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From: "Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: "René Scharfe" <l.s.r@web.de>, "Taylor Blau" <me@ttaylorr.com>,
	"Derrick Stolee" <stolee@gmail.com>,
	"Elijah Newren" <newren@gmail.com>,
	"Johannes Schindelin" <johannes.schindelin@gmx.de>
Subject: [PATCH v3 0/7] scalar: implement the subcommand "diagnose"
Date: Wed, 04 May 2022 15:25:12 +0000	[thread overview]
Message-ID: <pull.1128.v3.git.1651677919.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1128.v2.git.1644187146.gitgitgadget@gmail.com>

Over the course of the years, we developed a sub-command that gathers
diagnostic data into a .zip file that can then be attached to bug reports.
This sub-command turned out to be very useful in helping Scalar developers
identify and fix issues.

Changes since v2:

 * Clarified in the commit message what the biggest benefit of
   --add-file-with-content is.
 * The <path> part of the -add-file-with-content argument can now contain
   colons. To do this, the path needs to start and end in double-quote
   characters (which are stripped), and the backslash serves as escape
   character in that case (to allow the path to contain both colons and
   double-quotes).
 * Fixed incorrect grammar.
 * Instead of strcmp(<what-we-don't-want>), we now say
   !strcmp(<what-we-want>).
 * The help text for --add-file-with-content was improved a tiny bit.
 * Adjusted the commit message that still talked about spawning plenty of
   processes and about a throw-away repository for the sake of generating a
   .zip file.
 * Simplified the code that shows the diagnostics and adds them to the .zip
   file.
 * The final message that reports that the archive is complete is now
   printed to stderr instead of stdout.

Changes since v1:

 * Instead of creating a throw-away repository, staging the contents of the
   .zip file and then using git write-tree and git archive to write the .zip
   file, the patch series now introduces a new option to git archive and
   uses write_archive() directly (avoiding any separate process).
 * Since the command avoids separate processes, it is now blazing fast on
   Windows, and I dropped the spinner() function because it's no longer
   needed.
 * While reworking the test case, I noticed that scalar [...] <enlistment>
   failed to verify that the specified directory exists, and would happily
   "traverse to its parent directory" on its quest to find a Scalar
   enlistment. That is of course incorrect, and has been fixed as a "while
   at it" sort of preparatory commit.
 * I had forgotten to sign off on all the commits, which has been fixed.
 * Instead of some "home-grown" readdir()-based function, the code now uses
   for_each_file_in_pack_dir() to look through the pack directories.
 * If any alternates are configured, their pack directories are now included
   in the output.
 * The commit message that might be interpreted to promise information about
   large loose files has been corrected to no longer promise that.
 * The test cases have been adjusted to test a little bit more (e.g.
   verifying that specific paths are mentioned in the output, instead of
   merely verifying that the output is non-empty).

Johannes Schindelin (5):
  archive: optionally add "virtual" files
  archive --add-file-with-contents: allow paths containing colons
  scalar: validate the optional enlistment argument
  Implement `scalar diagnose`
  scalar diagnose: include disk space information

Matthew John Cheetham (2):
  scalar: teach `diagnose` to gather packfile info
  scalar: teach `diagnose` to gather loose objects information

 Documentation/git-archive.txt    |  16 ++
 archive.c                        |  75 +++++++-
 contrib/scalar/scalar.c          | 289 ++++++++++++++++++++++++++++++-
 contrib/scalar/scalar.txt        |  12 ++
 contrib/scalar/t/t9099-scalar.sh |  27 +++
 t/t5003-archive-zip.sh           |  20 +++
 6 files changed, 429 insertions(+), 10 deletions(-)


base-commit: ddc35d833dd6f9e8946b09cecd3311b8aa18d295
Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-1128%2Fdscho%2Fscalar-diagnose-v3
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-1128/dscho/scalar-diagnose-v3
Pull-Request: https://github.com/gitgitgadget/git/pull/1128

Range-diff vs v2:

 1:  49ff3c1f2b3 ! 1:  45662cf582a archive: optionally add "virtual" files
     @@ Commit message
          archive` now supports use cases where relatively trivial files need to
          be added that do not exist on disk.
      
     +    This will allow us to generate `.zip` files with generated content,
     +    without having to add said content to the object database and without
     +    having to write it out to disk.
     +
          Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
      
       ## Documentation/git-archive.txt ##
     @@ Documentation/git-archive.txt: OPTIONS
      +	basename of <file>.
      ++
      +The `<path>` cannot contain any colon, the file mode is limited to
     -+a regular file, and the option may be subject platform-dependent
     ++a regular file, and the option may be subject to platform-dependent
      +command-line limits. For non-trivial cases, write an untracked file
      +and use `--add-file` instead.
      +
     @@ archive.c: static int add_file_cb(const struct option *opt, const char *arg, int
      -	if (!S_ISREG(info->stat.st_mode))
      -		die(_("Not a regular file: %s"), path);
      +
     -+	if (strcmp(opt->long_name, "add-file-with-content")) {
     ++	if (!strcmp(opt->long_name, "add-file")) {
      +		path = prefix_filename(args->prefix, arg);
      +		if (stat(path, &info->stat))
      +			die(_("File not found: %s"), path);
     @@ archive.c: static int parse_archive_args(int argc, const char **argv,
       		  N_("add untracked file to archive"), 0, add_file_cb,
       		  (intptr_t)&base },
      +		{ OPTION_CALLBACK, 0, "add-file-with-content", args,
     -+		  N_("file"), N_("add untracked file to archive"), 0,
     ++		  N_("path:content"), N_("add untracked file to archive"), 0,
      +		  add_file_cb, (intptr_t)&base },
       		OPT_STRING('o', "output", &output, N_("file"),
       			N_("write the archive to this file")),
 -:  ----------- > 2:  ce4b1b680c9 archive --add-file-with-contents: allow paths containing colons
 2:  600da8d465e = 3:  5a3eeb55409 scalar: validate the optional enlistment argument
 3:  0d570137bb6 ! 4:  dfe821d10fe Implement `scalar diagnose`
     @@ Commit message
          we had the luxury of a comprehensive standard library that includes
          basic functionality such as writing a `.zip` file. In the C version, we
          lack such a commodity. Rather than introducing a dependency on, say,
     -    libzip, we slightly abuse Git's `archive` command: Instead of writing
     -    the `.zip` file directly, we stage the file contents in a Git index of a
     -    temporary, bare repository, only to let `git archive` have at it, and
     -    finally removing the temporary repository.
     -
     -    Also note: Due to the frequently-spawned `git hash-object` processes,
     -    this command is quite a bit slow on Windows. Should it turn out to be a
     -    big problem, the lack of a batch mode of the `hash-object` command could
     -    potentially be worked around via using `git fast-import` with a crafted
     -    `stdin`.
     +    libzip, we slightly abuse Git's `archive` machinery: we write out a
     +    `.zip` of the empty try, augmented by a couple files that are added via
     +    the `--add-file*` options. We are careful trying not to modify the
     +    current repository in any way lest the very circumstances that required
     +    `scalar diagnose` to be run are changed by the `diagnose` run itself.
      
          Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
      
     @@ contrib/scalar/scalar.c: cleanup:
      +	time_t now = time(NULL);
      +	struct tm tm;
      +	struct strbuf path = STRBUF_INIT, buf = STRBUF_INIT;
     -+	size_t off;
      +	int res = 0;
      +
      +	argc = parse_options(argc, argv, NULL, options,
     @@ contrib/scalar/scalar.c: cleanup:
      +	strvec_pushl(&archiver_args, "scalar-diagnose", "--format=zip", NULL);
      +
      +	strbuf_reset(&buf);
     -+	strbuf_addstr(&buf,
     -+		      "--add-file-with-content=diagnostics.log:"
     -+		      "Collecting diagnostic info\n\n");
     ++	strbuf_addstr(&buf, "Collecting diagnostic info\n\n");
      +	get_version_info(&buf, 1);
      +
      +	strbuf_addf(&buf, "Enlistment root: %s\n", the_repository->worktree);
     -+	off = strchr(buf.buf, ':') + 1 - buf.buf;
     -+	write_or_die(stdout_fd, buf.buf + off, buf.len - off);
     -+	strvec_push(&archiver_args, buf.buf);
     ++	write_or_die(stdout_fd, buf.buf, buf.len);
     ++	strvec_pushf(&archiver_args,
     ++		     "--add-file-with-content=diagnostics.log:%.*s",
     ++		     (int)buf.len, buf.buf);
      +
      +	if ((res = add_directory_to_archiver(&archiver_args, ".git", 0)) ||
      +	    (res = add_directory_to_archiver(&archiver_args, ".git/hooks", 0)) ||
     @@ contrib/scalar/scalar.c: cleanup:
      +	}
      +
      +	if (!res)
     -+		printf("\n"
     ++		fprintf(stderr, "\n"
      +		       "Diagnostics complete.\n"
      +		       "All of the gathered info is captured in '%s'\n",
      +		       zip_path.buf);
 4:  938e38b5a09 ! 5:  bb162abd383 scalar diagnose: include disk space information
     @@ contrib/scalar/scalar.c: static int cmd_diagnose(int argc, const char **argv)
       
       	strbuf_addf(&buf, "Enlistment root: %s\n", the_repository->worktree);
      +	get_disk_info(&buf);
     - 	off = strchr(buf.buf, ':') + 1 - buf.buf;
     - 	write_or_die(stdout_fd, buf.buf + off, buf.len - off);
     - 	strvec_push(&archiver_args, buf.buf);
     + 	write_or_die(stdout_fd, buf.buf, buf.len);
     + 	strvec_pushf(&archiver_args,
     + 		     "--add-file-with-content=diagnostics.log:%.*s",
      
       ## contrib/scalar/t/t9099-scalar.sh ##
      @@ contrib/scalar/t/t9099-scalar.sh: SQ="'"
 5:  bd9428919fa ! 6:  32aaad7cce1 scalar: teach `diagnose` to gather packfile info
     @@ contrib/scalar/scalar.c: cleanup:
       {
       	struct option options[] = {
      @@ contrib/scalar/scalar.c: static int cmd_diagnose(int argc, const char **argv)
     - 	write_or_die(stdout_fd, buf.buf + off, buf.len - off);
     - 	strvec_push(&archiver_args, buf.buf);
     + 		     "--add-file-with-content=diagnostics.log:%.*s",
     + 		     (int)buf.len, buf.buf);
       
      +	strbuf_reset(&buf);
      +	strbuf_addstr(&buf, "--add-file-with-content=packs-local.txt:");
 6:  7a8875be425 = 7:  322932f0bb8 scalar: teach `diagnose` to gather loose objects information

-- 
gitgitgadget

  parent reply	other threads:[~2022-05-04 15:27 UTC|newest]

Thread overview: 140+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-26  8:41 [PATCH 0/5] " Johannes Schindelin via GitGitGadget
2022-01-26  8:41 ` [PATCH 1/5] Implement `scalar diagnose` Johannes Schindelin via GitGitGadget
2022-01-26  9:34   ` René Scharfe
2022-01-26 22:20     ` Taylor Blau
2022-02-06 21:34       ` Johannes Schindelin
2022-01-27 19:38   ` Elijah Newren
2022-01-26  8:41 ` [PATCH 2/5] scalar diagnose: include disk space information Johannes Schindelin via GitGitGadget
2022-01-26  8:41 ` [PATCH 3/5] scalar: teach `diagnose` to gather packfile info Matthew John Cheetham via GitGitGadget
2022-01-26 22:43   ` Taylor Blau
2022-01-27 15:14     ` Derrick Stolee
2022-02-06 21:38       ` Johannes Schindelin
2022-01-26  8:41 ` [PATCH 4/5] scalar: teach `diagnose` to gather loose objects information Matthew John Cheetham via GitGitGadget
2022-01-26 22:50   ` Taylor Blau
2022-01-27 15:17     ` Derrick Stolee
2022-01-27 18:59   ` Elijah Newren
2022-02-06 21:25     ` Johannes Schindelin
2022-01-26  8:41 ` [PATCH 5/5] scalar diagnose: show a spinner while staging content Johannes Schindelin via GitGitGadget
2022-01-27 15:19 ` [PATCH 0/5] scalar: implement the subcommand "diagnose" Derrick Stolee
2022-02-06 21:13   ` Johannes Schindelin
2022-02-06 22:39 ` [PATCH v2 0/6] " Johannes Schindelin via GitGitGadget
2022-02-06 22:39   ` [PATCH v2 1/6] archive: optionally add "virtual" files Johannes Schindelin via GitGitGadget
2022-02-07 19:55     ` René Scharfe
2022-02-07 23:30       ` Junio C Hamano
2022-02-08 13:12         ` Johannes Schindelin
2022-02-08 17:44           ` Junio C Hamano
2022-02-08 20:58             ` René Scharfe
2022-02-09 22:48               ` Junio C Hamano
2022-02-10 19:10                 ` René Scharfe
2022-02-10 19:23                   ` Junio C Hamano
2022-02-11 19:16                     ` René Scharfe
2022-02-11 21:27                       ` Junio C Hamano
2022-02-12  9:12                         ` René Scharfe
2022-02-13  6:25                           ` Junio C Hamano
2022-02-13  9:02                             ` René Scharfe
2022-02-14 17:22                               ` Junio C Hamano
2022-02-08 12:54       ` Johannes Schindelin
2022-02-06 22:39   ` [PATCH v2 2/6] scalar: validate the optional enlistment argument Johannes Schindelin via GitGitGadget
2022-02-06 22:39   ` [PATCH v2 3/6] Implement `scalar diagnose` Johannes Schindelin via GitGitGadget
2022-02-07 19:55     ` René Scharfe
2022-02-08 12:08       ` Johannes Schindelin
2022-02-06 22:39   ` [PATCH v2 4/6] scalar diagnose: include disk space information Johannes Schindelin via GitGitGadget
2022-02-06 22:39   ` [PATCH v2 5/6] scalar: teach `diagnose` to gather packfile info Matthew John Cheetham via GitGitGadget
2022-02-06 22:39   ` [PATCH v2 6/6] scalar: teach `diagnose` to gather loose objects information Matthew John Cheetham via GitGitGadget
2022-05-04 15:25   ` Johannes Schindelin via GitGitGadget [this message]
2022-05-04 15:25     ` [PATCH v3 1/7] archive: optionally add "virtual" files Johannes Schindelin via GitGitGadget
2022-05-04 15:25     ` [PATCH v3 2/7] archive --add-file-with-contents: allow paths containing colons Johannes Schindelin via GitGitGadget
2022-05-07  2:06       ` Elijah Newren
2022-05-09 21:04         ` Johannes Schindelin
2022-05-04 15:25     ` [PATCH v3 3/7] scalar: validate the optional enlistment argument Johannes Schindelin via GitGitGadget
2022-05-04 15:25     ` [PATCH v3 4/7] Implement `scalar diagnose` Johannes Schindelin via GitGitGadget
2022-05-04 15:25     ` [PATCH v3 5/7] scalar diagnose: include disk space information Johannes Schindelin via GitGitGadget
2022-05-04 15:25     ` [PATCH v3 6/7] scalar: teach `diagnose` to gather packfile info Matthew John Cheetham via GitGitGadget
2022-05-04 15:25     ` [PATCH v3 7/7] scalar: teach `diagnose` to gather loose objects information Matthew John Cheetham via GitGitGadget
2022-05-07  2:23     ` [PATCH v3 0/7] scalar: implement the subcommand "diagnose" Elijah Newren
2022-05-10 19:26     ` [PATCH v4 " Johannes Schindelin via GitGitGadget
2022-05-10 19:26       ` [PATCH v4 1/7] archive: optionally add "virtual" files Johannes Schindelin via GitGitGadget
2022-05-10 21:48         ` Junio C Hamano
2022-05-10 22:06           ` rsbecker
2022-05-10 23:21             ` Junio C Hamano
2022-05-11 16:14               ` René Scharfe
2022-05-11 19:27                 ` Junio C Hamano
2022-05-12 16:16                   ` René Scharfe
2022-05-12 18:15                     ` Junio C Hamano
2022-05-12 21:31                       ` Junio C Hamano
2022-05-14  7:06                         ` René Scharfe
2022-05-12 22:31           ` [PATCH] fixup! " Junio C Hamano
2022-05-10 19:26       ` [PATCH v4 2/7] archive --add-file-with-contents: allow paths containing colons Johannes Schindelin via GitGitGadget
2022-05-10 21:56         ` Junio C Hamano
2022-05-10 22:23           ` rsbecker
2022-05-19 18:12             ` Johannes Schindelin
2022-05-19 18:09           ` Johannes Schindelin
2022-05-19 18:44             ` Junio C Hamano
2022-05-10 19:27       ` [PATCH v4 3/7] scalar: validate the optional enlistment argument Johannes Schindelin via GitGitGadget
2022-05-17 14:51         ` Ævar Arnfjörð Bjarmason
2022-05-18 17:35           ` Junio C Hamano
2022-05-20  7:30             ` Ævar Arnfjörð Bjarmason
2022-05-20 15:55               ` Johannes Schindelin
2022-05-21  9:54                 ` Ævar Arnfjörð Bjarmason
2022-05-22  5:50                   ` Junio C Hamano
2022-05-24 12:25                     ` Johannes Schindelin
2022-05-24 18:11                       ` Ævar Arnfjörð Bjarmason
2022-05-24 19:29                         ` Junio C Hamano
2022-05-25 10:31                           ` Johannes Schindelin
2022-05-10 19:27       ` [PATCH v4 4/7] Implement `scalar diagnose` Johannes Schindelin via GitGitGadget
2022-05-17 14:53         ` Ævar Arnfjörð Bjarmason
2022-05-10 19:27       ` [PATCH v4 5/7] scalar diagnose: include disk space information Johannes Schindelin via GitGitGadget
2022-05-10 19:27       ` [PATCH v4 6/7] scalar: teach `diagnose` to gather packfile info Matthew John Cheetham via GitGitGadget
2022-05-10 19:27       ` [PATCH v4 7/7] scalar: teach `diagnose` to gather loose objects information Matthew John Cheetham via GitGitGadget
2022-05-17 15:03       ` [PATCH v4 0/7] scalar: implement the subcommand "diagnose" Ævar Arnfjörð Bjarmason
2022-05-17 15:28         ` rsbecker
2022-05-19 18:17           ` Johannes Schindelin
2022-05-19 18:17       ` [PATCH v5 " Johannes Schindelin via GitGitGadget
2022-05-19 18:17         ` [PATCH v5 1/7] archive: optionally add "virtual" files Johannes Schindelin via GitGitGadget
2022-05-20 14:41           ` René Scharfe
2022-05-20 16:21             ` Junio C Hamano
2022-05-19 18:17         ` [PATCH v5 2/7] archive --add-file-with-contents: allow paths containing colons Johannes Schindelin via GitGitGadget
2022-05-19 18:17         ` [PATCH v5 3/7] scalar: validate the optional enlistment argument Johannes Schindelin via GitGitGadget
2022-05-19 18:18         ` [PATCH v5 4/7] Implement `scalar diagnose` Johannes Schindelin via GitGitGadget
2022-05-19 18:18         ` [PATCH v5 5/7] scalar diagnose: include disk space information Johannes Schindelin via GitGitGadget
2022-05-19 18:18         ` [PATCH v5 6/7] scalar: teach `diagnose` to gather packfile info Matthew John Cheetham via GitGitGadget
2022-05-19 18:18         ` [PATCH v5 7/7] scalar: teach `diagnose` to gather loose objects information Matthew John Cheetham via GitGitGadget
2022-05-19 19:23         ` [PATCH v5 0/7] scalar: implement the subcommand "diagnose" Junio C Hamano
2022-05-21 15:08         ` [PATCH v6 " Johannes Schindelin via GitGitGadget
2022-05-21 15:08           ` [PATCH v6 1/7] archive: optionally add "virtual" files Johannes Schindelin via GitGitGadget
2022-05-25 21:11             ` Junio C Hamano
2022-05-26  9:09               ` René Scharfe
2022-05-26 17:10                 ` Junio C Hamano
2022-05-26 18:57                   ` René Scharfe
2022-05-26 20:16                     ` Junio C Hamano
2022-05-27 17:02                       ` René Scharfe
2022-05-27 19:01                         ` Junio C Hamano
2022-05-28  6:57                           ` René Scharfe
2022-05-21 15:08           ` [PATCH v6 2/7] archive --add-virtual-file: allow paths containing colons Johannes Schindelin via GitGitGadget
2022-05-25 20:22             ` Junio C Hamano
2022-05-25 21:42               ` Junio C Hamano
2022-05-25 22:34                 ` Junio C Hamano
2022-05-21 15:08           ` [PATCH v6 3/7] scalar: validate the optional enlistment argument Johannes Schindelin via GitGitGadget
2022-05-21 15:08           ` [PATCH v6 4/7] Implement `scalar diagnose` Johannes Schindelin via GitGitGadget
2022-05-21 15:08           ` [PATCH v6 5/7] scalar diagnose: include disk space information Johannes Schindelin via GitGitGadget
2022-05-21 15:08           ` [PATCH v6 6/7] scalar: teach `diagnose` to gather packfile info Matthew John Cheetham via GitGitGadget
2022-05-21 15:08           ` [PATCH v6 7/7] scalar: teach `diagnose` to gather loose objects information Matthew John Cheetham via GitGitGadget
2022-05-28 23:11           ` [PATCH v6+ 0/7] js/scalar-diagnose rebased Junio C Hamano
2022-05-28 23:11             ` [PATCH v6+ 1/7] archive: optionally add "virtual" files Junio C Hamano
2022-05-28 23:11             ` [PATCH v6+ 2/7] archive --add-virtual-file: allow paths containing colons Junio C Hamano
2022-06-15 18:16               ` Adam Dinwoodie
2022-06-15 20:00                 ` Junio C Hamano
2022-06-15 21:36                   ` Adam Dinwoodie
2022-06-18 20:19                     ` Johannes Schindelin
2022-06-18 22:05                       ` Junio C Hamano
2022-06-20  9:41                       ` Adam Dinwoodie
2022-05-28 23:11             ` [PATCH v6+ 3/7] scalar: validate the optional enlistment argument Junio C Hamano
2022-05-28 23:11             ` [PATCH v6+ 4/7] scalar: implement `scalar diagnose` Junio C Hamano
2022-06-10  2:08               ` Ævar Arnfjörð Bjarmason
2022-06-10 16:44                 ` Junio C Hamano
2022-06-10 17:35                   ` Ævar Arnfjörð Bjarmason
2022-05-28 23:11             ` [PATCH v6+ 5/7] scalar diagnose: include disk space information Junio C Hamano
2022-05-28 23:11             ` [PATCH v6+ 6/7] scalar: teach `diagnose` to gather packfile info Junio C Hamano
2022-05-28 23:11             ` [PATCH v6+ 7/7] scalar: teach `diagnose` to gather loose objects information Junio C Hamano
2022-05-30 10:12             ` [PATCH v6+ 0/7] js/scalar-diagnose rebased Johannes Schindelin
2022-05-30 17:37               ` Junio C Hamano

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