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loadDiff.m
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loadDiff.m
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LoadDiff ; Load planet diff file with fully indexed tags
; Copyright (C) 2008 Etienne Cherdlu <[email protected]>
;
; This program is free software: you can redistribute it and/or modify
; it under the terms of the GNU Affero General Public License as
; published by the Free Software Foundation, either version 3 of the
; License, or (at your option) any later version.
;
; This program is distributed in the hope that it will be useful,
; but WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
; GNU Affero General Public License for more details.
;
; You should have received a copy of the GNU Affero General Public License
; along with this program. If not, see <http://www.gnu.org/licenses/>.
run ; Public ; Run loadDiff
;
l +^loadDiff("running"):0 e q
k ^loadDiff("stop")
f i '$$file() q:$g(^loadDiff("stop"))=1 h 30
l -^loadDiff("running")
q
stop ; Public ; Stop loadDiff
s ^loadDiff("stop")=1
q
file() ; Public ; Get the next file and process it
;
n dateTime,hDateTime1,hDateTime2,dateTime1,dateTime2,filegz,file
n sFile
;
s lastFile=^loadDiff("lastFile")
;
; Increment file name
s nextFile=lastFile
s nextFile=$e(1000000000+lastFile+1,2,10)
s file=$e(nextFile,7,9)_".osc"
s filegz=file_".gz"
s state=$e(nextFile,7,9)_".state.txt"
zsystem "rm -f "_filegz
zsystem "rm -f "_file
zsystem "rm -f "_state
;
s stateUrl=^loadDiff("url")_$e(nextFile,1,3)_"/"_$e(nextFile,4,6)_"/"_$e(nextFile,7,9)_".state.txt"
zsystem "wget "_stateUrl
o state:(READ:EXCEPTION="g fail"):0 e q 0 ; File does not exist yet
u state r header,sequenceNumber,txnMaxQueried,timestamp
c state
;
s timestamp=$tr($p(timestamp,"=",2),"\","")
;
s fileUrl=^loadDiff("url")_$e(nextFile,1,3)_"/"_$e(nextFile,4,6)_"/"_$e(nextFile,7,9)_".osc.gz"
zsystem "wget "_fileUrl
;
zsystem "gunzip "_filegz
;
; ====== TRANSACTION START =================================================================================
; tstart *
; i $trestart u 0 w !,"restart",!
c file ; If this is a restart then the file may already have been opened, so close it to be sure.
d oneFile(file,.sFile)
;
; Only update dateTime after the file has been loaded successfully
s ^loadDiff("timestamp")=timestamp
s ^osmPlanet("date")=$tr($e(timestamp,1,10),"-","")
s ^loadDiff("lastFile")=nextFile
;
; tcommit
; ====== TRANSACTION END ===================================================================================
;
; Tidy up
zsystem "rm "_file
zsystem "rm "_state
;
; Someone wants us to stop
i $g(^loadDiff("stop"))=1 q 0
;
q 1
fail ; Error handler if file does not exist
q 0
setup ; Public ; Setup loadDiff
;
n url,startDate,in
;
s url=$g(^loadDiff("url")) i url="" s url="http://ftp.heanet.ie/mirrors/openstreetmap.org/minute/"
s startDate=$g(^loadDiff("dateTime"))
;
setup10 ;
w !,"URL? <",url,"> " r in i in="" s in=url w in
i in="" w " Eh?" g setup10
s url=in
;
setup20 ;
w !,"Start date/time ccyymmddhhmm? "
i startDate'="" w "<",startDate,"> "
r in i in="" s in=startDate w in
i in'?12n w " Eh?" g setup20
s startDate=in
;
s ^loadDiff("url")=url
s ^loadDiff("dateTime")=startDate
q
; Strategy:
; 1) Import everything into the changeset.
; 2) Process all the relations in the changeset (don't delete a relation if it is in use by some relation that is not in the changeset)
; 3) Process all ways. Do not delete ways if they are in use by relations that are not in this changeset)
; 4) Process all nodes. Do not delete nodes if they are in use by any ways (unless deleted in this changeset)
oneFile(filename,sFile) ; Public ; Load data from filename
;
n q,ccyymmdd
n line
n gNodeDeleteCount,gWayDeleteCount,gNodeModifyCount,gWayModifyCount,gRelDeleteCount,gRelModifyCount,fileId
;
s q=""""
s gNodeDeleteCount=0
s gWayDeleteCount=0
s gRelDeleteCount=0
s gNodeModifyCount=0
s gWayModifyCount=0
s gRelModifyCount=0
;
s fileId=filename
k ^loadDiff(fileId)
s ^loadDiff(fileId,"start")=$h
s ^loadDiff(fileId,"pid")=$j
k ^temp($j,"loadDiff")
;
;
; Read the file
d openFile^stream(.sFile,filename)
s line=$$read^stream(.sFile) ; prolog
s line=$$read^stream(.sFile) ; <osm...>
;
f d i line["</osmChange>" q
. s line=$$read^stream(.sFile)
. i sFile("recordCount")#10000=0 d checkpoint
. i line["<delete" d delete q
. i line["<modify" d modify q
. i line["<create" d modify q
;
; Apply the changes to the active dataset (assumes all changes in a single diff file are referentially integral)
; Apply relations first, then ways and then nodes. In the case of a way deletion it's nodes cannot be deleted
; until the way has been deleted. Also OSM may try to delete elements that are still in use in fosm. In either case
; the referential integrity checks will prevent the node from being deleted.
; Why apply backwards? Nodes first surely?
; d apply^relation(fileId)
; d apply^way(fileId)
d applyNodes
d applyWays
;
s ^loadDiff(fileId,"end")=$h
s ^loadDiff(fileId,"totalLines")=sFile("recordCount")
s ^loadDiff(fileId,"totalNodesDelete")=gNodeDeleteCount
s ^loadDiff(fileId,"totalWaysDeleted")=gWayDeleteCount
s ^loadDiff(fileId,"totalRelationsDeleted")=gRelDeleteCount
s ^loadDiff(fileId,"totalNodesModified")=gNodeModifyCount
s ^loadDiff(fileId,"totalWaysModified")=gWayModifyCount
s ^loadDiff(fileId,"totalRelationsModified")=gRelModifyCount
s ^loadDiff(fileId,"duration")=$p(^loadDiff(fileId,"end"),",",2)-$p(^loadDiff(fileId,"start"),",",2)
;
d close^stream(.sFile)
q
applyNodes ; Apply node changes in this file to the active database
;
n nodeId,a,version,changeset,uid,visible
n fork
n currentVersion,currentChangeset,currentA,currentUid,blockedByUid
;
s nodeId=""
f d i nodeId="" q
. s nodeId=$o(^temp($j,"loadDiff","n",nodeId)) i nodeId="" q
. s a=^temp($j,"loadDiff","n",nodeId,"a")
. s version=$p(a,$c(1),1)
. s changeset=$p(a,$c(1),2)
. s uid=$p(a,$c(1),4)
. s visible=$p(a,$c(1),5)
. s currentVersion=$$currentVersion^node(nodeId)
. ;
. ; Is the user blocked
. i uid'="",$g(^user(uid,"osmImport"))="block" d q
. . s blockedByUid=$g(^user(uid,"blockedByUid"),uid)
. . d log^conflict("node",nodeId,blockedByUid,a,"User #"_uid_" ("_$g(^user(uid,"name"),"unknown")_") blocked by "_blockedByUid) q
. ;
. ; Don't load older versions
. i currentVersion>version q
. ;
. s quit=0
. i currentVersion'="" d i quit q ; In a test database many nodes will be missing
. . s currentChangesetId=^nodeVersion(nodeId,"v",currentVersion)
. . s currentA=$g(^c(currentChangesetId,"n",nodeId,"v",currentVersion,"a")) i currentA="" q
. . s currentUid=$p(currentA,$c(1),4)
. . s fork=$p(currentA,$c(1),6)
. . ;
. . ; Has the element been forked
. . ; Log conflict against user who edited in fosm
. . i fork d s quit=1 q
. . . d log^conflict("node",nodeId,currentUid,a,"Edited in fosm")
. . ;
. . ; If the node is to be deleted, but the last editor has requested deletions to be preserved (eg because they are a ct_decliner)
. . ; then do not apply the change.
. . i visible="false",currentUid'="",$g(^user(currentUid,"osmImport"))="doNotDelete" d s quit=1 q
. . . s blockedByUid=$g(^user(currentUid,"blockedByUid"),currentUid)
. . . d log^conflict("node",nodeId,blockedByUid,a,"Deletion of element belonging to #"_currentUid_" ("_$g(^user(currentUid,"name"),"unknown")_") preserved. Do not delete requested by user #"_blockedByUid)
. ;
. ; If the node is to be deleted, but is still in-use then don't delete it. Instead add it to the conflict file
. ; for manual inspection
. i visible="false",$d(^wayByNode(nodeId)) d log^conflict("node",nodeId,uid,a,"Deleted in OSM but still in use in fosm") q
. ;
. d addNodeFromChangeset^node(changeset,nodeId,version)
q
applyWays ; Apply way changes in this file to the active database
;
n nodeId,a,version,changeset,uid,visible
n fork
n currentVersion,currentChangeset,currentA,currentUid,blockedByUid
;
s wayId=""
f d i wayId="" q
. s wayId=$o(^temp($j,"loadDiff","w",wayId)) i wayId="" q
. s a=^temp($j,"loadDiff","w",wayId,"a")
. s version=$p(a,$c(1),1)
. s changeset=$p(a,$c(1),2)
. s uid=$p(a,$c(1),4)
. s visible=$p(a,$c(1),5)
. s currentVersion=$$currentVersion^way(wayId)
. ;
. ; Is the user blocked
. i uid'="",$g(^user(uid,"osmImport"))="block" d q
. . s blockedByUid=$g(^user(uid,"blockedByUid"),uid)
. . d log^conflict("way",wayId,blockedByUid,a,"User #"_uid_" ("_$g(^user(uid,"name"),"unknown")_") blocked by "_blockedByUid) q
. ;
. ; Don't load older versions
. i currentVersion>version q
. ;
. s quit=0
. i currentVersion'="" d i quit q ; In a test database many ways will be missing
. . s currentChangesetId=$g(^wayVersion(wayId,"v",currentVersion))
. . i currentChangesetId="" s currentChangesetId=^waytag(wayId,"@changeset")
. . s currentUid=$g(^c(currentChangesetId,"w",wayId,"v",currentVersion,"t","@uid"))
. . s fork=$g(^c(currentChangesetId,"w",wayId,"v",currentVersion,"t","@fork"))
. . ;
. . ; Has the element been forked
. . ; Log conflict against user who edited in fosm
. . i fork d s quit=1 q
. . . d log^conflict("way",wayId,currentUid,a,"Edited in fosm")
. . ;
. . ; If the way is to be deleted, but the last editor has requested deletions to be preserved (eg because they are a ct_decliner)
. . ; then do not apply the change.
. . i visible="false",currentUid'="",$g(^user(currentUid,"osmImport"))="doNotDelete" d s quit=1 q
. . . s blockedByUid=$g(^user(currentUid,"blockedByUid"),currentUid)
. . . d log^conflict("way",wayId,blockedByUid,a,"Deletion of element belonging to #"_currentUid_" ("_$g(^user(currentUid,"name"),"unknown")_") preserved. Do not delete requested by user #"_blockedByUid)
. ;
. d addWayFromChangeset^way(changeset,wayId,version)
q
delete ; Delete some stuff, read all lines until end of delete element
f d i line["</delete>" q
. s line=$$read^stream(.sFile)
. i sFile("recordCount")#10000=0 d checkpoint
. i line["<node" s gNodeDeleteCount=gNodeDeleteCount+1 d import^node(.sFile,1) q
. i line["<way" s gWayDeleteCount=gWayDeleteCount+1 d import^way(.sFile,1) q
. i line["<relation" s gRelDeleteCount=gRelDeleteCount+1 d add^relation(.sFile,1) q
;
q
modify ; Create or modify stuff, read all lines until end of modify or create element
f d i (line["</modify>")!(line["</create>") q
. s line=$$read^stream(.sFile)
. i sFile("recordCount")#10000=0 d checkpoint
. i line["<node" s gNodeModifyCount=gNodeModifyCount+1 d import^node(.sFile,0) q
. i line["<way" s gWayModifyCount=gWayModifyCount+1 d import^way(.sFile,0) q
. i line["<relation" s gRelModifyCount=gRelModifyCount+1 d add^relation(.sFile,0) q
;
q
checkpoint ; Private ; Update checkpoint
;
s ^loadDiff(fileId,"currentLineCount")=sFile("recordCount")
s ^loadDiff(fileId,"currentNodeDeleteCount")=gNodeDeleteCount
s ^loadDiff(fileId,"currentWayDeleteCount")=gWayDeleteCount
s ^loadDiff(fileId,"currentRelDeleteCount")=gRelDeleteCount
s ^loadDiff(fileId,"currentNodeModifyCount")=gNodeModifyCount
s ^loadDiff(fileId,"currentWayModifyCount")=gWayModifyCount
s ^loadDiff(fileId,"currentRelModifyCount")=gRelModifyCount
q