postgres-haskell/postgres-wire
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This commit is contained in:
VyacheslavHashov 2017-02-08 18:36:18 +03:00
parent f7ed159216
commit 4ac1d9f9d3
1 changed files with 80 additions and 68 deletions
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148
src/Database/PostgreSQL/Protocol/Types.hs
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@ -1,6 +1,7 @@
module Database.PostgreSQL.Protocol.Types where module Database.PostgreSQL.Protocol.Types where
-- TODO -- Exports all declared datatypes
--
-- * COPY subprotocol commands -- * COPY subprotocol commands
-- --
-- * function call, is deprecated by postgres -- * function call, is deprecated by postgres
@ -28,14 +29,19 @@ newtype DatabaseName = DatabaseName ByteString deriving (Show)
newtype MD5Salt = MD5Salt ByteString deriving (Show) newtype MD5Salt = MD5Salt ByteString deriving (Show)
data PasswordText data PasswordText
= PasswordPlain ByteString = PasswordPlain !ByteString
| PasswordMD5 ByteString | PasswordMD5 !ByteString
deriving (Show) deriving (Show)
newtype ServerProcessId = ServerProcessId Int32 deriving (Show) newtype ServerProcessId = ServerProcessId Int32 deriving (Show)
newtype ServerSecretKey = ServerSecretKey Int32 deriving (Show) newtype ServerSecretKey = ServerSecretKey Int32 deriving (Show)
newtype RowsCount = RowsCount Word deriving (Show) -- | Server version contains major, minor, revision numbers.
-- Examples:
-- 9.6.0 ServerVersion 9 6 0 ""
-- 10.1beta2 - ServerVersion 10 1 0 "beta2"
data ServerVersion = ServerVersion !Word8 !Word8 !Word8 !ByteString
deriving (Eq, Show)
-- | Maximum number of rows to return, if portal contains a query that -- | Maximum number of rows to return, if portal contains a query that
-- returns rows (ignored otherwise). Zero denotes "no limit". -- returns rows (ignored otherwise). Zero denotes "no limit".
@ -60,13 +66,9 @@ data CommandResult
| CommandOk | CommandOk
deriving (Show) deriving (Show)
-- | Server version contains major, minor, revision numbers. newtype RowsCount = RowsCount Word deriving (Show)
-- Examples:
-- 9.6.0 ServerVersion 9 6 0 ""
-- 10.1beta2 - ServerVersion 10 1 0 "beta2"
data ServerVersion = ServerVersion Word8 Word8 Word8 ByteString
deriving (Eq, Show)
-- | Status of transaction block returned by ReadyForQuery.
data TransactionStatus data TransactionStatus
-- | not in a transaction block -- | not in a transaction block
= TransactionIdle = TransactionIdle
@ -77,28 +79,32 @@ data TransactionStatus
| TransactionFailed | TransactionFailed
deriving (Show) deriving (Show)
-- | Format of query parameters and returned values.
data Format = Text | Binary data Format = Text | Binary
deriving (Show) deriving (Show)
-- All the commands have the same names as presented in the official -- All the commands have the same names as presented in the official
-- postgres documentation except explicit exclusions. -- postgres documentation except explicit exclusions.
--
-- | Messages that client can issue at the startup phase.
data StartMessage data StartMessage
= StartupMessage Username DatabaseName = StartupMessage !Username !DatabaseName
| SSLRequest | SSLRequest
deriving (Show) deriving (Show)
-- | Server responses to startup messages.
data AuthResponse data AuthResponse
= AuthenticationOk = AuthenticationOk
| AuthenticationCleartextPassword | AuthenticationCleartextPassword
| AuthenticationMD5Password MD5Salt | AuthenticationMD5Password !MD5Salt
| AuthenticationGSS | AuthenticationGSS
| AuthenticationSSPI | AuthenticationSSPI
| AuthenticationGSSContinue ByteString | AuthenticationGSSContinue !ByteString
-- same as ErrorResponse -- same as ErrorResponse
| AuthErrorResponse ErrorDesc | AuthErrorResponse !ErrorDesc
deriving (Show) deriving (Show)
-- | Messages that client can issue in usual query phase.
data ClientMessage data ClientMessage
= Bind !PortalName !StatementName = Bind !PortalName !StatementName
!Format -- parameter format code, one format for all !Format -- parameter format code, one format for all
@ -123,54 +129,58 @@ data ClientMessage
| Terminate | Terminate
deriving (Show) deriving (Show)
data CancelRequest = CancelRequest ServerProcessId ServerSecretKey -- | Message for canceling requests.
data CancelRequest = CancelRequest !ServerProcessId !ServerSecretKey
deriving (Show) deriving (Show)
-- | All possible responses from a server in usual query phase.
data ServerMessage data ServerMessage
= BackendKeyData ServerProcessId ServerSecretKey = BackendKeyData !ServerProcessId !ServerSecretKey
| BindComplete | BindComplete
| CloseComplete | CloseComplete
| CommandComplete CommandResult | CommandComplete CommandResult
| DataRow (Vector (Maybe ByteString)) -- Nothing shoulde be recognized as NULL | DataRow !(Vector (Maybe ByteString)) -- Nothing shoulde be recognized as NULL
| EmptyQueryResponse | EmptyQueryResponse
| ErrorResponse ErrorDesc | ErrorResponse !ErrorDesc
| NoData | NoData
| NoticeResponse NoticeDesc | NoticeResponse NoticeDesc
| NotificationResponse Notification | NotificationResponse !Notification
| ParameterDescription (Vector Oid) | ParameterDescription !(Vector Oid)
| ParameterStatus ByteString ByteString -- name and value | ParameterStatus !ByteString !ByteString -- name and value
| ParseComplete | ParseComplete
| PortalSuspended | PortalSuspended
| ReadForQuery TransactionStatus | ReadForQuery !TransactionStatus
| RowDescription (Vector FieldDescription) | RowDescription !(Vector FieldDescription)
deriving (Show) deriving (Show)
-- | Notification issued by `NOTIFY`.
data Notification = Notification data Notification = Notification
{ notificationProcessId :: ServerProcessId { notificationProcessId :: !ServerProcessId
, notificationChannel :: ChannelName , notificationChannel :: !ChannelName
, notificationPayload :: ByteString , notificationPayload :: !ByteString
} deriving (Show) } deriving (Show)
-- | Field description returned on describe statement message.
data FieldDescription = FieldDescription { data FieldDescription = FieldDescription {
-- | the field name -- | the field name
fieldName :: ByteString fieldName :: !ByteString
-- | If the field can be identified as a column of a specific table, -- | If the field can be identified as a column of a specific table,
-- the object ID of the table; otherwise zero. -- the object ID of the table; otherwise zero.
, fieldTableOid :: Oid , fieldTableOid :: !Oid
-- | If the field can be identified as a column of a specific table, -- | If the field can be identified as a column of a specific table,
-- the attribute number of the column; otherwise zero. -- the attribute number of the column; otherwise zero.
, fieldColumnNumber :: Int16 , fieldColumnNumber :: !Int16
-- | The object ID of the field's data type. -- | The object ID of the field's data type.
, fieldTypeOid :: Oid , fieldTypeOid :: !Oid
-- | The data type size (see pg_type.typlen). Note that negative -- | The data type size (see pg_type.typlen). Note that negative
-- values denote variable-width types. -- values denote variable-width types.
, fieldSize :: Int16 , fieldSize :: !Int16
-- | The type modifier (see pg_attribute.atttypmod). -- | The type modifier (see pg_attribute.atttypmod).
, fieldMode :: Int32 , fieldMode :: !Int32
-- | The format code being used for the field. In a RowDescription -- | The format code being used for the field. In a RowDescription
-- returned from the statement variant of Describe, the format code -- returned from the statement variant of Describe, the format code
-- is not yet known and will always be zero. -- is not yet known and will always be zero.
, fieldFormat :: Format , fieldFormat :: !Format
} deriving (Show) } deriving (Show)
data ErrorSeverity data ErrorSeverity
@ -189,43 +199,45 @@ data NoticeSeverity
| UnknownNoticeSeverity | UnknownNoticeSeverity
deriving (Show, Eq) deriving (Show, Eq)
-- | Information about ErrorResponse.
data ErrorDesc = ErrorDesc data ErrorDesc = ErrorDesc
{ errorSeverity :: ErrorSeverity { errorSeverity :: !ErrorSeverity
, errorCode :: ByteString , errorCode :: !ByteString
, errorMessage :: ByteString , errorMessage :: !ByteString
, errorDetail :: Maybe ByteString , errorDetail :: !Maybe ByteString
, errorHint :: Maybe ByteString , errorHint :: !Maybe ByteString
, errorPosition :: Maybe Int , errorPosition :: !Maybe Int
, errorInternalPosition :: Maybe Int , errorInternalPosition :: !Maybe Int
, errorInternalQuery :: Maybe ByteString , errorInternalQuery :: !Maybe ByteString
, errorContext :: Maybe ByteString , errorContext :: !Maybe ByteString
, errorSchema :: Maybe ByteString , errorSchema :: !Maybe ByteString
, errorTable :: Maybe ByteString , errorTable :: !Maybe ByteString
, errorColumn :: Maybe ByteString , errorColumn :: !Maybe ByteString
, errorDataType :: Maybe ByteString , errorDataType :: !Maybe ByteString
, errorConstraint :: Maybe ByteString , errorConstraint :: !Maybe ByteString
, errorSourceFilename :: Maybe ByteString , errorSourceFilename :: !Maybe ByteString
, errorSourceLine :: Maybe Int , errorSourceLine :: !Maybe Int
, errorSourceRoutine :: Maybe ByteString , errorSourceRoutine :: !Maybe ByteString
} deriving (Show) } deriving (Show)
-- | Information about NoticeResponse.
data NoticeDesc = NoticeDesc data NoticeDesc = NoticeDesc
{ noticeSeverity :: NoticeSeverity { noticeSeverity :: !NoticeSeverity
, noticeCode :: ByteString , noticeCode :: !ByteString
, noticeMessage :: ByteString , noticeMessage :: !ByteString
, noticeDetail :: Maybe ByteString , noticeDetail :: !Maybe ByteString
, noticeHint :: Maybe ByteString , noticeHint :: !Maybe ByteString
, noticePosition :: Maybe Int , noticePosition :: !Maybe Int
, noticeInternalPosition :: Maybe Int , noticeInternalPosition :: !Maybe Int
, noticeInternalQuery :: Maybe ByteString , noticeInternalQuery :: !Maybe ByteString
, noticeContext :: Maybe ByteString , noticeContext :: !Maybe ByteString
, noticeSchema :: Maybe ByteString , noticeSchema :: !Maybe ByteString
, noticeTable :: Maybe ByteString , noticeTable :: !Maybe ByteString
, noticeColumn :: Maybe ByteString , noticeColumn :: !Maybe ByteString
, noticeDataType :: Maybe ByteString , noticeDataType :: !Maybe ByteString
, noticeConstraint :: Maybe ByteString , noticeConstraint :: !Maybe ByteString
, noticeSourceFilename :: Maybe ByteString , noticeSourceFilename :: !Maybe ByteString
, noticeSourceLine :: Maybe Int , noticeSourceLine :: !Maybe Int
, noticeSourceRoutine :: Maybe ByteString , noticeSourceRoutine :: !Maybe ByteString
} deriving (Show) } deriving (Show)