Protocol switch from using generators to stream-like objects.
This allows the the pull side to precisely control how much data is
read so that another encapsulation layer is not needed.
An http client gets a response with a finite size. Because ssh clients
need to keep the stream open, we must not read more data than is sent
in a response. But due to the streaming nature of the changegroup
scheme, only the piece that's parsing the data knows how far it's
allowed to read.
This means the generator scheme isn't fine-grained enough. Instead we
need file-like objects with a read(x) method. This switches everything
for push/pull over to using file-like objects rather than generators.
+ hg --debug init
+ echo this is a1
+ hg add a
+ hg commit -t0 -d '0 0' -u user
+ echo this is b1
+ hg add b
+ hg commit -t1 -d '0 0' -u user
+ hg manifest 1
05f9e54f4c9b86b09099803d8b49a50edcb4eaab 644 a
54837d97f2932a8194e69745a280a2c11e61ff9c 644 b
+ echo this is c1
+ hg rawcommit -p 1 -d '0 0' -u user -t2 c
+ hg manifest 2
05f9e54f4c9b86b09099803d8b49a50edcb4eaab 644 a
54837d97f2932a8194e69745a280a2c11e61ff9c 644 b
76d5e637cbec1bcc04a5a3fa4bcc7d13f6847c00 644 c
+ hg parents
changeset: 2:c4ef0ef0554dff3ceade68d75539e4f208a2be0a
tag: tip
user: user
date: Thu Jan 1 00:00:00 1970
summary: 2
+ rm b
+ hg rawcommit -p 2 -d '0 0' -u user -t3 b
+ hg manifest 3
05f9e54f4c9b86b09099803d8b49a50edcb4eaab 644 a
76d5e637cbec1bcc04a5a3fa4bcc7d13f6847c00 644 c
+ hg parents
changeset: 3:923669243607c26c4c8f0c11f48c1182ce1a7aff
tag: tip
user: user
date: Thu Jan 1 00:00:00 1970
summary: 3
+ echo this is a22
+ hg rawcommit -p 3 -d '0 0' -u user -t4 a
+ hg manifest 4
d6e3c4976c13feb1728cd3ac851abaf7256a5c23 644 a
76d5e637cbec1bcc04a5a3fa4bcc7d13f6847c00 644 c
+ hg parents
changeset: 4:2361ec7b1da5142bce1285c50f3bb2960706263d
tag: tip
user: user
date: Thu Jan 1 00:00:00 1970
summary: 4
+ echo this is c22
+ hg rawcommit -p 1 -d '0 0' -u user -t5 c
+ hg manifest 5
05f9e54f4c9b86b09099803d8b49a50edcb4eaab 644 a
54837d97f2932a8194e69745a280a2c11e61ff9c 644 b
3570202ceac2b52517df64ebd0a062cb0d8fe33a 644 c
+ hg parents
changeset: 4:2361ec7b1da5142bce1285c50f3bb2960706263d
user: user
date: Thu Jan 1 00:00:00 1970
summary: 4
+ hg rawcommit -p 4 -p 5 -d '0 0' -u user -t6
+ hg manifest 6
d6e3c4976c13feb1728cd3ac851abaf7256a5c23 644 a
76d5e637cbec1bcc04a5a3fa4bcc7d13f6847c00 644 c
+ hg parents
changeset: 6:aaf55aee7b6249fd7d4ba295d98c4492ec2740d7
tag: tip
parent: 4:2361ec7b1da5142bce1285c50f3bb2960706263d
parent: 5:f8292b00383d88b470efcb2ea9c71409832ec9d6
user: user
date: Thu Jan 1 00:00:00 1970
summary: 6
+ hg rawcommit -p 6 -d '0 0' -u user -t7
+ hg manifest 7
d6e3c4976c13feb1728cd3ac851abaf7256a5c23 644 a
76d5e637cbec1bcc04a5a3fa4bcc7d13f6847c00 644 c
+ hg parents
changeset: 7:836ff890ac9ecb8c4b7c209b3e8b93f8805ca5f0
tag: tip
user: user
date: Thu Jan 1 00:00:00 1970
summary: 7