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/*
** Zabbix
** Copyright 2001-2022 Zabbix SIA
**
** Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
** documentation files (the "Software"), to deal in the Software without restriction, including without limitation the
** rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to
** permit persons to whom the Software is furnished to do so, subject to the following conditions:
**
** The above copyright notice and this permission notice shall be included in all copies or substantial portions
** of the Software.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
** WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
** COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
** SOFTWARE.
**/
package zbxerr
import (
"errors"
"unicode"
)
type ZabbixError struct {
err error
cause error
}
// New creates a new ZabbixError
func New(msg string) ZabbixError {
return ZabbixError{errors.New(msg), nil}
}
// Wrap creates a new ZabbixError with wrapped cause
func (e ZabbixError) Wrap(cause error) error {
return ZabbixError{err: e, cause: cause}
}
// Unwrap extracts an original underlying error
func (e ZabbixError) Unwrap() error {
return e.err
}
// Cause returns a cause of original error
func (e ZabbixError) Cause() error {
return e.cause
}
// Error stringifies an error according to Zabbix requirements:
// * the first letter must be capitalized;
// * an error text should be trailed by a dot.
func (e ZabbixError) Error() string {
var msg string
ucFirst := func(str string) string {
for i, v := range str {
return string(unicode.ToUpper(v)) + str[i+1:]
}
return ""
}
if zbxErr, ok := e.err.(ZabbixError); ok {
msg = zbxErr.Raw()
} else {
msg = e.err.Error()
}
if e.cause != nil {
msg += ": " + e.cause.Error()
}
if msg[len(msg)-1:] != "." {
msg += "."
}
return ucFirst(msg)
}
// Raw returns a non-modified error message
func (e ZabbixError) Raw() string {
return e.err.Error()
}
var (
ErrorInvalidParams = New("invalid parameters")
ErrorTooFewParameters = New("too few parameters")
ErrorTooManyParameters = New("too many parameters")
ErrorInvalidConfiguration = New("invalid configuration")
ErrorCannotFetchData = New("cannot fetch data")
ErrorCannotUnmarshalJSON = New("cannot unmarshal JSON")
ErrorCannotMarshalJSON = New("cannot marshal JSON")
ErrorCannotParseResult = New("cannot parse result")
ErrorConnectionFailed = New("connection failed")
ErrorUnsupportedMetric = New("unsupported metric")
ErrorEmptyResult = New("empty result")
ErrorUnknownSession = New("unknown session")
)
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