upgradedb.go (view raw)
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// // Copyright (c) 2019 Ted Unangst <tedu@tedunangst.com> // // Permission to use, copy, modify, and distribute this software for any // purpose with or without fee is hereby granted, provided that the above // copyright notice and this permission notice appear in all copies. // // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR // ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN // ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF // OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. package main import ( "database/sql" "os" "strings" "humungus.tedunangst.com/r/webs/htfilter" ) var myVersion = 51 // filemeta.meta type dbexecer interface { Exec(query string, args ...interface{}) (sql.Result, error) } func doordie(db dbexecer, s string, args ...interface{}) { _, err := db.Exec(s, args...) if err != nil { elog.Fatalf("can't run %s: %s", s, err) } } func upgradedb() { db := opendatabase() dbversion := 0 getconfig("dbversion", &dbversion) getconfig("servername", &serverName) if dbversion < 40 { elog.Fatal("database is too old to upgrade") } var err error var tx *sql.Tx try := func(s string, args ...interface{}) *sql.Rows { var rows *sql.Rows if strings.HasPrefix(s, "select") { if tx != nil { rows, err = tx.Query(s, args...) } else { rows, err = db.Query(s, args...) } } else { if tx != nil { _, err = tx.Exec(s, args...) } else { _, err = db.Exec(s, args...) } } if err != nil { elog.Fatalf("can't run %s: %s", s, err) } return rows } setV := func(ver int64) { try("update config set value = ? where key = 'dbversion'", ver) } switch dbversion { case 41: tx, err := db.Begin() if err != nil { elog.Fatal(err) } rows, err := tx.Query("select honkid, noise from honks where format = 'markdown' and precis <> ''") if err != nil { elog.Fatal(err) } m := make(map[int64]string) var dummy Honk for rows.Next() { err = rows.Scan(&dummy.ID, &dummy.Noise) if err != nil { elog.Fatal(err) } precipitate(&dummy) m[dummy.ID] = dummy.Noise } rows.Close() for id, noise := range m { _, err = tx.Exec("update honks set noise = ? where honkid = ?", noise, id) if err != nil { elog.Fatal(err) } } err = tx.Commit() if err != nil { elog.Fatal(err) } doordie(db, "update config set value = 42 where key = 'dbversion'") fallthrough case 42: doordie(db, "update honks set what = 'honk', flags = flags & ~ 32 where what = 'tonk' or what = 'wonk'") doordie(db, "delete from honkmeta where genus = 'wonkles' or genus = 'guesses'") doordie(db, "update config set value = 43 where key = 'dbversion'") fallthrough case 43: try("alter table honks add column plain text") try("update honks set plain = ''") setV(44) fallthrough case 44: makeplain := func(noise, precis, format string) []string { var plain []string var filt htfilter.Filter filt.WithLinks = true if precis != "" { t, _ := filt.TextOnly(precis) plain = append(plain, t) } if format == "html" { t, _ := filt.TextOnly(noise) plain = append(plain, t) } else { plain = append(plain, noise) } return plain } tx, err = db.Begin() if err != nil { elog.Fatal(err) } plainmap := make(map[int64][]string) rows, err := tx.Query("select honkid, noise, precis, format from honks") if err != nil { elog.Fatal(err) } for rows.Next() { var honkid int64 var noise, precis, format string err = rows.Scan(&honkid, &noise, &precis, &format) if err != nil { elog.Fatal(err) } plainmap[honkid] = makeplain(noise, precis, format) } rows.Close() rows, err = tx.Query("select honkid, name, description from donks join filemeta on donks.fileid = filemeta.fileid") if err != nil { elog.Fatal(err) } for rows.Next() { var honkid int64 var name, desc string err = rows.Scan(&honkid, &name, &desc) if err != nil { elog.Fatal(err) } plainmap[honkid] = append(plainmap[honkid], name) plainmap[honkid] = append(plainmap[honkid], desc) } rows.Close() for honkid, plain := range plainmap { try("update honks set plain = ? where honkid = ?", strings.Join(plain, " "), honkid) } setV(45) err = tx.Commit() if err != nil { elog.Fatal(err) } tx = nil fallthrough case 45: try("create index idx_honkswhotwo on honks(whofore) where whofore = 2") setV(46) fallthrough case 46: try("create index idx_honksforme on honks(whofore) where whofore = 1") setV(47) fallthrough case 47: rows := try("select userid, options from users where userid > 0") var users []*WhatAbout for rows.Next() { var user WhatAbout var jopt string err = rows.Scan(&user.ID, &jopt) if err != nil { elog.Fatal(err) } err = unjsonify(jopt, &user.Options) if err != nil { elog.Fatal(err) } users = append(users, &user) } rows.Close() for _, user := range users { chatpubkey, chatseckey := newChatKeys() user.Options.ChatPubKey = tob64(chatpubkey.key[:]) user.Options.ChatSecKey = tob64(chatseckey.key[:]) jopt, _ := jsonify(user.Options) try("update users set options = ? where userid = ?", jopt, user.ID) } setV(48) fallthrough case 48: try("create index idx_honksurl on honks(url)") setV(49) fallthrough case 49: try("create index idx_honksrid on honks(rid) where rid <> ''") setV(50) fallthrough case 50: try("alter table filemeta add column meta text") try("update filemeta set meta = '{}'") setV(51) fallthrough case 51: try("analyze") closedatabases() default: elog.Fatalf("can't upgrade unknown version %d", dbversion) } os.Exit(0) } |