diff options
Diffstat (limited to 'src/rgw/services/svc_zone_utils.cc')
-rw-r--r-- | src/rgw/services/svc_zone_utils.cc | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/rgw/services/svc_zone_utils.cc b/src/rgw/services/svc_zone_utils.cc new file mode 100644 index 000000000..712bb97c9 --- /dev/null +++ b/src/rgw/services/svc_zone_utils.cc @@ -0,0 +1,64 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab ft=cpp + +#include "svc_zone_utils.h" +#include "svc_rados.h" +#include "svc_zone.h" + +#include "rgw_zone.h" + +using namespace std; + +int RGWSI_ZoneUtils::do_start(optional_yield, const DoutPrefixProvider *dpp) +{ + init_unique_trans_id_deps(); + + return 0; +} + +string RGWSI_ZoneUtils::gen_host_id() { + /* uint64_t needs 16, two '-' separators and a trailing null */ + const string& zone_name = zone_svc->get_zone().name; + const string& zonegroup_name = zone_svc->get_zonegroup().get_name(); + char charbuf[16 + zone_name.size() + zonegroup_name.size() + 2 + 1]; + snprintf(charbuf, sizeof(charbuf), "%llx-%s-%s", (unsigned long long)rados_svc->instance_id(), zone_name.c_str(), zonegroup_name.c_str()); + return string(charbuf); +} + +string RGWSI_ZoneUtils::unique_id(uint64_t unique_num) +{ + char buf[32]; + snprintf(buf, sizeof(buf), ".%llu.%llu", (unsigned long long)rados_svc->instance_id(), (unsigned long long)unique_num); + string s = zone_svc->get_zone_params().get_id() + buf; + return s; +} + +void RGWSI_ZoneUtils::init_unique_trans_id_deps() { + char buf[16 + 2 + 1]; /* uint64_t needs 16, 2 hyphens add further 2 */ + + snprintf(buf, sizeof(buf), "-%llx-", (unsigned long long)rados_svc->instance_id()); + url_encode(string(buf) + zone_svc->get_zone().name, trans_id_suffix); +} + +/* In order to preserve compatibility with Swift API, transaction ID + * should contain at least 32 characters satisfying following spec: + * - first 21 chars must be in range [0-9a-f]. Swift uses this + * space for storing fragment of UUID obtained through a call to + * uuid4() function of Python's uuid module; + * - char no. 22 must be a hyphen; + * - at least 10 next characters constitute hex-formatted timestamp + * padded with zeroes if necessary. All bytes must be in [0-9a-f] + * range; + * - last, optional part of transaction ID is any url-encoded string + * without restriction on length. */ +string RGWSI_ZoneUtils::unique_trans_id(const uint64_t unique_num) { + char buf[41]; /* 2 + 21 + 1 + 16 (timestamp can consume up to 16) + 1 */ + time_t timestamp = time(NULL); + + snprintf(buf, sizeof(buf), "tx%021llx-%010llx", + (unsigned long long)unique_num, + (unsigned long long)timestamp); + + return string(buf) + trans_id_suffix; +} + |