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session/session/memory.js at master · ExpressoJava/session · GitHub
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/*!
* express-session
* Copyright(c) 2010 Sencha Inc.
* Copyright(c) 2011 TJ Holowaychuk
* Copyright(c) 2015 Douglas Christopher Wilson
* MIT Licensed
*/
'use strict'
;
/**
* Module dependencies.
*
@private
*/
var
Store
=
require
(
'./store'
)
var
util
=
require
(
'util'
)
/**
* Shim setImmediate for node.js < 0.10
*
@private
*/
/* istanbul ignore next */
var
defer
=
typeof
setImmediate
===
'function'
?
setImmediate
:
function
(
fn
)
{
process
.
nextTick
(
fn
.
bind
.
apply
(
fn
,
arguments
)
)
}
/**
* Module exports.
*/
module
.
exports
=
MemoryStore
/**
* A session store in memory.
*
@public
*/
function
MemoryStore
(
)
{
Store
.
call
(
this
)
this
.
sessions
=
Object
.
create
(
null
)
}
/**
* Inherit from Store.
*/
util
.
inherits
(
MemoryStore
,
Store
)
/**
* Get all active sessions.
*
*
@param
{
function
} callback
*
@public
*/
MemoryStore
.
prototype
.
all
=
function
all
(
callback
)
{
var
sessionIds
=
Object
.
keys
(
this
.
sessions
)
var
sessions
=
Object
.
create
(
null
)
for
(
var
i
=
0
;
i
<
sessionIds
.
length
;
i
++
)
{
var
sessionId
=
sessionIds
[
i
]
var
session
=
getSession
.
call
(
this
,
sessionId
)
if
(
session
)
{
sessions
[
sessionId
]
=
session
;
}
}
callback
&&
defer
(
callback
,
null
,
sessions
)
}
/**
* Clear all sessions.
*
*
@param
{
function
} callback
*
@public
*/
MemoryStore
.
prototype
.
clear
=
function
clear
(
callback
)
{
this
.
sessions
=
Object
.
create
(
null
)
callback
&&
defer
(
callback
)
}
/**
* Destroy the session associated with the given session ID.
*
*
@param
{
string
} sessionId
*
@public
*/
MemoryStore
.
prototype
.
destroy
=
function
destroy
(
sessionId
,
callback
)
{
delete
this
.
sessions
[
sessionId
]
callback
&&
defer
(
callback
)
}
/**
* Fetch session by the given session ID.
*
*
@param
{
string
} sessionId
*
@param
{
function
} callback
*
@public
*/
MemoryStore
.
prototype
.
get
=
function
get
(
sessionId
,
callback
)
{
defer
(
callback
,
null
,
getSession
.
call
(
this
,
sessionId
)
)
}
/**
* Commit the given session associated with the given sessionId to the store.
*
*
@param
{
string
} sessionId
*
@param
{
object
} session
*
@param
{
function
} callback
*
@public
*/
MemoryStore
.
prototype
.
set
=
function
set
(
sessionId
,
session
,
callback
)
{
this
.
sessions
[
sessionId
]
=
JSON
.
stringify
(
session
)
callback
&&
defer
(
callback
)
}
/**
* Get number of active sessions.
*
*
@param
{
function
} callback
*
@public
*/
MemoryStore
.
prototype
.
length
=
function
length
(
callback
)
{
this
.
all
(
function
(
err
,
sessions
)
{
if
(
err
)
return
callback
(
err
)
callback
(
null
,
Object
.
keys
(
sessions
)
.
length
)
}
)
}
/**
* Touch the given session object associated with the given session ID.
*
*
@param
{
string
} sessionId
*
@param
{
object
} session
*
@param
{
function
} callback
*
@public
*/
MemoryStore
.
prototype
.
touch
=
function
touch
(
sessionId
,
session
,
callback
)
{
var
currentSession
=
getSession
.
call
(
this
,
sessionId
)
if
(
currentSession
)
{
// update expiration
currentSession
.
cookie
=
session
.
cookie
this
.
sessions
[
sessionId
]
=
JSON
.
stringify
(
currentSession
)
}
callback
&&
defer
(
callback
)
}
/**
* Get session from the store.
*
@private
*/
function
getSession
(
sessionId
)
{
var
sess
=
this
.
sessions
[
sessionId
]
if
(
!
sess
)
{
return
}
// parse
sess
=
JSON
.
parse
(
sess
)
var
expires
=
typeof
sess
.
cookie
.
expires
===
'string'
?
new
Date
(
sess
.
cookie
.
expires
)
:
sess
.
cookie
.
expires
// destroy expired session
if
(
expires
&&
expires
<=
Date
.
now
(
)
)
{
delete
this
.
sessions
[
sessionId
]
return
}
return
sess
}
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