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From: "Han-Wen Nienhuys via GitGitGadget" <gitgitgadget@gmail.com>
Date: Fri, 12 Mar 2021 20:19:41 +0000
Subject: [PATCH v5 00/15] reftable library
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Cc: Han-Wen Nienhuys <hanwen@google.com>, Jeff King <peff@peff.net>,
Ramsay Jones <ramsay@ramsayjones.plus.com>,
Jonathan Nieder <jrnieder@gmail.com>,
Johannes Schindelin <Johannes.Schindelin@gmx.de>,
Jonathan Tan <jonathantanmy@google.com>, Josh Steadmon <steadmon@google.com>,
Emily Shaffer <emilyshaffer@google.com>, Patrick Steinhardt <ps@pks.im>,
=?utf-8?b?w4Z2YXIgQXJuZmrDtnLDsA==?= Bjarmason <avarab@gmail.com>,
Felipe Contreras <felipe.contreras@gmail.com>,
Han-Wen Nienhuys <hanwenn@gmail.com>
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| Series |
reftable library
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expand
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This splits the giant commit from https://github.com/gitgitgadget/git/pull/539 into a series of smaller commits, which build and have unittests. The final commit should also be split up, but I want to wait until we have consensus that the bottom commits look good. version 12 Mar 2021: * tagged unions for reftable_log_record * some fixups by jun Based on github.com/hanwen/reftable at c33a40ad23dd622d8c72139c41a2be1cfa063e5f Add random suffix to table names Han-Wen Nienhuys (14): init-db: set the_repository->hash_algo early on reftable: add LICENSE reftable: add error related functionality reftable: utility functions reftable: add blocksource, an abstraction for random access reads reftable: (de)serialization for the polymorphic record type. reftable: reading/writing blocks reftable: a generic binary tree implementation reftable: write reftable files reftable: read reftable files reftable: reftable file level tests reftable: rest of library Reftable support for git-core Add "test-tool dump-reftable" command. SZEDER Gábor (1): git-prompt: prepare for reftable refs backend Documentation/config/extensions.txt | 9 + .../technical/repository-version.txt | 7 + Makefile | 46 +- builtin/clone.c | 5 +- builtin/init-db.c | 76 +- builtin/worktree.c | 27 +- cache.h | 8 +- config.mak.uname | 2 +- contrib/buildsystems/CMakeLists.txt | 14 +- contrib/buildsystems/Generators/Vcxproj.pm | 11 +- contrib/completion/git-prompt.sh | 7 +- refs.c | 27 +- refs.h | 3 + refs/refs-internal.h | 1 + refs/reftable-backend.c | 1446 +++++++++++++++++ reftable/.gitattributes | 1 + reftable/LICENSE | 31 + reftable/VERSION | 1 + reftable/basics.c | 128 ++ reftable/basics.h | 60 + reftable/basics_test.c | 98 ++ reftable/block.c | 440 +++++ reftable/block.h | 127 ++ reftable/block_test.c | 121 ++ reftable/blocksource.c | 148 ++ reftable/blocksource.h | 22 + reftable/constants.h | 21 + reftable/dump.c | 213 +++ reftable/error.c | 41 + reftable/iter.c | 248 +++ reftable/iter.h | 75 + reftable/merged.c | 366 +++++ reftable/merged.h | 35 + reftable/merged_test.c | 343 ++++ reftable/pq.c | 115 ++ reftable/pq.h | 32 + reftable/publicbasics.c | 58 + reftable/reader.c | 733 +++++++++ reftable/reader.h | 75 + reftable/record.c | 1203 ++++++++++++++ reftable/record.h | 139 ++ reftable/record_test.c | 405 +++++ reftable/refname.c | 209 +++ reftable/refname.h | 29 + reftable/refname_test.c | 102 ++ reftable/reftable-blocksource.h | 49 + reftable/reftable-error.h | 62 + reftable/reftable-generic.h | 48 + reftable/reftable-iterator.h | 37 + reftable/reftable-malloc.h | 18 + reftable/reftable-merged.h | 68 + reftable/reftable-reader.h | 89 + reftable/reftable-record.h | 114 ++ reftable/reftable-stack.h | 120 ++ reftable/reftable-tests.h | 22 + reftable/reftable-writer.h | 147 ++ reftable/reftable.c | 98 ++ reftable/reftable_test.c | 583 +++++++ reftable/stack.c | 1260 ++++++++++++++ reftable/stack.h | 41 + reftable/stack_test.c | 809 +++++++++ reftable/system.h | 32 + reftable/test_framework.c | 23 + reftable/test_framework.h | 53 + reftable/tree.c | 63 + reftable/tree.h | 34 + reftable/tree_test.c | 61 + reftable/writer.c | 691 ++++++++ reftable/writer.h | 50 + reftable/zlib-compat.c | 92 ++ repository.c | 2 + repository.h | 3 + setup.c | 9 +- t/helper/test-reftable.c | 20 + t/helper/test-tool.c | 4 +- t/helper/test-tool.h | 2 + t/t0031-reftable.sh | 203 +++ t/t0032-reftable-unittest.sh | 15 + t/t1409-avoid-packing-refs.sh | 6 + t/t1450-fsck.sh | 6 + t/t3210-pack-refs.sh | 6 + t/test-lib.sh | 5 + 82 files changed, 12213 insertions(+), 40 deletions(-) create mode 100644 refs/reftable-backend.c create mode 100644 reftable/.gitattributes create mode 100644 reftable/LICENSE create mode 100644 reftable/VERSION create mode 100644 reftable/basics.c create mode 100644 reftable/basics.h create mode 100644 reftable/basics_test.c create mode 100644 reftable/block.c create mode 100644 reftable/block.h create mode 100644 reftable/block_test.c create mode 100644 reftable/blocksource.c create mode 100644 reftable/blocksource.h create mode 100644 reftable/constants.h create mode 100644 reftable/dump.c create mode 100644 reftable/error.c create mode 100644 reftable/iter.c create mode 100644 reftable/iter.h create mode 100644 reftable/merged.c create mode 100644 reftable/merged.h create mode 100644 reftable/merged_test.c create mode 100644 reftable/pq.c create mode 100644 reftable/pq.h create mode 100644 reftable/publicbasics.c create mode 100644 reftable/reader.c create mode 100644 reftable/reader.h create mode 100644 reftable/record.c create mode 100644 reftable/record.h create mode 100644 reftable/record_test.c create mode 100644 reftable/refname.c create mode 100644 reftable/refname.h create mode 100644 reftable/refname_test.c create mode 100644 reftable/reftable-blocksource.h create mode 100644 reftable/reftable-error.h create mode 100644 reftable/reftable-generic.h create mode 100644 reftable/reftable-iterator.h create mode 100644 reftable/reftable-malloc.h create mode 100644 reftable/reftable-merged.h create mode 100644 reftable/reftable-reader.h create mode 100644 reftable/reftable-record.h create mode 100644 reftable/reftable-stack.h create mode 100644 reftable/reftable-tests.h create mode 100644 reftable/reftable-writer.h create mode 100644 reftable/reftable.c create mode 100644 reftable/reftable_test.c create mode 100644 reftable/stack.c create mode 100644 reftable/stack.h create mode 100644 reftable/stack_test.c create mode 100644 reftable/system.h create mode 100644 reftable/test_framework.c create mode 100644 reftable/test_framework.h create mode 100644 reftable/tree.c create mode 100644 reftable/tree.h create mode 100644 reftable/tree_test.c create mode 100644 reftable/writer.c create mode 100644 reftable/writer.h create mode 100644 reftable/zlib-compat.c create mode 100644 t/helper/test-reftable.c create mode 100755 t/t0031-reftable.sh create mode 100755 t/t0032-reftable-unittest.sh base-commit: 13d7ab6b5d7929825b626f050b62a11241ea4945 Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-git-847%2Fhanwen%2Flibreftable-v5 Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-git-847/hanwen/libreftable-v5 Pull-Request: https://github.com/git/git/pull/847 Range-diff vs v4: 1: 40ac041d0efe ! 1: e1d1d9f49807 init-db: set the_repository->hash_algo early on @@ builtin/init-db.c: int init_db(const char *git_dir, const char *real_git_dir, + repo_set_hash_algo(the_repository, repo_fmt.hash_algo); + reinit = create_default_files(template_dir, original_git_dir, - initial_branch, &repo_fmt); - if (reinit && initial_branch) + initial_branch, &repo_fmt, + flags & INIT_DB_QUIET); 2: cc0fe58bd333 = 2: 502a66befabe reftable: add LICENSE 3: 798f680b800b = 3: 1bd136f6a6df reftable: add error related functionality 4: 2f55ff6d2406 ! 4: 5bbbafb428e9 reftable: utility functions @@ t/helper/test-reftable.c (new) ## t/helper/test-tool.c ## @@ t/helper/test-tool.c: static struct test_cmd cmds[] = { - { "path-utils", cmd__path_utils }, + { "pcre2-config", cmd__pcre2_config }, { "pkt-line", cmd__pkt_line }, { "prio-queue", cmd__prio_queue }, - { "proc-receive", cmd__proc_receive}, 5: aaa817f8598b = 5: e41fa780882d reftable: add blocksource, an abstraction for random access reads 6: e13afe315258 ! 6: 390eaca4fc8c reftable: (de)serialization for the polymorphic record type. @@ reftable/record.c (new) +{ + char hex[SHA256_SIZE + 1] = { 0 }; + -+ printf("log{%s(%" PRIu64 ") %s <%s> %" PRIu64 " %04d\n", log->refname, -+ log->update_index, log->name, log->email, log->time, -+ log->tz_offset); -+ hex_format(hex, log->old_hash, hash_size(hash_id)); -+ printf("%s => ", hex); -+ hex_format(hex, log->new_hash, hash_size(hash_id)); -+ printf("%s\n\n%s\n}\n", hex, log->message); ++ switch (log->value_type) { ++ case REFTABLE_LOG_DELETION: ++ printf("log{%s(%" PRIu64 ") delete", log->refname, ++ log->update_index); ++ break; ++ case REFTABLE_LOG_UPDATE: ++ printf("log{%s(%" PRIu64 ") %s <%s> %" PRIu64 " %04d\n", ++ log->refname, log->update_index, log->update.name, ++ log->update.email, log->update.time, ++ log->update.tz_offset); ++ hex_format(hex, log->update.old_hash, hash_size(hash_id)); ++ printf("%s => ", hex); ++ hex_format(hex, log->update.new_hash, hash_size(hash_id)); ++ printf("%s\n\n%s\n}\n", hex, log->update.message); ++ break; ++ } +} + +static void reftable_log_record_key(const void *r, struct strbuf *dest) @@ reftable/record.c (new) + if (dst->refname != NULL) { + dst->refname = xstrdup(dst->refname); + } -+ if (dst->email != NULL) { -+ dst->email = xstrdup(dst->email); -+ } -+ if (dst->name != NULL) { -+ dst->name = xstrdup(dst->name); -+ } -+ if (dst->message != NULL) { -+ dst->message = xstrdup(dst->message); -+ } ++ switch (dst->value_type) { ++ case REFTABLE_LOG_DELETION: ++ break; ++ case REFTABLE_LOG_UPDATE: ++ if (dst->update.email != NULL) { ++ dst->update.email = xstrdup(dst->update.email); ++ } ++ if (dst->update.name != NULL) { ++ dst->update.name = xstrdup(dst->update.name); ++ } ++ if (dst->update.message != NULL) { ++ dst->update.message = xstrdup(dst->update.message); ++ } + -+ if (dst->new_hash != NULL) { -+ dst->new_hash = reftable_malloc(hash_size); -+ memcpy(dst->new_hash, src->new_hash, hash_size); -+ } -+ if (dst->old_hash != NULL) { -+ dst->old_hash = reftable_malloc(hash_size); -+ memcpy(dst->old_hash, src->old_hash, hash_size); ++ if (dst->update.new_hash != NULL) { ++ dst->update.new_hash = reftable_malloc(hash_size); ++ memcpy(dst->update.new_hash, src->update.new_hash, ++ hash_size); ++ } ++ if (dst->update.old_hash != NULL) { ++ dst->update.old_hash = reftable_malloc(hash_size); ++ memcpy(dst->update.old_hash, src->update.old_hash, ++ hash_size); ++ } ++ break; + } +} + @@ reftable/record.c (new) +void reftable_log_record_release(struct reftable_log_record *r) +{ + reftable_free(r->refname); -+ reftable_free(r->new_hash); -+ reftable_free(r->old_hash); -+ reftable_free(r->name); -+ reftable_free(r->email); -+ reftable_free(r->message); ++ switch (r->value_type) { ++ case REFTABLE_LOG_DELETION: ++ break; ++ case REFTABLE_LOG_UPDATE: ++ reftable_free(r->update.new_hash); ++ reftable_free(r->update.old_hash); ++ reftable_free(r->update.name); ++ reftable_free(r->update.email); ++ reftable_free(r->update.message); ++ break; ++ } + memset(r, 0, sizeof(struct reftable_log_record)); +} + @@ reftable/record.c (new) + struct reftable_log_record *r = (struct reftable_log_record *)rec; + struct string_view start = s; + int n = 0; -+ uint8_t *oldh = r->old_hash; -+ uint8_t *newh = r->new_hash; ++ uint8_t *oldh = NULL; ++ uint8_t *newh = NULL; + if (reftable_log_record_is_deletion(r)) + return 0; + ++ oldh = r->update.old_hash; ++ newh = r->update.new_hash; + if (oldh == NULL) { + oldh = zero; + } @@ reftable/record.c (new) + memcpy(s.buf + hash_size, newh, hash_size); + string_view_consume(&s, 2 * hash_size); + -+ n = encode_string(r->name ? r->name : "", s); ++ n = encode_string(r->update.name ? r->update.name : "", s); + if (n < 0) + return -1; + string_view_consume(&s, n); + -+ n = encode_string(r->email ? r->email : "", s); ++ n = encode_string(r->update.email ? r->update.email : "", s); + if (n < 0) + return -1; + string_view_consume(&s, n); + -+ n = put_var_int(&s, r->time); ++ n = put_var_int(&s, r->update.time); + if (n < 0) + return -1; + string_view_consume(&s, n); @@ reftable/record.c (new) + if (s.len < 2) + return -1; + -+ put_be16(s.buf, r->tz_offset); ++ put_be16(s.buf, r->update.tz_offset); + string_view_consume(&s, 2); + -+ n = encode_string(r->message ? r->message : "", s); ++ n = encode_string(r->update.message ? r->update.message : "", s); + if (n < 0) + return -1; + string_view_consume(&s, n); @@ reftable/record.c (new) + + r->update_index = (~max) - ts; + -+ if (val_type == 0) { -+ FREE_AND_NULL(r->old_hash); -+ FREE_AND_NULL(r->new_hash); -+ FREE_AND_NULL(r->message); -+ FREE_AND_NULL(r->email); -+ FREE_AND_NULL(r->name); -+ return 0; ++ if (val_type != r->value_type) { ++ switch (r->value_type) { ++ case REFTABLE_LOG_UPDATE: ++ FREE_AND_NULL(r->update.old_hash); ++ FREE_AND_NULL(r->update.new_hash); ++ FREE_AND_NULL(r->update.message); ++ FREE_AND_NULL(r->update.email); ++ FREE_AND_NULL(r->update.name); ++ break; ++ case REFTABLE_LOG_DELETION: ++ break; ++ } + } + ++ r->value_type = val_type; ++ if (val_type == REFTABLE_LOG_DELETION) ++ return 0; ++ + if (in.len < 2 * hash_size) + return REFTABLE_FORMAT_ERROR; + -+ r->old_hash = reftable_realloc(r->old_hash, hash_size); -+ r->new_hash = reftable_realloc(r->new_hash, hash_size); ++ r->update.old_hash = reftable_realloc(r->update.old_hash, hash_size); ++ r->update.new_hash = reftable_realloc(r->update.new_hash, hash_size); + -+ memcpy(r->old_hash, in.buf, hash_size); -+ memcpy(r->new_hash, in.buf + hash_size, hash_size); ++ memcpy(r->update.old_hash, in.buf, hash_size); ++ memcpy(r->update.new_hash, in.buf + hash_size, hash_size); + + string_view_consume(&in, 2 * hash_size); + @@ reftable/record.c (new) + goto done; + string_view_consume(&in, n); + -+ r->name = reftable_realloc(r->name, dest.len + 1); -+ memcpy(r->name, dest.buf, dest.len); -+ r->name[dest.len] = 0; ++ r->update.name = reftable_realloc(r->update.name, dest.len + 1); ++ memcpy(r->update.name, dest.buf, dest.len); ++ r->update.name[dest.len] = 0; + + strbuf_reset(&dest); + n = decode_string(&dest, in); @@ reftable/record.c (new) + goto done; + string_view_consume(&in, n); + -+ r->email = reftable_realloc(r->email, dest.len + 1); -+ memcpy(r->email, dest.buf, dest.len); -+ r->email[dest.len] = 0; ++ r->update.email = reftable_realloc(r->update.email, dest.len + 1); ++ memcpy(r->update.email, dest.buf, dest.len); ++ r->update.email[dest.len] = 0; + + ts = 0; + n = get_var_int(&ts, &in); + if (n < 0) + goto done; + string_view_consume(&in, n); -+ r->time = ts; ++ r->update.time = ts; + if (in.len < 2) + goto done; + -+ r->tz_offset = get_be16(in.buf); ++ r->update.tz_offset = get_be16(in.buf); + string_view_consume(&in, 2); + + strbuf_reset(&dest); @@ reftable/record.c (new) + goto done; + string_view_consume(&in, n); + -+ r->message = reftable_realloc(r->message, dest.len + 1); -+ memcpy(r->message, dest.buf, dest.len); -+ r->message[dest.len] = 0; ++ r->update.message = reftable_realloc(r->update.message, dest.len + 1); ++ memcpy(r->update.message, dest.buf, dest.len); ++ r->update.message[dest.len] = 0; + + strbuf_release(&dest); + return start.len - in.len; @@ reftable/record.c (new) +int reftable_log_record_equal(struct reftable_log_record *a, + struct reftable_log_record *b, int hash_size) +{ -+ return null_streq(a->name, b->name) && null_streq(a->email, b->email) && -+ null_streq(a->message, b->message) && -+ zero_hash_eq(a->old_hash, b->old_hash, hash_size) && -+ zero_hash_eq(a->new_hash, b->new_hash, hash_size) && -+ a->time == b->time && a->tz_offset == b->tz_offset && -+ a->update_index == b->update_index; ++ if (!(null_streq(a->refname, b->refname) && ++ a->update_index == b->update_index && ++ a->value_type == b->value_type)) ++ return 0; ++ ++ switch (a->value_type) { ++ case REFTABLE_LOG_DELETION: ++ return 1; ++ case REFTABLE_LOG_UPDATE: ++ return null_streq(a->update.name, b->update.name) && ++ a->update.time == b->update.time && ++ a->update.tz_offset == b->update.tz_offset && ++ null_streq(a->update.email, b->update.email) && ++ null_streq(a->update.message, b->update.message) && ++ zero_hash_eq(a->update.old_hash, b->update.old_hash, ++ hash_size) && ++ zero_hash_eq(a->update.new_hash, b->update.new_hash, ++ hash_size); ++ } ++ ++ abort(); +} + +static int reftable_log_record_is_deletion_void(const void *p) @@ reftable/record.c (new) + +int reftable_log_record_is_deletion(const struct reftable_log_record *log) +{ -+ return (log->new_hash == NULL && log->old_hash == NULL && -+ log->name == NULL && log->email == NULL && -+ log->message == NULL && log->time == 0 && log->tz_offset == 0 && -+ log->message == NULL); ++ return (log->value_type == REFTABLE_LOG_DELETION); +} + +void string_view_consume(struct string_view *s, int n) @@ reftable/record.h (new) ## reftable/record_test.c (new) ## @@ +/* -+Copyright 2020 Google LLC ++ Copyright 2020 Google LLC + -+Use of this source code is governed by a BSD-style -+license that can be found in the LICENSE file or at -+https://developers.google.com/open-source/licenses/bsd ++ Use of this source code is governed by a BSD-style ++ license that can be found in the LICENSE file or at ++ https://developers.google.com/open-source/licenses/bsd +*/ + +#include "record.h" @@ reftable/record_test.c (new) + struct reftable_log_record in[2] = { + { + .refname = xstrdup("refs/heads/master"), -+ .old_hash = reftable_malloc(SHA1_SIZE), -+ .new_hash = reftable_malloc(SHA1_SIZE), -+ .name = xstrdup("han-wen"), -+ .email = xstrdup("hanwen@google.com"), -+ .message = xstrdup("test"), + .update_index = 42, -+ .time = 1577123507, -+ .tz_offset = 100, ++ .value_type = REFTABLE_LOG_UPDATE, ++ .update = { ++ .old_hash = reftable_malloc(SHA1_SIZE), ++ .new_hash = reftable_malloc(SHA1_SIZE), ++ .name = xstrdup("han-wen"), ++ .email = xstrdup("hanwen@google.com"), ++ .message = xstrdup("test"), ++ .time = 1577123507, ++ .tz_offset = 100, ++ } + }, + { + .refname = xstrdup("refs/heads/master"), + .update_index = 22, ++ .value_type = REFTABLE_LOG_DELETION, + } + }; -+ set_test_hash(in[0].new_hash, 1); -+ set_test_hash(in[0].old_hash, 2); ++ set_test_hash(in[0].update.new_hash, 1); ++ set_test_hash(in[0].update.old_hash, 2); + for (int i = 0; i < ARRAY_SIZE(in); i++) { + struct reftable_record rec = { NULL }; + struct strbuf key = STRBUF_INIT; @@ reftable/record_test.c (new) + /* populate out, to check for leaks. */ + struct reftable_log_record out = { + .refname = xstrdup("old name"), -+ .new_hash = reftable_calloc(SHA1_SIZE), -+ .old_hash = reftable_calloc(SHA1_SIZE), -+ .name = xstrdup("old name"), -+ .email = xstrdup("old@email"), -+ .message = xstrdup("old message"), ++ .value_type = REFTABLE_LOG_UPDATE, ++ .update = { ++ .new_hash = reftable_calloc(SHA1_SIZE), ++ .old_hash = reftable_calloc(SHA1_SIZE), ++ .name = xstrdup("old name"), ++ .email = xstrdup("old@email"), ++ .message = xstrdup("old message"), ++ }, + }; + struct reftable_record rec_out = { NULL }; + int n, m, valtype; @@ reftable/reftable-record.h (new) + char *refname; + uint64_t update_index; /* logical timestamp of a transactional update. + */ -+ uint8_t *new_hash; -+ uint8_t *old_hash; -+ char *name; -+ char *email; -+ uint64_t time; -+ int16_t tz_offset; -+ char *message; ++ ++ enum { ++ /* tombstone to hide deletions from earlier tables */ ++ REFTABLE_LOG_DELETION = 0x0, ++ ++ /* a simple update */ ++ REFTABLE_LOG_UPDATE = 0x1, ++#define REFTABLE_NR_LOG_VALUETYPES 2 ++ } value_type; ++ ++ union { ++ struct { ++ uint8_t *new_hash; ++ uint8_t *old_hash; ++ char *name; ++ char *email; ++ uint64_t time; ++ int16_t tz_offset; ++ char *message; ++ } update; ++ }; +}; + +/* returns whether 'ref' represents the deletion of a log record. */ 7: a48b9937642e = 7: b108525009d9 reftable: reading/writing blocks 8: 6968dbc3828f = 8: b6eed7283aac reftable: a generic binary tree implementation 9: ff5b424d12fb ! 9: f2f005afca19 reftable: write reftable files @@ reftable/writer.c (new) + return err; +} + -+int reftable_writer_add_log(struct reftable_writer *w, -+ struct reftable_log_record *log) ++static int reftable_writer_add_log_verbatim(struct reftable_writer *w, ++ struct reftable_log_record *log) +{ + struct reftable_record rec = { NULL }; -+ char *input_log_message = log->message; -+ struct strbuf cleaned_message = STRBUF_INIT; -+ int err; -+ if (log->refname == NULL) -+ return REFTABLE_API_ERROR; -+ + if (w->block_writer != NULL && + block_writer_type(w->block_writer) == BLOCK_TYPE_REF) { + int err = writer_finish_public_section(w); @@ reftable/writer.c (new) + return err; + } + -+ if (!w->opts.exact_log_message && log->message != NULL) { -+ strbuf_addstr(&cleaned_message, log->message); ++ w->next -= w->pending_padding; ++ w->pending_padding = 0; ++ ++ reftable_record_from_log(&rec, log); ++ return writer_add_record(w, &rec); ++} ++ ++int reftable_writer_add_log(struct reftable_writer *w, ++ struct reftable_log_record *log) ++{ ++ char *input_log_message = NULL; ++ struct strbuf cleaned_message = STRBUF_INIT; ++ int err = 0; ++ ++ if (log->value_type == REFTABLE_LOG_DELETION) ++ return reftable_writer_add_log_verbatim(w, log); ++ ++ if (log->refname == NULL) ++ return REFTABLE_API_ERROR; ++ ++ input_log_message = log->update.message; ++ if (!w->opts.exact_log_message && log->update.message != NULL) { ++ strbuf_addstr(&cleaned_message, log->update.message); + while (cleaned_message.len && + cleaned_message.buf[cleaned_message.len - 1] == '\n') + strbuf_setlen(&cleaned_message, @@ reftable/writer.c (new) + goto done; + } + strbuf_addstr(&cleaned_message, "\n"); -+ log->message = cleaned_message.buf; ++ log->update.message = cleaned_message.buf; + } + -+ w->next -= w->pending_padding; -+ w->pending_padding = 0; -+ -+ reftable_record_from_log(&rec, log); -+ err = writer_add_record(w, &rec); -+ ++ err = reftable_writer_add_log_verbatim(w, log); ++ log->update.message = input_log_message; +done: -+ log->message = input_log_message; + strbuf_release(&cleaned_message); + return err; +} 10: 3c2de7dcc65c = 10: 1f17d5edab52 reftable: read reftable files 11: 03681b820d13 ! 11: c916629c562a reftable: reftable file level tests @@ reftable/reftable_test.c (new) + snprintf(name, sizeof(name), "refs/heads/branch%02d", i); + + log.refname = name; -+ log.new_hash = hash; + log.update_index = update_index; -+ log.message = "message"; ++ log.value_type = REFTABLE_LOG_UPDATE; ++ log.update.new_hash = hash; ++ log.update.message = "message"; + + n = reftable_writer_add_log(w, &log); + EXPECT(n == 0); @@ reftable/reftable_test.c (new) + .block_size = 4096, + }; + int err; -+ struct reftable_log_record log = { -+ .refname = "refs/heads/master", -+ .name = "Han-Wen Nienhuys", -+ .email = "hanwen@google.com", -+ .tz_offset = 100, -+ .time = 0x5e430672, -+ .update_index = 0xa, -+ .message = "commit: 9\n", -+ }; ++ struct reftable_log_record log = { .refname = "refs/heads/master", ++ .update_index = 0xa, ++ .value_type = REFTABLE_LOG_UPDATE, ++ .update = { ++ .name = "Han-Wen Nienhuys", ++ .email = "hanwen@google.com", ++ .tz_offset = 100, ++ .time = 0x5e430672, ++ .message = "commit: 9\n", ++ } }; + struct reftable_writer *w = + reftable_new_writer(&strbuf_add_void, &buf, &opts); + @@ reftable/reftable_test.c (new) + hash1[i] = (uint8_t)(rand() % 256); + hash2[i] = (uint8_t)(rand() % 256); + } -+ log.old_hash = hash1; -+ log.new_hash = hash2; ++ log.update.old_hash = hash1; ++ log.update.new_hash = hash2; + reftable_writer_set_limits(w, update_index, update_index); + err = reftable_writer_add_log(w, &log); + EXPECT_ERR(err); @@ reftable/reftable_test.c (new) + + log.refname = names[i]; + log.update_index = i; -+ log.old_hash = hash1; -+ log.new_hash = hash2; ++ log.value_type = REFTABLE_LOG_UPDATE; ++ log.update.old_hash = hash1; ++ log.update.new_hash = hash2; + + err = reftable_writer_add_log(w, &log); + EXPECT_ERR(err); 12: 557183d3e3e2 ! 12: 28aa69f7bbcb reftable: rest of library @@ Makefile: REFTABLE_OBJS += reftable/error.o ## reftable/VERSION (new) ## @@ -+9b4a54059db9a05c270c0a0587f245bc6868d576 C: use rand() rather than cobbled together random generator. ++a337d48d4d42d513d6baa33addc172f0e0e36288 C: use tagged union for reftable_log_record ## reftable/dump.c (new) ## @@ @@ reftable/stack.c (new) + continue; + } + -+ if (config != NULL && config->time > 0 && -+ log.time < config->time) { ++ if (config != NULL && config->min_update_index > 0 && ++ log.update_index < config->min_update_index) { + continue; + } + -+ if (config != NULL && config->min_update_index > 0 && -+ log.update_index < config->min_update_index) { ++ if (config != NULL && config->time > 0 && ++ log.update.time < config->time) { + continue; + } + @@ reftable/stack_test.c (new) + + logs[i].refname = xstrdup(buf); + logs[i].update_index = N + i + 1; -+ logs[i].new_hash = reftable_malloc(SHA1_SIZE); -+ logs[i].email = xstrdup("identity@invalid"); -+ set_test_hash(logs[i].new_hash, i); ++ logs[i].value_type = REFTABLE_LOG_UPDATE; ++ ++ logs[i].update.new_hash = reftable_malloc(SHA1_SIZE); ++ logs[i].update.email = xstrdup("identity@invalid"); ++ set_test_hash(logs[i].update.new_hash, i); + } + + for (i = 0; i < N; i++) { @@ reftable/stack_test.c (new) + + uint8_t h1[SHA1_SIZE] = { 0x01 }, h2[SHA1_SIZE] = { 0x02 }; + -+ struct reftable_log_record input = { -+ .refname = "branch", -+ .update_index = 1, -+ .new_hash = h1, -+ .old_hash = h2, -+ }; ++ struct reftable_log_record input = { .refname = "branch", ++ .update_index = 1, ++ .value_type = REFTABLE_LOG_UPDATE, ++ .update = { ++ .new_hash = h1, ++ .old_hash = h2, ++ } }; + struct reftable_log_record dest = { + .update_index = 0, + }; @@ reftable/stack_test.c (new) + err = reftable_new_stack(&st, dir, cfg); + EXPECT_ERR(err); + -+ input.message = "one\ntwo"; ++ input.update.message = "one\ntwo"; + err = reftable_stack_add(st, &write_test_log, &arg); + EXPECT(err == REFTABLE_API_ERROR); + -+ input.message = "one"; ++ input.update.message = "one"; + err = reftable_stack_add(st, &write_test_log, &arg); + EXPECT_ERR(err); + + err = reftable_stack_read_log(st, input.refname, &dest); + EXPECT_ERR(err); -+ EXPECT(0 == strcmp(dest.message, "one\n")); ++ EXPECT(0 == strcmp(dest.update.message, "one\n")); + -+ input.message = "two\n"; ++ input.update.message = "two\n"; + arg.update_index = 2; + err = reftable_stack_add(st, &write_test_log, &arg); + EXPECT_ERR(err); + err = reftable_stack_read_log(st, input.refname, &dest); + EXPECT_ERR(err); -+ EXPECT(0 == strcmp(dest.message, "two\n")); ++ EXPECT(0 == strcmp(dest.update.message, "two\n")); + + /* cleanup */ + reftable_stack_destroy(st); @@ reftable/stack_test.c (new) + refs[i].value.val1 = reftable_malloc(SHA1_SIZE); + set_test_hash(refs[i].value.val1, i); + } ++ + logs[i].refname = xstrdup(buf); + /* update_index is part of the key. */ + logs[i].update_index = 42; + if (i % 2 == 0) { -+ logs[i].new_hash = reftable_malloc(SHA1_SIZE); -+ set_test_hash(logs[i].new_hash, i); -+ logs[i].email = xstrdup("identity@invalid"); ++ logs[i].value_type = REFTABLE_LOG_UPDATE; ++ logs[i].update.new_hash = reftable_malloc(SHA1_SIZE); ++ set_test_hash(logs[i].update.new_hash, i); ++ logs[i].update.email = xstrdup("identity@invalid"); + } + } + for (i = 0; i < N; i++) { @@ reftable/stack_test.c (new) + + logs[i].refname = xstrdup(buf); + logs[i].update_index = i; -+ logs[i].time = i; -+ logs[i].new_hash = reftable_malloc(SHA1_SIZE); -+ logs[i].email = xstrdup("identity@invalid"); -+ set_test_hash(logs[i].new_hash, i); ++ logs[i].value_type = REFTABLE_LOG_UPDATE; ++ logs[i].update.time = i; ++ logs[i].update.new_hash = reftable_malloc(SHA1_SIZE); ++ logs[i].update.email = xstrdup("identity@invalid"); ++ set_test_hash(logs[i].update.new_hash, i); + } + + for (i = 1; i <= N; i++) { 13: d57023d9f13d ! 13: bdb19af22cc7 Reftable support for git-core @@ Commit message Signed-off-by: Han-Wen Nienhuys <hanwen@google.com> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Helped-by: Johannes Schindelin <johannes.schindelin@gmx.de> + Helped-by: Junio Hamano <gitster@pobox.com> Co-authored-by: Jeff King <peff@peff.net> ## Documentation/config/extensions.txt ## @@ builtin/init-db.c: int cmd_init_db(int argc, const char **argv, const char *pref ## builtin/worktree.c ## @@ - #include "submodule.h" #include "utf8.h" #include "worktree.h" + #include "quote.h" +#include "../refs/refs-internal.h" static const char * const worktree_usage[] = { @@ refs/reftable-backend.c (new) + +static void clear_reftable_log_record(struct reftable_log_record *log) +{ -+ log->old_hash = NULL; -+ log->new_hash = NULL; -+ log->message = NULL; + log->refname = NULL; ++ switch (log->value_type) { ++ case REFTABLE_LOG_UPDATE: ++ log->update.old_hash = NULL; ++ log->update.new_hash = NULL; ++ log->update.message = NULL; ++ break; ++ case REFTABLE_LOG_DELETION: ++ break; ++ } + reftable_log_record_release(log); +} + @@ refs/reftable-backend.c (new) + assert(0 == result); + + reftable_log_record_release(log); -+ log->name = ++ log->value_type = REFTABLE_LOG_UPDATE; ++ log->update.name = + xstrndup(split.name_begin, split.name_end - split.name_begin); -+ log->email = ++ log->update.email = + xstrndup(split.mail_begin, split.mail_end - split.mail_begin); -+ log->time = atol(split.date_begin); ++ log->update.time = atol(split.date_begin); + if (*split.tz_begin == '-') { + sign = -1; + split.tz_begin++; @@ refs/reftable-backend.c (new) + split.tz_begin++; + } + -+ log->tz_offset = sign * atoi(split.tz_begin); ++ log->update.tz_offset = sign * atoi(split.tz_begin); +} + +static int has_suffix(struct strbuf *b, const char *suffix) @@ refs/reftable-backend.c (new) + struct ref_update *u = sorted[i]; + struct reftable_log_record *log = &logs[i]; + fill_reftable_log_record(log); -+ log->refname = (char *)u->refname; -+ log->old_hash = u->old_oid.hash; -+ log->new_hash = u->new_oid.hash; + log->update_index = ts; -+ log->message = u->msg; ++ log->value_type = REFTABLE_LOG_UPDATE; ++ log->refname = (char *)u->refname; ++ log->update.old_hash = u->old_oid.hash; ++ log->update.new_hash = u->new_oid.hash; ++ log->update.message = u->msg; + + if (u->flags & REF_LOG_ONLY) { + continue; @@ refs/reftable-backend.c (new) + }; + struct reftable_ref_record current = { NULL }; + fill_reftable_log_record(&log); -+ log.message = xstrdup(arg->logmsg); -+ log.new_hash = NULL; -+ log.old_hash = NULL; + log.update_index = ts; + log.refname = (char *)arg->refnames->items[i].string; + ++ log.update.message = xstrdup(arg->logmsg); ++ log.update.new_hash = NULL; ++ log.update.old_hash = NULL; + if (reftable_stack_read_ref(arg->stack, log.refname, + ¤t) == 0) { -+ log.old_hash = reftable_ref_record_val1(¤t); ++ log.update.old_hash = ++ reftable_ref_record_val1(¤t); + } + err = reftable_writer_add_log(writer, &log); -+ log.old_hash = NULL; ++ log.update.old_hash = NULL; + reftable_ref_record_release(¤t); + + clear_reftable_log_record(&log); @@ refs/reftable-backend.c (new) + + fill_reftable_log_record(&log); + log.refname = (char *)create->refname; -+ log.message = (char *)create->logmsg; + log.update_index = ts; ++ log.update.message = (char *)create->logmsg; + if (refs_resolve_ref_unsafe( + (struct ref_store *)create->refs, create->refname, + RESOLVE_REF_READING, &old_oid, NULL) != NULL) { -+ log.old_hash = old_oid.hash; ++ log.update.old_hash = old_oid.hash; + } + + if (refs_resolve_ref_unsafe((struct ref_store *)create->refs, + create->target, RESOLVE_REF_READING, + &new_oid, NULL) != NULL) { -+ log.new_hash = new_oid.hash; ++ log.update.new_hash = new_oid.hash; + } + -+ if (log.old_hash != NULL || log.new_hash != NULL) { ++ if (log.update.old_hash != NULL || ++ log.update.new_hash != NULL) { + err = reftable_writer_add_log(writer, &log); + } + log.refname = NULL; -+ log.message = NULL; -+ log.old_hash = NULL; -+ log.new_hash = NULL; ++ log.update.message = NULL; ++ log.update.old_hash = NULL; ++ log.update.new_hash = NULL; + clear_reftable_log_record(&log); + } + return err; @@ refs/reftable-backend.c (new) + + todo[0].refname = (char *)arg->oldname; + todo[0].update_index = ts; -+ todo[0].message = (char *)arg->logmsg; -+ todo[0].old_hash = val1; -+ todo[0].new_hash = NULL; ++ todo[0].update.message = (char *)arg->logmsg; ++ todo[0].update.old_hash = val1; ++ todo[0].update.new_hash = NULL; + + todo[1].refname = (char *)arg->newname; + todo[1].update_index = ts; -+ todo[1].old_hash = NULL; -+ todo[1].new_hash = val1; -+ todo[1].message = (char *)arg->logmsg; ++ todo[1].update.old_hash = NULL; ++ todo[1].update.new_hash = val1; ++ todo[1].update.message = (char *)arg->logmsg; + + err = reftable_writer_add_logs(writer, todo, 2); + @@ refs/reftable-backend.c (new) + + free(ri->last_name); + ri->last_name = xstrdup(ri->log.refname); -+ hashcpy(ri->oid.hash, ri->log.new_hash); ++ hashcpy(ri->oid.hash, ri->log.update.new_hash); + return ITER_OK; + } +} @@ refs/reftable-backend.c (new) +static struct ref_iterator * +git_reftable_reflog_iterator_begin(struct ref_store *ref_store) +{ -+ struct git_reftable_reflog_ref_iterator *ri = xcalloc(sizeof(*ri), 1); ++ struct git_reftable_reflog_ref_iterator *ri = xcalloc(1, sizeof(*ri)); + struct git_reftable_ref_store *refs = + (struct git_reftable_ref_store *)ref_store; + @@ refs/reftable-backend.c (new) + break; + } + -+ hashcpy(old_oid.hash, log.old_hash); -+ hashcpy(new_oid.hash, log.new_hash); ++ hashcpy(old_oid.hash, log.update.old_hash); ++ hashcpy(new_oid.hash, log.update.new_hash); + -+ full_committer = fmt_ident(log.name, log.email, ++ full_committer = fmt_ident(log.update.name, log.update.email, + WANT_COMMITTER_IDENT, + /*date*/ NULL, IDENT_NO_DATE); -+ err = fn(&old_oid, &new_oid, full_committer, log.time, -+ log.tz_offset, log.message, cb_data); ++ err = fn(&old_oid, &new_oid, full_committer, log.update.time, ++ log.update.tz_offset, log.update.message, cb_data); + if (err) + break; + } @@ refs/reftable-backend.c (new) + struct object_id new_oid; + const char *full_committer = ""; + -+ hashcpy(old_oid.hash, log->old_hash); -+ hashcpy(new_oid.hash, log->new_hash); ++ hashcpy(old_oid.hash, log->update.old_hash); ++ hashcpy(new_oid.hash, log->update.new_hash); + -+ full_committer = fmt_ident(log->name, log->email, ++ full_committer = fmt_ident(log->update.name, log->update.email, + WANT_COMMITTER_IDENT, NULL, + IDENT_NO_DATE); -+ err = fn(&old_oid, &new_oid, full_committer, log->time, -+ log->tz_offset, log->message, cb_data); ++ err = fn(&old_oid, &new_oid, full_committer, log->update.time, ++ log->update.tz_offset, log->update.message, cb_data); + if (err) { + break; + } @@ refs/reftable-backend.c (new) + if (err > 0 || strcmp(log.refname, refname)) { + break; + } -+ hashcpy(ooid.hash, log.old_hash); -+ hashcpy(noid.hash, log.new_hash); ++ hashcpy(ooid.hash, log.update.old_hash); ++ hashcpy(noid.hash, log.update.new_hash); + -+ if (should_prune_fn(&ooid, &noid, log.email, -+ (timestamp_t)log.time, log.tz_offset, -+ log.message, policy_cb_data)) { ++ if (should_prune_fn(&ooid, &noid, log.update.email, ++ (timestamp_t)log.update.time, ++ log.update.tz_offset, log.update.message, ++ policy_cb_data)) { + add_log_tombstone(&arg, refname, log.update_index); + } + } @@ t/t0031-reftable.sh (new) + +INVALID_SHA1=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa + ++git_init () { ++ git init -b primary "$@" ++} ++ +initialize () { + rm -rf .git && -+ git init --ref-storage=reftable && ++ git_init --ref-storage=reftable && + mv .git/hooks .git/hooks-disabled +} + +test_expect_success 'SHA256 support, env' ' + rm -rf .git && + GIT_DEFAULT_HASH=sha256 && export GIT_DEFAULT_HASH && -+ git init --ref-storage=reftable && ++ git_init --ref-storage=reftable && + mv .git/hooks .git/hooks-disabled && + test_commit file +' + +test_expect_success 'SHA256 support, option' ' + rm -rf .git && -+ git init --ref-storage=reftable --object-format=sha256 && ++ git_init --ref-storage=reftable --object-format=sha256 && + mv .git/hooks .git/hooks-disabled && + test_commit file +' @@ t/t0031-reftable.sh (new) + initialize && + test_commit file && + SHA=$(git show-ref -s --verify HEAD) && -+ test_write_lines "$SHA refs/heads/master" "$SHA refs/tags/file" >expect && -+ git show-ref > actual && ++ test_write_lines "$SHA refs/heads/primary" "$SHA refs/tags/file" >expect && ++ git show-ref >actual && + ! git update-ref -d refs/tags/file $INVALID_SHA1 && + test_cmp expect actual && + git update-ref -d refs/tags/file $SHA && -+ test_write_lines "$SHA refs/heads/master" >expect && -+ git show-ref > actual && ++ test_write_lines "$SHA refs/heads/primary" >expect && ++ git show-ref >actual && + test_cmp expect actual +' + @@ t/t0031-reftable.sh (new) +test_expect_success 'basic operation of reftable storage: commit, show-ref' ' + initialize && + test_commit file && -+ test_write_lines refs/heads/master refs/tags/file >expect && ++ test_write_lines refs/heads/primary refs/tags/file >expect && + git show-ref && -+ git show-ref | cut -f2 -d" " > actual && ++ git show-ref | cut -f2 -d" " >actual && + test_cmp actual expect +' + @@ t/t0031-reftable.sh (new) + git pack-refs && + ls -1 .git/reftable >table-files && + test_line_count = 2 table-files && -+ git reflog refs/heads/master >output && ++ git reflog refs/heads/primary >output && + test_line_count = 10 output && + grep "commit (initial): number 1" output && + grep "commit: number 10" output && + git gc && -+ git reflog refs/heads/master >output && ++ git reflog refs/heads/primary >output && + test_line_count = 0 output +' + @@ t/t0031-reftable.sh (new) + test_commit file2 && + git checkout -b branch2 && + git switch - && -+ git rev-parse --symbolic-full-name HEAD > actual && -+ echo refs/heads/branch1 > expect && ++ git rev-parse --symbolic-full-name HEAD >actual && ++ echo refs/heads/branch1 >expect && + test_cmp actual expect +' + @@ t/t0031-reftable.sh (new) + test_commit file && + git tag -m "annotated tag" test_tag HEAD && + { -+ print_ref "refs/heads/master" && ++ print_ref "refs/heads/primary" && + print_ref "refs/tags/file" && + print_ref "refs/tags/test_tag" && + print_ref "refs/tags/test_tag^{}" @@ t/t0031-reftable.sh (new) +test_expect_success 'show-ref works on fresh repo' ' + initialize && + rm -rf .git && -+ git init --ref-storage=reftable && ++ git_init --ref-storage=reftable && + >expect && -+ ! git show-ref > actual && ++ ! git show-ref >actual && + test_cmp expect actual +' + +test_expect_success 'checkout unborn branch' ' + initialize && -+ git checkout -b master ++ git checkout -b primary +' + + +test_expect_success 'dir/file conflict' ' + initialize && + test_commit file && -+ ! git branch master/forbidden ++ ! git branch primary/forbidden +' + + +test_expect_success 'do not clobber existing repo' ' + rm -rf .git && -+ git init --ref-storage=files && -+ cat .git/HEAD > expect && ++ git_init --ref-storage=files && ++ cat .git/HEAD >expect && + test_commit file && -+ (git init --ref-storage=reftable || true) && -+ cat .git/HEAD > actual && ++ (git_init --ref-storage=reftable || true) && ++ cat .git/HEAD >actual && + test_cmp expect actual +' + @@ t/t0031-reftable.sh (new) +' + +test_expect_success 'worktrees' ' -+ git init --ref-storage=reftable start && ++ git_init --ref-storage=reftable start && + (cd start && test_commit file1 && git checkout -b branch1 && + git checkout -b branch2 && + git worktree add ../wt @@ t/t0031-reftable.sh (new) + initialize && + test_commit file1 && + mkdir existing_empty && -+ git worktree add --detach existing_empty master ++ git worktree add --detach existing_empty primary +' + +test_expect_success 'FETCH_HEAD' ' + initialize && + test_commit one && -+ (git init sub && cd sub && test_commit two) && ++ (git_init sub && cd sub && test_commit two) && + git --git-dir sub/.git rev-parse HEAD >expect && + git fetch sub && + git checkout FETCH_HEAD && @@ t/t1450-fsck.sh: test_description='git fsck random collection of tests git config i18n.commitencoding ISO-8859-1 && ## t/t3210-pack-refs.sh ## -@@ t/t3210-pack-refs.sh: semantic is still the same. - ' +@@ t/t3210-pack-refs.sh: export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME + . ./test-lib.sh +if test_have_prereq REFTABLE 14: 9df5bc69f971 = 14: 0d9477941678 git-prompt: prepare for reftable refs backend 15: 4076ef5d20b4 = 15: 59f432522230 Add "test-tool dump-reftable" command.