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# 27oct23 Software Lab. Alexander Burger
(private) (Prg C Q X Y Cls Name)
(de admin Prg
(out 2
(prinl *Pid " + Admin " (stamp))
(tell 'bye)
(for (F . @) (or *Dbs (2))
(when (dbck F)
(quit "DB Check" (cons F @)) ) )
(run Prg)
(when (load "@lib/dbgc.l")
(prinl "dbgc " @) )
(prinl *Pid " - Admin " (stamp)) ) )
### Local Backup ###
(de snapshot (Dst . @)
(when (info (pack Dst "/1"))
(for (L (flip (sort (extract format (dir Dst)))) L)
(let N (++ L)
(call "mv" (pack Dst '/ N) (pack Dst '/ (inc N)))
(when (> (car L) (*/ N 59 60))
(call "rm" "-rf" (pack Dst '/ (++ L))) ) ) ) )
(when (call "mkdir" (pack Dst "/1"))
(let Ign NIL
(while (args)
(let A (next)
(if (pre? "-" A)
(push 'Ign (pack (cdr (chop A))))
(let
(Lst (filter bool (split (chop A) '/))
Src (car Lst)
Old (pack Dst "/2/" Src)
New (pack Dst "/1/" Src) )
(recur (Lst Src Old New)
(ifn (cdr Lst)
(recur (Src Old New)
(unless (member Src Ign)
(cond
((=T (car (info Src T))) # Directory
(call "mkdir" "-p" New)
(for F (dir Src T)
(unless (member F '("." ".."))
(recurse
(pack Src '/ F)
(pack Old '/ F)
(pack New '/ F) ) ) )
(call "touch" "-r" Src New) )
((= (info Src T) (info Old T)) # Same
(%@ "link" 'I Old New) )
(T (call "cp" "-a" Src New)) ) ) ) # Changed or new
(call "mkdir" "-p" New)
(recurse
(cdr Lst)
(pack Src '/ (cadr Lst))
(pack Old '/ (cadr Lst))
(pack New '/ (cadr Lst)) )
(call "touch" "-r" Src New) ) ) ) ) ) ) ) ) )
(de purge (Dst N)
(for D (dir Dst)
(when (>= (format D) N)
(call "rm" "-rf" (pack Dst '/ D)) ) ) )
### DB Garbage Collection ###
(de dbgc ()
(load "@lib/dbgc.l") )
### DB Mapping ###
(private) (ObjFun TreeFun Hook Base)
(de dbMap (ObjFun TreeFun)
(default ObjFun quote TreeFun quote)
(finally (mark 0)
(_dbMap *DB)
(dbMapT *DB) ) )
(de _dbMap (Hook)
(unless (mark Hook T)
(ObjFun Hook)
(for X (getl Hook)
(when (pair X)
(if
(and
(ext? (car X))
(not (isa '+Entity (car X)))
(sym? (cdr X))
(find
'((X) (isa '+relation (car X)))
(getl (cdr X)) ) )
(let (Base (car X) Cls (cdr X))
(dbMapT Base)
(for X (getl Base)
(when
(and
(pair X)
(sym? (cdr X))
(pair (car X))
(num? (caar X))
(ext? (cdar X)) )
(TreeFun Base (car X) (cdr X) Cls Hook)
(iter (tree (cdr X) Cls Hook) _dbMap) ) )
(wipe Base) )
(dbMapV (car X)) ) ) )
(wipe Hook) ) )
(de dbMapT (Base)
(let X (val Base)
(when
(and
(pair X)
(num? (car X))
(ext? (cdr X)) )
(TreeFun Base X)
(iter Base dbMapV) ) ) )
(de dbMapV (X)
(while (pair X)
(dbMapV (++ X)) )
(and (ext? X) (_dbMap X)) )
(de refObj (Obj Flg)
(make
(recur (Obj)
(for (F . @) (or *Dbs (2))
(for (This (seq F) This (seq This))
(when
(or
(fish == (val This) NIL Obj)
(fish == (getl This) NIL Obj) )
(if (and Flg (: T))
(recurse This)
(link This) ) ) ) ) )
(for L *ExtDBs # ("path/" <cnt> <ofs>)
(let ((P N E) L Lck)
(for I N
(let (Fd (open (pack P (hax (dec I)))) (Cnt . Siz) (blk Fd 0))
(and (=1 I) (setq Lck Fd))
(for Blk (dec Cnt)
(let B (ext E (blk Fd Blk Siz Lck))
(when (fish == B NIL Obj)
(link (cons P (id I Blk))) ) ) )
(close Fd) ) ) ) ) ) )
### DB Check ###
(de dbCheck ()
(for (F . N) (or *Dbs (2)) # Low-level integrity check
(unless (pair (println F N (dbck F T)))
(quit 'dbck @) ) )
(dbSync)
(dbMap # Check tree structures
NIL
'((Base Root Var Cls Hook)
(println Base Root Var Cls Hook)
(unless (= (car Root) (chkTree (cdr Root)))
(quit "Tree size mismatch") )
(when Var
(scan (tree Var Cls Hook)
'((K V)
(or
(isa Cls V)
(isa '+Alt (meta V Var))
(quit "Bad Type" V) )
(unless (has> V Var (if (pair K) (car K) K))
(quit "Bad Value" K) ) )
NIL T T ) ) ) )
(and *Dbs (dbfCheck)) # Check DB file assignments
(and (dangling) (println 'dangling @)) # Show dangling index references
(and (badECnt) (println 'badECnt @)) # Show entity count mismatches
(rollback) )
# Check Index References
(de dangling ()
(make
(for (F . @) (or *Dbs (2))
(for (Obj (seq F) Obj (seq Obj))
(and
(isa '+Entity Obj)
(dangle Obj)
(link @) )
(wipe Obj) ) ) ) )
(de dangle (This)
(unless (: T)
(and
(make
(for X (getl This)
(let V (or (atom X) (++ X))
(unless (rel?> This X V)
(link X) ) ) ) )
(cons This @) ) ) )
# Entity Counts
(de badECnt ()
(let Cnt NIL
(for (F . @) (or *Dbs (2))
(for (This (seq F) This (seq This))
(and
(isa '+Entity This)
(not (: T))
(for Cls (type This)
(recur (Cls)
(or
(== '+Entity Cls)
(when (isa '+Entity Cls)
(for C (type Cls)
(recurse C) )
(accu 'Cnt Cls 1) ) ) ) ) ) ) )
(filter
'((X)
(<> (cdr X) (get *DB (car X) 0)) )
Cnt ) ) )
(de fixECnt ()
(for X (getl *DB)
(and (pair X) (set (car X) 0)) )
(for (F . @) (or *Dbs (2))
(for (This (seq F) This (seq This))
(and
(isa '+Entity This)
(not (: T))
(incECnt This) )
(at (0 . 10000) (commit)) ) )
(commit) )
(de badDep (X Var)
(let Lst (get (fin X) Var 'dep)
(make
(forall X
(unless (get This Var)
(when
(extract
'((S) (and (get This S) S))
Lst )
(link (cons This @)) ) ) ) ) ) )
### Rebuild tree ###
(de rebuild (X Var Cls Hook)
(let Lst NIL
(let? Base (get (or Hook *DB) Cls)
(unless X
(setq Lst
(if (; (treeRel Var Cls) hook)
(collect Var Cls Hook)
(collect Var Cls) ) ) )
(zapTree (get Base Var -1))
(put Base Var NIL)
(commit) )
(nond
(X
(let Len (length Lst)
(recur (Lst Len)
(unless (=0 Len)
(let (N (>> 1 (inc Len)) L (nth Lst N))
(re-index (car L) Var Hook)
(recurse Lst (dec N))
(recurse (cdr L) (- Len N)) ) ) ) ) )
((atom X)
(for Obj X
(re-index Obj Var Hook) ) )
(NIL
(for (Obj (seq X) Obj (seq Obj))
(and (isa Cls Obj) (re-index Obj Var Hook)) ) ) )
(commit) ) )
(de re-index (Obj Var Hook)
(unless (get Obj T)
(when (get Obj Var)
(rel> (meta Obj Var) Obj NIL
(put> (meta Obj Var) Obj NIL @)
Hook )
(at (0 . 10000) (commit)) ) ) )
### Database file management ###
(de dbfCheck ()
(for Cls (all)
(when
(and
(= `(char "+") (char Cls))
(isa '+Entity Cls)
(not (isa '+Remote Cls)) )
(or
(; Cls Dbf)
(meta Cls 'Dbf)
(println 'dbfCheck Cls) )
(for Rel (getl Cls)
(and
(pair Rel)
(isa '+relation (car Rel))
(or
(isa '+index (car Rel))
(isa '+Swap (car Rel))
(find
'((B)
(or
(isa '+index B)
(isa '+Swap B) ) )
(; Rel 1 bag) ) )
(not (; @ dbf))
(println 'dbfCheck (cdr Rel) Cls) ) ) ) ) )
(de displaced ()
(make
(for (F . @) *Dbs
(for (Obj (seq F) Obj (seq Obj))
(when
(or
(isa '+Remote Obj)
(and
(isa '+Entity Obj)
(<>
(meta Obj 'Dbf 1)
(car (id Obj T)) ) ) )
(link Obj) )
(wipe Obj) ) ) ) )
### Relocate Object ###
(dm (move!> . +Entity) (Dbf)
(for L *ExtDBs # ("path/" <cnt> <ofs>)
(let ((P N E) L Lck)
(for I N
(let (Fd (open (pack P (hax (dec I)))) (Cnt . Siz) (blk Fd 0))
(finally (close Fd)
(and (=1 I) (setq Lck Fd))
(for Blk (dec Cnt)
(let B (ext E (blk Fd Blk Siz Lck))
(when (fish == B NIL This)
(quit "Can't move" (cons P (id I Blk))) ) ) ) ) ) ) ) )
(dbSync)
(let New
(new
(or Dbf (meta This 'Dbf 1))
(val This) )
(for X (getl This)
(if (atom X)
(ifn (meta This X)
(put New X T)
(let Rel @
(if (isa '+Blob Rel)
(let F (blob This X)
(put> New X F)
(blob+ New X)
(%@ "unlink" NIL F) )
(lose> Rel This T)
(put> New X T) ) ) )
(ifn (meta This (cdr X))
(put New (cdr X) (car X))
(lose> @ This (car X))
(put> New (cdr X) (car X)) ) ) )
(decECnt This)
(=: T T)
(for (F . @) *Dbs
(for (Obj (seq F) Obj (seq Obj))
(let L (getl Obj)
(when (fish == L This)
(for X L
(let? Rel (and (pair X) (meta Obj (cdr X)))
(put> Obj (cdr X)
(fill
(if (isa '+Swap Rel)
(val (car X))
(car X) )
This
New ) ) ) ) ) ) ) )
(commit 'upd)
New ) )
### Dump Objects ###
(zero *DumpBlob)
(dm (dumpKey> . +Entity) ()
(unless (: T)
(pick
'((X)
(when (isa '+Key (meta This (fin X)))
(if (meta This (fin X) 'hook)
(cons (fin X) (get This @) X)
(cons (fin X) X) ) ) )
(getl This) ) ) )
(dm (dumpType> . +Entity) ()
(type This) )
(dm (dumpValue> . +Entity) (X)
X )
(de dump @
(let C (cons 0 10000)
(for (Q (pass search) (search Q))
(let (Obj @ K (fin (dumpExt Obj)))
(for X (getl Obj)
(unless (or (= K (fin X)) (= `(char "+") (char (fin X))))
(let? Y (dumpValue> Obj X)
(cond
((pair Y)
(prinl)
(space 3)
(if (atom (cdr Y))
(printsp (cdr Y))
(printsp (cadr Y))
(prin "`") )
(dumpVal (car Y)) )
((isa '+Blob (meta Obj X))
(let F (blob Obj X)
(ifn (info F)
(msg F " no blob")
(prinl)
(space 3)
(prin Y " `(tmp " (inc '*DumpBlob) ")")
(call "cp" "-a" F (tmp *DumpBlob)) ) ) )
(T
(prinl)
(space 3)
(print Y T) ) ) ) ) )
(prinl " )") )
(at C (println '(commit))) )
(println '(commit)) ) )
(de dumpExt (Obj)
(prin "(obj ")
(let K (dumpKey> Obj)
(ifn (last K)
(print (dumpType> Obj) (id Obj T))
(prin "(")
(printsp (dumpType> Obj) (car K))
(dumpVal (cadr K))
(when (pair (cddr K))
(space)
(dumpVal (car @)) )
(prin ")") )
K ) )
(de dumpVal (X)
(nond
((atom X)
(prin "(")
(dumpVal (++ X))
(while (pair X)
(space)
(dumpVal (++ X)) )
(when X (prin " . ") (dumpVal X))
(prin ")") )
((ext? X) (print X))
((type X) (print (val X)))
(NIL (prin "`") (dumpExt X) (prin ")")) ) )
# Dump/load data and blobs
(de dumpDB (Name . Prg)
(out (pack Name ".l") (run Prg))
(when (dir (tmp))
(out (pack Name ".tgz")
(chdir (tmp)
(in (append '("tar" "cfz" "-") (filter format @))
(echo) ) ) ) ) )
(de loadDB (Name)
(let Tgz (pack Name ".tgz")
(when (and (info Tgz) (n0 (car @)))
(in Tgz
(chdir (tmp)
(out '("tar" "xfz" "-") (echo)) ) ) ) )
(load (pack Name ".l") ) )
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