示例#1
0
// WriteGeoPoint writes a GeoPoint to the buffer.
func WriteGeoPoint(buf Buffer, gp ds.GeoPoint) (err error) {
	defer recoverTo(&err)
	_, e := cmpbin.WriteFloat64(buf, gp.Lat)
	panicIf(e)
	_, e = cmpbin.WriteFloat64(buf, gp.Lng)
	return e
}
示例#2
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// writeIndexValue writes the index value of v to buf.
//
// v may be one of the return types from ds.Property's GetIndexTypeAndValue
// method.
func writeIndexValue(buf Buffer, context KeyContext, v interface{}) (err error) {
	switch t := v.(type) {
	case nil:
	case bool:
		b := byte(0)
		if t {
			b = 1
		}
		err = buf.WriteByte(b)
	case int64:
		_, err = cmpbin.WriteInt(buf, t)
	case float64:
		_, err = cmpbin.WriteFloat64(buf, t)
	case string:
		_, err = cmpbin.WriteString(buf, t)
	case []byte:
		_, err = cmpbin.WriteBytes(buf, t)
	case ds.GeoPoint:
		err = WriteGeoPoint(buf, t)
	case *ds.Key:
		err = WriteKey(buf, context, t)

	default:
		err = fmt.Errorf("unsupported type: %T", t)
	}
	return
}
示例#3
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// WriteProperty writes a Property to the buffer. `context` behaves the same
// way that it does for WriteKey, but only has an effect if `p` contains a
// Key as its Value.
func WriteProperty(buf Buffer, context KeyContext, p ds.Property) (err error) {
	defer recoverTo(&err)
	typb := byte(p.Type())
	if p.IndexSetting() != ds.NoIndex {
		typb |= 0x80
	}
	panicIf(buf.WriteByte(typb))
	switch p.Type() {
	case ds.PTNull:
	case ds.PTBool:
		b := p.Value().(bool)
		if b {
			err = buf.WriteByte(1)
		} else {
			err = buf.WriteByte(0)
		}
	case ds.PTInt:
		_, err = cmpbin.WriteInt(buf, p.Value().(int64))
	case ds.PTFloat:
		_, err = cmpbin.WriteFloat64(buf, p.Value().(float64))
	case ds.PTString:
		_, err = cmpbin.WriteString(buf, p.Value().(string))
	case ds.PTBytes:
		_, err = cmpbin.WriteBytes(buf, p.Value().([]byte))
	case ds.PTTime:
		err = WriteTime(buf, p.Value().(time.Time))
	case ds.PTGeoPoint:
		err = WriteGeoPoint(buf, p.Value().(ds.GeoPoint))
	case ds.PTKey:
		err = WriteKey(buf, context, p.Value().(ds.Key))
	case ds.PTBlobKey:
		_, err = cmpbin.WriteString(buf, string(p.Value().(blobstore.Key)))
	}
	return
}
示例#4
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// cat is a convenience method for concatenating anything with an underlying
// byte representation into a single []byte.
func cat(bytethings ...interface{}) []byte {
	err := error(nil)
	buf := &bytes.Buffer{}
	for _, thing := range bytethings {
		switch x := thing.(type) {
		case int64:
			_, err = cmpbin.WriteInt(buf, x)
		case int:
			_, err = cmpbin.WriteInt(buf, int64(x))
		case uint64:
			_, err = cmpbin.WriteUint(buf, x)
		case uint:
			_, err = cmpbin.WriteUint(buf, uint64(x))
		case float64:
			_, err = cmpbin.WriteFloat64(buf, x)
		case byte:
			err = buf.WriteByte(x)
		case ds.PropertyType:
			err = buf.WriteByte(byte(x))
		case string:
			_, err = cmpbin.WriteString(buf, x)
		case []byte:
			_, err = buf.Write(x)
		case time.Time:
			err = serialize.WriteTime(buf, x)
		case *ds.Key:
			err = serialize.WriteKey(buf, serialize.WithoutContext, x)
		case *ds.IndexDefinition:
			err = serialize.WriteIndexDefinition(buf, *x)
		case ds.Property:
			err = serialize.WriteProperty(buf, serialize.WithoutContext, x)
		default:
			panic(fmt.Errorf("I don't know how to deal with %T: %#v", thing, thing))
		}
		die(err)
	}
	ret := buf.Bytes()
	if ret == nil {
		ret = []byte{}
	}
	return ret
}
示例#5
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func TestSerializationReadMisc(t *testing.T) {
	t.Parallel()

	Convey("Misc Serialization tests", t, func() {
		Convey("GeoPoint", func() {
			buf := mkBuf(nil)
			cmpbin.WriteFloat64(buf, 10)
			cmpbin.WriteFloat64(buf, 20)
			So(string(ToBytes(ds.GeoPoint{Lat: 10, Lng: 20})), ShouldEqual, buf.String())
		})

		Convey("IndexColumn", func() {
			buf := mkBuf(nil)
			buf.WriteByte(1)
			cmpbin.WriteString(buf, "hi")
			So(string(ToBytes(ds.IndexColumn{Property: "hi", Direction: ds.DESCENDING})),
				ShouldEqual, buf.String())
		})

		Convey("KeyTok", func() {
			buf := mkBuf(nil)
			cmpbin.WriteString(buf, "foo")
			buf.WriteByte(byte(ds.PTInt))
			cmpbin.WriteInt(buf, 20)
			So(string(ToBytes(ds.KeyTok{Kind: "foo", IntID: 20})),
				ShouldEqual, buf.String())
		})

		Convey("Property", func() {
			buf := mkBuf(nil)
			buf.WriteByte(0x80 | byte(ds.PTString))
			cmpbin.WriteString(buf, "nerp")
			So(string(ToBytes(mp("nerp"))),
				ShouldEqual, buf.String())
		})

		Convey("Time", func() {
			tp := mp(time.Now().UTC())
			So(string(ToBytes(tp.Value())), ShouldEqual, string(ToBytes(tp)[1:]))
		})

		Convey("Bad ToBytes", func() {
			So(func() { ToBytes(100.7) }, ShouldPanic)
			So(func() { ToBytesWithContext(100.7) }, ShouldPanic)
		})

		Convey("ReadKey", func() {
			Convey("good cases", func() {
				Convey("w/ ctx decodes normally w/ ctx", func() {
					k := mkKey("aid", "ns", "knd", "yo", "other", 10)
					data := ToBytesWithContext(k)
					dk, err := ReadKey(mkBuf(data), WithContext, "", "")
					So(err, ShouldBeNil)
					So(dk, ShouldEqualKey, k)
				})
				Convey("w/ ctx decodes normally w/o ctx", func() {
					k := mkKey("aid", "ns", "knd", "yo", "other", 10)
					data := ToBytesWithContext(k)
					dk, err := ReadKey(mkBuf(data), WithoutContext, "spam", "nerd")
					So(err, ShouldBeNil)
					So(dk, ShouldEqualKey, mkKey("spam", "nerd", "knd", "yo", "other", 10))
				})
				Convey("w/o ctx decodes normally w/ ctx", func() {
					k := mkKey("aid", "ns", "knd", "yo", "other", 10)
					data := ToBytes(k)
					dk, err := ReadKey(mkBuf(data), WithContext, "spam", "nerd")
					So(err, ShouldBeNil)
					So(dk, ShouldEqualKey, mkKey("", "", "knd", "yo", "other", 10))
				})
				Convey("w/o ctx decodes normally w/o ctx", func() {
					k := mkKey("aid", "ns", "knd", "yo", "other", 10)
					data := ToBytes(k)
					dk, err := ReadKey(mkBuf(data), WithoutContext, "spam", "nerd")
					So(err, ShouldBeNil)
					So(dk, ShouldEqualKey, mkKey("spam", "nerd", "knd", "yo", "other", 10))
				})
				Convey("IntIDs always sort before StringIDs", func() {
					// -1 writes as almost all 1's in the first byte under cmpbin, even
					// though it's technically not a valid key.
					k := mkKey("aid", "ns", "knd", -1)
					data := ToBytes(k)

					k = mkKey("aid", "ns", "knd", "hat")
					data2 := ToBytes(k)

					So(string(data), ShouldBeLessThan, string(data2))
				})
			})

			Convey("err cases", func() {
				buf := mkBuf(nil)
				Convey("nil", func() {
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldEqual, io.EOF)
				})
				Convey("str", func() {
					buf.WriteString("sup")
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldErrLike, "expected actualCtx")
				})
				Convey("truncated 1", func() {
					buf.WriteByte(1) // actualCtx == 1
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldEqual, io.EOF)
				})
				Convey("truncated 2", func() {
					buf.WriteByte(1) // actualCtx == 1
					cmpbin.WriteString(buf, "aid")
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldEqual, io.EOF)
				})
				Convey("truncated 3", func() {
					buf.WriteByte(1) // actualCtx == 1
					cmpbin.WriteString(buf, "aid")
					cmpbin.WriteString(buf, "ns")
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldEqual, io.EOF)
				})
				Convey("huge key", func() {
					buf.WriteByte(1) // actualCtx == 1
					cmpbin.WriteString(buf, "aid")
					cmpbin.WriteString(buf, "ns")
					for i := 1; i < 60; i++ {
						buf.WriteByte(1)
						WriteKeyTok(buf, ds.KeyTok{Kind: "sup", IntID: int64(i)})
					}
					buf.WriteByte(0)
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldErrLike, "huge key")
				})
				Convey("insufficient tokens", func() {
					buf.WriteByte(1) // actualCtx == 1
					cmpbin.WriteString(buf, "aid")
					cmpbin.WriteString(buf, "ns")
					cmpbin.WriteUint(buf, 2)
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldEqual, io.EOF)
				})
				Convey("partial token 1", func() {
					buf.WriteByte(1) // actualCtx == 1
					cmpbin.WriteString(buf, "aid")
					cmpbin.WriteString(buf, "ns")
					buf.WriteByte(1)
					cmpbin.WriteString(buf, "hi")
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldEqual, io.EOF)
				})
				Convey("partial token 2", func() {
					buf.WriteByte(1) // actualCtx == 1
					cmpbin.WriteString(buf, "aid")
					cmpbin.WriteString(buf, "ns")
					buf.WriteByte(1)
					cmpbin.WriteString(buf, "hi")
					buf.WriteByte(byte(ds.PTString))
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldEqual, io.EOF)
				})
				Convey("bad token (invalid type)", func() {
					buf.WriteByte(1) // actualCtx == 1
					cmpbin.WriteString(buf, "aid")
					cmpbin.WriteString(buf, "ns")
					buf.WriteByte(1)
					cmpbin.WriteString(buf, "hi")
					buf.WriteByte(byte(ds.PTBlobKey))
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldErrLike, "invalid type PTBlobKey")
				})
				Convey("bad token (invalid IntID)", func() {
					buf.WriteByte(1) // actualCtx == 1
					cmpbin.WriteString(buf, "aid")
					cmpbin.WriteString(buf, "ns")
					buf.WriteByte(1)
					cmpbin.WriteString(buf, "hi")
					buf.WriteByte(byte(ds.PTInt))
					cmpbin.WriteInt(buf, -2)
					_, err := ReadKey(buf, WithContext, "", "")
					So(err, ShouldErrLike, "zero/negative")
				})
			})
		})

		Convey("ReadGeoPoint", func() {
			buf := mkBuf(nil)
			Convey("trunc 1", func() {
				_, err := ReadGeoPoint(buf)
				So(err, ShouldEqual, io.EOF)
			})
			Convey("trunc 2", func() {
				cmpbin.WriteFloat64(buf, 100)
				_, err := ReadGeoPoint(buf)
				So(err, ShouldEqual, io.EOF)
			})
			Convey("invalid", func() {
				cmpbin.WriteFloat64(buf, 100)
				cmpbin.WriteFloat64(buf, 1000)
				_, err := ReadGeoPoint(buf)
				So(err, ShouldErrLike, "invalid GeoPoint")
			})
		})

		Convey("WriteTime", func() {
			Convey("in non-UTC!", func() {
				pst, err := time.LoadLocation("America/Los_Angeles")
				So(err, ShouldBeNil)
				So(func() {
					WriteTime(mkBuf(nil), time.Now().In(pst))
				}, ShouldPanic)
			})
		})

		Convey("ReadTime", func() {
			Convey("trunc 1", func() {
				_, err := ReadTime(mkBuf(nil))
				So(err, ShouldEqual, io.EOF)
			})
		})

		Convey("ReadProperty", func() {
			buf := mkBuf(nil)
			Convey("trunc 1", func() {
				p, err := ReadProperty(buf, WithContext, "", "")
				So(err, ShouldEqual, io.EOF)
				So(p.Type(), ShouldEqual, ds.PTNull)
				So(p.Value(), ShouldBeNil)
			})
			Convey("trunc (PTBytes)", func() {
				buf.WriteByte(byte(ds.PTBytes))
				_, err := ReadProperty(buf, WithContext, "", "")
				So(err, ShouldEqual, io.EOF)
			})
			Convey("trunc (PTBlobKey)", func() {
				buf.WriteByte(byte(ds.PTBlobKey))
				_, err := ReadProperty(buf, WithContext, "", "")
				So(err, ShouldEqual, io.EOF)
			})
			Convey("invalid type", func() {
				buf.WriteByte(byte(ds.PTUnknown + 1))
				_, err := ReadProperty(buf, WithContext, "", "")
				So(err, ShouldErrLike, "unknown type!")
			})
		})

		Convey("ReadPropertyMap", func() {
			buf := mkBuf(nil)
			Convey("trunc 1", func() {
				_, err := ReadPropertyMap(buf, WithContext, "", "")
				So(err, ShouldEqual, io.EOF)
			})
			Convey("too many rows", func() {
				cmpbin.WriteUint(buf, 1000000)
				_, err := ReadPropertyMap(buf, WithContext, "", "")
				So(err, ShouldErrLike, "huge number of rows")
			})
			Convey("trunc 2", func() {
				cmpbin.WriteUint(buf, 10)
				_, err := ReadPropertyMap(buf, WithContext, "", "")
				So(err, ShouldEqual, io.EOF)
			})
			Convey("trunc 3", func() {
				cmpbin.WriteUint(buf, 10)
				cmpbin.WriteString(buf, "ohai")
				_, err := ReadPropertyMap(buf, WithContext, "", "")
				So(err, ShouldEqual, io.EOF)
			})
			Convey("too many values", func() {
				cmpbin.WriteUint(buf, 10)
				cmpbin.WriteString(buf, "ohai")
				cmpbin.WriteUint(buf, 100000)
				_, err := ReadPropertyMap(buf, WithContext, "", "")
				So(err, ShouldErrLike, "huge number of properties")
			})
			Convey("trunc 4", func() {
				cmpbin.WriteUint(buf, 10)
				cmpbin.WriteString(buf, "ohai")
				cmpbin.WriteUint(buf, 10)
				_, err := ReadPropertyMap(buf, WithContext, "", "")
				So(err, ShouldEqual, io.EOF)
			})
		})

		Convey("IndexDefinition", func() {
			id := ds.IndexDefinition{Kind: "kind"}
			data := ToBytes(*id.PrepForIdxTable())
			newID, err := ReadIndexDefinition(mkBuf(data))
			So(err, ShouldBeNil)
			So(newID.Flip(), ShouldResemble, id.Normalize())

			id.SortBy = append(id.SortBy, ds.IndexColumn{Property: "prop"})
			data = ToBytes(*id.PrepForIdxTable())
			newID, err = ReadIndexDefinition(mkBuf(data))
			So(err, ShouldBeNil)
			So(newID.Flip(), ShouldResemble, id.Normalize())

			id.SortBy = append(id.SortBy, ds.IndexColumn{Property: "other", Direction: ds.DESCENDING})
			id.Ancestor = true
			data = ToBytes(*id.PrepForIdxTable())
			newID, err = ReadIndexDefinition(mkBuf(data))
			So(err, ShouldBeNil)
			So(newID.Flip(), ShouldResemble, id.Normalize())

			// invalid
			id.SortBy = append(id.SortBy, ds.IndexColumn{Property: "", Direction: ds.DESCENDING})
			data = ToBytes(*id.PrepForIdxTable())
			newID, err = ReadIndexDefinition(mkBuf(data))
			So(err, ShouldBeNil)
			So(newID.Flip(), ShouldResemble, id.Normalize())

			Convey("too many", func() {
				id := ds.IndexDefinition{Kind: "wat"}
				for i := 0; i < MaxIndexColumns+1; i++ {
					id.SortBy = append(id.SortBy, ds.IndexColumn{Property: "Hi", Direction: ds.ASCENDING})
				}
				data := ToBytes(*id.PrepForIdxTable())
				newID, err = ReadIndexDefinition(mkBuf(data))
				So(err, ShouldErrLike, "over 64 sort orders")
			})
		})
	})
}
示例#6
0
func wf(w io.Writer, v float64) int {
	ret, err := cmpbin.WriteFloat64(w, v)
	die(err)
	return ret
}