[libvirt] [PATCH 52/68] qemu: Move migration parameters JSON formatting

We want to have all migration parameters parsing and formatting at one place, i.e., in qemu_migration_params.c. Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com&gt; --- src/qemu/qemu_migration_params.c | 68 +++++++++++++++++++++++++++++++- src/qemu/qemu_monitor.c | 35 ++++++++-------- src/qemu/qemu_monitor.h | 2 +- src/qemu/qemu_monitor_json.c | 56 ++------------------------ src/qemu/qemu_monitor_json.h | 2 +- 5 files changed, 89 insertions(+), 74 deletions(-) diff --git a/src/qemu/qemu_migration_params.c b/src/qemu/qemu_migration_params.c index 6908aef24d..0c8e44f644 100644 --- a/src/qemu/qemu_migration_params.c +++ b/src/qemu/qemu_migration_params.c @@ -372,6 +372,61 @@ qemuMigrationParamsFromJSON(virJSONValuePtr params) } +static virJSONValuePtr +qemuMigrationParamsToJSON(qemuMigrationParamsPtr migParams) +{ + virJSONValuePtr params = NULL; + + if (!(params = virJSONValueNewObject())) + return NULL; + +#define APPEND(VALID, API, VAR, FIELD) \ + do { \ + if (VALID && API(params, FIELD, migParams->params.VAR) < 0) \ + goto error; \ + } while (0) + +#define APPEND_INT(VAR, FIELD) \ + APPEND(migParams->params.VAR ## _set, \ + virJSONValueObjectAppendNumberInt, VAR, FIELD) + +#define APPEND_STR(VAR, FIELD) \ + APPEND(migParams->params.VAR, \ + virJSONValueObjectAppendString, VAR, FIELD) + +#define APPEND_ULONG(VAR, FIELD) \ + APPEND(migParams->params.VAR ## _set, \ + virJSONValueObjectAppendNumberUlong, VAR, FIELD) + +#define APPEND_BOOL(VAR, FIELD) \ + APPEND(migParams->params.VAR ## _set, \ + virJSONValueObjectAppendBoolean, VAR, FIELD) + + APPEND_INT(compressLevel, "compress-level"); + APPEND_INT(compressThreads, "compress-threads"); + APPEND_INT(decompressThreads, "decompress-threads"); + APPEND_INT(cpuThrottleInitial, "cpu-throttle-initial"); + APPEND_INT(cpuThrottleIncrement, "cpu-throttle-increment"); + APPEND_STR(tlsCreds, "tls-creds"); + APPEND_STR(tlsHostname, "tls-hostname"); + APPEND_ULONG(maxBandwidth, "max-bandwidth"); + APPEND_ULONG(downtimeLimit, "downtime-limit"); + APPEND_BOOL(blockIncremental, "block-incremental"); + APPEND_ULONG(xbzrleCacheSize, "xbzrle-cache-size"); + +#undef APPEND +#undef APPEND_INT +#undef APPEND_STR +#undef APPEND_ULONG + + return params; + + error: + virJSONValueFree(params); + return NULL; +} + + /** * qemuMigrationParamsApply * @driver: qemu driver @@ -391,6 +446,7 @@ qemuMigrationParamsApply(virQEMUDriverPtr driver, { qemuDomainObjPrivatePtr priv = vm->privateData; bool xbzrleCacheSize_old = false; + virJSONValuePtr params = NULL; int ret = -1; if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0) @@ -414,10 +470,16 @@ qemuMigrationParamsApply(virQEMUDriverPtr driver, migParams->params.xbzrleCacheSize_set = false; } - if (qemuMonitorSetMigrationParams(priv->mon, &migParams->params) < 0) + if (!(params = qemuMigrationParamsToJSON(migParams))) goto cleanup; - ret = 0; + if (virJSONValueObjectKeysNumber(params) == 0) { + ret = 0; + goto cleanup; + } + + ret = qemuMonitorSetMigrationParams(priv->mon, params); + params = NULL; cleanup: if (qemuDomainObjExitMonitor(driver, vm) < 0) @@ -426,6 +488,8 @@ qemuMigrationParamsApply(virQEMUDriverPtr driver, if (xbzrleCacheSize_old) migParams->params.xbzrleCacheSize_set = true; + virJSONValueFree(params); + return ret; } diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c index 411ce28787..641465f227 100644 --- a/src/qemu/qemu_monitor.c +++ b/src/qemu/qemu_monitor.c @@ -2642,29 +2642,28 @@ qemuMonitorGetMigrationParams(qemuMonitorPtr mon, return qemuMonitorJSONGetMigrationParams(mon, params); } + +/** + * qemuMonitorSetMigrationParams: + * @mon: Pointer to the monitor object. + * @params: Migration parameters. + * + * The @params object is consumed and should not be referenced by the caller + * after this function returns. + * + * Returns 0 on success, -1 on error. + */ int qemuMonitorSetMigrationParams(qemuMonitorPtr mon, - qemuMonitorMigrationParamsPtr params) + virJSONValuePtr params) { - VIR_DEBUG("compressLevel=%d:%d compressThreads=%d:%d " - "decompressThreads=%d:%d cpuThrottleInitial=%d:%d " - "cpuThrottleIncrement=%d:%d tlsCreds=%s tlsHostname=%s " - "maxBandwidth=%d:%llu downtimeLimit=%d:%llu " - "blockIncremental=%d:%d xbzrleCacheSize=%d:%llu", - params->compressLevel_set, params->compressLevel, - params->compressThreads_set, params->compressThreads, - params->decompressThreads_set, params->decompressThreads, - params->cpuThrottleInitial_set, params->cpuThrottleInitial, - params->cpuThrottleIncrement_set, params->cpuThrottleIncrement, - NULLSTR(params->tlsCreds), NULLSTR(params->tlsHostname), - params->maxBandwidth_set, params->maxBandwidth, - params->downtimeLimit_set, params->downtimeLimit, - params->blockIncremental_set, params->blockIncremental, - params->xbzrleCacheSize_set, params->xbzrleCacheSize); - - QEMU_CHECK_MONITOR_JSON(mon); + QEMU_CHECK_MONITOR_JSON_GOTO(mon, error); return qemuMonitorJSONSetMigrationParams(mon, params); + + error: + virJSONValueFree(params); + return -1; } diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h index 261f3192f5..fd3c767dcf 100644 --- a/src/qemu/qemu_monitor.h +++ b/src/qemu/qemu_monitor.h @@ -681,7 +681,7 @@ struct _qemuMonitorMigrationParams { int qemuMonitorGetMigrationParams(qemuMonitorPtr mon, virJSONValuePtr *params); int qemuMonitorSetMigrationParams(qemuMonitorPtr mon, - qemuMonitorMigrationParamsPtr params); + virJSONValuePtr params); typedef enum { QEMU_MONITOR_MIGRATION_STATUS_INACTIVE, diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index 7de1ade28e..b00bca7d46 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -2807,11 +2807,10 @@ qemuMonitorJSONGetMigrationParams(qemuMonitorPtr mon, int qemuMonitorJSONSetMigrationParams(qemuMonitorPtr mon, - qemuMonitorMigrationParamsPtr params) + virJSONValuePtr params) { int ret = -1; virJSONValuePtr cmd = NULL; - virJSONValuePtr args = NULL; virJSONValuePtr reply = NULL; if (!(cmd = virJSONValueNewObject())) @@ -2821,56 +2820,9 @@ qemuMonitorJSONSetMigrationParams(qemuMonitorPtr mon, "migrate-set-parameters") < 0) goto cleanup; - if (!(args = virJSONValueNewObject())) + if (virJSONValueObjectAppend(cmd, "arguments", params) < 0) goto cleanup; - -#define APPEND(VALID, API, VAR, FIELD) \ - do { \ - if (VALID && API(args, FIELD, params->VAR) < 0) \ - goto cleanup; \ - } while (0) - -#define APPEND_INT(VAR, FIELD) \ - APPEND(params->VAR ## _set, \ - virJSONValueObjectAppendNumberInt, VAR, FIELD) - -#define APPEND_STR(VAR, FIELD) \ - APPEND(params->VAR, \ - virJSONValueObjectAppendString, VAR, FIELD) - -#define APPEND_ULONG(VAR, FIELD) \ - APPEND(params->VAR ## _set, \ - virJSONValueObjectAppendNumberUlong, VAR, FIELD) - -#define APPEND_BOOL(VAR, FIELD) \ - APPEND(params->VAR ## _set, \ - virJSONValueObjectAppendBoolean, VAR, FIELD) - - APPEND_INT(compressLevel, "compress-level"); - APPEND_INT(compressThreads, "compress-threads"); - APPEND_INT(decompressThreads, "decompress-threads"); - APPEND_INT(cpuThrottleInitial, "cpu-throttle-initial"); - APPEND_INT(cpuThrottleIncrement, "cpu-throttle-increment"); - APPEND_STR(tlsCreds, "tls-creds"); - APPEND_STR(tlsHostname, "tls-hostname"); - APPEND_ULONG(maxBandwidth, "max-bandwidth"); - APPEND_ULONG(downtimeLimit, "downtime-limit"); - APPEND_BOOL(blockIncremental, "block-incremental"); - APPEND_ULONG(xbzrleCacheSize, "xbzrle-cache-size"); - -#undef APPEND -#undef APPEND_INT -#undef APPEND_STR -#undef APPEND_ULONG - - if (virJSONValueObjectKeysNumber(args) == 0) { - ret = 0; - goto cleanup; - } - - if (virJSONValueObjectAppend(cmd, "arguments", args) < 0) - goto cleanup; - args = NULL; + params = NULL; if (qemuMonitorJSONCommand(mon, cmd, &reply) < 0) goto cleanup; @@ -2881,7 +2833,7 @@ qemuMonitorJSONSetMigrationParams(qemuMonitorPtr mon, ret = 0; cleanup: virJSONValueFree(cmd); - virJSONValueFree(args); + virJSONValueFree(params); virJSONValueFree(reply); return ret; } diff --git a/src/qemu/qemu_monitor_json.h b/src/qemu/qemu_monitor_json.h index a52f0a1955..5ada38b9fa 100644 --- a/src/qemu/qemu_monitor_json.h +++ b/src/qemu/qemu_monitor_json.h @@ -137,7 +137,7 @@ int qemuMonitorJSONSetMigrationCacheSize(qemuMonitorPtr mon, int qemuMonitorJSONGetMigrationParams(qemuMonitorPtr mon, virJSONValuePtr *params); int qemuMonitorJSONSetMigrationParams(qemuMonitorPtr mon, - qemuMonitorMigrationParamsPtr params); + virJSONValuePtr params); int qemuMonitorJSONGetMigrationStats(qemuMonitorPtr mon, qemuMonitorMigrationStatsPtr stats, -- 2.17.0