+++ /dev/null
-/** -*- C++ -*-
- * Copyright (C) 2009-2011 New Dream Network
- *
- * This file is part of Hypertable.
- *
- * Hypertable is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or any later version.
- *
- * Hypertable is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with Hypertable. If not, see <http://www.gnu.org/licenses/>
- *
- * Authors:
- * Gregory Farnum <gfarnum@gmail.com>
- * Colin McCabe <cmccabe@alumni.cmu.edu>
- */
-
-#include "Common/Compat.h"
-
-#include "CephBroker.h"
-#include "Common/Error.h"
-#include "Common/FileUtils.h"
-#include "Common/Filesystem.h"
-#include "Common/System.h"
-
-#include <cephfs/libcephfs.h>
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <string>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <unistd.h>
-
-using namespace Hypertable;
-
-std::atomic<int> CephBroker::ms_next_fd{0};
-
-/* A thread-safe version of strerror */
-static std::string cpp_strerror(int err)
-{
- char buf[128];
- if (err < 0)
- err = -err;
- std::ostringstream oss;
- oss << strerror_r(err, buf, sizeof(buf));
- return oss.str();
-}
-
-OpenFileDataCeph::OpenFileDataCeph(struct ceph_mount_info *cmount_, const String& fname,
- int _fd, int _flags)
- : cmount(cmount_), fd(_fd), flags(_flags), filename(fname)
-{
-}
-
-OpenFileDataCeph::~OpenFileDataCeph() {
- ceph_close(cmount, fd);
-}
-
-CephBroker::CephBroker(PropertiesPtr& cfg)
- : cmount(NULL)
-{
- int ret;
- String id(cfg->get_str("CephBroker.Id"));
- m_verbose = cfg->get_bool("Hypertable.Verbose");
- m_root_dir = cfg->get_str("CephBroker.RootDir");
- String mon_addr(cfg->get_str("CephBroker.MonAddr"));
-
- HT_INFO("Calling ceph_create");
- ret = ceph_create(&cmount, id.empty() ? NULL : id.c_str());
- if (ret) {
- throw Hypertable::Exception(ret, "ceph_create failed");
- }
- ret = ceph_conf_set(cmount, "mon_host", mon_addr.c_str());
- if (ret) {
- ceph_shutdown(cmount);
- throw Hypertable::Exception(ret, "ceph_conf_set(mon_addr) failed");
- }
-
- // For Ceph debugging, uncomment these lines
- //ceph_conf_set(cmount, "debug_client", "1");
- //ceph_conf_set(cmount, "debug_ms", "1");
-
- HT_INFO("Calling ceph_mount");
- ret = ceph_mount(cmount, m_root_dir.empty() ? NULL : m_root_dir.c_str());
- if (ret) {
- ceph_shutdown(cmount);
- throw Hypertable::Exception(ret, "ceph_mount failed");
- }
- HT_INFO("Mounted Ceph filesystem.");
-}
-
-CephBroker::~CephBroker()
-{
- ceph_shutdown(cmount);
- cmount = NULL;
-}
-
-void CephBroker::open(ResponseCallbackOpen *cb, const char *fname,
- uint32_t flags, uint32_t bufsz) {
- int fd, ceph_fd;
- String abspath;
- HT_DEBUGF("open file='%s' bufsz=%d", fname, bufsz);
-
- make_abs_path(fname, abspath);
-
- fd = atomic_inc_return(&ms_next_fd);
-
- if ((ceph_fd = ceph_open(cmount, abspath.c_str(), O_RDONLY, 0)) < 0) {
- report_error(cb, -ceph_fd);
- return;
- }
- HT_INFOF("open (%s) fd=%d ceph_fd=%d", fname, fd, ceph_fd);
-
- {
- struct sockaddr_in addr;
- OpenFileDataCephPtr fdata(new OpenFileDataCeph(cmount, abspath, ceph_fd, O_RDONLY));
-
- cb->get_address(addr);
-
- m_open_file_map.create(fd, addr, fdata);
-
- cb->response(fd);
- }
-}
-
-void CephBroker::create(ResponseCallbackOpen *cb, const char *fname, uint32_t flags,
- int32_t bufsz, int16_t replication, int64_t blksz){
- int fd, ceph_fd;
- int oflags;
- String abspath;
-
- make_abs_path(fname, abspath);
- HT_DEBUGF("create file='%s' flags=%u bufsz=%d replication=%d blksz=%lld",
- fname, flags, bufsz, (int)replication, (Lld)blksz);
-
- fd = atomic_inc_return(&ms_next_fd);
-
- if (flags & Filesystem::OPEN_FLAG_OVERWRITE)
- oflags = O_WRONLY | O_CREAT | O_TRUNC;
- else
- oflags = O_WRONLY | O_CREAT | O_APPEND;
-
- //make sure the directories in the path exist
- String directory = abspath.substr(0, abspath.rfind('/'));
- int r;
- HT_INFOF("Calling mkdirs on %s", directory.c_str());
- if((r=ceph_mkdirs(cmount, directory.c_str(), 0644)) < 0 && r!=-EEXIST) {
- HT_ERRORF("create failed on mkdirs: dname='%s' - %d", directory.c_str(), -r);
- report_error(cb, -r);
- return;
- }
-
- //create file
- if ((ceph_fd = ceph_open(cmount, abspath.c_str(), oflags, 0644)) < 0) {
- std::string errs(cpp_strerror(-ceph_fd));
- HT_ERRORF("open failed: file=%s - %s", abspath.c_str(), errs.c_str());
- report_error(cb, ceph_fd);
- return;
- }
-
- HT_INFOF("create %s = %d", fname, ceph_fd);
-
- {
- struct sockaddr_in addr;
- OpenFileDataCephPtr fdata (new OpenFileDataCeph(cmount, fname, ceph_fd, O_WRONLY));
-
- cb->get_address(addr);
-
- m_open_file_map.create(fd, addr, fdata);
-
- cb->response(fd);
- }
-}
-
-void CephBroker::close(ResponseCallback *cb, uint32_t fd) {
- if (m_verbose) {
- HT_INFOF("close fd=%d", fd);
- }
- OpenFileDataCephPtr fdata;
- m_open_file_map.get(fd, fdata);
- m_open_file_map.remove(fd);
- cb->response_ok();
-}
-
-void CephBroker::read(ResponseCallbackRead *cb, uint32_t fd, uint32_t amount) {
- OpenFileDataCephPtr fdata;
- ssize_t nread;
- uint64_t offset;
- StaticBuffer buf(new uint8_t [amount], amount);
-
- HT_DEBUGF("read fd=%d amount = %d", fd, amount);
-
- if (!m_open_file_map.get(fd, fdata)) {
- char errbuf[32];
- sprintf(errbuf, "%d", fd);
- cb->error(Error::DFSBROKER_BAD_FILE_HANDLE, errbuf);
- HT_ERRORF("bad file handle: %d", fd);
- return;
- }
-
- if ((offset = ceph_lseek(cmount, fdata->fd, 0, SEEK_CUR)) < 0) {
- std::string errs(cpp_strerror((int)-offset));
- HT_ERRORF("lseek failed: fd=%d ceph_fd=%d offset=0 SEEK_CUR - %s",
- fd, fdata->fd, errs.c_str());
- report_error(cb, offset);
- return;
- }
-
- if ((nread = ceph_read(cmount, fdata->fd, (char *)buf.base, amount, 0)) < 0 ) {
- HT_ERRORF("read failed: fd=%d ceph_fd=%d amount=%d", fd, fdata->fd, amount);
- report_error(cb, -nread);
- return;
- }
-
- buf.size = nread;
- cb->response(offset, buf);
-}
-
-void CephBroker::append(ResponseCallbackAppend *cb, uint32_t fd,
- uint32_t amount, const void *data, bool sync)
-{
- OpenFileDataCephPtr fdata;
- ssize_t nwritten;
- uint64_t offset;
-
- HT_DEBUG_OUT << "append fd="<< fd <<" amount="<< amount <<" data='"
- << format_bytes(20, data, amount) <<" sync="<< sync << HT_END;
-
- if (!m_open_file_map.get(fd, fdata)) {
- char errbuf[32];
- sprintf(errbuf, "%d", fd);
- cb->error(Error::DFSBROKER_BAD_FILE_HANDLE, errbuf);
- return;
- }
-
- if ((offset = (uint64_t)ceph_lseek(cmount, fdata->fd, 0, SEEK_CUR)) < 0) {
- std::string errs(cpp_strerror((int)-offset));
- HT_ERRORF("lseek failed: fd=%d ceph_fd=%d offset=0 SEEK_CUR - %s", fd, fdata->fd,
- errs.c_str());
- report_error(cb, offset);
- return;
- }
-
- if ((nwritten = ceph_write(cmount, fdata->fd, (const char *)data, amount, 0)) < 0) {
- std::string errs(cpp_strerror(nwritten));
- HT_ERRORF("write failed: fd=%d ceph_fd=%d amount=%d - %s",
- fd, fdata->fd, amount, errs.c_str());
- report_error(cb, -nwritten);
- return;
- }
-
- int r;
- if (sync && ((r = ceph_fsync(cmount, fdata->fd, true)) != 0)) {
- std::string errs(cpp_strerror(errno));
- HT_ERRORF("flush failed: fd=%d ceph_fd=%d - %s", fd, fdata->fd, errs.c_str());
- report_error(cb, r);
- return;
- }
-
- cb->response(offset, nwritten);
-}
-
-void CephBroker::seek(ResponseCallback *cb, uint32_t fd, uint64_t offset) {
- OpenFileDataCephPtr fdata;
-
- HT_DEBUGF("seek fd=%lu offset=%llu", (Lu)fd, (Llu)offset);
-
- if (!m_open_file_map.get(fd, fdata)) {
- char errbuf[32];
- sprintf(errbuf, "%d", fd);
- cb->error(Error::DFSBROKER_BAD_FILE_HANDLE, errbuf);
- return;
- }
- loff_t res = ceph_lseek(cmount, fdata->fd, offset, SEEK_SET);
- if (res < 0) {
- std::string errs(cpp_strerror((int)res));
- HT_ERRORF("lseek failed: fd=%d ceph_fd=%d offset=%llu - %s",
- fd, fdata->fd, (Llu)offset, errs.c_str());
- report_error(cb, offset);
- return;
- }
-
- cb->response_ok();
-}
-
-void CephBroker::remove(ResponseCallback *cb, const char *fname) {
- String abspath;
-
- HT_DEBUGF("remove file='%s'", fname);
-
- make_abs_path(fname, abspath);
-
- int r;
- if ((r = ceph_unlink(cmount, abspath.c_str())) < 0) {
- std::string errs(cpp_strerror(r));
- HT_ERRORF("unlink failed: file='%s' - %s", abspath.c_str(), errs.c_str());
- report_error(cb, r);
- return;
- }
- cb->response_ok();
-}
-
-void CephBroker::length(ResponseCallbackLength *cb, const char *fname, bool) {
- int r;
- struct ceph_statx stx;
-
- HT_DEBUGF("length file='%s'", fname);
-
- if ((r = ceph_statx(cmount, fname, &stx, CEPH_STATX_SIZE, AT_SYMLINK_NOFOLLOW)) < 0) {
- String abspath;
- make_abs_path(fname, abspath);
- std::string errs(cpp_strerror(r));
- HT_ERRORF("length (stat) failed: file='%s' - %s", abspath.c_str(), errs.c_str());
- report_error(cb,- r);
- return;
- }
- cb->response(stx.stx_size);
-}
-
-void CephBroker::pread(ResponseCallbackRead *cb, uint32_t fd, uint64_t offset,
- uint32_t amount, bool) {
- OpenFileDataCephPtr fdata;
- ssize_t nread;
- StaticBuffer buf(new uint8_t [amount], amount);
-
- HT_DEBUGF("pread fd=%d offset=%llu amount=%d", fd, (Llu)offset, amount);
-
- if (!m_open_file_map.get(fd, fdata)) {
- char errbuf[32];
- sprintf(errbuf, "%d", fd);
- cb->error(Error::DFSBROKER_BAD_FILE_HANDLE, errbuf);
- return;
- }
-
- if ((nread = ceph_read(cmount, fdata->fd, (char *)buf.base, amount, offset)) < 0) {
- std::string errs(cpp_strerror(nread));
- HT_ERRORF("pread failed: fd=%d ceph_fd=%d amount=%d offset=%llu - %s", fd, fdata->fd,
- amount, (Llu)offset, errs.c_str());
- report_error(cb, nread);
- return;
- }
-
- buf.size = nread;
-
- cb->response(offset, buf);
-}
-
-void CephBroker::mkdirs(ResponseCallback *cb, const char *dname) {
- String absdir;
-
- HT_DEBUGF("mkdirs dir='%s'", dname);
-
- make_abs_path(dname, absdir);
- int r;
- if((r=ceph_mkdirs(cmount, absdir.c_str(), 0644)) < 0 && r!=-EEXIST) {
- HT_ERRORF("mkdirs failed: dname='%s' - %d", absdir.c_str(), -r);
- report_error(cb, -r);
- return;
- }
- cb->response_ok();
-}
-
-void CephBroker::rmdir(ResponseCallback *cb, const char *dname) {
- String absdir;
- int r;
-
- make_abs_path(dname, absdir);
- if((r = rmdir_recursive(absdir.c_str())) < 0) {
- HT_ERRORF("failed to remove dir %s, got error %d", absdir.c_str(), r);
- report_error(cb, -r);
- return;
- }
- cb->response_ok();
-}
-
-int CephBroker::rmdir_recursive(const char *directory) {
- struct ceph_dir_result *dirp;
- struct dirent de;
- struct ceph_statx stx;
- int r;
- if ((r = ceph_opendir(cmount, directory, &dirp)) < 0)
- return r; //failed to open
- while ((r = ceph_readdirplus_r(cmount, dirp, &de, &stx, CEPH_STATX_INO, AT_NO_ATTR_SYNC, NULL)) > 0) {
- String new_dir = de.d_name;
- if(!(new_dir.compare(".")==0 || new_dir.compare("..")==0)) {
- new_dir = directory;
- new_dir += '/';
- new_dir += de.d_name;
- if (S_ISDIR(stx.stx_mode)) { //it's a dir, clear it out...
- if((r=rmdir_recursive(new_dir.c_str())) < 0) return r;
- } else { //delete this file
- if((r=ceph_unlink(cmount, new_dir.c_str())) < 0) return r;
- }
- }
- }
- if (r < 0) return r; //we got an error
- if ((r = ceph_closedir(cmount, dirp)) < 0) return r;
- return ceph_rmdir(cmount, directory);
-}
-
-void CephBroker::flush(ResponseCallback *cb, uint32_t fd) {
- OpenFileDataCephPtr fdata;
-
- HT_DEBUGF("flush fd=%d", fd);
-
- if (!m_open_file_map.get(fd, fdata)) {
- char errbuf[32];
- sprintf(errbuf, "%d", fd);
- cb->error(Error::DFSBROKER_BAD_FILE_HANDLE, errbuf);
- return;
- }
-
- int r;
- if ((r = ceph_fsync(cmount, fdata->fd, true)) != 0) {
- std::string errs(cpp_strerror(r));
- HT_ERRORF("flush failed: fd=%d ceph_fd=%d - %s", fd, fdata->fd, errs.c_str());
- report_error(cb, -r);
- return;
- }
-
- cb->response_ok();
-}
-
-void CephBroker::status(ResponseCallback *cb) {
- cb->response_ok();
- /*perhaps a total cheat, but both the local and Kosmos brokers
- included in Hypertable also do this. */
-}
-
-void CephBroker::shutdown(ResponseCallback *cb) {
- m_open_file_map.remove_all();
- cb->response_ok();
- poll(0, 0, 2000);
-}
-
-void CephBroker::readdir(ResponseCallbackReaddir *cb, const char *dname) {
- std::vector<String> listing;
- String absdir;
-
- HT_DEBUGF("Readdir dir='%s'", dname);
-
- //get from ceph in a buffer
- make_abs_path(dname, absdir);
-
- struct ceph_dir_result *dirp;
- ceph_opendir(cmount, absdir.c_str(), &dirp);
- int r;
- int buflen = 100; //good default?
- char *buf = new char[buflen];
- String *ent;
- int bufpos;
- while (1) {
- r = ceph_getdnames(cmount, dirp, buf, buflen);
- if (r==-ERANGE) { //expand the buffer
- delete [] buf;
- buflen *= 2;
- buf = new char[buflen];
- continue;
- }
- if (r<=0) break;
-
- //if we make it here, we got at least one name, maybe more
- bufpos = 0;
- while (bufpos<r) {//make new strings and add them to listing
- ent = new String(buf+bufpos);
- if (ent->compare(".") && ent->compare(".."))
- listing.push_back(*ent);
- bufpos+=ent->size()+1;
- delete ent;
- }
- }
- delete [] buf;
- ceph_closedir(cmount, dirp);
-
- if (r < 0) report_error(cb, -r); //Ceph shouldn't return r<0 on getdnames
- //(except for ERANGE) so if it happens this is bad
- cb->response(listing);
-}
-
-void CephBroker::exists(ResponseCallbackExists *cb, const char *fname) {
- String abspath;
- struct ceph_statx stx;
-
- HT_DEBUGF("exists file='%s'", fname);
- make_abs_path(fname, abspath);
- cb->response(ceph_statx(cmount, abspath.c_str(), &stx, 0, AT_SYMLINK_NOFOLLOW) == 0);
-}
-
-void CephBroker::rename(ResponseCallback *cb, const char *src, const char *dst) {
- String src_abs;
- String dest_abs;
- int r;
-
- make_abs_path(src, src_abs);
- make_abs_path(dst, dest_abs);
- if ((r = ceph_rename(cmount, src_abs.c_str(), dest_abs.c_str())) <0 ) {
- report_error(cb, r);
- return;
- }
- cb->response_ok();
-}
-
-void CephBroker::debug(ResponseCallback *cb, int32_t command,
- StaticBuffer &serialized_parameters) {
- HT_ERROR("debug commands not implemented!");
- cb->error(Error::NOT_IMPLEMENTED, format("Debug commands not supported"));
-}
-
-void CephBroker::report_error(ResponseCallback *cb, int error) {
- char errbuf[128];
- errbuf[0] = 0;
-
- strerror_r(error, errbuf, 128);
-
- cb->error(Error::DFSBROKER_IO_ERROR, errbuf);
-}
-
-
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