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binwiederhier-ntfy/server/message.go

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package server
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import (
"heckel.io/ntfy/util"
"time"
)
// List of possible events
const (
openEvent = "open"
keepaliveEvent = "keepalive"
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messageEvent = "message"
)
const (
messageIDLength = 10
)
// message represents a message published to a topic
type message struct {
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ID string `json:"id"` // Random message ID
Time int64 `json:"time"` // Unix time in seconds
Event string `json:"event"` // One of the above
Topic string `json:"topic"`
Priority int `json:"priority,omitempty"`
Tags []string `json:"tags,omitempty"`
Title string `json:"title,omitempty"`
Message string `json:"message,omitempty"`
}
// messageEncoder is a function that knows how to encode a message
type messageEncoder func(msg *message) (string, error)
// newMessage creates a new message with the current timestamp
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func newMessage(event, topic, msg string) *message {
return &message{
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ID: util.RandomString(messageIDLength),
Time: time.Now().Unix(),
Event: event,
Topic: topic,
Priority: 0,
Tags: nil,
Title: "",
Message: msg,
}
}
// newOpenMessage is a convenience method to create an open message
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func newOpenMessage(topic string) *message {
return newMessage(openEvent, topic, "")
}
// newKeepaliveMessage is a convenience method to create a keepalive message
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func newKeepaliveMessage(topic string) *message {
return newMessage(keepaliveEvent, topic, "")
}
// newDefaultMessage is a convenience method to create a notification message
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func newDefaultMessage(topic, msg string) *message {
return newMessage(messageEvent, topic, msg)
}