featurebase/dax/queryer/http/handler.go
Travis Turner d971cfc269
Database isolation: Balancer (#2407)
* Database isolation: Balancer

Remove naive Balancer

remove debugging lines

Thread dax.Transaction through Controller

Change role to roleType

Swap out Balancer interface with new one

Standardize InvalidTransaction error

Add some interface comments

* Remove type.Worker; replace with type.Address

* Remove database validate from Queryer

This is already being handled in the `CreateTable()` method. Prior
to doing that validation, we were getting a panic, but that's no longer
the case.

* Remove dax.TableQualifier; replace with dax.QualifiedDatabaseID

* Update IDK test to create database
2023-01-17 11:57:58 -06:00

113 lines
2.7 KiB
Go

package http
import (
"encoding/json"
"net/http"
"github.com/gorilla/mux"
"github.com/molecula/featurebase/v3/dax"
"github.com/molecula/featurebase/v3/dax/queryer"
)
func Handler(q *queryer.Queryer) http.Handler {
svr := &server{
queryer: q,
}
router := mux.NewRouter()
router.HandleFunc("/health", svr.getHealth).Methods("GET").Name("GetHealth")
router.HandleFunc("/query", svr.postQuery).Methods("POST").Name("PostQuery")
// /sql is a subset of /query, added here to provide an easy integration
// with the FeatureBase cli tool.
router.HandleFunc("/sql", svr.postSQL).Methods("POST").Name("PostSQL")
return router
}
type server struct {
queryer *queryer.Queryer
}
// GET /health
func (s *server) getHealth(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
}
// POST /query
func (s *server) postQuery(w http.ResponseWriter, r *http.Request) {
body := r.Body
defer body.Close()
req := QueryRequest{}
if err := json.NewDecoder(body).Decode(&req); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
ctx := r.Context()
var resp interface{}
var err error
qdbid := dax.NewQualifiedDatabaseID(req.OrganizationID, req.DatabaseID)
if req.SQL != "" {
resp, err = s.queryer.QuerySQL(ctx, qdbid, req.SQL)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
} else {
resp, err = s.queryer.QueryPQL(ctx, qdbid, req.Table, req.PQL)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
}
if err := json.NewEncoder(w).Encode(resp); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
}
// POST /sql
func (s *server) postSQL(w http.ResponseWriter, r *http.Request) {
body := r.Body
defer body.Close()
req := SQLRequest{}
if err := json.NewDecoder(body).Decode(&req); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
ctx := r.Context()
qdbid := dax.NewQualifiedDatabaseID(req.OrganizationID, req.DatabaseID)
resp, err := s.queryer.QuerySQL(ctx, qdbid, req.SQL)
if err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
if err := json.NewEncoder(w).Encode(resp); err != nil {
http.Error(w, err.Error(), http.StatusBadRequest)
return
}
}
type QueryRequest struct {
OrganizationID dax.OrganizationID `json:"org-id"`
DatabaseID dax.DatabaseID `json:"db-id"`
Table dax.TableName `json:"table-name"`
PQL string `json:"pql"`
SQL string `json:"sql"`
}
type SQLRequest struct {
OrganizationID dax.OrganizationID `json:"org-id"`
DatabaseID dax.DatabaseID `json:"db-id"`
SQL string `json:"sql"`
}
type QueryResponse interface{}