Send patches - preferably formatted by git format-patch - to patches at archlinux32 dot org.
summaryrefslogtreecommitdiff
path: root/bin/get-assignment
blob: 250a4f9e07fa03b848e8d367392ec46eee7ca7e1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
#!/bin/bash

# receive one package to be built from the build-list whose dependencies
# are already satisfied or which breaks a dependency cycle

# exit code shows state of success:
#  0: ok, I gave you an assignment
#  1: come back (shortly) later - I was running already
#  2: come back later - there are still packages to be built,
#     but currently none has all its dependencies ready
#  3: come back after the next run of get-package-updates - currently
#     there are no pending packages
#  4: come back, when you've done your work - you hit the limit on
#     maximum allowed parallel jobs per ip

# TODO:
#  respect build-manually-list ("blocked")
#  possibly hand out "broken" packages to different build slave

. "${0%/*}/../conf/default.conf"

mkdir -p "${work_dir}/package-states"

hand_out_assignment() {

  # locked, broken and blocked packages won't be handed out
  if package_locked_broken_or_blocked "$1" "$2" "$3" "$4"; then
    return 0
  fi

  # we don't care anymore if an older version of this package was
  # "locked" or "broken" (we keep only marker for older "done" packages)
  ls "${work_dir}/package-states" | \
    grep "^${1//./\\.}\(\.[^.]\+\)\{3\}\.\(locked\|broken\)\$" | \
    sed "s|^|${work_dir}/package-states/|" | \
    xargs -rn1 rm -f

  echo "$1 $2 $3 $4"
  echo "${slave}" > "${work_dir}/package-states/$1.$2.$3.$4.locked"

  # lock every loop this package breaks
  grep "^${1//./\\.}\$" "${work_dir}/build-list.loops/"loop_* | \
    cut -d: -f1 | \
    tee -a "${work_dir}/package-states/$1.$2.$3.$4.locked" | \
    sed 's|$|.locked|' | \
    xargs -rn1 touch

  exit 0

}

# Create a lock file and a trap.

exec 9> "${build_list_lock_file}"
if ! flock -n 9; then
  >&2 echo 'come back (shortly) later - I cannot lock build list.'
  exit 1
fi

function clean_up {
  rm -f "${build_list_lock_file}"
}

trap clean_up EXIT

# Check if there are any pending packages at all and if the requester
# has already hit its max_parallel_build_per_client limit.

num_jobs=0
pending_packages=false

while read -r package git_revision mod_git_revision repository; do

  if [ -f "${work_dir}/package-states/${package}.${git_revision}.${mod_git_revision}.${repository}.broken" ] ||
    [ -f "${work_dir}/package-states/${package}.${git_revision}.${mod_git_revision}.${repository}.blocked" ]; then
    continue
  fi

  if [ -f "${work_dir}/package-states/${package}.${git_revision}.${mod_git_revision}.${repository}.locked" ];
  then
    if [ "${slave}" = "$(head -n1 "${work_dir}/package-states/${package}.${git_revision}.${mod_git_revision}.${repository}.locked")" ]; then
      num_jobs=$[${num_jobs}+1];
    fi
  else
    pending_packages=true
  fi

done < "${work_dir}/build-list"

if ! ${pending_packages}; then
  >&2 echo 'come back after the next run of get-package-updates - currently there are no pending packages'
  exit 3
fi

if [ ${num_jobs} -ge ${max_parallel_build_per_client} ]; then
  >&2 echo "come back, when you've done your work - you hit the limit on maximum allowed parallel jobs per ip"
  exit 4
fi

# Find first package of build-list whose dependencies are all met

while read -r package git_revision mod_git_revision repository; do

  if package_locked_broken_or_blocked "${package}" "${git_revision}" "${mod_git_revision}" "${repository}"; then
    continue
  fi

  [ -z "$(
    (
      cat "${work_dir}/package-infos/${package}.${git_revision}.${mod_git_revision}.needs"
      awk '{print $1 "." $2 "." $3}' "${work_dir}/build-list" | \
        sed "
          s|^|${work_dir}/package-infos/|
          s|\$|\.builds|
        " | \
        xargs -r cat | \
        sort -u
    ) | \
      sort | \
      uniq -d
    )" ] || continue

  hand_out_assignment "${package}" "${git_revision}" "${mod_git_revision}" "${repository}"

done < "${work_dir}/build-list"

# Find package (of all packages which are not locked)
# which breaks the most unlocked loops

locked_packages="$(
  ls "${work_dir}/package-states/" | \
    grep '\(\.[0-9a-f]\{40\}\)\{2\}\.[^\.\]\+\.locked$' | \
    sed 's|\(\.[0-9a-f]\{40\}\)\{2\}\.[^\.\]\+\.locked$||'
)"

for package in $(
  ls "${work_dir}/build-list.loops/" | \
    grep '^loop_[0-9]\+$' | \
    while read -r loop; do
      if [ -z "$(
        (
          cat "${work_dir}/build-list.loops/${loop}"
          echo "${locked_packages}"
        ) | \
          sort | \
          uniq -d
        )" ]; then
        cat "${work_dir}/build-list.loops/${loop}"
      fi
    done | \
    sort | \
    uniq -c | \
    sort -k1nr,1 | \
    awk '{print $2}'
); do
  if assignment="$(grep "^${package//./\\.} " "${work_dir}/build-list")"; then
    hand_out_assignment ${assignment}
  fi
done

# Remove the lock file

>&2 echo 'come back later - there are still packages to be built, but currently none has all its dependencies ready'
exit 2