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package api
import (
"database/sql"
"errors"
"net/http"
"github.com/gin-gonic/gin"
"github.com/hermeznetwork/hermez-node/db/historydb"
"github.com/hermeznetwork/hermez-node/log"
"github.com/hermeznetwork/tracerr"
"github.com/lib/pq"
"github.com/russross/meddler"
)
const (
// maxLimit is the max permited items to be returned in paginated responses
maxLimit uint = 2049
// dfltOrder indicates how paginated endpoints are ordered if not specified
dfltOrder = historydb.OrderAsc
// dfltLimit indicates the limit of returned items in paginated responses if the query param limit is not provided
dfltLimit uint = 20
// 2^32 -1
maxUint32 = 4294967295
// 2^64 /2 -1
maxInt64 = 9223372036854775807
// Error for duplicated key
errDuplicatedKey = "Item already exists"
// Error for timeout due to SQL connection
errSQLTimeout = "The node is under heavy preasure, please try again later"
// Error message returned when context reaches timeout
errCtxTimeout = "context deadline exceeded"
)
var (
// ErrNillBidderAddr is used when a nil bidderAddr is received in the getCoordinator method
ErrNillBidderAddr = errors.New("biderAddr can not be nil")
)
func retSQLErr(err error, c *gin.Context) {
log.Warnw("HTTP API SQL request error", "err", err)
errMsg := tracerr.Unwrap(err).Error()
retDupKey := func(errCode pq.ErrorCode) {
// https://www.postgresql.org/docs/current/errcodes-appendix.html
if errCode == "23505" {
c.JSON(http.StatusInternalServerError, errorMsg{
Message: errDuplicatedKey,
})
} else {
c.JSON(http.StatusInternalServerError, errorMsg{
Message: errMsg,
})
}
}
if errMsg == errCtxTimeout {
c.JSON(http.StatusServiceUnavailable, errorMsg{
Message: errSQLTimeout,
})
} else if sqlErr, ok := tracerr.Unwrap(err).(*pq.Error); ok {
retDupKey(sqlErr.Code)
} else if sqlErr, ok := meddler.DriverErr(tracerr.Unwrap(err)); ok {
retDupKey(sqlErr.(*pq.Error).Code)
} else if tracerr.Unwrap(err) == sql.ErrNoRows {
c.JSON(http.StatusNotFound, errorMsg{
Message: errMsg,
})
} else {
c.JSON(http.StatusInternalServerError, errorMsg{
Message: errMsg,
})
}
}
func retBadReq(err error, c *gin.Context) {
log.Warnw("HTTP API Bad request error", "err", err)
c.JSON(http.StatusBadRequest, errorMsg{
Message: err.Error(),
})
}