tile38/internal/server/crud.go

1091 lines
24 KiB
Go

package server
import (
"bytes"
"sort"
"strconv"
"strings"
"time"
"github.com/mmcloughlin/geohash"
"github.com/tidwall/geojson"
"github.com/tidwall/geojson/geometry"
"github.com/tidwall/rbang"
"github.com/tidwall/resp"
"github.com/tidwall/tile38/internal/collection"
"github.com/tidwall/tile38/internal/glob"
"github.com/tidwall/tinybtree"
)
type fvt struct {
field string
value float64
}
type byField []fvt
func (a byField) Len() int {
return len(a)
}
func (a byField) Less(i, j int) bool {
return a[i].field < a[j].field
}
func (a byField) Swap(i, j int) {
a[i], a[j] = a[j], a[i]
}
func orderFields(fmap map[string]int, fields []float64) []fvt {
var fv fvt
fvs := make([]fvt, 0, len(fmap))
for field, idx := range fmap {
if idx < len(fields) {
fv.field = field
fv.value = fields[idx]
if fv.value != 0 {
fvs = append(fvs, fv)
}
}
}
sort.Sort(byField(fvs))
return fvs
}
func (server *Server) cmdBounds(msg *Message) (resp.Value, error) {
start := time.Now()
vs := msg.Args[1:]
var ok bool
var key string
if vs, key, ok = tokenval(vs); !ok || key == "" {
return NOMessage, errInvalidNumberOfArguments
}
if len(vs) != 0 {
return NOMessage, errInvalidNumberOfArguments
}
col := server.getCol(key)
if col == nil {
if msg.OutputType == RESP {
return resp.NullValue(), nil
}
return NOMessage, errKeyNotFound
}
vals := make([]resp.Value, 0, 2)
var buf bytes.Buffer
if msg.OutputType == JSON {
buf.WriteString(`{"ok":true`)
}
minX, minY, maxX, maxY := col.Bounds()
bbox := geojson.NewRect(geometry.Rect{
Min: geometry.Point{X: minX, Y: minY},
Max: geometry.Point{X: maxX, Y: maxY},
})
if msg.OutputType == JSON {
buf.WriteString(`,"bounds":`)
buf.WriteString(string(bbox.AppendJSON(nil)))
} else {
vals = append(vals, resp.ArrayValue([]resp.Value{
resp.ArrayValue([]resp.Value{
resp.FloatValue(minX),
resp.FloatValue(minY),
}),
resp.ArrayValue([]resp.Value{
resp.FloatValue(maxX),
resp.FloatValue(maxY),
}),
}))
}
switch msg.OutputType {
case JSON:
buf.WriteString(`,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
return resp.StringValue(buf.String()), nil
case RESP:
return vals[0], nil
}
return NOMessage, nil
}
func (server *Server) cmdType(msg *Message) (resp.Value, error) {
start := time.Now()
vs := msg.Args[1:]
var ok bool
var key string
if vs, key, ok = tokenval(vs); !ok || key == "" {
return NOMessage, errInvalidNumberOfArguments
}
col := server.getCol(key)
if col == nil {
if msg.OutputType == RESP {
return resp.SimpleStringValue("none"), nil
}
return NOMessage, errKeyNotFound
}
typ := "hash"
switch msg.OutputType {
case JSON:
return resp.StringValue(`{"ok":true,"type":` + string(typ) + `,"elapsed":"` + time.Now().Sub(start).String() + "\"}"), nil
case RESP:
return resp.SimpleStringValue(typ), nil
}
return NOMessage, nil
}
func (server *Server) cmdGet(msg *Message) (resp.Value, error) {
start := time.Now()
vs := msg.Args[1:]
var ok bool
var key, id, typ, sprecision string
if vs, key, ok = tokenval(vs); !ok || key == "" {
return NOMessage, errInvalidNumberOfArguments
}
if vs, id, ok = tokenval(vs); !ok || id == "" {
return NOMessage, errInvalidNumberOfArguments
}
withfields := false
if _, peek, ok := tokenval(vs); ok && strings.ToLower(peek) == "withfields" {
withfields = true
vs = vs[1:]
}
col := server.getCol(key)
if col == nil {
if msg.OutputType == RESP {
return resp.NullValue(), nil
}
return NOMessage, errKeyNotFound
}
o, fields, ok := col.Get(id)
ok = ok && !server.hasExpired(key, id)
if !ok {
if msg.OutputType == RESP {
return resp.NullValue(), nil
}
return NOMessage, errIDNotFound
}
vals := make([]resp.Value, 0, 2)
var buf bytes.Buffer
if msg.OutputType == JSON {
buf.WriteString(`{"ok":true`)
}
vs, typ, ok = tokenval(vs)
typ = strings.ToLower(typ)
if !ok {
typ = "object"
}
switch typ {
default:
return NOMessage, errInvalidArgument(typ)
case "object":
if msg.OutputType == JSON {
buf.WriteString(`,"object":`)
buf.WriteString(string(o.AppendJSON(nil)))
} else {
vals = append(vals, resp.StringValue(o.String()))
}
case "point":
if msg.OutputType == JSON {
buf.WriteString(`,"point":`)
buf.Write(appendJSONSimplePoint(nil, o))
} else {
point := o.Center()
var z float64
if gPoint, ok := o.(*geojson.Point); ok {
z = gPoint.Z()
}
if z != 0 {
vals = append(vals, resp.ArrayValue([]resp.Value{
resp.StringValue(strconv.FormatFloat(point.Y, 'f', -1, 64)),
resp.StringValue(strconv.FormatFloat(point.X, 'f', -1, 64)),
resp.StringValue(strconv.FormatFloat(z, 'f', -1, 64)),
}))
} else {
vals = append(vals, resp.ArrayValue([]resp.Value{
resp.StringValue(strconv.FormatFloat(point.Y, 'f', -1, 64)),
resp.StringValue(strconv.FormatFloat(point.X, 'f', -1, 64)),
}))
}
}
case "hash":
if vs, sprecision, ok = tokenval(vs); !ok || sprecision == "" {
return NOMessage, errInvalidNumberOfArguments
}
if msg.OutputType == JSON {
buf.WriteString(`,"hash":`)
}
precision, err := strconv.ParseInt(sprecision, 10, 64)
if err != nil || precision < 1 || precision > 64 {
return NOMessage, errInvalidArgument(sprecision)
}
center := o.Center()
p := geohash.EncodeWithPrecision(center.Y, center.X, uint(precision))
if msg.OutputType == JSON {
buf.WriteString(`"` + p + `"`)
} else {
vals = append(vals, resp.StringValue(p))
}
case "bounds":
if msg.OutputType == JSON {
buf.WriteString(`,"bounds":`)
buf.Write(appendJSONSimpleBounds(nil, o))
} else {
bbox := o.Rect()
vals = append(vals, resp.ArrayValue([]resp.Value{
resp.ArrayValue([]resp.Value{
resp.FloatValue(bbox.Min.Y),
resp.FloatValue(bbox.Min.X),
}),
resp.ArrayValue([]resp.Value{
resp.FloatValue(bbox.Max.Y),
resp.FloatValue(bbox.Max.X),
}),
}))
}
}
if len(vs) != 0 {
return NOMessage, errInvalidNumberOfArguments
}
if withfields {
fvs := orderFields(col.FieldMap(), fields)
if len(fvs) > 0 {
fvals := make([]resp.Value, 0, len(fvs)*2)
if msg.OutputType == JSON {
buf.WriteString(`,"fields":{`)
}
for i, fv := range fvs {
if msg.OutputType == JSON {
if i > 0 {
buf.WriteString(`,`)
}
buf.WriteString(jsonString(fv.field) + ":" + strconv.FormatFloat(fv.value, 'f', -1, 64))
} else {
fvals = append(fvals, resp.StringValue(fv.field), resp.StringValue(strconv.FormatFloat(fv.value, 'f', -1, 64)))
}
i++
}
if msg.OutputType == JSON {
buf.WriteString(`}`)
} else {
vals = append(vals, resp.ArrayValue(fvals))
}
}
}
switch msg.OutputType {
case JSON:
buf.WriteString(`,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
return resp.StringValue(buf.String()), nil
case RESP:
var oval resp.Value
if withfields {
oval = resp.ArrayValue(vals)
} else {
oval = vals[0]
}
return oval, nil
}
return NOMessage, nil
}
func (server *Server) cmdDel(msg *Message) (res resp.Value, d commandDetails, err error) {
start := time.Now()
vs := msg.Args[1:]
var ok bool
if vs, d.key, ok = tokenval(vs); !ok || d.key == "" {
err = errInvalidNumberOfArguments
return
}
if vs, d.id, ok = tokenval(vs); !ok || d.id == "" {
err = errInvalidNumberOfArguments
return
}
if len(vs) != 0 {
err = errInvalidNumberOfArguments
return
}
found := false
col := server.getCol(d.key)
if col != nil {
d.obj, d.fields, ok = col.Delete(d.id)
if ok {
if col.Count() == 0 {
server.deleteCol(d.key)
}
found = true
}
}
server.clearIDExpires(d.key, d.id)
d.command = "del"
d.updated = found
d.timestamp = time.Now()
switch msg.OutputType {
case JSON:
res = resp.StringValue(`{"ok":true,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
case RESP:
if d.updated {
res = resp.IntegerValue(1)
} else {
res = resp.IntegerValue(0)
}
}
return
}
func (server *Server) cmdPdel(msg *Message) (res resp.Value, d commandDetails, err error) {
start := time.Now()
vs := msg.Args[1:]
var ok bool
if vs, d.key, ok = tokenval(vs); !ok || d.key == "" {
err = errInvalidNumberOfArguments
return
}
if vs, d.pattern, ok = tokenval(vs); !ok || d.pattern == "" {
err = errInvalidNumberOfArguments
return
}
if len(vs) != 0 {
err = errInvalidNumberOfArguments
return
}
now := time.Now()
iter := func(id string, o geojson.Object, fields []float64) bool {
if match, _ := glob.Match(d.pattern, id); match {
d.children = append(d.children, &commandDetails{
command: "del",
updated: true,
timestamp: now,
key: d.key,
id: id,
})
}
return true
}
var expired int
col := server.getCol(d.key)
if col != nil {
g := glob.Parse(d.pattern, false)
if g.Limits[0] == "" && g.Limits[1] == "" {
col.Scan(false, nil, msg.Deadline, iter)
} else {
col.ScanRange(g.Limits[0], g.Limits[1], false, nil, msg.Deadline, iter)
}
var atLeastOneNotDeleted bool
for i, dc := range d.children {
dc.obj, dc.fields, ok = col.Delete(dc.id)
if !ok {
d.children[i].command = "?"
atLeastOneNotDeleted = true
} else {
d.children[i] = dc
}
server.clearIDExpires(d.key, dc.id)
}
if atLeastOneNotDeleted {
var nchildren []*commandDetails
for _, dc := range d.children {
if dc.command == "del" {
nchildren = append(nchildren, dc)
}
}
d.children = nchildren
}
if col.Count() == 0 {
server.deleteCol(d.key)
}
}
d.command = "pdel"
d.updated = len(d.children) > 0
d.timestamp = now
d.parent = true
switch msg.OutputType {
case JSON:
res = resp.StringValue(`{"ok":true,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
case RESP:
total := len(d.children) - expired
if total < 0 {
total = 0
}
res = resp.IntegerValue(total)
}
return
}
func (server *Server) cmdDrop(msg *Message) (res resp.Value, d commandDetails, err error) {
start := time.Now()
vs := msg.Args[1:]
var ok bool
if vs, d.key, ok = tokenval(vs); !ok || d.key == "" {
err = errInvalidNumberOfArguments
return
}
if len(vs) != 0 {
err = errInvalidNumberOfArguments
return
}
col := server.getCol(d.key)
if col != nil {
server.deleteCol(d.key)
d.updated = true
} else {
d.key = "" // ignore the details
d.updated = false
}
d.command = "drop"
d.timestamp = time.Now()
server.clearKeyExpires(d.key)
switch msg.OutputType {
case JSON:
res = resp.StringValue(`{"ok":true,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
case RESP:
if d.updated {
res = resp.IntegerValue(1)
} else {
res = resp.IntegerValue(0)
}
}
return
}
func (server *Server) cmdRename(msg *Message, nx bool) (res resp.Value, d commandDetails, err error) {
start := time.Now()
vs := msg.Args[1:]
var ok bool
if vs, d.key, ok = tokenval(vs); !ok || d.key == "" {
err = errInvalidNumberOfArguments
return
}
if vs, d.newKey, ok = tokenval(vs); !ok || d.newKey == "" {
err = errInvalidNumberOfArguments
return
}
if len(vs) != 0 {
err = errInvalidNumberOfArguments
return
}
col := server.getCol(d.key)
if col == nil {
err = errKeyNotFound
return
}
for _, h := range server.hooks {
if h.Key == d.key || h.Key == d.newKey {
err = errKeyHasHooksSet
return
}
}
d.command = "rename"
newCol := server.getCol(d.newKey)
if newCol == nil {
d.updated = true
} else if nx {
d.updated = false
} else {
server.deleteCol(d.newKey)
server.clearKeyExpires(d.newKey)
d.updated = true
}
if d.updated {
server.deleteCol(d.key)
server.setCol(d.newKey, col)
server.moveKeyExpires(d.key, d.newKey)
}
d.timestamp = time.Now()
switch msg.OutputType {
case JSON:
res = resp.StringValue(`{"ok":true,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
case RESP:
if !nx {
res = resp.SimpleStringValue("OK")
} else if d.updated {
res = resp.IntegerValue(1)
} else {
res = resp.IntegerValue(0)
}
}
return
}
func (server *Server) cmdFlushDB(msg *Message) (res resp.Value, d commandDetails, err error) {
start := time.Now()
vs := msg.Args[1:]
if len(vs) != 0 {
err = errInvalidNumberOfArguments
return
}
server.cols = tinybtree.BTree{}
server.exlistmu.Lock()
server.exlist = nil
server.exlistmu.Unlock()
server.expires = make(map[string]map[string]time.Time)
server.hooks = make(map[string]*Hook)
server.hooksOut = make(map[string]*Hook)
server.hookTree = rbang.RTree{}
d.command = "flushdb"
d.updated = true
d.timestamp = time.Now()
switch msg.OutputType {
case JSON:
res = resp.StringValue(`{"ok":true,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
case RESP:
res = resp.SimpleStringValue("OK")
}
return
}
func (server *Server) parseSetArgs(vs []string) (
d commandDetails, fields []string, values []float64,
xx, nx bool,
expires *float64, etype []byte, evs []string, err error,
) {
var ok bool
var typ []byte
if vs, d.key, ok = tokenval(vs); !ok || d.key == "" {
err = errInvalidNumberOfArguments
return
}
if vs, d.id, ok = tokenval(vs); !ok || d.id == "" {
err = errInvalidNumberOfArguments
return
}
var arg []byte
var nvs []string
for {
if nvs, arg, ok = tokenvalbytes(vs); !ok || len(arg) == 0 {
err = errInvalidNumberOfArguments
return
}
if lcb(arg, "field") {
vs = nvs
var name string
var svalue string
var value float64
if vs, name, ok = tokenval(vs); !ok || name == "" {
err = errInvalidNumberOfArguments
return
}
if isReservedFieldName(name) {
err = errInvalidArgument(name)
return
}
if vs, svalue, ok = tokenval(vs); !ok || svalue == "" {
err = errInvalidNumberOfArguments
return
}
value, err = strconv.ParseFloat(svalue, 64)
if err != nil {
err = errInvalidArgument(svalue)
return
}
fields = append(fields, name)
values = append(values, value)
continue
}
if lcb(arg, "ex") {
vs = nvs
if expires != nil {
err = errInvalidArgument(string(arg))
return
}
var s string
var v float64
if vs, s, ok = tokenval(vs); !ok || s == "" {
err = errInvalidNumberOfArguments
return
}
v, err = strconv.ParseFloat(s, 64)
if err != nil {
err = errInvalidArgument(s)
return
}
expires = &v
continue
}
if lcb(arg, "xx") {
vs = nvs
if nx {
err = errInvalidArgument(string(arg))
return
}
xx = true
continue
}
if lcb(arg, "nx") {
vs = nvs
if xx {
err = errInvalidArgument(string(arg))
return
}
nx = true
continue
}
break
}
if vs, typ, ok = tokenvalbytes(vs); !ok || len(typ) == 0 {
err = errInvalidNumberOfArguments
return
}
if len(vs) == 0 {
err = errInvalidNumberOfArguments
return
}
etype = typ
evs = vs
switch {
default:
err = errInvalidArgument(string(typ))
return
case lcb(typ, "string"):
var str string
if vs, str, ok = tokenval(vs); !ok {
err = errInvalidNumberOfArguments
return
}
d.obj = collection.String(str)
case lcb(typ, "point"):
var slat, slon, sz string
if vs, slat, ok = tokenval(vs); !ok || slat == "" {
err = errInvalidNumberOfArguments
return
}
if vs, slon, ok = tokenval(vs); !ok || slon == "" {
err = errInvalidNumberOfArguments
return
}
vs, sz, ok = tokenval(vs)
if !ok || sz == "" {
var x, y float64
y, err = strconv.ParseFloat(slat, 64)
if err != nil {
err = errInvalidArgument(slat)
return
}
x, err = strconv.ParseFloat(slon, 64)
if err != nil {
err = errInvalidArgument(slon)
return
}
d.obj = geojson.NewPoint(geometry.Point{X: x, Y: y})
} else {
var x, y, z float64
y, err = strconv.ParseFloat(slat, 64)
if err != nil {
err = errInvalidArgument(slat)
return
}
x, err = strconv.ParseFloat(slon, 64)
if err != nil {
err = errInvalidArgument(slon)
return
}
z, err = strconv.ParseFloat(sz, 64)
if err != nil {
err = errInvalidArgument(sz)
return
}
d.obj = geojson.NewPointZ(geometry.Point{X: x, Y: y}, z)
}
case lcb(typ, "bounds"):
var sminlat, sminlon, smaxlat, smaxlon string
if vs, sminlat, ok = tokenval(vs); !ok || sminlat == "" {
err = errInvalidNumberOfArguments
return
}
if vs, sminlon, ok = tokenval(vs); !ok || sminlon == "" {
err = errInvalidNumberOfArguments
return
}
if vs, smaxlat, ok = tokenval(vs); !ok || smaxlat == "" {
err = errInvalidNumberOfArguments
return
}
if vs, smaxlon, ok = tokenval(vs); !ok || smaxlon == "" {
err = errInvalidNumberOfArguments
return
}
var minlat, minlon, maxlat, maxlon float64
minlat, err = strconv.ParseFloat(sminlat, 64)
if err != nil {
err = errInvalidArgument(sminlat)
return
}
minlon, err = strconv.ParseFloat(sminlon, 64)
if err != nil {
err = errInvalidArgument(sminlon)
return
}
maxlat, err = strconv.ParseFloat(smaxlat, 64)
if err != nil {
err = errInvalidArgument(smaxlat)
return
}
maxlon, err = strconv.ParseFloat(smaxlon, 64)
if err != nil {
err = errInvalidArgument(smaxlon)
return
}
d.obj = geojson.NewRect(geometry.Rect{
Min: geometry.Point{X: minlon, Y: minlat},
Max: geometry.Point{X: maxlon, Y: maxlat},
})
case lcb(typ, "hash"):
var shash string
if vs, shash, ok = tokenval(vs); !ok || shash == "" {
err = errInvalidNumberOfArguments
return
}
lat, lon := geohash.Decode(shash)
d.obj = geojson.NewPoint(geometry.Point{X: lon, Y: lat})
case lcb(typ, "object"):
var object string
if vs, object, ok = tokenval(vs); !ok || object == "" {
err = errInvalidNumberOfArguments
return
}
d.obj, err = geojson.Parse(object, &server.geomParseOpts)
if err != nil {
return
}
}
if len(vs) != 0 {
err = errInvalidNumberOfArguments
}
return
}
func (server *Server) cmdSet(msg *Message, resetExpires bool) (res resp.Value, d commandDetails, err error) {
if server.config.maxMemory() > 0 && server.outOfMemory.on() {
err = errOOM
return
}
start := time.Now()
vs := msg.Args[1:]
var fmap map[string]int
var fields []string
var values []float64
var xx, nx bool
var ex *float64
d, fields, values, xx, nx, ex, _, _, err = server.parseSetArgs(vs)
if err != nil {
return
}
col := server.getCol(d.key)
if col == nil {
if xx {
goto notok
}
col = collection.New()
server.setCol(d.key, col)
}
if xx || nx {
_, _, ok := col.Get(d.id)
if (nx && ok) || (xx && !ok) {
goto notok
}
}
if resetExpires {
server.clearIDExpires(d.key, d.id)
}
d.oldObj, d.oldFields, d.fields = col.Set(d.id, d.obj, fields, values)
d.command = "set"
d.updated = true // perhaps we should do a diff on the previous object?
d.timestamp = time.Now()
if msg.ConnType != Null || msg.OutputType != Null {
// likely loaded from aof at server startup, ignore field remapping.
fmap = col.FieldMap()
d.fmap = make(map[string]int)
for key, idx := range fmap {
d.fmap[key] = idx
}
}
if ex != nil {
server.expireAt(d.key, d.id, d.timestamp.Add(time.Duration(float64(time.Second)*(*ex))))
}
switch msg.OutputType {
default:
case JSON:
res = resp.StringValue(`{"ok":true,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
case RESP:
res = resp.SimpleStringValue("OK")
}
return
notok:
switch msg.OutputType {
default:
case JSON:
if nx {
err = errIDAlreadyExists
} else {
err = errIDNotFound
}
return
case RESP:
res = resp.NullValue()
}
return
}
func (server *Server) parseFSetArgs(vs []string) (
d commandDetails, fields []string, values []float64, xx bool, err error,
) {
var ok bool
if vs, d.key, ok = tokenval(vs); !ok || d.key == "" {
err = errInvalidNumberOfArguments
return
}
if vs, d.id, ok = tokenval(vs); !ok || d.id == "" {
err = errInvalidNumberOfArguments
return
}
for len(vs) > 0 {
var name string
if vs, name, ok = tokenval(vs); !ok || name == "" {
err = errInvalidNumberOfArguments
return
}
if lc(name, "xx") {
xx = true
continue
}
if isReservedFieldName(name) {
err = errInvalidArgument(name)
return
}
var svalue string
var value float64
if vs, svalue, ok = tokenval(vs); !ok || svalue == "" {
err = errInvalidNumberOfArguments
return
}
value, err = strconv.ParseFloat(svalue, 64)
if err != nil {
err = errInvalidArgument(svalue)
return
}
fields = append(fields, name)
values = append(values, value)
}
return
}
func (server *Server) cmdFset(msg *Message) (res resp.Value, d commandDetails, err error) {
if server.config.maxMemory() > 0 && server.outOfMemory.on() {
err = errOOM
return
}
start := time.Now()
vs := msg.Args[1:]
var fields []string
var values []float64
var xx bool
var updateCount int
d, fields, values, xx, err = server.parseFSetArgs(vs)
col := server.getCol(d.key)
if col == nil {
err = errKeyNotFound
return
}
var ok bool
d.obj, d.fields, updateCount, ok = col.SetFields(d.id, fields, values)
if !(ok || xx) {
err = errIDNotFound
return
}
if ok {
d.command = "fset"
d.timestamp = time.Now()
d.updated = updateCount > 0
fmap := col.FieldMap()
d.fmap = make(map[string]int)
for key, idx := range fmap {
d.fmap[key] = idx
}
}
switch msg.OutputType {
case JSON:
res = resp.StringValue(`{"ok":true,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
case RESP:
res = resp.IntegerValue(updateCount)
}
return
}
func (server *Server) cmdExpire(msg *Message) (res resp.Value, d commandDetails, err error) {
start := time.Now()
vs := msg.Args[1:]
var key, id, svalue string
var ok bool
if vs, key, ok = tokenval(vs); !ok || key == "" {
err = errInvalidNumberOfArguments
return
}
if vs, id, ok = tokenval(vs); !ok || id == "" {
err = errInvalidNumberOfArguments
return
}
if vs, svalue, ok = tokenval(vs); !ok || svalue == "" {
err = errInvalidNumberOfArguments
return
}
if len(vs) != 0 {
err = errInvalidNumberOfArguments
return
}
var value float64
value, err = strconv.ParseFloat(svalue, 64)
if err != nil {
err = errInvalidArgument(svalue)
return
}
ok = false
col := server.getCol(key)
if col != nil {
_, _, ok = col.Get(id)
ok = ok && !server.hasExpired(key, id)
}
if ok {
server.expireAt(key, id, time.Now().Add(time.Duration(float64(time.Second)*value)))
d.updated = true
}
switch msg.OutputType {
case JSON:
if ok {
res = resp.StringValue(`{"ok":true,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
} else {
return resp.SimpleStringValue(""), d, errIDNotFound
}
case RESP:
if ok {
res = resp.IntegerValue(1)
} else {
res = resp.IntegerValue(0)
}
}
return
}
func (server *Server) cmdPersist(msg *Message) (res resp.Value, d commandDetails, err error) {
start := time.Now()
vs := msg.Args[1:]
var key, id string
var ok bool
if vs, key, ok = tokenval(vs); !ok || key == "" {
err = errInvalidNumberOfArguments
return
}
if vs, id, ok = tokenval(vs); !ok || id == "" {
err = errInvalidNumberOfArguments
return
}
if len(vs) != 0 {
err = errInvalidNumberOfArguments
return
}
var cleared bool
ok = false
col := server.getCol(key)
if col != nil {
_, _, ok = col.Get(id)
ok = ok && !server.hasExpired(key, id)
if ok {
cleared = server.clearIDExpires(key, id)
}
}
if !ok {
if msg.OutputType == RESP {
return resp.IntegerValue(0), d, nil
}
return resp.SimpleStringValue(""), d, errIDNotFound
}
d.command = "persist"
d.updated = cleared
d.timestamp = time.Now()
switch msg.OutputType {
case JSON:
res = resp.SimpleStringValue(`{"ok":true,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
case RESP:
if cleared {
res = resp.IntegerValue(1)
} else {
res = resp.IntegerValue(0)
}
}
return
}
func (server *Server) cmdTTL(msg *Message) (res resp.Value, err error) {
start := time.Now()
vs := msg.Args[1:]
var key, id string
var ok bool
if vs, key, ok = tokenval(vs); !ok || key == "" {
err = errInvalidNumberOfArguments
return
}
if vs, id, ok = tokenval(vs); !ok || id == "" {
err = errInvalidNumberOfArguments
return
}
if len(vs) != 0 {
err = errInvalidNumberOfArguments
return
}
var v float64
ok = false
var ok2 bool
col := server.getCol(key)
if col != nil {
_, _, ok = col.Get(id)
ok = ok && !server.hasExpired(key, id)
if ok {
var at time.Time
at, ok2 = server.getExpires(key, id)
if ok2 {
if time.Now().After(at) {
ok2 = false
} else {
v = float64(at.Sub(time.Now())) / float64(time.Second)
if v < 0 {
v = 0
}
}
}
}
}
switch msg.OutputType {
case JSON:
if ok {
var ttl string
if ok2 {
ttl = strconv.FormatFloat(v, 'f', -1, 64)
} else {
ttl = "-1"
}
res = resp.SimpleStringValue(
`{"ok":true,"ttl":` + ttl + `,"elapsed":"` + time.Now().Sub(start).String() + "\"}")
} else {
return resp.SimpleStringValue(""), errIDNotFound
}
case RESP:
if ok {
if ok2 {
res = resp.IntegerValue(int(v))
} else {
res = resp.IntegerValue(-1)
}
} else {
res = resp.IntegerValue(-2)
}
}
return
}