forked from influxdata/influxdb
/
flux.go
53 lines (45 loc) · 1.06 KB
/
flux.go
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package httpd
import (
"context"
"encoding/json"
"io/ioutil"
"mime"
"net/http"
"github.com/influxdata/flux"
"github.com/influxdata/influxdb/flux/client"
"github.com/prometheus/client_golang/prometheus"
)
type Controller interface {
Query(ctx context.Context, compiler flux.Compiler) (flux.Query, error)
PrometheusCollectors() []prometheus.Collector
}
// httpDialect is an encoding dialect that can write metadata to HTTP headers
type httpDialect interface {
SetHeaders(w http.ResponseWriter)
}
func decodeQueryRequest(r *http.Request) (*client.QueryRequest, error) {
ct := r.Header.Get("Content-Type")
mt, _, err := mime.ParseMediaType(ct)
if err != nil {
return nil, err
}
var req client.QueryRequest
switch mt {
case "application/vnd.flux":
if d, err := ioutil.ReadAll(r.Body); err != nil {
return nil, err
} else {
req.Query = string(d)
}
default:
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
return nil, err
}
}
req = req.WithDefaults()
err = req.Validate()
if err != nil {
return nil, err
}
return &req, err
}