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42cc7485 JT |
1 | #!/bin/sh |
2 | ||
3 | test_description='test skipping fetch negotiator' | |
4 | . ./test-lib.sh | |
5 | ||
6 | have_sent () { | |
7 | while test "$#" -ne 0 | |
8 | do | |
9 | grep "fetch> have $(git -C client rev-parse $1)" trace | |
10 | if test $? -ne 0 | |
11 | then | |
12 | echo "No have $(git -C client rev-parse $1) ($1)" | |
13 | return 1 | |
14 | fi | |
15 | shift | |
16 | done | |
17 | } | |
18 | ||
19 | have_not_sent () { | |
20 | while test "$#" -ne 0 | |
21 | do | |
22 | grep "fetch> have $(git -C client rev-parse $1)" trace | |
23 | if test $? -eq 0 | |
24 | then | |
25 | return 1 | |
26 | fi | |
27 | shift | |
28 | done | |
29 | } | |
30 | ||
b6e7fc4f JK |
31 | # trace_fetch <client_dir> <server_dir> [args] |
32 | # | |
33 | # Trace the packet output of fetch, but make sure we disable the variable | |
34 | # in the child upload-pack, so we don't combine the results in the same file. | |
35 | trace_fetch () { | |
36 | client=$1; shift | |
37 | server=$1; shift | |
38 | GIT_TRACE_PACKET="$(pwd)/trace" \ | |
39 | git -C "$client" fetch \ | |
40 | --upload-pack 'unset GIT_TRACE_PACKET; git-upload-pack' \ | |
41 | "$server" "$@" | |
42 | } | |
43 | ||
42cc7485 JT |
44 | test_expect_success 'commits with no parents are sent regardless of skip distance' ' |
45 | git init server && | |
46 | test_commit -C server to_fetch && | |
47 | ||
48 | git init client && | |
b2fa7a23 | 49 | for i in $(test_seq 7) |
42cc7485 JT |
50 | do |
51 | test_commit -C client c$i | |
52 | done && | |
53 | ||
54 | # We send: "c7" (skip 1) "c5" (skip 2) "c2" (skip 4). After that, since | |
55 | # "c1" has no parent, it is still sent as "have" even though it would | |
56 | # normally be skipped. | |
57 | test_config -C client fetch.negotiationalgorithm skipping && | |
b6e7fc4f | 58 | trace_fetch client "$(pwd)/server" && |
42cc7485 JT |
59 | have_sent c7 c5 c2 c1 && |
60 | have_not_sent c6 c4 c3 | |
61 | ' | |
62 | ||
63 | test_expect_success 'when two skips collide, favor the larger one' ' | |
64 | rm -rf server client trace && | |
65 | git init server && | |
66 | test_commit -C server to_fetch && | |
67 | ||
68 | git init client && | |
b2fa7a23 | 69 | for i in $(test_seq 11) |
42cc7485 JT |
70 | do |
71 | test_commit -C client c$i | |
72 | done && | |
73 | git -C client checkout c5 && | |
74 | test_commit -C client c5side && | |
75 | ||
76 | # Before reaching c5, we send "c5side" (skip 1) and "c11" (skip 1) "c9" | |
77 | # (skip 2) "c6" (skip 4). The larger skip (skip 4) takes precedence, so | |
78 | # the next "have" sent will be "c1" (from "c6" skip 4) and not "c4" | |
79 | # (from "c5side" skip 1). | |
80 | test_config -C client fetch.negotiationalgorithm skipping && | |
b6e7fc4f | 81 | trace_fetch client "$(pwd)/server" && |
42cc7485 JT |
82 | have_sent c5side c11 c9 c6 c1 && |
83 | have_not_sent c10 c8 c7 c5 c4 c3 c2 | |
84 | ' | |
85 | ||
86 | test_expect_success 'use ref advertisement to filter out commits' ' | |
87 | rm -rf server client trace && | |
88 | git init server && | |
89 | test_commit -C server c1 && | |
90 | test_commit -C server c2 && | |
91 | test_commit -C server c3 && | |
92 | git -C server tag -d c1 c2 c3 && | |
93 | ||
94 | git clone server client && | |
95 | test_commit -C client c4 && | |
96 | test_commit -C client c5 && | |
97 | git -C client checkout c4^^ && | |
98 | test_commit -C client c2side && | |
99 | ||
100 | git -C server checkout --orphan anotherbranch && | |
101 | test_commit -C server to_fetch && | |
102 | ||
103 | # The server advertising "c3" (as "refs/heads/master") means that we do | |
104 | # not need to send any ancestors of "c3", but we still need to send "c3" | |
105 | # itself. | |
106 | test_config -C client fetch.negotiationalgorithm skipping && | |
010834a8 JT |
107 | |
108 | # The ref advertisement itself is filtered when protocol v2 is used, so | |
109 | # use v0. | |
c7973f24 | 110 | ( |
8a1b0978 | 111 | GIT_TEST_PROTOCOL_VERSION=0 && |
c7973f24 JN |
112 | export GIT_TEST_PROTOCOL_VERSION && |
113 | trace_fetch client origin to_fetch | |
114 | ) && | |
42cc7485 JT |
115 | have_sent c5 c4^ c2side && |
116 | have_not_sent c4 c4^^ c4^^^ | |
117 | ' | |
118 | ||
119 | test_expect_success 'handle clock skew' ' | |
120 | rm -rf server client trace && | |
121 | git init server && | |
122 | test_commit -C server to_fetch && | |
123 | ||
124 | git init client && | |
125 | ||
126 | # 2 regular commits | |
127 | test_tick=2000000000 && | |
128 | test_commit -C client c1 && | |
129 | test_commit -C client c2 && | |
130 | ||
131 | # 4 old commits | |
132 | test_tick=1000000000 && | |
133 | git -C client checkout c1 && | |
134 | test_commit -C client old1 && | |
135 | test_commit -C client old2 && | |
136 | test_commit -C client old3 && | |
137 | test_commit -C client old4 && | |
138 | ||
139 | # "c2" and "c1" are popped first, then "old4" to "old1". "old1" would | |
140 | # normally be skipped, but is treated as a commit without a parent here | |
141 | # and sent, because (due to clock skew) its only parent has already been | |
142 | # popped off the priority queue. | |
143 | test_config -C client fetch.negotiationalgorithm skipping && | |
b6e7fc4f | 144 | trace_fetch client "$(pwd)/server" && |
42cc7485 JT |
145 | have_sent c2 c1 old4 old2 old1 && |
146 | have_not_sent old3 | |
147 | ' | |
148 | ||
149 | test_expect_success 'do not send "have" with ancestors of commits that server ACKed' ' | |
150 | rm -rf server client trace && | |
151 | git init server && | |
152 | test_commit -C server to_fetch && | |
153 | ||
154 | git init client && | |
b2fa7a23 | 155 | for i in $(test_seq 8) |
42cc7485 JT |
156 | do |
157 | git -C client checkout --orphan b$i && | |
158 | test_commit -C client b$i.c0 | |
159 | done && | |
b2fa7a23 | 160 | for j in $(test_seq 19) |
42cc7485 | 161 | do |
b2fa7a23 | 162 | for i in $(test_seq 8) |
42cc7485 JT |
163 | do |
164 | git -C client checkout b$i && | |
165 | test_commit -C client b$i.c$j | |
166 | done | |
167 | done && | |
168 | ||
169 | # Copy this branch over to the server and add a commit on it so that it | |
170 | # is reachable but not advertised. | |
171 | git -C server fetch --no-tags "$(pwd)/client" b1:refs/heads/b1 && | |
172 | git -C server checkout b1 && | |
173 | test_commit -C server commit-on-b1 && | |
174 | ||
175 | test_config -C client fetch.negotiationalgorithm skipping && | |
d6509da6 JN |
176 | |
177 | # NEEDSWORK: The number of "have"s sent depends on whether the transport | |
178 | # is stateful. If the overspecification of the result were reduced, this | |
179 | # test could be used for both stateful and stateless transports. | |
180 | ( | |
181 | # Force protocol v0, in which local transport is stateful (in | |
182 | # protocol v2 it is stateless). | |
183 | GIT_TEST_PROTOCOL_VERSION=0 && | |
184 | export GIT_TEST_PROTOCOL_VERSION && | |
185 | trace_fetch client "$(pwd)/server" to_fetch | |
186 | ) && | |
42cc7485 JT |
187 | grep " fetch" trace && |
188 | ||
189 | # fetch-pack sends 2 requests each containing 16 "have" lines before | |
190 | # processing the first response. In these 2 requests, 4 commits from | |
191 | # each branch are sent. Just check the first branch. | |
192 | have_sent b1.c19 b1.c17 b1.c14 b1.c9 && | |
193 | have_not_sent b1.c18 b1.c16 b1.c15 b1.c13 b1.c12 b1.c11 b1.c10 && | |
194 | ||
195 | # While fetch-pack is processing the first response, it should read that | |
196 | # the server ACKs b1.c19 and b1.c17. | |
197 | grep "fetch< ACK $(git -C client rev-parse b1.c19) common" trace && | |
198 | grep "fetch< ACK $(git -C client rev-parse b1.c17) common" trace && | |
199 | ||
200 | # fetch-pack should thus not send any more commits in the b1 branch, but | |
201 | # should still send the others (in this test, just check b2). | |
b2fa7a23 | 202 | for i in $(test_seq 0 8) |
42cc7485 JT |
203 | do |
204 | have_not_sent b1.c$i | |
205 | done && | |
206 | have_sent b2.c1 b2.c0 | |
207 | ' | |
208 | ||
209 | test_done |