// NewConnection return a Connection as configured
func NewConnection(db *sql.DB, database string, log dbr.EventReceiver) Connection {
return &connection{Connection: dbr.NewConnection(db, log), database: database, validatorCache: make(ValidatorCache, 0)}
}
func dbrSess() *dbr.Session {
return dbr.NewConnection(mysqlConn(), nil).NewSession(nil)
}
func txCommentSearch(w http.ResponseWriter, r *http.Request) {
// read POST body
setHeaders(w, r, "POST")
type APIRequest struct {
SearchTerm string `json:"search"`
Page int `json:"page"`
ResultsPerPage int `json:"results-per-page"`
}
var body APIRequest
bodyBytes, err := ioutil.ReadAll(r.Body)
if err != nil {
log.Printf("ERROR: reading POST body failed\n%v\n", err)
return
}
if bodyBytes == nil || len(bodyBytes) < 1 {
log.Printf("bodyBytes is nil or couldn't be parsed\n")
return
}
fmt.Printf("%v bytes)\n", len(bodyBytes))
// parse POST json
err = json.Unmarshal(bodyBytes, &body)
if err != nil {
log.Printf("ERROR: json unmarshal failed\n%v", err)
return
}
dbuser := os.Getenv("DB_USER")
dbpass := os.Getenv("DB_PASS")
db, _ := sql.Open("mysql", dbuser+":"+dbpass+"@tcp(localhost:3306)/floblockexplorer")
connection := dbr.NewConnection(db, nil)
// Create a session for each business unit of execution (e.g. a web request or goworkers job)
dbrSess := connection.NewSession(nil)
// Get a record
type Result struct {
Hash dbr.NullString `db: "hash", json: "hash"`
Message dbr.NullString `db: "message", json: "message"`
}
var results []*Result
page := uint64(body.Page)
resultsPerPage := uint64(body.ResultsPerPage)
if resultsPerPage > 30 {
resultsPerPage = 30
}
builder := dbrSess.Select("hash, message").From("tx").Where("message LIKE ?", "%"+body.SearchTerm+"%").Offset(page * resultsPerPage).Limit(resultsPerPage)
_, err = builder.LoadStructs(&results)
if err != nil {
log.Printf("ERROR: database query failure\n%v\n", (err.Error()))
return
} else {
//fmt.Printf("results: %v\n", results)
json, err := json.Marshal(results)
if err != nil {
fmt.Printf("ERROR marshaling json\n%v\n", err)
return
}
//fmt.Printf("%v\n", string(json[:len(json)]))
fmt.Fprintf(w, "%v", string(json))
}
}
