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endpoints.go
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endpoints.go
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package pubnub
import (
"fmt"
"net/http"
"net/url"
"strconv"
"time"
"github.com/pubnub/go/pnerr"
"github.com/pubnub/go/utils"
)
type endpointOpts interface {
config() Config
client() *http.Client
context() Context
validate() error
buildPath() (string, error)
buildQuery() (*url.Values, error)
buildBody() ([]byte, error)
httpMethod() string
operationType() OperationType
telemetryManager() *TelemetryManager
}
func defaultQuery(uuid string, telemetryManager *TelemetryManager) *url.Values {
v := &url.Values{}
v.Set("pnsdk", "PubNub-Go/"+Version)
v.Set("uuid", uuid)
for queryName, queryParam := range telemetryManager.OperationLatency() {
v.Set(queryName, queryParam)
}
return v
}
func buildUrl(o endpointOpts) (*url.URL, error) {
var stringifiedQuery string
var signature string
path, err := o.buildPath()
if err != nil {
return &url.URL{}, err
}
query, err := o.buildQuery()
if err != nil {
return &url.URL{}, err
}
if o.config().FilterExpression != "" {
query.Set("filter-expr", o.config().FilterExpression)
}
if v := o.config().AuthKey; v != "" {
query.Set("auth", v)
}
if o.config().SecretKey != "" {
timestamp := time.Now().Unix()
query.Set("timestamp", strconv.Itoa(int(timestamp)))
signedInput := o.config().SubscribeKey + "\n" + o.config().PublishKey + "\n"
if o.operationType() == PNAccessManagerGrant ||
o.operationType() == PNAccessManagerRevoke {
signedInput += "grant\n"
} else {
signedInput += fmt.Sprintf("%s\n", path)
}
signedInput += utils.PreparePamParams(query)
signature = utils.GetHmacSha256(o.config().SecretKey, signedInput)
}
if o.operationType() == PNPublishOperation {
v := query.Get("meta")
if v != "" {
query.Set("meta", utils.UrlEncode(v))
}
}
if o.operationType() == PNSetStateOperation {
v := query.Get("state")
query.Set("state", utils.UrlEncode(v))
}
if v := query.Get("uuid"); v != "" {
query.Set("uuid", utils.UrlEncode(v))
}
i := 0
for k, v := range *query {
if i == len(*query)-1 {
stringifiedQuery += fmt.Sprintf("%s=%s", k, v[0])
} else {
stringifiedQuery += fmt.Sprintf("%s=%s&", k, v[0])
}
i++
}
if signature != "" {
stringifiedQuery += fmt.Sprintf("&signature=%s", signature)
}
path = fmt.Sprintf("//%s%s", o.config().Origin, path)
retUrl := &url.URL{
Opaque: path,
Scheme: "https",
Host: o.config().Origin,
RawQuery: stringifiedQuery,
}
return retUrl, nil
}
func newValidationError(o endpointOpts, msg string) error {
return pnerr.NewValidationError(string(o.operationType()), msg)
}