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{-# LANGUAGE TemplateHaskell #-}
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{-| Implementation of the Ganeti confd types.
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-}
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{-
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Copyright (C) 2011, 2012 Google Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA.
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-}
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module Ganeti.Confd
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( C.confdProtocolVersion
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, C.confdMaxClockSkew
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, C.confdConfigReloadTimeout
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, C.confdConfigReloadRatelimit
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, C.confdMagicFourcc
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, C.confdDefaultReqCoverage
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, C.confdClientExpireTimeout
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, C.maxUdpDataSize
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, ConfdRequestType(..)
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, ConfdReqQ(..)
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, ConfdReqField(..)
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, ConfdReplyStatus(..)
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, ConfdNodeRole(..)
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, ConfdErrorType(..)
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, ConfdRequest(..)
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, ConfdReply(..)
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, ConfdQuery(..)
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, SignedMessage(..)
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) where
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import Text.JSON
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import qualified Ganeti.Constants as C
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import Ganeti.THH
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import Ganeti.HTools.JSON
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{-
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Note that we re-export as is from Constants the following simple items:
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- confdProtocolVersion
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- confdMaxClockSkew
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- confdConfigReloadTimeout
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- confdConfigReloadRatelimit
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- confdMagicFourcc
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- confdDefaultReqCoverage
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- confdClientExpireTimeout
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- maxUdpDataSize
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-}
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$(declareIADT "ConfdRequestType"
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[ ("ReqPing", 'C.confdReqPing )
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, ("ReqNodeRoleByName", 'C.confdReqNodeRoleByname )
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, ("ReqNodePipList", 'C.confdReqNodePipList )
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, ("ReqNodePipByInstPip", 'C.confdReqNodePipByInstanceIp )
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, ("ReqClusterMaster", 'C.confdReqClusterMaster )
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, ("ReqMcPipList", 'C.confdReqMcPipList )
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, ("ReqInstIpsList", 'C.confdReqInstancesIpsList )
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])
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$(makeJSONInstance ''ConfdRequestType)
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$(declareSADT "ConfdReqField"
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[ ("ReqFieldName", 'C.confdReqfieldName )
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, ("ReqFieldIp", 'C.confdReqfieldIp )
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, ("ReqFieldMNodePip", 'C.confdReqfieldMnodePip )
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])
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$(makeJSONInstance ''ConfdReqField)
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-- Confd request query fields. These are used to narrow down queries.
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-- These must be strings rather than integers, because json-encoding
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-- converts them to strings anyway, as they're used as dict-keys.
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$(buildObject "ConfdReqQ" "confdReqQ"
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[ renameField "Ip" $
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optionalField $ simpleField C.confdReqqIp [t| String |]
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, renameField "IpList" $
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defaultField [| [] |] $
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simpleField C.confdReqqIplist [t| [String] |]
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, renameField "Link" $ optionalField $
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simpleField C.confdReqqLink [t| String |]
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, renameField "Fields" $ defaultField [| [] |] $
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simpleField C.confdReqqFields [t| [ConfdReqField] |]
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])
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-- | Confd query type. This is complex enough that we can't
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-- automatically derive it via THH.
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data ConfdQuery = EmptyQuery
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| PlainQuery String
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| DictQuery ConfdReqQ
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deriving (Show, Read, Eq)
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instance JSON ConfdQuery where
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readJSON o = case o of
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JSNull -> return EmptyQuery
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JSString s -> return . PlainQuery . fromJSString $ s
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JSObject _ -> fmap DictQuery (readJSON o::Result ConfdReqQ)
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_ -> fail $ "Cannot deserialise into ConfdQuery\
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\ the value '" ++ show o ++ "'"
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showJSON cq = case cq of
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EmptyQuery -> JSNull
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PlainQuery s -> showJSON s
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DictQuery drq -> showJSON drq
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$(declareIADT "ConfdReplyStatus"
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[ ( "ReplyStatusOk", 'C.confdReplStatusOk )
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, ( "ReplyStatusError", 'C.confdReplStatusError )
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, ( "ReplyStatusNotImpl", 'C.confdReplStatusNotimplemented )
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])
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$(makeJSONInstance ''ConfdReplyStatus)
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$(declareIADT "ConfdNodeRole"
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[ ( "NodeRoleMaster", 'C.confdNodeRoleMaster )
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, ( "NodeRoleCandidate", 'C.confdNodeRoleCandidate )
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, ( "NodeRoleOffline", 'C.confdNodeRoleOffline )
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, ( "NodeRoleDrained", 'C.confdNodeRoleDrained )
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, ( "NodeRoleRegular", 'C.confdNodeRoleRegular )
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])
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$(makeJSONInstance ''ConfdNodeRole)
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-- Note that the next item is not a frozenset in Python, but we make
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-- it a separate type for safety
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$(declareIADT "ConfdErrorType"
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[ ( "ConfdErrorUnknownEntry", 'C.confdErrorUnknownEntry )
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, ( "ConfdErrorInternal", 'C.confdErrorInternal )
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, ( "ConfdErrorArgument", 'C.confdErrorArgument )
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])
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$(makeJSONInstance ''ConfdErrorType)
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$(buildObject "ConfdRequest" "confdRq" $
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[ simpleField "protocol" [t| Int |]
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, simpleField "type" [t| ConfdRequestType |]
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, defaultField [| EmptyQuery |] $ simpleField "query" [t| ConfdQuery |]
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, simpleField "rsalt" [t| String |]
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])
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$(buildObject "ConfdReply" "confdReply"
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[ simpleField "protocol" [t| Int |]
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, simpleField "status" [t| ConfdReplyStatus |]
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, simpleField "answer" [t| JSValue |]
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, simpleField "serial" [t| Int |]
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])
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$(buildObject "SignedMessage" "signedMsg"
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[ simpleField "hmac" [t| String |]
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, simpleField "msg" [t| String |]
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, simpleField "salt" [t| String |]
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])
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