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qemu: json: Extract gathering of block statistics

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The code is useful also when gathering statistics per node name, so
extract it to a separate functions.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Peter Krempa 2017-07-31 14:35:45 +02:00
parent 50edca1331
commit 8d9ca6cdb3
1 changed files with 35 additions and 16 deletions
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51
src/qemu/qemu_monitor_json.c
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@ -2277,26 +2277,15 @@ int qemuMonitorJSONGetBlockInfo(qemuMonitorPtr mon,
}
static int
qemuMonitorJSONGetOneBlockStatsInfo(virJSONValuePtr dev,
const char *dev_name,
int depth,
virHashTablePtr hash,
bool backingChain)
static qemuBlockStatsPtr
qemuMonitorJSONBlockStatsCollectData(virJSONValuePtr dev,
int *nstats)
{
qemuBlockStatsPtr bstats = NULL;
virJSONValuePtr stats;
qemuBlockStatsPtr ret = NULL;
virJSONValuePtr parent;
virJSONValuePtr parentstats;
int ret = -1;
int nstats = 0;
char *entry_name = qemuDomainStorageAlias(dev_name, depth);
virJSONValuePtr backing;
if (!entry_name)
goto cleanup;
if (VIR_ALLOC(bstats) < 0)
goto cleanup;
virJSONValuePtr stats;
if ((stats = virJSONValueObjectGetObject(dev, "stats")) == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@ -2305,6 +2294,9 @@ qemuMonitorJSONGetOneBlockStatsInfo(virJSONValuePtr dev,
goto cleanup;
}
if (VIR_ALLOC(bstats) < 0)
goto cleanup;
#define QEMU_MONITOR_BLOCK_STAT_GET(NAME, VAR, MANDATORY) \
if (MANDATORY || virJSONValueObjectHasKey(stats, NAME)) { \
nstats++; \
@ -2331,6 +2323,33 @@ qemuMonitorJSONGetOneBlockStatsInfo(virJSONValuePtr dev,
bstats->wr_highest_offset_valid = true;
}
VIR_STEAL_PTR(ret, bstats);
cleanup:
VIR_FREE(bstats);
return ret;
}
static int
qemuMonitorJSONGetOneBlockStatsInfo(virJSONValuePtr dev,
const char *dev_name,
int depth,
virHashTablePtr hash,
bool backingChain)
{
qemuBlockStatsPtr bstats = NULL;
int ret = -1;
int nstats = 0;
char *entry_name = qemuDomainStorageAlias(dev_name, depth);
virJSONValuePtr backing;
if (!entry_name)
goto cleanup;
if (!(bstats = qemuMonitorJSONBlockStatsCollectData(dev, &nstats)))
goto cleanup;
if (virHashAddEntry(hash, entry_name, bstats) < 0)
goto cleanup;
bstats = NULL;