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52696643 A |
1 | {-# LANGUAGE DeriveDataTypeable #-} |
2 | {-# LANGUAGE DeriveGeneric #-} | |
3 | {-# LANGUAGE OverloadedStrings #-} | |
4 | ||
5 | module Graylog.Gelf where | |
6 | ||
7 | import Data.Aeson (ToJSON (..), Value (..), genericToJSON, | |
8 | toJSON) | |
9 | import Data.Aeson.Casing | |
10 | import Data.Scientific | |
11 | import Data.Text (Text) | |
12 | import Data.Time | |
13 | import Data.Typeable | |
14 | import Data.Vector | |
15 | import GHC.Generics | |
16 | ||
17 | data GELF | |
18 | = GELF | |
19 | { _gelfVersion :: Version | |
20 | , _gelfHost :: Text | |
21 | , _gelfShortMessage :: Text | |
22 | , _gelfFullMessage :: Maybe Text | |
23 | , _gelfTimestamp :: Maybe UTCTime | |
24 | , _gelfLevel :: Maybe SyslogLevel | |
25 | , _gelfLine :: Maybe Word | |
26 | , _gelfFile :: Maybe Text | |
27 | , _gelfAdditionalFields :: Vector Field | |
28 | } | |
29 | deriving (Show, Typeable, Generic) | |
30 | ||
31 | instance ToJSON GELF where | |
32 | toJSON = genericToJSON $ aesonPrefix snakeCase | |
33 | ||
34 | -- | |
35 | ||
36 | data Version | |
37 | = Version1x1 | |
38 | deriving (Eq, Show, Typeable, Generic) | |
39 | ||
40 | instance ToJSON Version where | |
41 | toJSON Version1x1 = String "1.1" | |
42 | ||
43 | -- | |
44 | ||
45 | data SyslogLevel | |
46 | = Emergency | |
47 | | Alert | |
48 | | Critical | |
49 | | Error | |
50 | | Warning | |
51 | | Notice | |
52 | | Informational | |
53 | | Debug | |
54 | deriving (Eq, Ord, Show, Typeable, Generic) | |
55 | ||
56 | instance ToJSON SyslogLevel where | |
57 | toJSON Emergency = Number 0 | |
58 | toJSON Alert = Number 1 | |
59 | toJSON Critical = Number 2 | |
60 | toJSON Error = Number 3 | |
61 | toJSON Warning = Number 4 | |
62 | toJSON Notice = Number 5 | |
63 | toJSON Informational = Number 6 | |
64 | toJSON Debug = Number 7 | |
65 | ||
66 | -- | |
67 | ||
68 | data Field | |
69 | = FieldString Text | |
70 | | FieldNumber Scientific | |
71 | deriving (Eq, Show, Typeable, Generic) | |
72 | ||
73 | instance ToJSON Field where | |
74 | toJSON (FieldString s) = String s | |
75 | toJSON (FieldNumber n) = Number n | |
76 |