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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 | |
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10 | import Data.Text (Text) |
11 | import Data.Time | |
12 | import Data.Typeable | |
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13 | import GHC.Generics |
14 | ||
15 | data GELF | |
16 | = GELF | |
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17 | { _gelfVersion :: Version |
18 | , _gelfHost :: Text | |
19 | , _gelfShortMessage :: Text | |
20 | , _gelfFullMessage :: Maybe Text | |
21 | , _gelfTimestamp :: Maybe UTCTime | |
22 | , _gelfLevel :: Maybe SyslogLevel | |
23 | , _gelfLine :: Maybe Word | |
24 | , _gelfFile :: Maybe Text | |
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25 | } |
26 | deriving (Show, Typeable, Generic) | |
27 | ||
28 | instance ToJSON GELF where | |
29 | toJSON = genericToJSON $ aesonPrefix snakeCase | |
30 | ||
31 | -- | |
32 | ||
33 | data Version | |
34 | = Version1x1 | |
35 | deriving (Eq, Show, Typeable, Generic) | |
36 | ||
37 | instance ToJSON Version where | |
38 | toJSON Version1x1 = String "1.1" | |
39 | ||
40 | -- | |
41 | ||
42 | data SyslogLevel | |
43 | = Emergency | |
44 | | Alert | |
45 | | Critical | |
46 | | Error | |
47 | | Warning | |
48 | | Notice | |
49 | | Informational | |
50 | | Debug | |
51 | deriving (Eq, Ord, Show, Typeable, Generic) | |
52 | ||
53 | instance ToJSON SyslogLevel where | |
54 | toJSON Emergency = Number 0 | |
55 | toJSON Alert = Number 1 | |
56 | toJSON Critical = Number 2 | |
57 | toJSON Error = Number 3 | |
58 | toJSON Warning = Number 4 | |
59 | toJSON Notice = Number 5 | |
60 | toJSON Informational = Number 6 | |
61 | toJSON Debug = Number 7 | |
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62 | |
63 | -- | |
64 | ||
65 | simpleGelf | |
66 | :: Text -- ^ Hostname | |
67 | -> Text -- ^ Short message | |
68 | -> GELF | |
69 | simpleGelf host short = | |
70 | GELF Version1x1 host short Nothing Nothing Nothing Nothing Nothing |