1 files changed, 360 insertions, 0 deletions
diff --git a/vendor/github.com/hashicorp/terraform/terraform/resource.go b/vendor/github.com/hashicorp/terraform/terraform/resource.go
new file mode 100644
index 00000000..0acf0beb
--- /dev/null
+++ b/vendor/github.com/hashicorp/terraform/terraform/resource.go
@@ -0,0 +1,360 @@
+package terraform
+
+import (
+	"fmt"
+	"reflect"
+	"sort"
+	"strconv"
+	"strings"
+
+	"github.com/hashicorp/terraform/config"
+	"github.com/mitchellh/copystructure"
+	"github.com/mitchellh/reflectwalk"
+)
+
+// ResourceProvisionerConfig is used to pair a provisioner
+// with its provided configuration. This allows us to use singleton
+// instances of each ResourceProvisioner and to keep the relevant
+// configuration instead of instantiating a new Provisioner for each
+// resource.
+type ResourceProvisionerConfig struct {
+	Type        string
+	Provisioner ResourceProvisioner
+	Config      *ResourceConfig
+	RawConfig   *config.RawConfig
+	ConnInfo    *config.RawConfig
+}
+
+// Resource encapsulates a resource, its configuration, its provider,
+// its current state, and potentially a desired diff from the state it
+// wants to reach.
+type Resource struct {
+	// These are all used by the new EvalNode stuff.
+	Name       string
+	Type       string
+	CountIndex int
+
+	// These aren't really used anymore anywhere, but we keep them around
+	// since we haven't done a proper cleanup yet.
+	Id           string
+	Info         *InstanceInfo
+	Config       *ResourceConfig
+	Dependencies []string
+	Diff         *InstanceDiff
+	Provider     ResourceProvider
+	State        *InstanceState
+	Provisioners []*ResourceProvisionerConfig
+	Flags        ResourceFlag
+}
+
+// ResourceKind specifies what kind of instance we're working with, whether
+// its a primary instance, a tainted instance, or an orphan.
+type ResourceFlag byte
+
+// InstanceInfo is used to hold information about the instance and/or
+// resource being modified.
+type InstanceInfo struct {
+	// Id is a unique name to represent this instance. This is not related
+	// to InstanceState.ID in any way.
+	Id string
+
+	// ModulePath is the complete path of the module containing this
+	// instance.
+	ModulePath []string
+
+	// Type is the resource type of this instance
+	Type string
+
+	// uniqueExtra is an internal field that can be populated to supply
+	// extra metadata that is used to identify a unique instance in
+	// the graph walk. This will be appended to HumanID when uniqueId
+	// is called.
+	uniqueExtra string
+}
+
+// HumanId is a unique Id that is human-friendly and useful for UI elements.
+func (i *InstanceInfo) HumanId() string {
+	if i == nil {
+		return "<nil>"
+	}
+
+	if len(i.ModulePath) <= 1 {
+		return i.Id
+	}
+
+	return fmt.Sprintf(
+		"module.%s.%s",
+		strings.Join(i.ModulePath[1:], "."),
+		i.Id)
+}
+
+func (i *InstanceInfo) uniqueId() string {
+	prefix := i.HumanId()
+	if v := i.uniqueExtra; v != "" {
+		prefix += " " + v
+	}
+
+	return prefix
+}
+
+// ResourceConfig holds the configuration given for a resource. This is
+// done instead of a raw `map[string]interface{}` type so that rich
+// methods can be added to it to make dealing with it easier.
+type ResourceConfig struct {
+	ComputedKeys []string
+	Raw          map[string]interface{}
+	Config       map[string]interface{}
+
+	raw *config.RawConfig
+}
+
+// NewResourceConfig creates a new ResourceConfig from a config.RawConfig.
+func NewResourceConfig(c *config.RawConfig) *ResourceConfig {
+	result := &ResourceConfig{raw: c}
+	result.interpolateForce()
+	return result
+}
+
+// DeepCopy performs a deep copy of the configuration. This makes it safe
+// to modify any of the structures that are part of the resource config without
+// affecting the original configuration.
+func (c *ResourceConfig) DeepCopy() *ResourceConfig {
+	// DeepCopying a nil should return a nil to avoid panics
+	if c == nil {
+		return nil
+	}
+
+	// Copy, this will copy all the exported attributes
+	copy, err := copystructure.Config{Lock: true}.Copy(c)
+	if err != nil {
+		panic(err)
+	}
+
+	// Force the type
+	result := copy.(*ResourceConfig)
+
+	// For the raw configuration, we can just use its own copy method
+	result.raw = c.raw.Copy()
+
+	return result
+}
+
+// Equal checks the equality of two resource configs.
+func (c *ResourceConfig) Equal(c2 *ResourceConfig) bool {
+	// If either are nil, then they're only equal if they're both nil
+	if c == nil || c2 == nil {
+		return c == c2
+	}
+
+	// Sort the computed keys so they're deterministic
+	sort.Strings(c.ComputedKeys)
+	sort.Strings(c2.ComputedKeys)
+
+	// Two resource configs if their exported properties are equal.
+	// We don't compare "raw" because it is never used again after
+	// initialization and for all intents and purposes they are equal
+	// if the exported properties are equal.
+	check := [][2]interface{}{
+		{c.ComputedKeys, c2.ComputedKeys},
+		{c.Raw, c2.Raw},
+		{c.Config, c2.Config},
+	}
+	for _, pair := range check {
+		if !reflect.DeepEqual(pair[0], pair[1]) {
+			return false
+		}
+	}
+
+	return true
+}
+
+// CheckSet checks that the given list of configuration keys is
+// properly set. If not, errors are returned for each unset key.
+//
+// This is useful to be called in the Validate method of a ResourceProvider.
+func (c *ResourceConfig) CheckSet(keys []string) []error {
+	var errs []error
+
+	for _, k := range keys {
+		if !c.IsSet(k) {
+			errs = append(errs, fmt.Errorf("%s must be set", k))
+		}
+	}
+
+	return errs
+}
+
+// Get looks up a configuration value by key and returns the value.
+//
+// The second return value is true if the get was successful. Get will
+// return the raw value if the key is computed, so you should pair this
+// with IsComputed.
+func (c *ResourceConfig) Get(k string) (interface{}, bool) {
+	// We aim to get a value from the configuration. If it is computed,
+	// then we return the pure raw value.
+	source := c.Config
+	if c.IsComputed(k) {
+		source = c.Raw
+	}
+
+	return c.get(k, source)
+}
+
+// GetRaw looks up a configuration value by key and returns the value,
+// from the raw, uninterpolated config.
+//
+// The second return value is true if the get was successful. Get will
+// not succeed if the value is being computed.
+func (c *ResourceConfig) GetRaw(k string) (interface{}, bool) {
+	return c.get(k, c.Raw)
+}
+
+// IsComputed returns whether the given key is computed or not.
+func (c *ResourceConfig) IsComputed(k string) bool {
+	// The next thing we do is check the config if we get a computed
+	// value out of it.
+	v, ok := c.get(k, c.Config)
+	if !ok {
+		return false
+	}
+
+	// If value is nil, then it isn't computed
+	if v == nil {
+		return false
+	}
+
+	// Test if the value contains an unknown value
+	var w unknownCheckWalker
+	if err := reflectwalk.Walk(v, &w); err != nil {
+		panic(err)
+	}
+
+	return w.Unknown
+}
+
+// IsSet checks if the key in the configuration is set. A key is set if
+// it has a value or the value is being computed (is unknown currently).
+//
+// This function should be used rather than checking the keys of the
+// raw configuration itself, since a key may be omitted from the raw
+// configuration if it is being computed.
+func (c *ResourceConfig) IsSet(k string) bool {
+	if c == nil {
+		return false
+	}
+
+	if c.IsComputed(k) {
+		return true
+	}
+
+	if _, ok := c.Get(k); ok {
+		return true
+	}
+
+	return false
+}
+
+func (c *ResourceConfig) get(
+	k string, raw map[string]interface{}) (interface{}, bool) {
+	parts := strings.Split(k, ".")
+	if len(parts) == 1 && parts[0] == "" {
+		parts = nil
+	}
+
+	var current interface{} = raw
+	var previous interface{} = nil
+	for i, part := range parts {
+		if current == nil {
+			return nil, false
+		}
+
+		cv := reflect.ValueOf(current)
+		switch cv.Kind() {
+		case reflect.Map:
+			previous = current
+			v := cv.MapIndex(reflect.ValueOf(part))
+			if !v.IsValid() {
+				if i > 0 && i != (len(parts)-1) {
+					tryKey := strings.Join(parts[i:], ".")
+					v := cv.MapIndex(reflect.ValueOf(tryKey))
+					if !v.IsValid() {
+						return nil, false
+					}
+
+					return v.Interface(), true
+				}
+
+				return nil, false
+			}
+
+			current = v.Interface()
+		case reflect.Slice:
+			previous = current
+
+			if part == "#" {
+				// If any value in a list is computed, this whole thing
+				// is computed and we can't read any part of it.
+				for i := 0; i < cv.Len(); i++ {
+					if v := cv.Index(i).Interface(); v == unknownValue() {
+						return v, true
+					}
+				}
+
+				current = cv.Len()
+			} else {
+				i, err := strconv.ParseInt(part, 0, 0)
+				if err != nil {
+					return nil, false
+				}
+				if i >= int64(cv.Len()) {
+					return nil, false
+				}
+				current = cv.Index(int(i)).Interface()
+			}
+		case reflect.String:
+			// This happens when map keys contain "." and have a common
+			// prefix so were split as path components above.
+			actualKey := strings.Join(parts[i-1:], ".")
+			if prevMap, ok := previous.(map[string]interface{}); ok {
+				v, ok := prevMap[actualKey]
+				return v, ok
+			}
+
+			return nil, false
+		default:
+			panic(fmt.Sprintf("Unknown kind: %s", cv.Kind()))
+		}
+	}
+
+	return current, true
+}
+
+// interpolateForce is a temporary thing. We want to get rid of interpolate
+// above and likewise this, but it can only be done after the f-ast-graph
+// refactor is complete.
+func (c *ResourceConfig) interpolateForce() {
+	if c.raw == nil {
+		var err error
+		c.raw, err = config.NewRawConfig(make(map[string]interface{}))
+		if err != nil {
+			panic(err)
+		}
+	}
+
+	c.ComputedKeys = c.raw.UnknownKeys()
+	c.Raw = c.raw.RawMap()
+	c.Config = c.raw.Config()
+}
+
+// unknownCheckWalker
+type unknownCheckWalker struct {
+	Unknown bool
+}
+
+func (w *unknownCheckWalker) Primitive(v reflect.Value) error {
+	if v.Interface() == unknownValue() {
+		w.Unknown = true
+	}
+
+	return nil
+}