mirror of https://github.com/tidwall/tile38.git
306 lines
8.3 KiB
Go
306 lines
8.3 KiB
Go
package controller
|
|
|
|
import (
|
|
"math"
|
|
"strconv"
|
|
|
|
"github.com/tidwall/gjson"
|
|
"github.com/tidwall/tile38/controller/glob"
|
|
"github.com/tidwall/tile38/controller/server"
|
|
"github.com/tidwall/tile38/geojson"
|
|
)
|
|
|
|
var tmfmt = "2006-01-02T15:04:05.999999999Z07:00"
|
|
|
|
// FenceMatch executes a fence match returns back json messages for fence detection.
|
|
func FenceMatch(hookName string, sw *scanWriter, fence *liveFenceSwitches, details *commandDetailsT) [][]byte {
|
|
msgs := fenceMatch(hookName, sw, fence, details)
|
|
if len(fence.accept) == 0 {
|
|
return msgs
|
|
}
|
|
nmsgs := make([][]byte, 0, len(msgs))
|
|
for _, msg := range msgs {
|
|
if fence.accept[gjson.GetBytes(msg, "command").String()] {
|
|
nmsgs = append(nmsgs, msg)
|
|
}
|
|
}
|
|
return nmsgs
|
|
}
|
|
|
|
func fenceMatch(hookName string, sw *scanWriter, fence *liveFenceSwitches, details *commandDetailsT) [][]byte {
|
|
jshookName := jsonString(hookName)
|
|
jstime := jsonString(details.timestamp.Format(tmfmt))
|
|
pattern := fence.glob
|
|
if details.command == "drop" {
|
|
return [][]byte{[]byte(`{"command":"drop","hook":` + jshookName + `,"time":` + jstime + `}`)}
|
|
}
|
|
match := true
|
|
if pattern != "" && pattern != "*" {
|
|
match, _ = glob.Match(pattern, details.id)
|
|
}
|
|
if !match {
|
|
return nil
|
|
}
|
|
|
|
sw.mu.Lock()
|
|
nofields := sw.nofields
|
|
sw.mu.Unlock()
|
|
|
|
if details.obj == nil || !details.obj.IsGeometry() || (details.command == "fset" && nofields) {
|
|
return nil
|
|
}
|
|
match = false
|
|
|
|
var roamkeys, roamids []string
|
|
var roammeters []float64
|
|
detect := "outside"
|
|
if fence != nil {
|
|
if fence.roam.on {
|
|
if details.command == "set" {
|
|
// println("roam", fence.roam.key, fence.roam.id, strconv.FormatFloat(fence.roam.meters, 'f', -1, 64))
|
|
roamkeys, roamids, roammeters = fenceMatchRoam(sw.c, fence, details.key, details.id, details.obj)
|
|
}
|
|
if len(roamids) == 0 || len(roamids) != len(roamkeys) {
|
|
return nil
|
|
}
|
|
match = true
|
|
detect = "roam"
|
|
} else {
|
|
|
|
// not using roaming
|
|
match1 := fenceMatchObject(fence, details.oldObj)
|
|
match2 := fenceMatchObject(fence, details.obj)
|
|
if match1 && match2 {
|
|
match = true
|
|
detect = "inside"
|
|
} else if match1 && !match2 {
|
|
match = true
|
|
detect = "exit"
|
|
} else if !match1 && match2 {
|
|
match = true
|
|
detect = "enter"
|
|
if details.command == "fset" {
|
|
detect = "inside"
|
|
}
|
|
} else {
|
|
if details.command != "fset" {
|
|
// Maybe the old object and new object create a line that crosses the fence.
|
|
// Must detect for that possibility.
|
|
if details.oldObj != nil {
|
|
ls := geojson.LineString{
|
|
Coordinates: []geojson.Position{
|
|
details.oldObj.CalculatedPoint(),
|
|
details.obj.CalculatedPoint(),
|
|
},
|
|
}
|
|
temp := false
|
|
if fence.cmd == "within" {
|
|
// because we are testing if the line croses the area we need to use
|
|
// "intersects" instead of "within".
|
|
fence.cmd = "intersects"
|
|
temp = true
|
|
}
|
|
if fenceMatchObject(fence, ls) {
|
|
//match = true
|
|
detect = "cross"
|
|
}
|
|
if temp {
|
|
fence.cmd = "within"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if details.command == "del" {
|
|
return [][]byte{[]byte(`{"command":"del","hook":` + jshookName + `,"id":` + jsonString(details.id) + `,"time":` + jstime + `}`)}
|
|
}
|
|
if details.fmap == nil {
|
|
return nil
|
|
}
|
|
sw.mu.Lock()
|
|
sw.fmap = details.fmap
|
|
sw.fullFields = true
|
|
sw.msg.OutputType = server.JSON
|
|
sw.writeObject(details.id, details.obj, details.fields, true)
|
|
if sw.wr.Len() == 0 {
|
|
sw.mu.Unlock()
|
|
return nil
|
|
}
|
|
|
|
res := make([]byte, sw.wr.Len())
|
|
copy(res, sw.wr.Bytes())
|
|
sw.wr.Reset()
|
|
if len(res) > 0 && res[0] == ',' {
|
|
res = res[1:]
|
|
}
|
|
if sw.output == outputIDs {
|
|
res = []byte(`{"id":` + string(res) + `}`)
|
|
}
|
|
sw.mu.Unlock()
|
|
|
|
if fence.groups == nil {
|
|
fence.groups = make(map[string]string)
|
|
}
|
|
groupkey := details.key + ":" + details.id
|
|
var group string
|
|
var ok bool
|
|
if detect == "enter" {
|
|
group = bsonID()
|
|
fence.groups[groupkey] = group
|
|
} else if detect == "cross" {
|
|
group = bsonID()
|
|
delete(fence.groups, groupkey)
|
|
} else {
|
|
group, ok = fence.groups[groupkey]
|
|
if !ok {
|
|
group = bsonID()
|
|
fence.groups[groupkey] = group
|
|
}
|
|
}
|
|
|
|
jskey := jsonString(details.key)
|
|
|
|
msgs := make([][]byte, 0, 4)
|
|
if fence.detect == nil || fence.detect[detect] {
|
|
if len(res) > 0 && res[0] == '{' {
|
|
res = makemsg(details.command, group, detect, jshookName, jskey, jstime, res[1:])
|
|
}
|
|
msgs = append(msgs, res)
|
|
}
|
|
switch detect {
|
|
case "enter":
|
|
if fence.detect == nil || fence.detect["inside"] {
|
|
msgs = append(msgs, makemsg(details.command, group, "inside", jshookName, jskey, jstime, res[1:]))
|
|
}
|
|
case "exit", "cross":
|
|
if fence.detect == nil || fence.detect["outside"] {
|
|
msgs = append(msgs, makemsg(details.command, group, "outside", jshookName, jskey, jstime, res[1:]))
|
|
}
|
|
case "roam":
|
|
if len(msgs) > 0 {
|
|
var nmsgs [][]byte
|
|
msg := msgs[0][:len(msgs[0])-1]
|
|
for i, id := range roamids {
|
|
|
|
nmsg := append([]byte(nil), msg...)
|
|
nmsg = append(nmsg, `,"nearby":{"key":`...)
|
|
nmsg = append(nmsg, jsonString(roamkeys[i])...)
|
|
nmsg = append(nmsg, `,"id":`...)
|
|
nmsg = append(nmsg, jsonString(id)...)
|
|
nmsg = append(nmsg, `,"meters":`...)
|
|
nmsg = append(nmsg, strconv.FormatFloat(roammeters[i], 'f', -1, 64)...)
|
|
|
|
if fence.roam.scan != "" {
|
|
nmsg = append(nmsg, `,"scan":[`...)
|
|
|
|
func() {
|
|
sw.c.mu.Lock()
|
|
defer sw.c.mu.Unlock()
|
|
col := sw.c.getCol(roamkeys[i])
|
|
if col != nil {
|
|
obj, _, ok := col.Get(id)
|
|
if ok {
|
|
nmsg = append(nmsg, `{"id":`+jsonString(id)+`,"self":true,"object":`+obj.JSON()+`}`...)
|
|
}
|
|
pattern := id + fence.roam.scan
|
|
iterator := func(oid string, o geojson.Object, fields []float64) bool {
|
|
if oid == id {
|
|
return true
|
|
}
|
|
if matched, _ := glob.Match(pattern, oid); matched {
|
|
nmsg = append(nmsg, `,{"id":`+jsonString(oid)+`,"object":`+o.JSON()+`}`...)
|
|
}
|
|
return true
|
|
}
|
|
g := glob.Parse(pattern, false)
|
|
if g.Limits[0] == "" && g.Limits[1] == "" {
|
|
col.Scan(0, false, iterator)
|
|
} else {
|
|
col.ScanRange(0, g.Limits[0], g.Limits[1], false, iterator)
|
|
}
|
|
}
|
|
}()
|
|
nmsg = append(nmsg, ']')
|
|
}
|
|
|
|
nmsg = append(nmsg, '}')
|
|
nmsg = append(nmsg, '}')
|
|
nmsgs = append(nmsgs, nmsg)
|
|
}
|
|
msgs = nmsgs
|
|
}
|
|
}
|
|
return msgs
|
|
}
|
|
|
|
func makemsg(command, group, detect, jshookName, jskey, jstime string, tail []byte) []byte {
|
|
var buf []byte
|
|
buf = append(append(buf, `{"command":"`...), command...)
|
|
buf = append(append(buf, `","group":"`...), group...)
|
|
buf = append(append(buf, `","detect":"`...), detect...)
|
|
buf = append(append(buf, `","hook":`...), jshookName...)
|
|
buf = append(append(buf, `,"key":`...), jskey...)
|
|
buf = append(append(buf, `,"time":`...), jstime...)
|
|
buf = append(append(buf, ','), tail...)
|
|
return buf
|
|
}
|
|
|
|
func fenceMatchObject(fence *liveFenceSwitches, obj geojson.Object) bool {
|
|
if obj == nil {
|
|
return false
|
|
}
|
|
if fence.roam.on {
|
|
// we need to check this object against
|
|
return false
|
|
}
|
|
if fence.cmd == "nearby" {
|
|
return obj.Nearby(geojson.Position{X: fence.lon, Y: fence.lat, Z: 0}, fence.meters)
|
|
} else if fence.cmd == "within" {
|
|
if fence.o != nil {
|
|
return obj.Within(fence.o)
|
|
}
|
|
return obj.WithinBBox(geojson.BBox{
|
|
Min: geojson.Position{X: fence.minLon, Y: fence.minLat, Z: 0},
|
|
Max: geojson.Position{X: fence.maxLon, Y: fence.maxLat, Z: 0},
|
|
})
|
|
} else if fence.cmd == "intersects" {
|
|
if fence.o != nil {
|
|
return obj.Intersects(fence.o)
|
|
}
|
|
return obj.IntersectsBBox(geojson.BBox{
|
|
Min: geojson.Position{X: fence.minLon, Y: fence.minLat, Z: 0},
|
|
Max: geojson.Position{X: fence.maxLon, Y: fence.maxLat, Z: 0},
|
|
})
|
|
}
|
|
return false
|
|
}
|
|
|
|
func fenceMatchRoam(c *Controller, fence *liveFenceSwitches, tkey, tid string, obj geojson.Object) (keys, ids []string, meterss []float64) {
|
|
col := c.getCol(fence.roam.key)
|
|
if col == nil {
|
|
return
|
|
}
|
|
p := obj.CalculatedPoint()
|
|
col.Nearby(0, 0, p.Y, p.X, fence.roam.meters, math.Inf(-1), math.Inf(+1),
|
|
func(id string, obj geojson.Object, fields []float64) bool {
|
|
var match bool
|
|
if id == tid {
|
|
return true // skip self
|
|
}
|
|
if fence.roam.pattern {
|
|
match, _ = glob.Match(fence.roam.id, id)
|
|
} else {
|
|
match = fence.roam.id == id
|
|
}
|
|
if match {
|
|
keys = append(keys, fence.roam.key)
|
|
ids = append(ids, id)
|
|
meterss = append(meterss, obj.CalculatedPoint().DistanceTo(p))
|
|
}
|
|
return true
|
|
},
|
|
)
|
|
return
|
|
}
|