freshlybakedca.ke
Git fork
1#define USE_THE_REPOSITORY_VARIABLE
2#include "builtin.h"
3#include "commit.h"
4#include "config.h"
5#include "environment.h"
6#include "gettext.h"
7#include "hex.h"
8#include "parse-options.h"
9#include "commit-graph.h"
10#include "odb.h"
11#include "progress.h"
12#include "replace-object.h"
13#include "strbuf.h"
14#include "tag.h"
15#include "trace2.h"
16
17#define BUILTIN_COMMIT_GRAPH_VERIFY_USAGE \
18 N_("git commit-graph verify [--object-dir <dir>] [--shallow] [--[no-]progress]")
19
20#define BUILTIN_COMMIT_GRAPH_WRITE_USAGE \
21 N_("git commit-graph write [--object-dir <dir>] [--append]\n" \
22 " [--split[=<strategy>]] [--reachable | --stdin-packs | --stdin-commits]\n" \
23 " [--changed-paths] [--[no-]max-new-filters <n>] [--[no-]progress]\n" \
24 " <split-options>")
25
26static const char * const builtin_commit_graph_verify_usage[] = {
27 BUILTIN_COMMIT_GRAPH_VERIFY_USAGE,
28 NULL
29};
30
31static const char * const builtin_commit_graph_write_usage[] = {
32 BUILTIN_COMMIT_GRAPH_WRITE_USAGE,
33 NULL
34};
35
36static char const * const builtin_commit_graph_usage[] = {
37 BUILTIN_COMMIT_GRAPH_VERIFY_USAGE,
38 BUILTIN_COMMIT_GRAPH_WRITE_USAGE,
39 NULL,
40};
41
42static struct opts_commit_graph {
43 const char *obj_dir;
44 int reachable;
45 int stdin_packs;
46 int stdin_commits;
47 int append;
48 int split;
49 int shallow;
50 int progress;
51 int enable_changed_paths;
52} opts;
53
54static struct option common_opts[] = {
55 OPT_STRING(0, "object-dir", &opts.obj_dir,
56 N_("dir"),
57 N_("the object directory to store the graph")),
58 OPT_END()
59};
60
61static struct option *add_common_options(struct option *to)
62{
63 return parse_options_concat(common_opts, to);
64}
65
66static int graph_verify(int argc, const char **argv, const char *prefix,
67 struct repository *repo UNUSED)
68{
69 struct commit_graph *graph = NULL;
70 struct odb_source *source = NULL;
71 char *graph_name;
72 char *chain_name;
73 enum { OPENED_NONE, OPENED_GRAPH, OPENED_CHAIN } opened = OPENED_NONE;
74 int fd;
75 struct stat st;
76 int flags = 0;
77 int incomplete_chain = 0;
78 int ret;
79
80 static struct option builtin_commit_graph_verify_options[] = {
81 OPT_BOOL(0, "shallow", &opts.shallow,
82 N_("if the commit-graph is split, only verify the tip file")),
83 OPT_BOOL(0, "progress", &opts.progress,
84 N_("force progress reporting")),
85 OPT_END(),
86 };
87 struct option *options = add_common_options(builtin_commit_graph_verify_options);
88
89 trace2_cmd_mode("verify");
90
91 opts.progress = isatty(2);
92 argc = parse_options(argc, argv, prefix,
93 options,
94 builtin_commit_graph_verify_usage, 0);
95 if (argc)
96 usage_with_options(builtin_commit_graph_verify_usage, options);
97
98 if (!opts.obj_dir)
99 opts.obj_dir = repo_get_object_directory(the_repository);
100 if (opts.shallow)
101 flags |= COMMIT_GRAPH_VERIFY_SHALLOW;
102 if (opts.progress)
103 flags |= COMMIT_GRAPH_WRITE_PROGRESS;
104
105 source = odb_find_source_or_die(the_repository->objects, opts.obj_dir);
106 graph_name = get_commit_graph_filename(source);
107 chain_name = get_commit_graph_chain_filename(source);
108 if (open_commit_graph(graph_name, &fd, &st))
109 opened = OPENED_GRAPH;
110 else if (errno != ENOENT)
111 die_errno(_("Could not open commit-graph '%s'"), graph_name);
112 else if (open_commit_graph_chain(chain_name, &fd, &st,
113 the_repository->hash_algo))
114 opened = OPENED_CHAIN;
115 else if (errno != ENOENT)
116 die_errno(_("could not open commit-graph chain '%s'"), chain_name);
117
118 FREE_AND_NULL(graph_name);
119 FREE_AND_NULL(chain_name);
120 FREE_AND_NULL(options);
121
122 if (opened == OPENED_NONE)
123 return 0;
124 else if (opened == OPENED_GRAPH)
125 graph = load_commit_graph_one_fd_st(source, fd, &st);
126 else
127 graph = load_commit_graph_chain_fd_st(the_repository->objects, fd, &st,
128 &incomplete_chain);
129
130 if (!graph)
131 return 1;
132
133 ret = verify_commit_graph(graph, flags);
134 free_commit_graph(graph);
135
136 if (incomplete_chain) {
137 error("one or more commit-graph chain files could not be loaded");
138 ret |= 1;
139 }
140
141 return ret;
142}
143
144extern int read_replace_refs;
145static struct commit_graph_opts write_opts;
146
147static int write_option_parse_split(const struct option *opt, const char *arg,
148 int unset)
149{
150 enum commit_graph_split_flags *flags = opt->value;
151
152 BUG_ON_OPT_NEG(unset);
153
154 opts.split = 1;
155 if (!arg)
156 return 0;
157
158 if (!strcmp(arg, "no-merge"))
159 *flags = COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED;
160 else if (!strcmp(arg, "replace"))
161 *flags = COMMIT_GRAPH_SPLIT_REPLACE;
162 else
163 die(_("unrecognized --split argument, %s"), arg);
164
165 return 0;
166}
167
168static int read_one_commit(struct oidset *commits, struct progress *progress,
169 const char *hash)
170{
171 struct object *result;
172 struct object_id oid;
173 const char *end;
174
175 if (parse_oid_hex(hash, &oid, &end))
176 return error(_("unexpected non-hex object ID: %s"), hash);
177
178 result = deref_tag(the_repository, parse_object(the_repository, &oid),
179 NULL, 0);
180 if (!result)
181 return error(_("invalid object: %s"), hash);
182 else if (object_as_type(result, OBJ_COMMIT, 1))
183 oidset_insert(commits, &result->oid);
184
185 display_progress(progress, oidset_size(commits));
186
187 return 0;
188}
189
190static int write_option_max_new_filters(const struct option *opt,
191 const char *arg,
192 int unset)
193{
194 int *to = opt->value;
195 if (unset)
196 *to = -1;
197 else {
198 const char *s;
199 *to = strtol(arg, (char **)&s, 10);
200 if (*s)
201 return error(_("option `%s' expects a numerical value"),
202 "max-new-filters");
203 }
204 return 0;
205}
206
207static int git_commit_graph_write_config(const char *var, const char *value,
208 const struct config_context *ctx,
209 void *cb UNUSED)
210{
211 if (!strcmp(var, "commitgraph.maxnewfilters"))
212 write_opts.max_new_filters = git_config_int(var, value, ctx->kvi);
213 /*
214 * No need to fall-back to 'git_default_config', since this was already
215 * called in 'cmd_commit_graph()'.
216 */
217 return 0;
218}
219
220static int graph_write(int argc, const char **argv, const char *prefix,
221 struct repository *repo UNUSED)
222{
223 struct string_list pack_indexes = STRING_LIST_INIT_DUP;
224 struct strbuf buf = STRBUF_INIT;
225 struct oidset commits = OIDSET_INIT;
226 struct odb_source *source = NULL;
227 int result = 0;
228 enum commit_graph_write_flags flags = 0;
229 struct progress *progress = NULL;
230
231 static struct option builtin_commit_graph_write_options[] = {
232 OPT_BOOL(0, "reachable", &opts.reachable,
233 N_("start walk at all refs")),
234 OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
235 N_("scan pack-indexes listed by stdin for commits")),
236 OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
237 N_("start walk at commits listed by stdin")),
238 OPT_BOOL(0, "append", &opts.append,
239 N_("include all commits already in the commit-graph file")),
240 OPT_BOOL(0, "changed-paths", &opts.enable_changed_paths,
241 N_("enable computation for changed paths")),
242 OPT_CALLBACK_F(0, "split", &write_opts.split_flags, NULL,
243 N_("allow writing an incremental commit-graph file"),
244 PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
245 write_option_parse_split),
246 OPT_INTEGER(0, "max-commits", &write_opts.max_commits,
247 N_("maximum number of commits in a non-base split commit-graph")),
248 OPT_INTEGER(0, "size-multiple", &write_opts.size_multiple,
249 N_("maximum ratio between two levels of a split commit-graph")),
250 OPT_EXPIRY_DATE(0, "expire-time", &write_opts.expire_time,
251 N_("only expire files older than a given date-time")),
252 OPT_CALLBACK_F(0, "max-new-filters", &write_opts.max_new_filters,
253 NULL, N_("maximum number of changed-path Bloom filters to compute"),
254 0, write_option_max_new_filters),
255 OPT_BOOL(0, "progress", &opts.progress,
256 N_("force progress reporting")),
257 OPT_END(),
258 };
259 struct option *options = add_common_options(builtin_commit_graph_write_options);
260
261 opts.progress = isatty(2);
262 opts.enable_changed_paths = -1;
263 write_opts.size_multiple = 2;
264 write_opts.max_commits = 0;
265 write_opts.expire_time = 0;
266 write_opts.max_new_filters = -1;
267
268 trace2_cmd_mode("write");
269
270 repo_config(the_repository, git_commit_graph_write_config, &opts);
271
272 argc = parse_options(argc, argv, prefix,
273 options,
274 builtin_commit_graph_write_usage, 0);
275 if (argc)
276 usage_with_options(builtin_commit_graph_write_usage, options);
277
278 if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
279 die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
280 if (!opts.obj_dir)
281 opts.obj_dir = repo_get_object_directory(the_repository);
282 if (opts.append)
283 flags |= COMMIT_GRAPH_WRITE_APPEND;
284 if (opts.split)
285 flags |= COMMIT_GRAPH_WRITE_SPLIT;
286 if (opts.progress)
287 flags |= COMMIT_GRAPH_WRITE_PROGRESS;
288 if (!opts.enable_changed_paths)
289 flags |= COMMIT_GRAPH_NO_WRITE_BLOOM_FILTERS;
290 if (opts.enable_changed_paths == 1 ||
291 git_env_bool(GIT_TEST_COMMIT_GRAPH_CHANGED_PATHS, 0))
292 flags |= COMMIT_GRAPH_WRITE_BLOOM_FILTERS;
293
294 source = odb_find_source_or_die(the_repository->objects, opts.obj_dir);
295
296 if (opts.reachable) {
297 if (write_commit_graph_reachable(source, flags, &write_opts))
298 result = 1;
299 goto cleanup;
300 }
301
302 if (opts.stdin_packs) {
303 while (strbuf_getline(&buf, stdin) != EOF)
304 string_list_append_nodup(&pack_indexes,
305 strbuf_detach(&buf, NULL));
306 } else if (opts.stdin_commits) {
307 oidset_init(&commits, 0);
308 if (opts.progress)
309 progress = start_delayed_progress(
310 the_repository,
311 _("Collecting commits from input"), 0);
312
313 while (strbuf_getline(&buf, stdin) != EOF) {
314 if (read_one_commit(&commits, progress, buf.buf)) {
315 result = 1;
316 stop_progress(&progress);
317 goto cleanup;
318 }
319 }
320
321 stop_progress(&progress);
322 }
323
324 if (write_commit_graph(source,
325 opts.stdin_packs ? &pack_indexes : NULL,
326 opts.stdin_commits ? &commits : NULL,
327 flags,
328 &write_opts))
329 result = 1;
330
331cleanup:
332 FREE_AND_NULL(options);
333 string_list_clear(&pack_indexes, 0);
334 strbuf_release(&buf);
335 oidset_clear(&commits);
336 return result;
337}
338
339int cmd_commit_graph(int argc,
340 const char **argv,
341 const char *prefix,
342 struct repository *repo)
343{
344 parse_opt_subcommand_fn *fn = NULL;
345 struct option builtin_commit_graph_options[] = {
346 OPT_SUBCOMMAND("verify", &fn, graph_verify),
347 OPT_SUBCOMMAND("write", &fn, graph_write),
348 OPT_END(),
349 };
350 struct option *options = parse_options_concat(builtin_commit_graph_options, common_opts);
351
352 repo_config(the_repository, git_default_config, NULL);
353
354 disable_replace_refs();
355 save_commit_buffer = 0;
356
357 argc = parse_options(argc, argv, prefix, options,
358 builtin_commit_graph_usage, 0);
359 FREE_AND_NULL(options);
360
361 return fn(argc, argv, prefix, repo);
362}