func ParseParams(paramEncoding int8, params []byte) (*dynmap.DynMap, error) {
if len(params) == 0 {
return dynmap.New(), nil
}
if paramEncoding == 0 {
//json
mp := dynmap.New()
err := mp.UnmarshalJSON(params)
return mp, err
}
return nil, fmt.Errorf("Unsupported param encoding %d", paramEncoding)
}
//creates a new response from a dynmap
func NewResponseDynMap(mp *dynmap.DynMap) *Response {
strest := mp.MustDynMap("strest", dynmap.New())
status := mp.MustDynMap("status", dynmap.New())
mp.Remove("strest")
mp.Remove("status")
response := &Response{
DynMap: *mp,
txnId: strest.MustString("txn.id", ""),
txnStatus: strest.MustString("txn.status", "completed"),
statusCode: status.MustInt("code", 200),
statusMessage: status.MustString("message", "OK"),
}
return response
}
//creates a new request from a dynmap
func NewRequestDynMap(mp *dynmap.DynMap) *Request {
request := &Request{
// version : mp.MustFloat32("strest.v", mp.StrestVersion), //TODO
version: StrestVersion,
uri: mp.MustString("strest.uri", ""),
method: mp.MustString("strest.method", "GET"),
txnId: mp.MustString("strest.txn.id", ""),
txnAccept: mp.MustString("strest.txn.accept", "single"),
params: mp.MustDynMap("strest.params", dynmap.New()),
}
shardMp, ok := mp.GetDynMap("strest.shard")
if ok {
request.Shard = &ShardRequest{
Partition: shardMp.MustInt("partition", -1),
Key: shardMp.MustString("key", ""),
Revision: shardMp.MustInt64("revision", int64(-1)),
}
} else {
request.Shard = &ShardRequest{
Partition: request.params.MustInt(PARAM_SHARD_PARTITION, -1),
Key: request.params.MustString(PARAM_SHARD_KEY, ""),
Revision: request.params.MustInt64(PARAM_SHARD_REVISION, int64(-1)),
}
}
return request
}
func (this *BinDecoder) DecodeHello() (*dynmap.DynMap, error) {
log.Println("DECODE HELLO")
//read the hello
helloEncoding := int8(0)
err := binary.Read(this.reader, binary.BigEndian, &helloEncoding)
if err != nil {
return nil, err
}
hello, err := ReadByteArray(this.reader)
if err != nil {
log.Print(err)
//TODO: Send bad hello.
return nil, err
}
log.Printf(" HELLO %s", hello)
this.Hello = dynmap.New()
err = this.Hello.UnmarshalJSON(hello)
if err != nil {
log.Print(err)
//TODO: Send bad hello.
return nil, err
}
return this.Hello, nil
}
func newCheshireConn(protocol cheshire.Protocol, addr string, writeTimeout time.Duration, maxInFlight int) (*cheshireConn, error) {
conn, err := net.DialTimeout("tcp", addr, time.Second)
if err != nil {
return nil, err
}
err = protocol.WriteHello(conn, dynmap.New())
if err != nil {
return nil, err
}
nc := &cheshireConn{
Conn: conn,
connected: 1,
addr: addr,
writeTimeout: writeTimeout,
exitChan: make(chan int),
incomingChan: make(chan *cheshire.Response, 25),
outgoingChan: make(chan *cheshireRequest, 25),
inflightChan: make(chan bool, maxInFlight),
requests: make(map[string]*cheshireRequest),
connectedAt: time.Now(),
protocol: protocol,
maxInFlight: maxInFlight,
}
return nc, nil
}
// Creates a new dynmap with all the appropriate fields
// This is here for compatibility, but is rather inefficient
func (this *Request) ToDynMap() *dynmap.DynMap {
request := dynmap.New()
request.PutWithDot("strest.params", this.params)
request.PutWithDot("strest.v", this.version)
request.PutWithDot("strest.uri", this.uri)
request.PutWithDot("strest.method", this.method)
request.PutWithDot("strest.txn.accept", this.txnAccept)
return request
}
func (this *JSONDecoder) DecodeRequest() (*Request, error) {
mp := dynmap.New()
err := this.dec.Decode(mp)
if err != nil {
return nil, err
}
req := NewRequestDynMap(mp)
return req, nil
}
// Create a new request object.
// Values are all set to defaults
func NewRequest(uri, method string) *Request {
request := &Request{
version: StrestVersion,
uri: uri,
method: method,
txnAccept: "single",
params: dynmap.New(),
Shard: &ShardRequest{
Partition: -1,
},
}
return request
}
func ToStrestRequest(req *http.Request) *Request {
//print out the http request.
// log.Println("*******************")
// var doc bytes.Buffer
// req.Write(&doc)
// log.Println(doc.String())
// log.Println("*******************")
var request = NewRequest(req.URL.Path, req.Method)
request.SetUri(req.URL.Path)
request.SetMethod(req.Method)
request.SetTxnId(req.Header.Get("Strest-Txn-Id"))
request.SetTxnAccept(req.Header.Get("Strest-Txn-Accept"))
if len(request.TxnAccept()) == 0 {
request.SetTxnAccept("single")
}
//deal with the params
params := dynmap.New()
//we always do parse form since it will handle the
// url params as well
err := req.ParseForm()
if err != nil {
log.Printf("Error parsing form values: %s", err)
}
err = params.UnmarshalURLValues(req.Form)
if err != nil {
log.Printf("Error parsing form values: %s", err)
}
//now deal with possible different content types.
ct := req.Header.Get("Content-Type")
switch {
case strings.Contains(ct, "json"):
//parse as json
bytes, err := ReadHttpBody(req)
if err != nil {
log.Printf("ERROR reading body %s", err)
}
err = params.UnmarshalJSON(bytes)
}
request.SetParams(params)
return request
}
// loop that listens for incoming messages.
func (this *cheshireConn) listener() {
decoder := json.NewDecoder(bufio.NewReader(this.Conn))
log.Printf("Starting Cheshire Connection %s", this.addr)
defer func() { this.exitChan <- 1 }()
for {
res := &cheshire.Response{*dynmap.New()}
err := decoder.Decode(res)
if err == io.EOF {
log.Print(err)
break
} else if err != nil {
log.Print(err)
break
}
this.incomingChan <- res
}
}
// Creates a new Stats tracker. caller must still envoke the Start function
// timeamounts should be in the form "{num} {timeframe}"
// example
// NewStats("1 minute", "30 minute", "1 day")
func New(timeamounts ...string) (*Stats, error) {
s := &Stats{
itemChan: make(chan statsItem, 5),
getChan: make(chan getRequest, 10),
items: make(map[timeamount.TimeAmount]*StatsSave),
}
for _, ta := range timeamounts {
t, err := timeamount.Parse(ta)
if err != nil {
return nil, err
}
s.items[t] = &StatsSave{
Epoch: t.ToTrendrrEpoch(time.Now()),
TimeAmount: t,
Values: dynmap.New(),
}
}
return s, nil
}
func (this *Stats) add(item statsItem) {
for ta, sts := range this.items {
epoch := ta.ToTrendrrEpoch(time.Now())
if epoch != sts.Epoch {
// need to persist this..
this.persist(sts)
sts = &StatsSave{
Epoch: epoch,
TimeAmount: ta,
Values: dynmap.New(),
}
this.items[ta] = sts
}
if item.typ == INC {
val := sts.Values.MustInt64(item.Key, int64(0))
sts.Values.PutWithDot(item.Key, int64(val+item.Val))
} else if item.typ == SET {
sts.Values.PutWithDot(item.Key, int64(item.Val))
}
}
}
func (this *HttpClient) ApiCallSync(req *cheshire.Request, timeout time.Duration) (*cheshire.Response, error) {
uri := req.Uri()
var reqBody io.Reader
if req.Method() == "GET" {
joiner := "&"
//add params to the uri
if !strings.Contains(uri, "?") {
joiner = "?"
}
pms, err := req.Params().MarshalURL()
if err != nil {
return nil, err
}
uri = fmt.Sprintf("%s%s%s", uri, joiner, pms)
} else {
// set the request body as json
json, err := req.Params().MarshalJSON()
if err != nil {
return nil, err
}
// log.Printf("JSON %s", string(json))
reqBody = bytes.NewReader(json)
}
url := fmt.Sprintf("http://%s%s", this.Address, uri)
//convert to an http.Request
request, err := http.NewRequest(req.Method(), url, reqBody)
if req.Method() != "GET" {
//set the content type
request.Header.Set("Content-Type", "application/json")
}
if err != nil {
return nil, err
}
res, err := http.DefaultClient.Do(request)
if err != nil {
return nil, err
}
defer res.Body.Close()
body, err := ioutil.ReadAll(res.Body)
if err != nil {
return nil, err
}
//convert to a strest response2
mp := dynmap.New()
// var response = &cheshire.Response{*dynmap.NewDynMap()}
err = mp.UnmarshalJSON(body)
response := cheshire.NewResponseDynMap(mp)
if err != nil {
return nil, err
}
return response, nil
}
