moonstream/db/server/cmd/routes.go

57 wiersze
1.6 KiB
Go

package cmd
import (
"database/sql"
"encoding/json"
"log"
"net/http"
)
func pingRoute(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Content-Type", "application/json")
response := PingResponse{Status: "ok"}
json.NewEncoder(w).Encode(response)
}
// Fetch latest block record from database
func (es *extendedServer) blocksLatestRoute(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Content-Type", "application/json")
var blockNumbers []uint64
var blockLatest BlockLatestResponse
rows, err := es.db.Query(`(SELECT block_number FROM ethereum_blocks ORDER BY block_number DESC LIMIT 1)
UNION ALL
(SELECT block_number FROM polygon_blocks ORDER BY block_number DESC LIMIT 1)
UNION ALL
(SELECT block_number FROM polygon_labels WHERE label = 'moonworm-alpha' ORDER BY block_number DESC LIMIT 1)`)
if err != nil {
log.Printf("An error occurred during sql operation: %s", err)
http.Error(w, "Internal server error", http.StatusInternalServerError)
return
}
defer rows.Close()
for rows.Next() {
var bn uint64
err := rows.Scan(&bn)
if err != nil {
if err == sql.ErrNoRows {
http.Error(w, "Row not found", http.StatusNotFound)
} else {
http.Error(w, "Internal server error", http.StatusInternalServerError)
}
log.Printf("An error occurred during scan sql response: %s", err)
return
}
blockNumbers = append(blockNumbers, bn)
}
blockLatest = BlockLatestResponse{
EthereumBlockLatest: blockNumbers[0],
PolygonBlockLatest: blockNumbers[1],
PolygonBlockLatestLabelsMoonwormAlpha: blockNumbers[2],
}
json.NewEncoder(w).Encode(blockLatest)
}