1 | #!/bin/bash
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2 |
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3 | # This script is called each time a nightly GS file (binary or otherwise) gets uploaded to puka
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4 | # to the caveat-emptor folder. This script is called from
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5 | # nzdl@puka:[522]~/.ssh$ less authorized_keys
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6 |
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7 |
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8 | ######### GLOBAL VARS #########
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9 |
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10 | # http://stackoverflow.com/questions/1401482/yyyy-mm-dd-format-date-in-shell-script
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11 | # we want . as separator to produce: yyyy.mm.dd
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12 |
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13 | today=`date +%Y.%m.%d`
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14 |
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15 | # http://askubuntu.com/questions/367136/how-do-i-read-a-variable-from-a-file
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16 |
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17 | gs2version=`cat /greenstone/greenstone.org/base/next-release.txt`
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18 | gs3version=`cat /greenstone/greenstone.org/base/next-release-greenstone3.txt`
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19 |
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20 | # static array of string literals representing the caveat file suffixes we're interested in
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21 |
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22 | suffixes=("linux" "linux-x64" "Lion-MacOS-intel.dmg" "MacOS-intel.dmg" "windows.exe" "source-component.tar.gz" "source-component.zip" "source-distribution.tar.gz" "source-distribution.zip")
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23 |
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24 | gs2_bin_prefix=Greenstone-$gs2version-candidate-$today-
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25 | gs3_bin_prefix=Greenstone-$gs3version-candidate-$today-
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26 |
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27 | #echo "Date is $today"
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28 | #echo "gs2ver is $gs2version"
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29 | #echo "gs3ver is $gs3version"
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30 | #echo "gs2_bin_prefix is $gs2_bin_prefix"
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31 | #echo "gs3_bin_prefix is $gs3_bin_prefix"
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32 |
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33 | caveat_dir=/greenstone/greenstone.org/base/caveat-emptor/
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34 | snapshots_dir=/greenstone/greenstone.org/base/release-snapshots/
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35 | latest_dir=${caveat_dir}latest/
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36 |
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37 | ###############################
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38 |
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39 | # Function that checks whether all of today's binaries for a gs_version (GS2 or GS3) are
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40 | # present in the caveat folder
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41 | # If so, it copies those bins over into the release-snapshots folder under new names
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42 |
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43 | # Non-ambiguous string concatenation: ${varname}string-literal
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44 | # stackoverflow.com/questions/4181703/how-can-i-concatenate-string-variables-in-bash
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45 |
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46 | function snapshots_for_gs_version () {
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47 |
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48 | # Local vs global variables in functions
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49 | # http://www.tldp.org/LDP/abs/html/localvar.html
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50 |
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51 | local gs_version=$1
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52 |
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53 | #check if we've found all gs_version nightly binaries
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54 | local foundallbins=true
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55 |
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56 | for suffix in ${suffixes[@]}; do
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57 | local file=$caveat_dir
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58 | if [ "$gs_version" == "2" ]; then
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59 | file=$file$gs2_bin_prefix$suffix
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60 | else
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61 | file=$file$gs3_bin_prefix$suffix
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62 | fi
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63 |
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64 | if [ ! -f $file ]; then
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65 | echo "File does not exist: $file"
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66 | foundallbins=false
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67 | #else
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68 | #echo "File exists: $file"
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69 | fi
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70 | done
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71 |
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72 | echo ""
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73 |
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74 | if [ "$foundallbins" == "true" ]; then
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75 | echo "All gs$gs_version binaries for $today generated"
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76 | echo ""
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77 |
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78 | # delete the old stables
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79 | echo "Deleting ${snapshots_dir}Greenstone-${gs_version}s*"
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80 | rm ${snapshots_dir}Greenstone-${gs_version}s*
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81 | echo ""
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82 |
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83 | # copy the gs2 binaries to release-snapshots folder
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84 | # under the new name Greenstone-${gs_version}sDATE-suffix, where gs_version = 2|3
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85 | # Use hardlinking instead of copy to save space
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86 |
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87 | for suffix in ${suffixes[@]}; do
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88 | local file=$caveat_dir
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89 | if [ "$gs_version" == "2" ]; then
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90 | file=$file$gs2_bin_prefix$suffix
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91 | else
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92 | file=$file$gs3_bin_prefix$suffix
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93 | fi
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94 | local newfile=${snapshots_dir}Greenstone-${gs_version}s${today}-$suffix
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95 |
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96 | # http://askubuntu.com/questions/108771/what-is-the-difference-between-a-hard-link-and-a-symbolic-link
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97 | # Q & A: The difference between hard and soft links at http://linuxgazette.tuwien.ac.at/105/pitcher.html
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98 | echo "Hardlinking file $file as $newfile"
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99 | ln $file $newfile
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100 |
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101 | done
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102 |
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103 | else
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104 | echo "Not all gs${gs_version} binaries for $today have been generated. (foundallbins: $foundallbins)"
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105 | fi
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106 |
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107 | echo ""
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108 |
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109 |
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110 | # cdrom components only for GS2
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111 |
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112 | if [ "$gs_version" == "2" ]; then
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113 |
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114 | echo "GS2 CD ROM components"
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115 | echo ""
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116 |
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117 | cd_suffixes=("linux" "linux-x64" "Lion-mac" "mac" "full-windows" "windows")
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118 | cdfile_src=cdrom-components-${gs2version}-candidate-${today}-
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119 |
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120 | local foundallcds=true
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121 |
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122 | for suffix in ${cd_suffixes[@]}; do
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123 |
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124 | local file=${caveat_dir}$cdfile_src${suffix}.tar.gz
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125 |
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126 | if [ ! -f $file ]; then
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127 | foundallcds=false
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128 | echo "Could not find cdrom component $file"
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129 | fi
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130 | done
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131 |
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132 | # if all cdrom components present, then copy across under new names
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133 | if [ "$foundallcds" == "true" ]; then
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134 |
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135 | # delete the old cdrom components from release-snapshots
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136 | echo "Deleting ${snapshots_dir}cdrom-components-2s*"
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137 | rm ${snapshots_dir}cdrom-components-2s*
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138 | echo ""
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139 |
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140 | # copy across the new cdrom components
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141 | # use hardlinking instead of copying to save space
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142 |
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143 | for suffix in ${cd_suffixes[@]}; do
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144 |
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145 | local srcfile=${caveat_dir}$cdfile_src${suffix}.tar.gz
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146 | local destfile=${snapshots_dir}cdrom-components-2s${today}-${suffix}.tar.gz
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147 | echo "Hardlinking $srcfile as $destfile"
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148 | ln $srcfile $destfile
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149 | done
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150 | fi
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151 |
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152 | echo ""
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153 | fi
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154 |
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155 |
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156 | }
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157 |
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158 | # Inspect the most recently added file in the caveat folder and iff it's a GS binary or src file,
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159 | # create a hardlink for it under the appropriate name in the 'latest' subfolder
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160 | # and delete the earlier variant of the same in 'latest'.
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161 | # In time may have to start including the GS documented examples archive files generated overnight.
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162 | #
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163 | # General: http://stackoverflow.com/questions/3601515/how-to-check-if-a-variable-is-set-in-bash
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164 |
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165 | function make_latest () {
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166 |
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167 | echo ""
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168 | #echo "In MAKE_LATEST"
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169 |
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170 | # Using local variable to loop through files, seen in http://mywiki.wooledge.org/ParsingLs
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171 | local latest
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172 | local file
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173 | local suffix
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174 |
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175 | # find the latest file in caveat, since this script is called upon each upload to puka's caveat
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176 | # http://stackoverflow.com/questions/5885934/bash-function-to-find-newest-file-matching-pattern
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177 | # http://mywiki.wooledge.org/BashFAQ/003
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178 | # http://tldp.org/LDP/abs/html/fto.html, where f1 -nt f2 means file f1 is newer than file f2
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179 | # http://superuser.com/questions/687523/get-the-last-file-name-in-a-variable-in-bash
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180 |
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181 | unset -v latest
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182 | #for file in "${caveat_dir}"*; do
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183 | #then file would be the full path. Instead, cd into the caveat dir to just get the filename
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184 | cd $caveat_dir
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185 | for file in *; do
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186 | [[ -f $file ]] && [[ "$file" != *"latest-server.exe" ]] && [[ "$file" != *"Greenstone3-latest-source.tar.gz" ]] && [[ $file -nt $latest ]] && latest=$file
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187 | done
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188 | cd -
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189 |
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190 | # latest will not be undef, because this script is only ever called upon a legitimate
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191 | # file upload into puka's caveat-emptor location
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192 | # E.g. for testing, latest=Greenstone-3.07-candidate-2015.06.30-linux-x64
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193 | echo "Latest file in caveat is: $latest"
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194 |
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195 | # Iff this is a GS binary/src file that we want to maintain in the caveat/latest folder,
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196 | # then remove the older version of the same file from caveat/latest folder, if any,
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197 | # and hardlink the latest file into caveat/latest
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198 |
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199 | # Check whether the latest file ends with the binary/src suffix
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200 | # https://viewsby.wordpress.com/2013/09/06/bash-string-ends-with/
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201 | # single or double square brackets for testing conditions, [] vs [[]]
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202 | # http://stackoverflow.com/questions/669452/is-preferable-over-in-bash-scripts
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203 | # Need double brackets below, [[]], for string expansion with wildcard
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204 |
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205 | for suffix in ${suffixes[@]}; do
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206 | if [[ "$latest" == *"$suffix" ]]; then
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207 | echo "Found that suffix matched: $suffix"
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208 |
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209 | # splits the filename $latest by hyphens, -, and then gets the 2nd substring
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210 | # in this case the GS2 or GS3 full version number
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211 | # http://stackoverflow.com/questions/428109/extract-substring-in-bash
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212 | local matchfile=`echo $latest| cut -d'-' -f 2`
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213 | echo "Found gs version prefix: $matchfile"
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214 |
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215 | matchfile=${latest_dir}Greenstone-${matchfile}-candidate-*-${suffix}
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216 |
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217 | # remove the matching file from the caveat/latest folder
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218 | # we don't know it's date, so we substituted that portion with a * as wildcard
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219 | # E.g. matchfile=<caveat>/latest/Greenstone-2.87-candidate-*-source-component.tar.gz
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220 |
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221 | echo "Removing $matchfile"
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222 | rm $matchfile
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223 |
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224 | # make a hardlink of the $latest file into the caveat_latest folder
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225 | echo "Making a hardlink to ${caveat_dir}$latest in ${latest_dir}$latest"
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226 | ln ${caveat_dir}$latest ${latest_dir}$latest
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227 | #else
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228 | #echo "$latest did not match $suffix"
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229 | fi
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230 | done
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231 |
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232 | echo ""
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233 | }
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234 |
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235 | ####################
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236 |
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237 | # the 'main'
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238 |
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239 | # This script is called upon each upload to puka's caveat-emptor by
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240 | # the file nzdl@puka:[522]~/.ssh/authorized_keys
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241 |
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242 | # Check if conditions are true to create snapshots out of today's GS2 bins, these conditions
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243 | # being that all src and bins of GS2 have been generated for today.
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244 | # And if so, hardlink these src and bin files into the release-snapshots dir.
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245 | # Repeat for GS3.
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246 | # Finally, for each uploaded file that is a Greenstone src or binary file in caveat
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247 | # hardlink it into the caveat/latest folder to keep a copy of the most-recent version of that
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248 | # bin/file that was successfully generated.
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249 |
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250 | snapshots_for_gs_version "2"
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251 | snapshots_for_gs_version "3"
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252 | make_latest |
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