Add helper function to indicate the error cause
Signed-off-by: Penghui Liao <liaoishere@gmail.com>
This commit is contained in:
Penghui Liao
parent
be723e47ed
commit
482640a285
190
const.gen.go
190
const.gen.go
@ -1963,3 +1963,193 @@ const (
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StreamEventError StreamEventType = 4
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StreamEventHangup StreamEventType = 8
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)
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// ErrorLevel as declared in libvirt/virterror.h:44
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type ErrorLevel int32
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// ErrorLevel enumeration from libvirt/virterror.h:44
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const (
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ErrNone ErrorLevel = iota
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ErrWarning ErrorLevel = 1
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ErrError ErrorLevel = 2
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)
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// ErrorDomain as declared in libvirt/virterror.h:139
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type ErrorDomain int32
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// ErrorDomain enumeration from libvirt/virterror.h:139
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const (
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FromNone ErrorDomain = iota
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FromXen ErrorDomain = 1
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FromXend ErrorDomain = 2
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FromXenstore ErrorDomain = 3
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FromSexpr ErrorDomain = 4
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FromXML ErrorDomain = 5
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FromDom ErrorDomain = 6
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FromRPC ErrorDomain = 7
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FromProxy ErrorDomain = 8
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FromConf ErrorDomain = 9
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FromQemu ErrorDomain = 10
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FromNet ErrorDomain = 11
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FromTest ErrorDomain = 12
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FromRemote ErrorDomain = 13
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FromOpenvz ErrorDomain = 14
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FromXenxm ErrorDomain = 15
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FromStatsLinux ErrorDomain = 16
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FromLxc ErrorDomain = 17
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FromStorage ErrorDomain = 18
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FromNetwork ErrorDomain = 19
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FromDomain ErrorDomain = 20
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FromUml ErrorDomain = 21
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FromNodedev ErrorDomain = 22
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FromXenInotify ErrorDomain = 23
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FromSecurity ErrorDomain = 24
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FromVbox ErrorDomain = 25
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FromInterface ErrorDomain = 26
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FromOne ErrorDomain = 27
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FromEsx ErrorDomain = 28
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FromPhyp ErrorDomain = 29
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FromSecret ErrorDomain = 30
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FromCPU ErrorDomain = 31
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FromXenapi ErrorDomain = 32
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FromNwfilter ErrorDomain = 33
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FromHook ErrorDomain = 34
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FromDomainSnapshot ErrorDomain = 35
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FromAudit ErrorDomain = 36
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FromSysinfo ErrorDomain = 37
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FromStreams ErrorDomain = 38
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FromVmware ErrorDomain = 39
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FromEvent ErrorDomain = 40
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FromLibxl ErrorDomain = 41
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FromLocking ErrorDomain = 42
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FromHyperv ErrorDomain = 43
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FromCapabilities ErrorDomain = 44
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FromURI ErrorDomain = 45
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FromAuth ErrorDomain = 46
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FromDbus ErrorDomain = 47
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FromParallels ErrorDomain = 48
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FromDevice ErrorDomain = 49
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FromSSH ErrorDomain = 50
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FromLockspace ErrorDomain = 51
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FromInitctl ErrorDomain = 52
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FromIdentity ErrorDomain = 53
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FromCgroup ErrorDomain = 54
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FromAccess ErrorDomain = 55
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FromSystemd ErrorDomain = 56
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FromBhyve ErrorDomain = 57
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FromCrypto ErrorDomain = 58
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FromFirewall ErrorDomain = 59
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FromPolkit ErrorDomain = 60
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FromThread ErrorDomain = 61
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FromAdmin ErrorDomain = 62
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FromLogging ErrorDomain = 63
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FromXenxl ErrorDomain = 64
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FromPerf ErrorDomain = 65
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FromLibssh ErrorDomain = 66
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)
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// ErrorNumber as declared in libvirt/virterror.h:322
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type ErrorNumber int32
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// ErrorNumber enumeration from libvirt/virterror.h:322
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const (
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ErrOk ErrorNumber = iota
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ErrInternalError ErrorNumber = 1
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ErrNoMemory ErrorNumber = 2
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ErrNoSupport ErrorNumber = 3
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ErrUnknownHost ErrorNumber = 4
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ErrNoConnect ErrorNumber = 5
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ErrInvalidConn ErrorNumber = 6
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ErrInvalidDomain ErrorNumber = 7
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ErrInvalidArg ErrorNumber = 8
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ErrOperationFailed ErrorNumber = 9
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ErrGetFailed ErrorNumber = 10
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ErrPostFailed ErrorNumber = 11
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ErrHTTPError ErrorNumber = 12
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ErrSexprSerial ErrorNumber = 13
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ErrNoXen ErrorNumber = 14
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ErrXenCall ErrorNumber = 15
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ErrOsType ErrorNumber = 16
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ErrNoKernel ErrorNumber = 17
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ErrNoRoot ErrorNumber = 18
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ErrNoSource ErrorNumber = 19
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ErrNoTarget ErrorNumber = 20
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ErrNoName ErrorNumber = 21
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ErrNoOs ErrorNumber = 22
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ErrNoDevice ErrorNumber = 23
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ErrNoXenstore ErrorNumber = 24
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ErrDriverFull ErrorNumber = 25
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ErrCallFailed ErrorNumber = 26
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ErrXMLError ErrorNumber = 27
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ErrDomExist ErrorNumber = 28
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ErrOperationDenied ErrorNumber = 29
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ErrOpenFailed ErrorNumber = 30
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ErrReadFailed ErrorNumber = 31
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ErrParseFailed ErrorNumber = 32
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ErrConfSyntax ErrorNumber = 33
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ErrWriteFailed ErrorNumber = 34
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ErrXMLDetail ErrorNumber = 35
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ErrInvalidNetwork ErrorNumber = 36
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ErrNetworkExist ErrorNumber = 37
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ErrSystemError ErrorNumber = 38
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ErrRPC ErrorNumber = 39
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ErrGnutlsError ErrorNumber = 40
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WarNoNetwork ErrorNumber = 41
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ErrNoDomain ErrorNumber = 42
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ErrNoNetwork ErrorNumber = 43
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ErrInvalidMac ErrorNumber = 44
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ErrAuthFailed ErrorNumber = 45
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ErrInvalidStoragePool ErrorNumber = 46
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ErrInvalidStorageVol ErrorNumber = 47
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WarNoStorage ErrorNumber = 48
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ErrNoStoragePool ErrorNumber = 49
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ErrNoStorageVol ErrorNumber = 50
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WarNoNode ErrorNumber = 51
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ErrInvalidNodeDevice ErrorNumber = 52
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ErrNoNodeDevice ErrorNumber = 53
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ErrNoSecurityModel ErrorNumber = 54
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ErrOperationInvalid ErrorNumber = 55
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WarNoInterface ErrorNumber = 56
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ErrNoInterface ErrorNumber = 57
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ErrInvalidInterface ErrorNumber = 58
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ErrMultipleInterfaces ErrorNumber = 59
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WarNoNwfilter ErrorNumber = 60
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ErrInvalidNwfilter ErrorNumber = 61
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ErrNoNwfilter ErrorNumber = 62
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ErrBuildFirewall ErrorNumber = 63
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WarNoSecret ErrorNumber = 64
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ErrInvalidSecret ErrorNumber = 65
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ErrNoSecret ErrorNumber = 66
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ErrConfigUnsupported ErrorNumber = 67
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ErrOperationTimeout ErrorNumber = 68
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ErrMigratePersistFailed ErrorNumber = 69
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ErrHookScriptFailed ErrorNumber = 70
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ErrInvalidDomainSnapshot ErrorNumber = 71
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ErrNoDomainSnapshot ErrorNumber = 72
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ErrInvalidStream ErrorNumber = 73
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ErrArgumentUnsupported ErrorNumber = 74
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ErrStorageProbeFailed ErrorNumber = 75
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ErrStoragePoolBuilt ErrorNumber = 76
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ErrSnapshotRevertRisky ErrorNumber = 77
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ErrOperationAborted ErrorNumber = 78
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ErrAuthCancelled ErrorNumber = 79
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ErrNoDomainMetadata ErrorNumber = 80
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ErrMigrateUnsafe ErrorNumber = 81
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ErrOverflow ErrorNumber = 82
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ErrBlockCopyActive ErrorNumber = 83
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ErrOperationUnsupported ErrorNumber = 84
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ErrSSH ErrorNumber = 85
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ErrAgentUnresponsive ErrorNumber = 86
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ErrResourceBusy ErrorNumber = 87
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ErrAccessDenied ErrorNumber = 88
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ErrDbusService ErrorNumber = 89
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ErrStorageVolExist ErrorNumber = 90
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ErrCPUIncompatible ErrorNumber = 91
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ErrXMLInvalidSchema ErrorNumber = 92
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ErrMigrateFinishOk ErrorNumber = 93
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ErrAuthUnavailable ErrorNumber = 94
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ErrNoServer ErrorNumber = 95
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ErrNoClient ErrorNumber = 96
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ErrAgentUnsynced ErrorNumber = 97
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ErrLibssh ErrorNumber = 98
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)
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@ -30,6 +30,7 @@ PARSER:
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IncludePaths: [./lv_source/include]
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SourcesPaths:
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- libvirt/libvirt.h
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- libvirt/virterror.h
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TRANSLATOR:
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ConstRules:
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@ -52,6 +53,9 @@ TRANSLATOR:
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- {action: replace, from: "Uri([A-Z]|$)", to: "URI$1"}
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- {action: replace, from: "Vcpu([A-Z]|$)", to: "VCPU$1"}
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- {action: replace, from: "Xml([A-Z]|$)", to: "XML$1"}
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- {action: replace, from: "Rpc([A-Z]|$)", to: "RPC$1"}
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- {action: replace, from: "Ssh([A-Z]|$)", to: "SSH$1"}
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- {action: replace, from: "Http([A-Z]|$)", to: "HTTP$1"}
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const:
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- {action: accept, from: "^VIR_"}
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# Special case to prevent a collision with a type:
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25
rpc.go
25
rpc.go
@ -18,6 +18,7 @@ import (
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"bytes"
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"encoding/binary"
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"errors"
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"fmt"
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"io"
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"strings"
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"sync/atomic"
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@ -113,6 +114,28 @@ type libvirtError struct {
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Level uint32
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}
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func (e libvirtError) Error() string {
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return fmt.Sprintf("%s, code: %d, domain id: %d", e.Message, e.Code, e.DomainID)
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}
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func checkError(err error, expectedError ErrorNumber) bool {
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e, ok := err.(libvirtError)
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if ok {
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return e.Code == uint32(expectedError)
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}
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return false
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}
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// ErrIsNotFound detects libvirt's ERR_NO_DOMAIN.
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func ErrIsNotFound(err error) bool {
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return checkError(err, ErrNoDomain)
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}
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// ErrIsOK detects libvirt's ERR_OK.
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func ErrIsOK(err error) bool {
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return checkError(err, ErrOk)
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}
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// listen processes incoming data and routes
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// responses to their respective callback handler.
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func (l *Libvirt) listen() {
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@ -329,7 +352,7 @@ func decodeError(buf []byte) error {
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return ErrUnsupported
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}
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return errors.New(e.Message)
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return e
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}
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// decodeEvent extracts an event from the given byte slice.
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40
rpc_test.go
40
rpc_test.go
@ -89,7 +89,7 @@ var (
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}
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testErrorMessage = []byte{
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0x00, 0x00, 0x00, 0x37, // code
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0x00, 0x00, 0x00, 0x37, // code (55, ErrOperationInvalid)
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0x00, 0x00, 0x00, 0x0a, // domain id
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// message ("Requested operation is not valid: domain is not running")
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@ -106,6 +106,25 @@ var (
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0x00, 0x00, 0x00, 0x02,
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}
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testErrorNotFoundMessage = []byte{
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0x00, 0x00, 0x00, 0x2a, // code (42 ErrDoDmain)
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0x00, 0x00, 0x00, 0x0a, // domain id
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// message
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0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x38,
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0x44, 0x6f, 0x6d, 0x61, 0x69, 0x6e, 0x20, 0x6e,
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0x6f, 0x74, 0x20, 0x66, 0x6f, 0x75, 0x6e, 0x64,
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0x3a, 0x20, 0x6e, 0x6f, 0x20, 0x64, 0x6f, 0x6d,
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0x61, 0x69, 0x6e, 0x20, 0x77, 0x69, 0x74, 0x68,
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0x20, 0x6d, 0x61, 0x74, 0x63, 0x68, 0x69, 0x6e,
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0x67, 0x20, 0x6e, 0x61, 0x6d, 0x65, 0x20, 0x27,
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0x74, 0x65, 0x73, 0x74, 0x2d, 0x2d, 0x2d, 0x27,
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0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00,
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// error level
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0x00, 0x00, 0x00, 0x01,
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}
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testDomain = &Domain{
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Name: "test-domain",
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UUID: testUUID,
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@ -204,11 +223,24 @@ func TestDecodeEvent(t *testing.T) {
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}
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func TestDecodeError(t *testing.T) {
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expected := "Requested operation is not valid: domain is not running"
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expectedMsg := "Requested operation is not valid: domain is not running"
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expectedCode := ErrOperationInvalid
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err := decodeError(testErrorMessage)
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if err.Error() != expected {
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t.Errorf("expected error %s, got %s", expected, err.Error())
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e := err.(libvirtError)
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if e.Message != expectedMsg {
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t.Errorf("expected error message %s, got %s", expectedMsg, err.Error())
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}
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if e.Code != uint32(expectedCode) {
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t.Errorf("expected code %d, got %d", expectedCode, e.Code)
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}
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}
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func TestErrNotFound(t *testing.T) {
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err := decodeError(testErrorNotFoundMessage)
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ok := ErrIsNotFound(err)
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if !ok {
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t.Errorf("expected true, got %t", ok)
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}
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}
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