auth

Paddy 2015-04-06 Child:cf6c1f05eb21

154:5f670aba87b4 Go to Latest

auth/session_postgres.go

Implement a session store in postgres. Write the postgres implementation of our sessionStore type. Write the SQL statements to initialize the database for us. Include the postgres implementation of our sessionStore type in our sessionStore tests when the appropriate environment variable is passed.

Download raw file
View source Diff to previous Annotate
History
paddy@154 1 package auth
paddy@154 2
paddy@154 3 import (
paddy@154 4 "time"
paddy@154 5
paddy@154 6 "code.secondbit.org/uuid.hg"
paddy@154 7
paddy@154 8 "github.com/lib/pq"
paddy@154 9 "github.com/secondbit/pan"
paddy@154 10 )
paddy@154 11
paddy@154 12 func (s Session) GetSQLTableName() string {
paddy@154 13 return "sessions"
paddy@154 14 }
paddy@154 15
paddy@154 16 func (p *postgres) createSessionSQL(session Session) *pan.Query {
paddy@154 17 fields, values := pan.GetFields(session)
paddy@154 18 query := pan.New(pan.POSTGRES, "INSERT INTO "+pan.GetTableName(session))
paddy@154 19 query.Include("(" + pan.QueryList(fields) + ")")
paddy@154 20 query.Include("VALUES")
paddy@154 21 query.Include("("+pan.VariableList(len(values))+")", values...)
paddy@154 22 return query.FlushExpressions(" ")
paddy@154 23 }
paddy@154 24
paddy@154 25 func (p *postgres) createSession(session Session) error {
paddy@154 26 query := p.createSessionSQL(session)
paddy@154 27 _, err := p.db.Exec(query.String(), query.Args...)
paddy@154 28 if e, ok := err.(*pq.Error); ok && e.Constraint == "sessions_pkey" {
paddy@154 29 err = ErrSessionAlreadyExists
paddy@154 30 }
paddy@154 31 return err
paddy@154 32 }
paddy@154 33
paddy@154 34 func (p *postgres) getSessionSQL(id string) *pan.Query {
paddy@154 35 var session Session
paddy@154 36 fields, _ := pan.GetFields(session)
paddy@154 37 query := pan.New(pan.POSTGRES, "SELECT "+pan.QueryList(fields)+" FROM "+pan.GetTableName(session))
paddy@154 38 query.IncludeWhere()
paddy@154 39 query.Include(pan.GetUnquotedColumn(session, "ID")+" = ?", id)
paddy@154 40 return query.FlushExpressions(" ")
paddy@154 41 }
paddy@154 42
paddy@154 43 func (p *postgres) getSession(id string) (Session, error) {
paddy@154 44 query := p.getSessionSQL(id)
paddy@154 45 rows, err := p.db.Query(query.String(), query.Args...)
paddy@154 46 if err != nil {
paddy@154 47 return Session{}, err
paddy@154 48 }
paddy@154 49 var session Session
paddy@154 50 var found bool
paddy@154 51 for rows.Next() {
paddy@154 52 err := pan.Unmarshal(rows, &session)
paddy@154 53 if err != nil {
paddy@154 54 return session, err
paddy@154 55 }
paddy@154 56 found = true
paddy@154 57 }
paddy@154 58 if err = rows.Err(); err != nil {
paddy@154 59 return session, err
paddy@154 60 }
paddy@154 61 if !found {
paddy@154 62 return session, ErrSessionNotFound
paddy@154 63 }
paddy@154 64 return session, nil
paddy@154 65 }
paddy@154 66
paddy@154 67 func (p *postgres) removeSessionSQL(id string) *pan.Query {
paddy@154 68 var session Session
paddy@154 69 query := pan.New(pan.POSTGRES, "DELETE FROM "+pan.GetTableName(session))
paddy@154 70 query.IncludeWhere()
paddy@154 71 query.Include(pan.GetUnquotedColumn(session, "ID")+" = ?", id)
paddy@154 72 return query.FlushExpressions(" ")
paddy@154 73 }
paddy@154 74
paddy@154 75 func (p *postgres) removeSession(id string) error {
paddy@154 76 query := p.removeSessionSQL(id)
paddy@154 77 res, err := p.db.Exec(query.String(), query.Args...)
paddy@154 78 if err != nil {
paddy@154 79 return err
paddy@154 80 }
paddy@154 81 rows, err := res.RowsAffected()
paddy@154 82 if err != nil {
paddy@154 83 return err
paddy@154 84 }
paddy@154 85 if rows < 1 {
paddy@154 86 return ErrSessionNotFound
paddy@154 87 }
paddy@154 88 return nil
paddy@154 89 }
paddy@154 90
paddy@154 91 func (p *postgres) listSessionsSQL(profile uuid.ID, before time.Time, num int64) *pan.Query {
paddy@154 92 var session Session
paddy@154 93 fields, _ := pan.GetFields(session)
paddy@154 94 query := pan.New(pan.POSTGRES, "SELECT "+pan.QueryList(fields)+" FROM "+pan.GetTableName(session))
paddy@154 95 query.IncludeWhere()
paddy@154 96 query.Include(pan.GetUnquotedColumn(session, "ProfileID")+" = ?", profile)
paddy@154 97 if !before.IsZero() {
paddy@154 98 query.Include(pan.GetUnquotedColumn(session, "Created")+" < ?", before)
paddy@154 99 }
paddy@154 100 query.FlushExpressions(" AND ")
paddy@154 101 if num > 0 {
paddy@154 102 query.IncludeLimit(num)
paddy@154 103 }
paddy@154 104 return query.FlushExpressions(" ")
paddy@154 105 }
paddy@154 106
paddy@154 107 func (p *postgres) listSessions(profile uuid.ID, before time.Time, num int64) ([]Session, error) {
paddy@154 108 query := p.listSessionsSQL(profile, before, num)
paddy@154 109 rows, err := p.db.Query(query.String(), query.Args...)
paddy@154 110 if err != nil {
paddy@154 111 return []Session{}, err
paddy@154 112 }
paddy@154 113 var sessions []Session
paddy@154 114 for rows.Next() {
paddy@154 115 var session Session
paddy@154 116 err := pan.Unmarshal(rows, &session)
paddy@154 117 if err != nil {
paddy@154 118 return sessions, err
paddy@154 119 }
paddy@154 120 sessions = append(sessions, session)
paddy@154 121 }
paddy@154 122 if err = rows.Err(); err != nil {
paddy@154 123 return sessions, err
paddy@154 124 }
paddy@154 125 return sessions, nil
paddy@154 126 }