1 files changed, 129 insertions, 0 deletions
diff --git a/vendor/github.com/google/jsonapi/runtime.go b/vendor/github.com/google/jsonapi/runtime.go
new file mode 100644
index 0000000..db2d9f2
--- /dev/null
+++ b/vendor/github.com/google/jsonapi/runtime.go
@@ -0,0 +1,129 @@
+package jsonapi
+
+import (
+	"crypto/rand"
+	"fmt"
+	"io"
+	"reflect"
+	"time"
+)
+
+// Event represents a lifecycle event in the marshaling or unmarshalling
+// process.
+type Event int
+
+const (
+	// UnmarshalStart is the Event that is sent when deserialization of a payload
+	// begins.
+	UnmarshalStart Event = iota
+
+	// UnmarshalStop is the Event that is sent when deserialization of a payload
+	// ends.
+	UnmarshalStop
+
+	// MarshalStart is the Event that is sent sent when serialization of a payload
+	// begins.
+	MarshalStart
+
+	// MarshalStop is the Event that is sent sent when serialization of a payload
+	// ends.
+	MarshalStop
+)
+
+// Runtime has the same methods as jsonapi package for serialization and
+// deserialization but also has a ctx, a map[string]interface{} for storing
+// state, designed for instrumenting serialization timings.
+type Runtime struct {
+	ctx map[string]interface{}
+}
+
+// Events is the func type that provides the callback for handling event timings.
+type Events func(*Runtime, Event, string, time.Duration)
+
+// Instrumentation is a a global Events variable.  This is the handler for all
+// timing events.
+var Instrumentation Events
+
+// NewRuntime creates a Runtime for use in an application.
+func NewRuntime() *Runtime { return &Runtime{make(map[string]interface{})} }
+
+// WithValue adds custom state variables to the runtime context.
+func (r *Runtime) WithValue(key string, value interface{}) *Runtime {
+	r.ctx[key] = value
+
+	return r
+}
+
+// Value returns a state variable in the runtime context.
+func (r *Runtime) Value(key string) interface{} {
+	return r.ctx[key]
+}
+
+// Instrument is deprecated.
+func (r *Runtime) Instrument(key string) *Runtime {
+	return r.WithValue("instrument", key)
+}
+
+func (r *Runtime) shouldInstrument() bool {
+	return Instrumentation != nil
+}
+
+// UnmarshalPayload has docs in request.go for UnmarshalPayload.
+func (r *Runtime) UnmarshalPayload(reader io.Reader, model interface{}) error {
+	return r.instrumentCall(UnmarshalStart, UnmarshalStop, func() error {
+		return UnmarshalPayload(reader, model)
+	})
+}
+
+// UnmarshalManyPayload has docs in request.go for UnmarshalManyPayload.
+func (r *Runtime) UnmarshalManyPayload(reader io.Reader, kind reflect.Type) (elems []interface{}, err error) {
+	r.instrumentCall(UnmarshalStart, UnmarshalStop, func() error {
+		elems, err = UnmarshalManyPayload(reader, kind)
+		return err
+	})
+
+	return
+}
+
+// MarshalPayload has docs in response.go for MarshalPayload.
+func (r *Runtime) MarshalPayload(w io.Writer, model interface{}) error {
+	return r.instrumentCall(MarshalStart, MarshalStop, func() error {
+		return MarshalPayload(w, model)
+	})
+}
+
+func (r *Runtime) instrumentCall(start Event, stop Event, c func() error) error {
+	if !r.shouldInstrument() {
+		return c()
+	}
+
+	instrumentationGUID, err := newUUID()
+	if err != nil {
+		return err
+	}
+
+	begin := time.Now()
+	Instrumentation(r, start, instrumentationGUID, time.Duration(0))
+
+	if err := c(); err != nil {
+		return err
+	}
+
+	diff := time.Duration(time.Now().UnixNano() - begin.UnixNano())
+	Instrumentation(r, stop, instrumentationGUID, diff)
+
+	return nil
+}
+
+// citation: http://play.golang.org/p/4FkNSiUDMg
+func newUUID() (string, error) {
+	uuid := make([]byte, 16)
+	if _, err := io.ReadFull(rand.Reader, uuid); err != nil {
+		return "", err
+	}
+	// variant bits; see section 4.1.1
+	uuid[8] = uuid[8]&^0xc0 | 0x80
+	// version 4 (pseudo-random); see section 4.1.3
+	uuid[6] = uuid[6]&^0xf0 | 0x40
+	return fmt.Sprintf("%x-%x-%x-%x-%x", uuid[0:4], uuid[4:6], uuid[6:8], uuid[8:10], uuid[10:]), nil
+}