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annotate workers/bin/findPDFs.sh @ 12:be1034183e03

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scan WAT files for application/pdf responses
author Henry S. Thompson <ht@markup.co.uk>
date Wed, 10 Oct 2018 11:28:21 +0000
parents
children bba589cab837
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12
be1034183e03 scan WAT files for application/pdf responses
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1 #!/bin/bash
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2 # Test script to split CC WAT files across threads
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3 # to count find application/pdf responses:
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4 # Usage: [echo file file_id] | findPDFs id home [-t] numWorkerProcesses
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5 # If -t, no random wait, just id seconds
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6 # remove >>errs once tested
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7 #set -e -o pipefail
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8 echo $$ > test1.pid
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9 proc=$1
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10 res=res
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11 home=$2
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12 shift 2
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13 if [ "$1" = "-t" ]
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14 then
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15 shift
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16 pause=$proc
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17 else
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18 pause=$(lrand 60)
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19 fi
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20 wp=$1
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21 touch .running
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22 function lrand {
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23 # cheap bad little random number generator
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24 echo $(( 1 + ($(openssl rand 1 | od -d | head -1 | tr -s ' ' | cut -f 2 -d ' ') % $1)))
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25 }
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26 function tryRead {
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27 m=0
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28 set -o pipefail
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29 until if [ $((m+=1)) -gt 5 ]; then echo "tried to read $1 5 times w/o success, giving up" 1>&2; return 1; fi && \
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30 curl -s --insecure -o - "$1"| zcat | fgrep msgtype=response | \
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31 { egrep -i '"WARC-Target-URI":"https?:' || : ;} > $2
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32 do
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33 # try to avoid lockstep retries
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34 echo ${PIPESTATUS[@]} 1>&2
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35 sleep $(lrand 10)
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36 echo $(date) $2 retry number $m 1>&2
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37 done
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38 set +o pipefail
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39 }
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40 trap "{
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41 #set -e -o pipefail
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42 cd $res
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43 ln -s ../nohup.cc .
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44 tar -czhf - * | \
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45 ssh -o StrictHostKeyChecking=no -q $home \"{ cd data
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46 mkdir -p pdf/wat
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47 cd pdf/wat
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48 tar -xzf - ; } 2>>errs\"
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49 cd
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50 rm -rf $res
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51 ( sleep 5 ; rm nohup.cc ) &
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52 }" EXIT
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53 mkdir -p $res
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54 log=$res/log
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55 # Don't all start at once
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56 sleep $pause
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57 echo \# $(date) > $log
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58 pRes=0
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59 while read s id
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60 do
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61 url="https://commoncrawl.s3.amazonaws.com/$s"
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62 ccm=${s##*/wat/}
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63 cci=${ccm%%-ip*}
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64 export ID=$id
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65 echo \# $(date) "running |$proc|$home|$pause|$wp|$id|" >> $log
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66 # Experimental retry loop
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67 tryRead "$url" crawl$id
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68 if [ -s crawl$id ]
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69 then
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70 echo \# $(date) $id $(wc -l crawl$id) >> $log
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71 parallel --round-robin --pipe -j $wp "_findPDFs.sh {#} >> $res/$cci 2>>$res/errs{#}" < crawl$id || echo "ppfailed $? ${PIPESTATUS[@]}" 1>&2
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72 else
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73 echo "crawl$id empty" 1>&2
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74 fi
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75 rm crawl$id
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76 done < ifile.txt 2>> $res/errs || pRes=$?
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77 echo \# $(date) main loop exit code=$pRes >> $log
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78 rm .running
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79