From: "Jorge Boncompte [DTI2]" <jorge@dti2.net> Monitoring app can't otherwise differentiate between a stopped domain or a nonexistent one. Signed-off-by: Jorge Boncompte [DTI2] <jorge@dti2.net> --- src/libvirtSnmp.c | 186 +++++++++++++++++++++++++++++++++++------------------ 1 file changed, 123 insertions(+), 63 deletions(-) diff --git a/src/libvirtSnmp.c b/src/libvirtSnmp.c index a9fa185..2bd8f01 100644 --- a/src/libvirtSnmp.c +++ b/src/libvirtSnmp.c @@ -113,6 +113,82 @@ out: return; } + +static int +insertGuest(netsnmp_container *container, virDomainPtr domain) +{ + int ret = 0; + virDomainInfo info; + libvirtGuestTable_rowreq_ctx *row_ctx = NULL; + const char *name = NULL; + unsigned char uuid[16]; + + if (-1 == virDomainGetInfo(domain, &info)) { + printf("Failed to get domain info\n"); + showError(conn); + ret = -1; + goto out; + } + + /* create new row in the container */ + row_ctx = libvirtGuestTable_allocate_rowreq_ctx(NULL); + if (!row_ctx) { + snmp_log(LOG_ERR, "Error creating row"); + ret = -1; + goto out; + } + + /* set the index of the row */ + ret = virDomainGetUUID(domain, uuid); + if (ret) { + snmp_log(LOG_ERR, "Cannot get UUID"); + libvirtGuestTable_release_rowreq_ctx(row_ctx); + ret = -1; + goto out; + } + if (MFD_SUCCESS != libvirtGuestTable_indexes_set(row_ctx, (char*) uuid, + sizeof(uuid))) { + snmp_log(LOG_ERR, "Error setting row index"); + libvirtGuestTable_release_rowreq_ctx(row_ctx); + ret = -1; + goto out; + } + + /* set the data */ + name = virDomainGetName(domain); + if (name) + row_ctx->data.libvirtGuestName = strdup(name); + else + row_ctx->data.libvirtGuestName = strdup(""); + if (!row_ctx->data.libvirtGuestName) { + snmp_log(LOG_ERR, "Not enough memory for domain name '%s'", name); + libvirtGuestTable_release_rowreq_ctx(row_ctx); + ret = -1; + goto out; + } + + row_ctx->data.libvirtGuestState = info.state; + row_ctx->data.libvirtGuestCpuCount = info.nrVirtCpu; + /* convert the memory to MiB */ + row_ctx->data.libvirtGuestMemoryCurrent = info.memory / 1024; + row_ctx->data.libvirtGuestMemoryLimit = info.maxMem / 1024; + row_ctx->data.libvirtGuestCpuTime.high = info.cpuTime >> 32; + row_ctx->data.libvirtGuestCpuTime.low = info.cpuTime & 0xFFFFFFFF; + + row_ctx->data.libvirtGuestRowStatus = ROWSTATUS_ACTIVE; + + ret = CONTAINER_INSERT(container, row_ctx); + if (ret) { + snmp_log(LOG_ERR, "Cannot insert domain '%s' to container", name); + libvirtGuestTable_release_rowreq_ctx(row_ctx); + ret = -1; + goto out; + } + +out: + return ret; +} + /* * Populate libvirtGuestTable into given container. */ @@ -120,11 +196,10 @@ int libvirtSnmpLoadGuests(netsnmp_container *container) { int ret = 0, i, numIds, numActiveDomains; + int numNames, numDefinedDomains; int *idList = NULL; + char **nameList = NULL; virDomainPtr domain = NULL; - virDomainInfo info; - libvirtGuestTable_rowreq_ctx *row_ctx = NULL; - const char *name = NULL; numActiveDomains = virConnectNumOfDomains(conn); if (-1 == numActiveDomains) { @@ -154,8 +229,6 @@ libvirtSnmpLoadGuests(netsnmp_container *container) } for (i = 0 ; i < numIds ; i++) { - unsigned char uuid[16]; - domain = virDomainLookupByID(conn, *(idList + i)); if (NULL == domain) { printf("Failed to lookup domain\n"); @@ -164,74 +237,61 @@ libvirtSnmpLoadGuests(netsnmp_container *container) goto out; } - if (-1 == virDomainGetInfo(domain, &info)) { - printf("Failed to get domain info\n"); - showError(conn); - virDomainFree(domain); - ret = -1; + ret = insertGuest(container, domain); + + virDomainFree(domain); + + if (-1 == ret) goto out; - } + } - /* create new row in the container */ - row_ctx = libvirtGuestTable_allocate_rowreq_ctx(NULL); - if (!row_ctx) { - virDomainFree(domain); - snmp_log(LOG_ERR, "Error creating row"); - ret = -1; - goto out; - } - /* set the index of the row */ - ret = virDomainGetUUID(domain, uuid); - if (ret) { - virDomainFree(domain); - snmp_log(LOG_ERR, "Cannot get UUID"); - libvirtGuestTable_release_rowreq_ctx(row_ctx); - ret = -1; - goto out; - } - if (MFD_SUCCESS != libvirtGuestTable_indexes_set(row_ctx, (char*) uuid, - sizeof(uuid))) { - virDomainFree(domain); - snmp_log(LOG_ERR, "Error setting row index"); - libvirtGuestTable_release_rowreq_ctx(row_ctx); - ret = -1; - goto out; - } + /* Inactive domains */ + numDefinedDomains = virConnectNumOfDefinedDomains(conn); + if (-1 == numDefinedDomains) { + ret = -1; + printf("Failed to get number of defined domains\n"); + showError(conn); + goto out; + } - /* set the data */ - name = virDomainGetName(domain); - if (name) - row_ctx->data.libvirtGuestName = strdup(name); - else - row_ctx->data.libvirtGuestName = strdup(""); - if (!row_ctx->data.libvirtGuestName) { - snmp_log(LOG_ERR, "Not enough memory for domain name '%s'", name); - libvirtGuestTable_release_rowreq_ctx(row_ctx); - ret = -1; - goto out; + nameList = malloc(sizeof(*nameList) * numDefinedDomains); + + if (NULL == nameList) { + ret = -1; + printf("Could not allocate memory for list of defined domains\n"); + goto out_inact; + } + + numNames = virConnectListDefinedDomains(conn, + nameList, + numDefinedDomains); + + if (-1 == numNames) { + ret = -1; + printf("Could not get list of defined domains from hypervisor\n"); + showError(conn); + goto out_inact; + } + + for (i = 0 ; i < numNames ; i++) { + domain = virDomainLookupByName(conn, *(nameList + i)); + if (NULL == domain) { + printf("Failed to lookup domain\n"); + showError(conn); + ret = -1; + goto out_inact; } - row_ctx->data.libvirtGuestState = info.state; - row_ctx->data.libvirtGuestCpuCount = info.nrVirtCpu; - /* convert the memory to MiB */ - row_ctx->data.libvirtGuestMemoryCurrent = info.memory / 1024; - row_ctx->data.libvirtGuestMemoryLimit = info.maxMem / 1024; - row_ctx->data.libvirtGuestCpuTime.high = info.cpuTime >> 32; - row_ctx->data.libvirtGuestCpuTime.low = info.cpuTime & 0xFFFFFFFF; + ret = insertGuest(container, domain); - row_ctx->data.libvirtGuestRowStatus = ROWSTATUS_ACTIVE; virDomainFree(domain); - ret = CONTAINER_INSERT(container, row_ctx); - if (ret) { - snmp_log(LOG_ERR, "Cannot insert domain '%s' to container", name); - libvirtGuestTable_release_rowreq_ctx(row_ctx); - ret = -1; - goto out; - } - + if (-1 == ret) + goto out_inact; } +out_inact: + free(nameList); out: free(idList); return ret; -- 1.7.10.4