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qemu: monitor: Extract handling of JSON block job error codes

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My intention is to split qemuMonitorJSONBlockJob() into simpler separate
functions for every block job type. Since the error handling code is the
same for all block jobs, this patch extracts the code into a separate
function that will later be reused in more places.

With the new helper qemuMonitorJSONErrorIsClass we can save a few
function calls as we can extract the error object once.
This commit is contained in:
Peter Krempa 2015-03-31 17:13:21 +02:00
parent 72613b18ac
commit 7db64d6b0a
1 changed files with 39 additions and 25 deletions
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64
src/qemu/qemu_monitor_json.c
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@ -4247,6 +4247,39 @@ qemuMonitorJSONBlockJobInfo(qemuMonitorPtr mon,
}
static int
qemuMonitorJSONBlockJobError(virJSONValuePtr reply,
const char *cmd_name,
const char *device)
{
virJSONValuePtr error;
if (!(error = virJSONValueObjectGet(reply, "error")))
return 0;
if (qemuMonitorJSONErrorIsClass(error, "DeviceNotActive")) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("No active operation on device: %s"), device);
} else if (qemuMonitorJSONErrorIsClass(error, "DeviceInUse")) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("Device %s in use"), device);
} else if (qemuMonitorJSONErrorIsClass(error, "NotSupported")) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("Operation is not supported for device: %s"), device);
} else if (qemuMonitorJSONErrorIsClass(error, "CommandNotFound")) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("Command '%s' is not found"), cmd_name);
} else {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected error: (%s) '%s'"),
NULLSTR(virJSONValueObjectGetString(error, "class")),
NULLSTR(virJSONValueObjectGetString(error, "desc")));
}
return -1;
}
/* speed is in bytes/sec */
int
qemuMonitorJSONBlockJob(qemuMonitorPtr mon,
@ -4317,34 +4350,15 @@ qemuMonitorJSONBlockJob(qemuMonitorPtr mon,
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (qemuMonitorJSONCommand(mon, cmd, &reply) < 0)
goto cleanup;
if (ret == 0 && virJSONValueObjectHasKey(reply, "error")) {
ret = -1;
if (qemuMonitorJSONHasError(reply, "DeviceNotActive")) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("No active operation on device: %s"),
device);
} else if (qemuMonitorJSONHasError(reply, "DeviceInUse")) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("Device %s in use"), device);
} else if (qemuMonitorJSONHasError(reply, "NotSupported")) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("Operation is not supported for device: %s"),
device);
} else if (qemuMonitorJSONHasError(reply, "CommandNotFound")) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("Command '%s' is not found"), cmd_name);
} else {
virJSONValuePtr error = virJSONValueObjectGet(reply, "error");
if (qemuMonitorJSONBlockJobError(reply, cmd_name, device) < 0)
goto cleanup;
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unexpected error: (%s) '%s'"),
NULLSTR(virJSONValueObjectGetString(error, "class")),
NULLSTR(virJSONValueObjectGetString(error, "desc")));
}
}
ret = 0;
cleanup:
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;