorf(
+ "%s: data sources cannot have provisioners",
+ n))
+ }
+ }
+ }
+
+ for source, vs := range vars {
+ for _, v := range vs {
+ rv, ok := v.(*ResourceVariable)
+ if !ok {
+ continue
+ }
+
+ id := rv.ResourceId()
+ if _, ok := resources[id]; !ok {
+ errs = append(errs, fmt.Errorf(
+ "%s: unknown resource '%s' referenced in variable %s",
+ source,
+ id,
+ rv.FullKey()))
+ continue
+ }
+ }
+ }
+
+ // Check that all outputs are valid
+ {
+ found := make(map[string]struct{})
+ for _, o := range c.Outputs {
+ // Verify the output is new
+ if _, ok := found[o.Name]; ok {
+ errs = append(errs, fmt.Errorf(
+ "%s: duplicate output. output names must be unique.",
+ o.Name))
+ continue
+ }
+ found[o.Name] = struct{}{}
+
+ var invalidKeys []string
+ valueKeyFound := false
+ for k := range o.RawConfig.Raw {
+ if k == "value" {
+ valueKeyFound = true
+ continue
+ }
+ if k == "sensitive" {
+ if sensitive, ok := o.RawConfig.config[k].(bool); ok {
+ if sensitive {
+ o.Sensitive = true
+ }
+ continue
+ }
+
+ errs = append(errs, fmt.Errorf(
+ "%s: value for 'sensitive' must be boolean",
+ o.Name))
+ continue
+ }
+ if k == "description" {
+ if desc, ok := o.RawConfig.config[k].(string); ok {
+ o.Description = desc
+ continue
+ }
+
+ errs = append(errs, fmt.Errorf(
+ "%s: value for 'description' must be string",
+ o.Name))
+ continue
+ }
+ invalidKeys = append(invalidKeys, k)
+ }
+ if len(invalidKeys) > 0 {
+ errs = append(errs, fmt.Errorf(
+ "%s: output has invalid keys: %s",
+ o.Name, strings.Join(invalidKeys, ", ")))
+ }
+ if !valueKeyFound {
+ errs = append(errs, fmt.Errorf(
+ "%s: output is missing required 'value' key", o.Name))
+ }
+
+ for _, v := range o.RawConfig.Variables {
+ if _, ok := v.(*CountVariable); ok {
+ errs = append(errs, fmt.Errorf(
+ "%s: count variables are only valid within resources", o.Name))
+ }
+ }
+ }
+ }
+
+ // Check that all variables are in the proper context
+ for source, rc := range c.rawConfigs() {
+ walker := &interpolationWalker{
+ ContextF: c.validateVarContextFn(source, &errs),
+ }
+ if err := reflectwalk.Walk(rc.Raw, walker); err != nil {
+ errs = append(errs, fmt.Errorf(
+ "%s: error reading config: %s", source, err))
+ }
+ }
+
+ // Validate the self variable
+ for source, rc := range c.rawConfigs() {
+ // Ignore provisioners. This is a pretty brittle way to do this,
+ // but better than also repeating all the resources.
+ if strings.Contains(source, "provision") {
+ continue
+ }
+
+ for _, v := range rc.Variables {
+ if _, ok := v.(*SelfVariable); ok {
+ errs = append(errs, fmt.Errorf(
+ "%s: cannot contain self-reference %s", source, v.FullKey()))
+ }
+ }
+ }
+
+ if len(errs) > 0 {
+ return &multierror.Error{Errors: errs}
+ }
+
+ return nil
+}
+
+// InterpolatedVariables is a helper that returns a mapping of all the interpolated
+// variables within the configuration. This is used to verify references
+// are valid in the Validate step.
+func (c *Config) InterpolatedVariables() map[string][]InterpolatedVariable {
+ result := make(map[string][]InterpolatedVariable)
+ for source, rc := range c.rawConfigs() {
+ for _, v := range rc.Variables {
+ result[source] = append(result[source], v)
+ }
+ }
+ return result
+}
+
+// rawConfigs returns all of the RawConfigs that are available keyed by
+// a human-friendly source.
+func (c *Config) rawConfigs() map[string]*RawConfig {
+ result := make(map[string]*RawConfig)
+ for _, m := range c.Modules {
+ source := fmt.Sprintf("module '%s'", m.Name)
+ result[source] = m.RawConfig
+ }
+
+ for _, pc := range c.ProviderConfigs {
+ source := fmt.Sprintf("provider config '%s'", pc.Name)
+ result[source] = pc.RawConfig
+ }
+
+ for _, rc := range c.Resources {
+ source := fmt.Sprintf("resource '%s'", rc.Id())
+ result[source+" count"] = rc.RawCount
+ result[source+" config"] = rc.RawConfig
+
+ for i, p := range rc.Provisioners {
+ subsource := fmt.Sprintf(
+ "%s provisioner %s (#%d)",
+ source, p.Type, i+1)
+ result[subsource] = p.RawConfig
+ }
+ }
+
+ for _, o := range c.Outputs {
+ source := fmt.Sprintf("output '%s'", o.Name)
+ result[source] = o.RawConfig
+ }
+
+ return result
+}
+
+func (c *Config) validateVarContextFn(
+ source string, errs *[]error) interpolationWalkerContextFunc {
+ return func(loc reflectwalk.Location, node ast.Node) {
+ // If we're in a slice element, then its fine, since you can do
+ // anything in there.
+ if loc == reflectwalk.SliceElem {
+ return
+ }
+
+ // Otherwise, let's check if there is a splat resource variable
+ // at the top level in here. We do this by doing a transform that
+ // replaces everything with a noop node unless its a variable
+ // access or concat. This should turn the AST into a flat tree
+ // of Concat(Noop, ...). If there are any variables left that are
+ // multi-access, then its still broken.
+ node = node.Accept(func(n ast.Node) ast.Node {
+ // If it is a concat or variable access, we allow it.
+ switch n.(type) {
+ case *ast.Output:
+ return n
+ case *ast.VariableAccess:
+ return n
+ }
+
+ // Otherwise, noop
+ return &noopNode{}
+ })
+
+ vars, err := DetectVariables(node)
+ if err != nil {
+ // Ignore it since this will be caught during parse. This
+ // actually probably should never happen by the time this
+ // is called, but its okay.
+ return
+ }
+
+ for _, v := range vars {
+ rv, ok := v.(*ResourceVariable)
+ if !ok {
+ return
+ }
+
+ if rv.Multi && rv.Index == -1 {
+ *errs = append(*errs, fmt.Errorf(
+ "%s: use of the splat ('*') operator must be wrapped in a list declaration",
+ source))
+ }
+ }
+ }
+}
+
+func (c *Config) validateDependsOn(
+ n string,
+ v []string,
+ resources map[string]*Resource,
+ modules map[string]*Module) []error {
+ // Verify depends on points to resources that all exist
+ var errs []error
+ for _, d := range v {
+ // Check if we contain interpolations
+ rc, err := NewRawConfig(map[string]interface{}{
+ "value": d,
+ })
+ if err == nil && len(rc.Variables) > 0 {
+ errs = append(errs, fmt.Errorf(
+ "%s: depends on value cannot contain interpolations: %s",
+ n, d))
+ continue
+ }
+
+ // If it is a module, verify it is a module
+ if strings.HasPrefix(d, "module.") {
+ name := d[len("module."):]
+ if _, ok := modules[name]; !ok {
+ errs = append(errs, fmt.Errorf(
+ "%s: resource depends on non-existent module '%s'",
+ n, name))
+ }
+
+ continue
+ }
+
+ // Check resources
+ if _, ok := resources[d]; !ok {
+ errs = append(errs, fmt.Errorf(
+ "%s: resource depends on non-existent resource '%s'",
+ n, d))
+ }
+ }
+
+ return errs
+}
+
+func (m *Module) mergerName() string {
+ return m.Id()
+}
+
+func (m *Module) mergerMerge(other merger) merger {
+ m2 := other.(*Module)
+
+ result := *m
+ result.Name = m2.Name
+ result.RawConfig = result.RawConfig.merge(m2.RawConfig)
+
+ if m2.Source != "" {
+ result.Source = m2.Source
+ }
+
+ return &result
+}
+
+func (o *Output) mergerName() string {
+ return o.Name
+}
+
+func (o *Output) mergerMerge(m merger) merger {
+ o2 := m.(*Output)
+
+ result := *o
+ result.Name = o2.Name
+ result.Description = o2.Description
+ result.RawConfig = result.RawConfig.merge(o2.RawConfig)
+ result.Sensitive = o2.Sensitive
+ result.DependsOn = o2.DependsOn
+
+ return &result
+}
+
+func (c *ProviderConfig) GoString() string {
+ return fmt.Sprintf("*%#v", *c)
+}
+
+func (c *ProviderConfig) FullName() string {
+ if c.Alias == "" {
+ return c.Name
+ }
+
+ return fmt.Sprintf("%s.%s", c.Name, c.Alias)
+}
+
+func (c *ProviderConfig) mergerName() string {
+ return c.Name
+}
+
+func (c *ProviderConfig) mergerMerge(m merger) merger {
+ c2 := m.(*ProviderConfig)
+
+ result := *c
+ result.Name = c2.Name
+ result.RawConfig = result.RawConfig.merge(c2.RawConfig)
+
+ if c2.Alias != "" {
+ result.Alias = c2.Alias
+ }
+
+ return &result
+}
+
+func (r *Resource) mergerName() string {
+ return r.Id()
+}
+
+func (r *Resource) mergerMerge(m merger) merger {
+ r2 := m.(*Resource)
+
+ result := *r
+ result.Mode = r2.Mode
+ result.Name = r2.Name
+ result.Type = r2.Type
+ result.RawConfig = result.RawConfig.merge(r2.RawConfig)
+
+ if r2.RawCount.Value() != "1" {
+ result.RawCount = r2.RawCount
+ }
+
+ if len(r2.Provisioners) > 0 {
+ result.Provisioners = r2.Provisioners
+ }
+
+ return &result
+}
+
+// Merge merges two variables to create a new third variable.
+func (v *Variable) Merge(v2 *Variable) *Variable {
+ // Shallow copy the variable
+ result := *v
+
+ // The names should be the same, but the second name always wins.
+ result.Name = v2.Name
+
+ if v2.DeclaredType != "" {
+ result.DeclaredType = v2.DeclaredType
+ }
+ if v2.Default != nil {
+ result.Default = v2.Default
+ }
+ if v2.Description != "" {
+ result.Description = v2.Description
+ }
+
+ return &result
+}
+
+var typeStringMap = map[string]VariableType{
+ "string": VariableTypeString,
+ "map": VariableTypeMap,
+ "list": VariableTypeList,
+}
+
+// Type returns the type of variable this is.
+func (v *Variable) Type() VariableType {
+ if v.DeclaredType != "" {
+ declaredType, ok := typeStringMap[v.DeclaredType]
+ if !ok {
+ return VariableTypeUnknown
+ }
+
+ return declaredType
+ }
+
+ return v.inferTypeFromDefault()
+}
+
+// ValidateTypeAndDefault ensures that default variable value is compatible
+// with the declared type (if one exists), and that the type is one which is
+// known to Terraform
+func (v *Variable) ValidateTypeAndDefault() error {
+ // If an explicit type is declared, ensure it is valid
+ if v.DeclaredType != "" {
+ if _, ok := typeStringMap[v.DeclaredType]; !ok {
+ validTypes := []string{}
+ for k := range typeStringMap {
+ validTypes = append(validTypes, k)
+ }
+ return fmt.Errorf(
+ "Variable '%s' type must be one of [%s] - '%s' is not a valid type",
+ v.Name,
+ strings.Join(validTypes, ", "),
+ v.DeclaredType,
+ )
+ }
+ }
+
+ if v.DeclaredType == "" || v.Default == nil {
+ return nil
+ }
+
+ if v.inferTypeFromDefault() != v.Type() {
+ return fmt.Errorf("'%s' has a default value which is not of type '%s' (got '%s')",
+ v.Name, v.DeclaredType, v.inferTypeFromDefault().Printable())
+ }
+
+ return nil
+}
+
+func (v *Variable) mergerName() string {
+ return v.Name
+}
+
+func (v *Variable) mergerMerge(m merger) merger {
+ return v.Merge(m.(*Variable))
+}
+
+// Required tests whether a variable is required or not.
+func (v *Variable) Required() bool {
+ return v.Default == nil
+}
+
+// inferTypeFromDefault contains the logic for the old method of inferring
+// variable types - we can also use this for validating that the declared
+// type matches the type of the default value
+func (v *Variable) inferTypeFromDefault() VariableType {
+ if v.Default == nil {
+ return VariableTypeString
+ }
+
+ var s string
+ if err := hilmapstructure.WeakDecode(v.Default, &s); err == nil {
+ v.Default = s
+ return VariableTypeString
+ }
+
+ var m map[string]interface{}
+ if err := hilmapstructure.WeakDecode(v.Default, &m); err == nil {
+ v.Default = m
+ return VariableTypeMap
+ }
+
+ var l []interface{}
+ if err := hilmapstructure.WeakDecode(v.Default, &l); err == nil {
+ v.Default = l
+ return VariableTypeList
+ }
+
+ return VariableTypeUnknown
+}
+
+func (m ResourceMode) Taintable() bool {
+ switch m {
+ case ManagedResourceMode:
+ return true
+ case DataResourceMode:
+ return false
+ default:
+ panic(fmt.Errorf("unsupported ResourceMode value %s", m))
+ }
+}
projects / github / fretlink / terraform-provider-statuscake.git / blobdiff