tidwall 6257ddba78 Faster point in polygon / GeoJSON updates
The big change is that the GeoJSON package has been completely
rewritten to fix a few of geometry calculation bugs, increase
performance, and to better follow the GeoJSON spec RFC 7946.

GeoJSON updates

- A LineString now requires at least two points.
- All json members, even foreign, now persist with the object.
- The bbox member persists too but is no longer used for geometry
  calculations. This is change in behavior. Previously Tile38 would
  treat the bbox as the object's physical rectangle.
- Corrections to geometry intersects and within calculations.

Faster spatial queries

- The performance of Point-in-polygon and object intersect operations
  are greatly improved for complex polygons and line strings. It went
  from O(n) to roughly O(log n).
- The same for all collection types with many children, including
  FeatureCollection, GeometryCollection, MultiPoint, MultiLineString,
  and MultiPolygon.

Codebase changes

- The pkg directory has been renamed to internal
- The GeoJSON internal package has been moved to a seperate repo at
  https://github.com/tidwall/geojson. It's now vendored.

Please look out for higher memory usage for datasets using complex
shapes. A complex shape is one that has 64 or more points. For these
shapes it's expected that there will be increase of least 54 bytes per
point.
2018-10-13 04:30:48 -07:00

124 lines
3.4 KiB
Go

// Copyright 2015-2018 The NATS Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package test
import (
"errors"
"fmt"
"runtime"
"strings"
"time"
"github.com/nats-io/gnatsd/server"
"github.com/nats-io/go-nats"
gnatsd "github.com/nats-io/gnatsd/test"
)
// So that we can pass tests and benchmarks...
type tLogger interface {
Fatalf(format string, args ...interface{})
Errorf(format string, args ...interface{})
}
// TestLogger
type TestLogger tLogger
// Dumb wait program to sync on callbacks, etc... Will timeout
func Wait(ch chan bool) error {
return WaitTime(ch, 5*time.Second)
}
// Wait for a chan with a timeout.
func WaitTime(ch chan bool, timeout time.Duration) error {
select {
case <-ch:
return nil
case <-time.After(timeout):
}
return errors.New("timeout")
}
func stackFatalf(t tLogger, f string, args ...interface{}) {
lines := make([]string, 0, 32)
msg := fmt.Sprintf(f, args...)
lines = append(lines, msg)
// Generate the Stack of callers: Skip us and verify* frames.
for i := 1; true; i++ {
_, file, line, ok := runtime.Caller(i)
if !ok {
break
}
msg := fmt.Sprintf("%d - %s:%d", i, file, line)
lines = append(lines, msg)
}
t.Fatalf("%s", strings.Join(lines, "\n"))
}
////////////////////////////////////////////////////////////////////////////////
// Creating client connections
////////////////////////////////////////////////////////////////////////////////
// NewDefaultConnection
func NewDefaultConnection(t tLogger) *nats.Conn {
return NewConnection(t, nats.DefaultPort)
}
// NewConnection forms connection on a given port.
func NewConnection(t tLogger, port int) *nats.Conn {
url := fmt.Sprintf("nats://localhost:%d", port)
nc, err := nats.Connect(url)
if err != nil {
t.Fatalf("Failed to create default connection: %v\n", err)
return nil
}
return nc
}
// NewEConn
func NewEConn(t tLogger) *nats.EncodedConn {
ec, err := nats.NewEncodedConn(NewDefaultConnection(t), nats.DEFAULT_ENCODER)
if err != nil {
t.Fatalf("Failed to create an encoded connection: %v\n", err)
}
return ec
}
////////////////////////////////////////////////////////////////////////////////
// Running gnatsd server in separate Go routines
////////////////////////////////////////////////////////////////////////////////
// RunDefaultServer will run a server on the default port.
func RunDefaultServer() *server.Server {
return RunServerOnPort(nats.DefaultPort)
}
// RunServerOnPort will run a server on the given port.
func RunServerOnPort(port int) *server.Server {
opts := gnatsd.DefaultTestOptions
opts.Port = port
return RunServerWithOptions(opts)
}
// RunServerWithOptions will run a server with the given options.
func RunServerWithOptions(opts server.Options) *server.Server {
return gnatsd.RunServer(&opts)
}
// RunServerWithConfig will run a server with the given configuration file.
func RunServerWithConfig(configFile string) (*server.Server, *server.Options) {
return gnatsd.RunServerWithConfig(configFile)
}