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package types
import (
"strings"
"time"
)
const (
// Unknown is the default message level.
Unknown MessageLevel = iota
// Debug is the lowest kind of known message level.
Debug
// Info is generally used as the "normal" message level.
Info
// Warning is generally used to denote messages that might be OK, but can cause problems.
Warning
// Error is generally used for messages about things that did not go as planned.
Error
messageLevelCount
// MessageLevelCount is used to create arrays that maps levels to other values.
MessageLevelCount = int(messageLevelCount)
)
var messageLevelStrings = [MessageLevelCount]string{
"Unknown",
"Debug",
"Info",
"Warning",
"Error",
}
// MessageLevel is used to denote the urgency of a message item.
type MessageLevel uint8
// MessageItem is an entry in a notification being sent by a service.
type MessageItem struct {
Text string
Timestamp time.Time
Level MessageLevel
Fields []Field
}
func (level MessageLevel) String() string {
if level >= messageLevelCount {
return messageLevelStrings[0]
}
return messageLevelStrings[level]
}
// WithField appends the key/value pair to the message items fields.
func (mi *MessageItem) WithField(key, value string) *MessageItem {
mi.Fields = append(mi.Fields, Field{
Key: key,
Value: value,
})
return mi
}
// ItemsToPlain joins together the MessageItems' Text using newlines.
// Used implement the rich sender API by redirecting to the plain sender implementation.
func ItemsToPlain(items []MessageItem) string {
builder := strings.Builder{}
for _, item := range items {
builder.WriteString(item.Text)
builder.WriteRune('\n')
}
return builder.String()
}
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