arnaucube/hermez-node
1
0
Fork 0
mirror of https://github.com/arnaucube/hermez-node.git synced 2026-02-07 11:26:44 +01:00
Code Issues Packages Projects Releases Wiki Activity

Add semaphore for API queries to SQL

Browse Source
This commit is contained in:
Arnau B
2021-02-08 18:50:32 +01:00
committed by Eduard S
parent 56d05ce57a
commit ac1fd9acf7
27 changed files with 1339 additions and 981 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
api/handlers.go
View File

@@ -30,6 +30,12 @@ const (
// 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 (
@@ -38,16 +44,20 @@ var (
)
func retSQLErr(err error, c *gin.Context) {
log.Warn("HTTP API SQL request error", "err", err)
if sqlErr, ok := tracerr.Unwrap(err).(*pq.Error); ok {
log.Warnw("HTTP API SQL request error", "err", err)
errMsg := tracerr.Unwrap(err).Error()
if errMsg == errCtxTimeout {
c.JSON(http.StatusServiceUnavailable, errorMsg{
Message: errSQLTimeout,
})
} else if sqlErr, ok := tracerr.Unwrap(err).(*pq.Error); ok {
// https://www.postgresql.org/docs/current/errcodes-appendix.html
if sqlErr.Code == "23505" {
c.JSON(http.StatusInternalServerError, errorMsg{
Message: errDuplicatedKey,
})
}
}
if tracerr.Unwrap(err) == sql.ErrNoRows {
} else if tracerr.Unwrap(err) == sql.ErrNoRows {
c.JSON(http.StatusNotFound, errorMsg{
Message: err.Error(),
})
@@ -59,7 +69,7 @@ func retSQLErr(err error, c *gin.Context) {
}
func retBadReq(err error, c *gin.Context) {
log.Warn("HTTP API Bad request error", "err", err)
log.Warnw("HTTP API Bad request error", "err", err)
c.JSON(http.StatusBadRequest, errorMsg{
Message: err.Error(),
})