root / htools / Ganeti / Jobs.hs @ d6cf394e
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{-| Implementation of the job information. |
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-} |
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{- |
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Copyright (C) 2009, 2010, 2011 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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|
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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.Jobs |
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( OpStatus(..) |
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, JobStatus(..) |
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) where |
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import Text.JSON (readJSON, showJSON, JSON) |
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import qualified Text.JSON as J |
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import qualified Ganeti.Constants as C |
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-- | Our ADT for the OpCode status at runtime (while in a job). |
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data OpStatus = OP_STATUS_QUEUED |
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| OP_STATUS_WAITLOCK |
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| OP_STATUS_CANCELING |
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| OP_STATUS_RUNNING |
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| OP_STATUS_CANCELED |
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| OP_STATUS_SUCCESS |
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| OP_STATUS_ERROR |
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deriving (Eq, Enum, Bounded, Show, Read) |
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instance JSON OpStatus where |
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showJSON os = showJSON w |
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where w = case os of |
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OP_STATUS_QUEUED -> C.jobStatusQueued |
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OP_STATUS_WAITLOCK -> C.jobStatusWaitlock |
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OP_STATUS_CANCELING -> C.jobStatusCanceling |
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OP_STATUS_RUNNING -> C.jobStatusRunning |
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OP_STATUS_CANCELED -> C.jobStatusCanceled |
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OP_STATUS_SUCCESS -> C.jobStatusSuccess |
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OP_STATUS_ERROR -> C.jobStatusError |
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readJSON s = case readJSON s of |
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J.Ok v | v == C.jobStatusQueued -> J.Ok OP_STATUS_QUEUED |
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| v == C.jobStatusWaitlock -> J.Ok OP_STATUS_WAITLOCK |
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| v == C.jobStatusCanceling -> J.Ok OP_STATUS_CANCELING |
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| v == C.jobStatusRunning -> J.Ok OP_STATUS_RUNNING |
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| v == C.jobStatusCanceled -> J.Ok OP_STATUS_CANCELED |
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| v == C.jobStatusSuccess -> J.Ok OP_STATUS_SUCCESS |
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| v == C.jobStatusError -> J.Ok OP_STATUS_ERROR |
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| otherwise -> J.Error ("Unknown opcode status " ++ v) |
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_ -> J.Error ("Cannot parse opcode status " ++ show s) |
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-- | The JobStatus data type. Note that this is ordered especially |
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-- such that greater\/lesser comparison on values of this type makes |
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-- sense. |
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data JobStatus = JOB_STATUS_QUEUED |
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| JOB_STATUS_WAITLOCK |
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| JOB_STATUS_RUNNING |
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| JOB_STATUS_SUCCESS |
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| JOB_STATUS_CANCELING |
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| JOB_STATUS_CANCELED |
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| JOB_STATUS_ERROR |
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deriving (Eq, Enum, Ord, Bounded, Show, Read) |
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instance JSON JobStatus where |
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showJSON js = showJSON w |
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where w = case js of |
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JOB_STATUS_QUEUED -> "queued" |
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JOB_STATUS_WAITLOCK -> "waiting" |
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JOB_STATUS_CANCELING -> "canceling" |
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JOB_STATUS_RUNNING -> "running" |
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JOB_STATUS_CANCELED -> "canceled" |
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JOB_STATUS_SUCCESS -> "success" |
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JOB_STATUS_ERROR -> "error" |
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readJSON s = case readJSON s of |
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J.Ok "queued" -> J.Ok JOB_STATUS_QUEUED |
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J.Ok "waiting" -> J.Ok JOB_STATUS_WAITLOCK |
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J.Ok "canceling" -> J.Ok JOB_STATUS_CANCELING |
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J.Ok "running" -> J.Ok JOB_STATUS_RUNNING |
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J.Ok "success" -> J.Ok JOB_STATUS_SUCCESS |
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J.Ok "canceled" -> J.Ok JOB_STATUS_CANCELED |
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J.Ok "error" -> J.Ok JOB_STATUS_ERROR |
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_ -> J.Error ("Unknown job status " ++ show s) |