Mercurial > public > mercurial-scm > hg-stable
diff tests/test-wireproto-command-filedata.t @ 39819:d059cb669632
wireprotov2: allow multiple fields to follow revision maps
The *data wire protocol commands emit a series of CBOR values.
Because revision/delta data may be large, their data is emitted
outside the map as a top-level bytestring value.
Before this commit, we'd emit a single optional bytestring
value after the revision descriptor map. This got the job done.
But it was limiting in that we could only send a single field.
And, it required the consumer to know that the presence of a
key in the map implied the existence of a following bytestring
value.
This commit changes the encoding strategy so top-level bytestring
values in the stream are explicitly denoted in a "fieldsfollowing"
key. This key contains an array defining what fields that follow
and the expected size of each field.
By defining things this way, we can easily send N bytestring
values without any ambiguity about their order. In addition,
clients only need to know how to parse ``fieldsfollowing`` to
know if extra values are present.
Because this breaks backwards compatibility, we've bumped the version
number of the wire protocol version 2 API endpoint.
Differential Revision: https://phab.mercurial-scm.org/D4620
| author | Gregory Szorc <gregory.szorc@gmail.com> |
|---|---|
| date | Thu, 20 Sep 2018 12:57:23 -0700 |
| parents | 0b61d21f05cc |
| children | d3d333ab167a |
line wrap: on
line diff
--- a/tests/test-wireproto-command-filedata.t Mon Sep 17 11:54:00 2018 -0700 +++ b/tests/test-wireproto-command-filedata.t Thu Sep 20 12:57:23 2018 -0700 @@ -284,11 +284,11 @@ s> \xa1FstatusBok s> \r\n received frame(size=11; request=1; stream=2; streamflags=stream-begin; type=command-response; flags=continuation) - s> 42\r\n - s> :\x00\x00\x01\x00\x02\x001 - s> \xa1Jtotalitems\x01\xa2DnodeT\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xccLrevisionsize\x03Ca1\n + s> 50\r\n + s> H\x00\x00\x01\x00\x02\x001 + s> \xa1Jtotalitems\x01\xa2Ofieldsfollowing\x81\x82Hrevision\x03DnodeT\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xccCa1\n s> \r\n - received frame(size=58; request=1; stream=2; streamflags=; type=command-response; flags=continuation) + received frame(size=72; request=1; stream=2; streamflags=; type=command-response; flags=continuation) s> 8\r\n s> \x00\x00\x00\x01\x00\x02\x002 s> \r\n @@ -300,8 +300,13 @@ b'totalitems': 1 }, { - b'node': b'\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xcc', - b'revisionsize': 3 + b'fieldsfollowing': [ + [ + b'revision', + 3 + ] + ], + b'node': b'\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xcc' }, b'a1\n' ] @@ -338,11 +343,11 @@ s> \xa1FstatusBok s> \r\n received frame(size=11; request=1; stream=2; streamflags=stream-begin; type=command-response; flags=continuation) - s> 42\r\n - s> :\x00\x00\x01\x00\x02\x001 - s> \xa1Jtotalitems\x01\xa2DnodeT\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xccLrevisionsize\x03Ca1\n + s> 50\r\n + s> H\x00\x00\x01\x00\x02\x001 + s> \xa1Jtotalitems\x01\xa2Ofieldsfollowing\x81\x82Hrevision\x03DnodeT\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xccCa1\n s> \r\n - received frame(size=58; request=1; stream=2; streamflags=; type=command-response; flags=continuation) + received frame(size=72; request=1; stream=2; streamflags=; type=command-response; flags=continuation) s> 8\r\n s> \x00\x00\x00\x01\x00\x02\x002 s> \r\n @@ -354,8 +359,13 @@ b'totalitems': 1 }, { - b'node': b'\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xcc', - b'revisionsize': 3 + b'fieldsfollowing': [ + [ + b'revision', + 3 + ] + ], + b'node': b'\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xcc' }, b'a1\n' ] @@ -392,12 +402,12 @@ s> \xa1FstatusBok s> \r\n received frame(size=11; request=1; stream=2; streamflags=stream-begin; type=command-response; flags=continuation) - s> 6e\r\n - s> f\x00\x00\x01\x00\x02\x001 + s> 7c\r\n + s> t\x00\x00\x01\x00\x02\x001 s> \xa1Jtotalitems\x01\xa3MdeltabasenodeT+N\xb0s\x19\xbf\xa0w\xa4\n - s> /\x04\x916Y\xae\xf0\xdaB\xdaIdeltasize\x0fDnodeT\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xccO\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x03a1\n + s> /\x04\x916Y\xae\xf0\xdaB\xdaOfieldsfollowing\x81\x82Edelta\x0fDnodeT\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xccO\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x03a1\n s> \r\n - received frame(size=102; request=1; stream=2; streamflags=; type=command-response; flags=continuation) + received frame(size=116; request=1; stream=2; streamflags=; type=command-response; flags=continuation) s> 8\r\n s> \x00\x00\x00\x01\x00\x02\x002 s> \r\n @@ -410,7 +420,12 @@ }, { b'deltabasenode': b'+N\xb0s\x19\xbf\xa0w\xa4\n/\x04\x916Y\xae\xf0\xdaB\xda', - b'deltasize': 15, + b'fieldsfollowing': [ + [ + b'delta', + 15 + ] + ], b'node': b'\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xcc' }, b'\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x03a1\n' @@ -449,14 +464,14 @@ s> \xa1FstatusBok s> \r\n received frame(size=11; request=1; stream=2; streamflags=stream-begin; type=command-response; flags=continuation) - s> 9b\r\n - s> \x93\x00\x00\x01\x00\x02\x001 - s> \xa1Jtotalitems\x02\xa2DnodeT+N\xb0s\x19\xbf\xa0w\xa4\n - s> /\x04\x916Y\xae\xf0\xdaB\xdaLrevisionsize\x03Ca0\n + s> b7\r\n + s> \xaf\x00\x00\x01\x00\x02\x001 + s> \xa1Jtotalitems\x02\xa2Ofieldsfollowing\x81\x82Hrevision\x03DnodeT+N\xb0s\x19\xbf\xa0w\xa4\n + s> /\x04\x916Y\xae\xf0\xdaB\xdaCa0\n s> \xa3MdeltabasenodeT+N\xb0s\x19\xbf\xa0w\xa4\n - s> /\x04\x916Y\xae\xf0\xdaB\xdaIdeltasize\x0fDnodeT\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xccO\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x03a1\n + s> /\x04\x916Y\xae\xf0\xdaB\xdaOfieldsfollowing\x81\x82Edelta\x0fDnodeT\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xccO\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x03a1\n s> \r\n - received frame(size=147; request=1; stream=2; streamflags=; type=command-response; flags=continuation) + received frame(size=175; request=1; stream=2; streamflags=; type=command-response; flags=continuation) s> 8\r\n s> \x00\x00\x00\x01\x00\x02\x002 s> \r\n @@ -468,13 +483,23 @@ b'totalitems': 2 }, { - b'node': b'+N\xb0s\x19\xbf\xa0w\xa4\n/\x04\x916Y\xae\xf0\xdaB\xda', - b'revisionsize': 3 + b'fieldsfollowing': [ + [ + b'revision', + 3 + ] + ], + b'node': b'+N\xb0s\x19\xbf\xa0w\xa4\n/\x04\x916Y\xae\xf0\xdaB\xda' }, b'a0\n', { b'deltabasenode': b'+N\xb0s\x19\xbf\xa0w\xa4\n/\x04\x916Y\xae\xf0\xdaB\xda', - b'deltasize': 15, + b'fieldsfollowing': [ + [ + b'delta', + 15 + ] + ], b'node': b'\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xcc' }, b'\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x03a1\n' @@ -512,14 +537,14 @@ s> \xa1FstatusBok s> \r\n received frame(size=11; request=1; stream=2; streamflags=stream-begin; type=command-response; flags=continuation) - s> 9b\r\n - s> \x93\x00\x00\x01\x00\x02\x001 - s> \xa1Jtotalitems\x02\xa2DnodeT+N\xb0s\x19\xbf\xa0w\xa4\n - s> /\x04\x916Y\xae\xf0\xdaB\xdaLrevisionsize\x03Ca0\n + s> b7\r\n + s> \xaf\x00\x00\x01\x00\x02\x001 + s> \xa1Jtotalitems\x02\xa2Ofieldsfollowing\x81\x82Hrevision\x03DnodeT+N\xb0s\x19\xbf\xa0w\xa4\n + s> /\x04\x916Y\xae\xf0\xdaB\xdaCa0\n s> \xa3MdeltabasenodeT+N\xb0s\x19\xbf\xa0w\xa4\n - s> /\x04\x916Y\xae\xf0\xdaB\xdaIdeltasize\x0fDnodeT\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xccO\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x03a1\n + s> /\x04\x916Y\xae\xf0\xdaB\xdaOfieldsfollowing\x81\x82Edelta\x0fDnodeT\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xccO\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x03a1\n s> \r\n - received frame(size=147; request=1; stream=2; streamflags=; type=command-response; flags=continuation) + received frame(size=175; request=1; stream=2; streamflags=; type=command-response; flags=continuation) s> 8\r\n s> \x00\x00\x00\x01\x00\x02\x002 s> \r\n @@ -531,13 +556,23 @@ b'totalitems': 2 }, { - b'node': b'+N\xb0s\x19\xbf\xa0w\xa4\n/\x04\x916Y\xae\xf0\xdaB\xda', - b'revisionsize': 3 + b'fieldsfollowing': [ + [ + b'revision', + 3 + ] + ], + b'node': b'+N\xb0s\x19\xbf\xa0w\xa4\n/\x04\x916Y\xae\xf0\xdaB\xda' }, b'a0\n', { b'deltabasenode': b'+N\xb0s\x19\xbf\xa0w\xa4\n/\x04\x916Y\xae\xf0\xdaB\xda', - b'deltasize': 15, + b'fieldsfollowing': [ + [ + b'delta', + 15 + ] + ], b'node': b'\x9a8\x12)\x97\xb3\xac\x97\xbe*\x9a\xa2\xe5V\x83\x83A\xfd\xf2\xcc' }, b'\x00\x00\x00\x00\x00\x00\x00\x03\x00\x00\x00\x03a1\n' @@ -574,12 +609,12 @@ s> \xa1FstatusBok s> \r\n received frame(size=11; request=1; stream=2; streamflags=stream-begin; type=command-response; flags=continuation) - s> 75\r\n - s> m\x00\x00\x01\x00\x02\x001 - s> \xa1Jtotalitems\x01\xa3DnodeT\x08y4^97r)cKB\x0cc\x94T\x15g&\xc6\xb6Gparents\x82T+N\xb0s\x19\xbf\xa0w\xa4\n - s> /\x04\x916Y\xae\xf0\xdaB\xdaT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00Lrevisionsize\x03Ca2\n + s> 83\r\n + s> {\x00\x00\x01\x00\x02\x001 + s> \xa1Jtotalitems\x01\xa3Ofieldsfollowing\x81\x82Hrevision\x03DnodeT\x08y4^97r)cKB\x0cc\x94T\x15g&\xc6\xb6Gparents\x82T+N\xb0s\x19\xbf\xa0w\xa4\n + s> /\x04\x916Y\xae\xf0\xdaB\xdaT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00Ca2\n s> \r\n - received frame(size=109; request=1; stream=2; streamflags=; type=command-response; flags=continuation) + received frame(size=123; request=1; stream=2; streamflags=; type=command-response; flags=continuation) s> 8\r\n s> \x00\x00\x00\x01\x00\x02\x002 s> \r\n @@ -591,12 +626,17 @@ b'totalitems': 1 }, { + b'fieldsfollowing': [ + [ + b'revision', + 3 + ] + ], b'node': b'\x08y4^97r)cKB\x0cc\x94T\x15g&\xc6\xb6', b'parents': [ b'+N\xb0s\x19\xbf\xa0w\xa4\n/\x04\x916Y\xae\xf0\xdaB\xda', b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' - ], - b'revisionsize': 3 + ] }, b'a2\n' ]