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httppeer: implement command executor for version 2 peer...

httppeer: implement command executor for version 2 peer Now that we have a new API for issuing commands which is compatible with wire protocol version 2, we can start using it with wire protocol version 2. This commit replaces our hacky implementation of _call() with something a bit more robust based on the new command executor interface. We now have proper support for issuing multiple commands per HTTP request. Each HTTP request maintains its own client reactor. The implementation is similar to the one in the legacy wire protocol. We use a ThreadPoolExecutor for spinning up a thread to read the HTTP response in the background. This allows responses to resolve in any order. While not implemented on the server yet, a client could use concurrent.futures.as_completed() with a collection of futures and handle responses as they arrive from the server. The return value from issued commands is still a simple list of raw or decoded CBOR data. This is still super hacky. We will want a rich data type for representing command responses. But at least this commit gets us one step closer to a proper peer implementation. Differential Revision: https://phab.mercurial-scm.org/D3297

Matt Harbison - - Load All Authors

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      Tests of the file helper tool

        $ f -h

        ?sage: f [options] [filenames] (glob)

        ?ptions: (glob)

          -h, --help            show this help message and exit

          -t, --type            show file type (file or directory)

          -m, --mode            show file mode

          -l, --links           show number of links

          -s, --size            show size of file

          -n NEWER, --newer=NEWER

                                check if file is newer (or same)

          -r, --recurse         recurse into directories

          -S, --sha1            show sha1 hash of the content

          --sha256              show sha256 hash of the content

          -M, --md5             show md5 hash of the content

          -D, --dump            dump file content

          -H, --hexdump         hexdump file content

          -B BYTES, --bytes=BYTES

                                number of characters to dump

          -L LINES, --lines=LINES

                                number of lines to dump

          -q, --quiet           no default output

        $ mkdir dir

        $ cd dir

        $ f --size

        size=0

        $ echo hello | f --md5 --size

        size=6, md5=b1946ac92492d2347c6235b4d2611184

        $ f foo

        foo: file not found

        $ echo foo > foo

        $ f foo

        foo:

        $ f --sha1 foo

        foo: sha1=f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

        $ f --sha256 foo

        foo: sha256=b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

      #if symlink

        $ f foo --mode

        foo: mode=644

      #endif

      #if no-windows

        $ $PYTHON $TESTDIR/seq.py 10 > bar

      #else

      Convert CRLF -> LF for consistency

        $ $PYTHON $TESTDIR/seq.py 10 | sed "s/$//" > bar

      #endif

      #if unix-permissions symlink

        $ chmod +x bar

        $ f bar --newer foo --mode --type --size --dump --links --bytes 7

        bar: file, size=21, mode=755, links=1, newer than foo

        >>>

        1

        2

        3

        4

        <<< no trailing newline

      #endif

      #if unix-permissions

        $ ln bar baz

        $ f bar -n baz -l --hexdump -t --sha1 --lines=9 -B 20

        bar: file, links=2, newer than baz, sha1=612ca68d0305c821750a

        0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a |1.2.3.4.5.6.7.8.|

        0010: 39 0a                                           |9.|

        $ rm baz

      #endif

      #if unix-permissions symlink

        $ ln -s yadda l

        $ f . --recurse -MStmsB4

        .: directory with 3 files, mode=755

        ./bar: file, size=21, mode=755, md5=3b03, sha1=612c

        ./foo: file, size=4, mode=644, md5=d3b0, sha1=f1d2

        ./l: link, size=5, md5=2faa, sha1=af93

      #endif

        $ f --quiet bar -DL 3

        1

        2

        3

        $ cd ..

      Yadda is a symlink

        $ f -qr dir -HB 17

        dir: directory with 3 files (symlink !)

        dir: directory with 2 files (no-symlink !)

        dir/bar:

        0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a |1.2.3.4.5.6.7.8.|

        0010: 39                                              |9|

        dir/foo:

        0000: 66 6f 6f 0a                                     |foo.|

        dir/l: (symlink !)

        0000: 79 61 64 64 61                                  |yadda| (symlink !)

	Site-wide shortcuts
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g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
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	Repositories
g s	Goto summary page
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t s	Toggle sidebar on some pages

				Tests of the file helper tool

				$ f -h
				?sage: f [options] [filenames] (glob)

				?ptions: (glob)
				-h, --help show this help message and exit
				-t, --type show file type (file or directory)
				-m, --mode show file mode
				-l, --links show number of links
				-s, --size show size of file
				-n NEWER, --newer=NEWER
				check if file is newer (or same)
				-r, --recurse recurse into directories
				-S, --sha1 show sha1 hash of the content
				--sha256 show sha256 hash of the content
				-M, --md5 show md5 hash of the content
				-D, --dump dump file content
				-H, --hexdump hexdump file content
				-B BYTES, --bytes=BYTES
				number of characters to dump
				-L LINES, --lines=LINES
				number of lines to dump
				-q, --quiet no default output

				$ mkdir dir
				$ cd dir

				$ f --size
				size=0

				$ echo hello \| f --md5 --size
				size=6, md5=b1946ac92492d2347c6235b4d2611184

				$ f foo
				foo: file not found

				$ echo foo > foo
				$ f foo
				foo:

				$ f --sha1 foo
				foo: sha1=f1d2d2f924e986ac86fdf7b36c94bcdf32beec15

				$ f --sha256 foo
				foo: sha256=b5bb9d8014a0f9b1d61e21e796d78dccdf1352f23cd32812f4850b878ae4944c

				#if symlink
				$ f foo --mode
				foo: mode=644
				#endif

				#if no-windows
				$ $PYTHON $TESTDIR/seq.py 10 > bar
				#else
				Convert CRLF -> LF for consistency
				$ $PYTHON $TESTDIR/seq.py 10 \| sed "s/$//" > bar
				#endif

				#if unix-permissions symlink
				$ chmod +x bar
				$ f bar --newer foo --mode --type --size --dump --links --bytes 7
				bar: file, size=21, mode=755, links=1, newer than foo
				>>>
				1
				2
				3
				4
				<<< no trailing newline
				#endif

				#if unix-permissions
				$ ln bar baz
				$ f bar -n baz -l --hexdump -t --sha1 --lines=9 -B 20
				bar: file, links=2, newer than baz, sha1=612ca68d0305c821750a
				0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a \|1.2.3.4.5.6.7.8.\|
				0010: 39 0a \|9.\|
				$ rm baz
				#endif

				#if unix-permissions symlink
				$ ln -s yadda l
				$ f . --recurse -MStmsB4
				.: directory with 3 files, mode=755
				./bar: file, size=21, mode=755, md5=3b03, sha1=612c
				./foo: file, size=4, mode=644, md5=d3b0, sha1=f1d2
				./l: link, size=5, md5=2faa, sha1=af93
				#endif

				$ f --quiet bar -DL 3
				1
				2
				3

				$ cd ..

				Yadda is a symlink
				$ f -qr dir -HB 17
				dir: directory with 3 files (symlink !)
				dir: directory with 2 files (no-symlink !)
				dir/bar:
				0000: 31 0a 32 0a 33 0a 34 0a 35 0a 36 0a 37 0a 38 0a \|1.2.3.4.5.6.7.8.\|
				0010: 39 \|9\|
				dir/foo:
				0000: 66 6f 6f 0a \|foo.\|
				dir/l: (symlink !)
				0000: 79 61 64 64 61 \|yadda\| (symlink !)