From 577872453c3071b3801501600e807eb4b9478d1e Mon Sep 17 00:00:00 2001 From: Michael Vrable Date: Sun, 22 Apr 2007 21:41:25 -0700 Subject: [PATCH] Remove code using old segment writer. All writes should now happen to TAR-format segments, and data should be serialized as text. --- format.cc | 22 ++++++++++++++++ format.h | 4 +++ scandir.cc | 76 ++++++++++++------------------------------------------ 3 files changed, 42 insertions(+), 60 deletions(-) diff --git a/format.cc b/format.cc index e6e11bc..08c2f74 100644 --- a/format.cc +++ b/format.cc @@ -8,9 +8,13 @@ #include #include +#include +#include #include #include +using std::map; +using std::ostream; using std::string; /* Perform URI-style escaping of a string. Bytes which cannot be represented @@ -34,3 +38,21 @@ string uri_encode(const string &in) return out; } + +/* Return the string representation of an integer. */ +string encode_int(long long n) +{ + char buf[64]; + sprintf(buf, "%lld", n); + return buf; +} + +/* Output a dictionary of string key/value pairs to the given output stream. + * The format is a sequence of lines of the form "key: value". */ +void dict_output(ostream &o, map dict) +{ + for (map::const_iterator i = dict.begin(); + i != dict.end(); ++i) { + o << i->first << ": " << i->second << "\n"; + } +} diff --git a/format.h b/format.h index 6e6784b..9f6055a 100644 --- a/format.h +++ b/format.h @@ -8,8 +8,12 @@ #ifndef _LBS_FORMAT_H #define _LBS_FORMAT_H +#include +#include #include std::string uri_encode(const std::string &in); +std::string encode_int(long long n); +void dict_output(std::ostream &o, std::map dict); #endif // _LBS_TARSTORE_H diff --git a/scandir.cc b/scandir.cc index c1bedeb..c6879d2 100644 --- a/scandir.cc +++ b/scandir.cc @@ -25,13 +25,8 @@ using std::string; using std::vector; using std::ostream; -static SegmentStore *segment_store; -static OutputStream *info_dump = NULL; - static TarSegmentStore *tss = NULL; -static SegmentPartitioner *index_segment, *data_segment; - /* Buffer for holding a single block of data read from a file. */ static const int LBS_BLOCK_SIZE = 1024 * 1024; static char *block_buf; @@ -76,7 +71,7 @@ void dumpfile(int fd, dictionary &file_info, ostream &metadata) struct stat stat_buf; fstat(fd, &stat_buf); int64_t size = 0; - string segment_list = "data:"; + string segment_list = ""; if ((stat_buf.st_mode & S_IFMT) != S_IFREG) { printf("file is no longer a regular file!\n"); @@ -87,41 +82,25 @@ void dumpfile(int fd, dictionary &file_info, ostream &metadata) * that actually comprise the file data. This level of indirection is used * so that the same data block can be used in multiple files, or multiple * versions of the same file. */ - struct uuid segment_uuid; - int object_id; - OutputStream *index_data = index_segment->new_object(&segment_uuid, - &object_id, - "DREF"); - SHA1Checksum hash; while (true) { - struct uuid block_segment_uuid; - int block_object_id; - size_t bytes = file_read(fd, block_buf, LBS_BLOCK_SIZE); if (bytes == 0) break; hash.process(block_buf, bytes); - OutputStream *block = data_segment->new_object(&block_segment_uuid, - &block_object_id, - "DATA"); - block->write(block_buf, bytes); - index_data->write_uuid(block_segment_uuid); - index_data->write_u32(block_object_id); // tarstore processing string blockid = tss->write_object(block_buf, bytes, "data"); - segment_list += " " + blockid; + if (segment_list.size() > 0) + segment_list += " "; + segment_list += blockid; size += bytes; } - file_info["sha1"] = string((const char *)hash.checksum(), - hash.checksum_size()); - file_info["data"] = encode_objref(segment_uuid, object_id); - - metadata << segment_list << "\n"; + file_info["checksum"] = hash.checksum_str(); + file_info["data"] = segment_list; } void scanfile(const string& path, ostream &metadata) @@ -142,19 +121,13 @@ void scanfile(const string& path, ostream &metadata) printf("%s\n", path.c_str()); metadata << "name: " << uri_encode(path) << "\n"; - metadata << "mode: " << (stat_buf.st_mode & 07777) << "\n"; - metadata << "atime: " << stat_buf.st_atime << "\n"; - metadata << "ctime: " << stat_buf.st_ctime << "\n"; - metadata << "mtime: " << stat_buf.st_mtime << "\n"; - metadata << "user: " << stat_buf.st_uid << "\n"; - metadata << "group: " << stat_buf.st_gid << "\n"; - - file_info["mode"] = encode_u16(stat_buf.st_mode & 07777); - file_info["atime"] = encode_u64(encode_time(stat_buf.st_atime)); - file_info["ctime"] = encode_u64(encode_time(stat_buf.st_ctime)); - file_info["mtime"] = encode_u64(encode_time(stat_buf.st_mtime)); - file_info["user"] = encode_u32(stat_buf.st_uid); - file_info["group"] = encode_u32(stat_buf.st_gid); + + file_info["mode"] = encode_int(stat_buf.st_mode & 07777); + file_info["atime"] = encode_int(stat_buf.st_atime); + file_info["ctime"] = encode_int(stat_buf.st_ctime); + file_info["mtime"] = encode_int(stat_buf.st_mtime); + file_info["user"] = encode_int(stat_buf.st_uid); + file_info["group"] = encode_int(stat_buf.st_gid); char inode_type; @@ -188,7 +161,7 @@ void scanfile(const string& path, ostream &metadata) printf("error reading symlink: name truncated\n"); } - file_info["contents"] = buf; + file_info["contents"] = uri_encode(buf); delete[] buf; break; @@ -213,7 +186,7 @@ void scanfile(const string& path, ostream &metadata) flags = fcntl(fd, F_GETFL); fcntl(fd, F_SETFL, flags & ~O_NONBLOCK); - file_info["size"] = encode_u64(stat_buf.st_size); + file_info["size"] = encode_int(stat_buf.st_size); dumpfile(fd, file_info, metadata); close(fd); @@ -231,9 +204,7 @@ void scanfile(const string& path, ostream &metadata) file_info["type"] = string(1, inode_type); metadata << "type: " << inode_type << "\n"; - info_dump->write_string(path); - info_dump->write_dictionary(file_info); - + dict_output(metadata, file_info); metadata << "\n"; // If we hit a directory, now that we've written the directory itself, @@ -276,15 +247,6 @@ int main(int argc, char *argv[]) block_buf = new char[LBS_BLOCK_SIZE]; tss = new TarSegmentStore("."); - segment_store = new SegmentStore("."); - SegmentWriter *sw = segment_store->new_segment(); - info_dump = sw->new_object(NULL, "ROOT"); - - index_segment = new SegmentPartitioner(segment_store); - data_segment = new SegmentPartitioner(segment_store); - - string uuid = SegmentWriter::format_uuid(sw->get_uuid()); - printf("Backup UUID: %s\n", uuid.c_str()); std::ostringstream metadata; @@ -297,14 +259,8 @@ int main(int argc, char *argv[]) const string md = metadata.str(); string root = tss->write_object(md.data(), md.size(), "root"); - fprintf(stderr, "Metadata root is at %s\n", root.c_str()); - tss->sync(); delete tss; - delete index_segment; - delete data_segment; - delete sw; - return 0; } -- 2.20.1