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Mukul
jio
Commits
bc3765c4
Commit
bc3765c4
authored
Feb 19, 2013
by
Tristan Cavelier
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synchro prototype #2
parent
a408ebb5
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src/jio.storage/synchro2.js
src/jio.storage/synchro2.js
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src/jio.storage/synchro2.js
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bc3765c4
var
that
=
{};
var
priv
=
{};
var
RESPONSES
=
{
"
put
"
:[],
"
get
"
:[]};
var
todo
=
function
(
string
)
{
global
.
todo
=
global
.
todo
||
{};
if
(
!
global
.
todo
[
string
])
{
global
.
todo
[
string
]
=
true
;
console
.
log
(
'
TODO:
'
+
string
);
}
};
priv
.
clone
=
function
(
object
)
{
var
tmp
=
JSON
.
stringify
(
object
);
if
(
tmp
===
undefined
)
{
return
undefined
;
}
return
JSON
.
parse
(
tmp
);
};
that
.
addJob
=
function
(
method
,
storage_spec
,
doc
,
option
,
success
,
error
)
{
console
.
log
(
method
+
"
"
+
JSON
.
stringify
(
storage_spec
)
+
"
"
+
JSON
.
stringify
(
doc
)
+
"
"
+
JSON
.
stringify
(
option
));
var
r
=
RESPONSES
[
method
].
shift
();
setTimeout
(
function
()
{
if
(
r
.
ok
===
true
)
{
success
(
r
);
}
else
{
error
(
r
);
}
},
Math
.
floor
(
Math
.
random
()
*
500
));
// {0..500}
};
priv
.
send
=
function
(
method
,
index
,
doc
,
option
,
callback
)
{
console
.
log
(
"
send
"
+
method
+
"
"
+
JSON
.
stringify
(
priv
.
storage_list
[
index
])
+
"
"
+
JSON
.
stringify
(
doc
)
+
"
"
+
JSON
.
stringify
(
option
));
var
wrapped_callback_success
,
wrapped_callback_error
;
callback
=
callback
||
priv
.
emptyFunction
;
wrapped_callback_success
=
function
(
response
)
{
callback
(
method
,
index
,
undefined
,
response
);
};
wrapped_callback_error
=
function
(
err
)
{
callback
(
method
,
index
,
err
,
undefined
);
};
that
.
addJob
(
method
,
priv
.
storage_list
[
index
],
doc
,
option
,
wrapped_callback_success
,
wrapped_callback_error
);
};
priv
.
sendToAll
=
function
(
method
,
doc
,
option
,
callback
)
{
console
.
log
(
"
sendToAll
"
+
method
+
"
"
+
JSON
.
stringify
(
doc
)
+
"
"
+
JSON
.
stringify
(
option
));
var
i
;
for
(
i
=
0
;
i
<
priv
.
storage_list
.
length
;
i
+=
1
)
{
priv
.
send
(
method
,
i
,
doc
,
option
,
callback
);
}
};
priv
.
emptyFunction
=
function
()
{};
////////////////////////////////////////////////////////////////////////////////
// NEW
priv
.
replicateRevToDistantRev
=
function
(
revision
,
storage_index
)
{
throw
{
"
name
"
:
"
NotImplementedError
"
,
"
message
"
:
"
replicateRevToDistantRev
"
};
};
// Check pass only if:
// - all the substorages answer the requests
// - they respond exactly the same thing
// - consistency is correct
// Consistency is correct if:
// - it has a correct revision
// If answers differ, the good answer is the first one which is more returned
that
.
check
=
function
(
command
)
{
priv
.
check
(
command
.
cloneDoc
(),
command
.
cloneOption
(),
that
.
success
,
that
.
error
);
};
that
.
repair
=
function
(
command
)
{
priv
.
repair
(
command
.
cloneDoc
(),
command
.
cloneOption
(),
true
,
that
.
success
,
that
.
error
);
};
priv
.
check
=
function
(
doc
,
option
,
success
,
error
)
{
priv
.
repair
(
doc
,
option
,
false
,
success
,
error
);
};
priv
.
repair
=
function
(
doc
,
option
,
repair
,
callback
)
{
callback
=
callback
||
priv
.
emptyFunction
;
option
=
option
||
{};
var
begin
=
function
()
{
var
param
=
{
"
doc
"
:
doc
,
"
option
"
:
option
,
"
repair
"
:
repair
,
"
responses
"
:
{
"
count
"
:
0
,
"
list
"
:
[
// 0: response0
// 1: response1
// 2: response2
],
"
stats
"
:
{
// responseA: [0, 1]
// responseB: [2]
},
"
stats_items
"
:
[
// 0: [responseA, [0, 1]]
// 1: [responseB, [2]]
]
}
};
getAllDocuments
(
param
);
},
getAllDocuments
=
function
(
param
)
{
var
i
,
doc
=
priv
.
clone
(
param
.
doc
),
option
=
priv
.
clone
(
param
.
option
);
option
.
conflicts
=
true
;
option
.
revs
=
true
;
option
.
revs_info
=
true
;
for
(
i
=
0
;
i
<
priv
.
storage_list
.
length
;
i
+=
1
)
{
doc
.
_rev
=
priv
.
replicateRevToDistantRev
(
doc
.
_rev
,
i
);
priv
.
send
(
"
get
"
,
i
,
doc
,
option
,
dealResults
(
param
));
}
},
dealResults
=
function
(
param
)
{
var
deal_result_state
=
"
ok
"
;
return
function
(
method
,
index
,
err
,
response
)
{
if
(
deal_result_state
!==
"
ok
"
)
{
// deal result is in a wrong state, exit
return
;
}
if
(
err
)
{
if
(
err
.
status
!==
404
)
{
// get document failed, exit
deal_result_state
=
"
error
"
;
callback
({
"
status
"
:
40
,
"
statusText
"
:
"
Check Failed
"
,
"
error
"
:
"
check_failed
"
,
"
message
"
:
"
An error occured on the sub storage
"
,
"
reason
"
:
err
.
reason
});
return
;
}
}
// success to get the document
// add the response in memory
param
.
responses
.
count
+=
1
;
param
.
responses
.
list
[
index
]
=
response
;
param
.
responses
.
revs
[
response
.
_rev
]
=
response
;
if
(
param
.
responses
.
count
!==
param
.
responses
.
list
.
length
)
{
// this is not the last response, wait for the next response
return
;
}
// this is now the last response
makeResponsesStats
(
param
.
responses
);
if
(
param
.
responses
.
stats_items
.
length
===
1
)
{
// the responses are equals!
callback
(
undefined
,
{
"
ok
"
:
true
,
"
id
"
:
param
.
doc
.
_id
,
"
rev
"
:
priv
.
distantRevToReplicateRev
(
typeof
param
.
responses
.
list
[
0
]
===
"
object
"
?
param
.
responses
.
list
[
0
].
_rev
:
undefined
)
});
return
;
}
// the responses are different
if
(
param
.
repair
===
false
)
{
// do not repair
callback
({
"
status
"
:
41
,
"
statusText
"
:
"
Check Not Ok
"
,
"
error
"
:
"
check_not_ok
"
,
"
message
"
:
"
Some documents are different in the sub storages
"
,
"
reason
"
:
"
Storage contents differ
"
});
return
;
}
// repair
synchronizeAllSubStorage
(
param
);
};
},
makeResponsesStats
=
function
(
responses
)
{
var
i
;
for
(
i
=
0
;
i
<
responses
.
count
;
i
+=
1
)
{
var
str_response
=
JSON
.
stringify
(
responses
.
list
[
i
]);
if
(
responses
.
stats
[
str_response
]
===
undefined
)
{
responses
.
stats
[
str_response
]
=
[];
responses
.
stats_items
.
push
(
str_response
,
responses
.
stats
[
str_responses
]
);
}
responses
.
stats
[
str_response
].
push
(
i
);
}
},
synchronizeAllSubStorage
=
function
(
param
)
{
var
i
,
j
,
len
=
param
.
responses
.
stats_items
.
length
;
for
(
i
=
0
;
i
<
len
;
i
+=
1
)
{
// browsing responses
for
(
j
=
0
;
j
<
len
;
j
+=
1
)
{
// browsing storage list
if
(
i
!==
j
)
{
synchronizeAllSubStorage
(
param
,
param
.
responses
.
stats_items
[
i
][
0
],
param
.
responses
.
stats_items
[
j
][
1
]
);
}
}
}
},
synchronizeResponseToSubStorage
=
function
(
param
,
response
,
storage_list
)
{
throw
{
"
name
"
:
"
NotImplementedError
"
,
"
message
"
:
"
synchronizeResponseToSubStorage
"
};
};
begin
();
};
////////////////////////////////////////////////////////////////////////////////
// TEST
RESPONSES
.
get
.
push
({
"
_id
"
:
"
doc1
"
,
"
_rev
"
:
"
2-222
"
});
priv
.
storage_list
=
[
"
revision1
"
];
priv
.
repair
({
"
_id
"
:
"
doc1
"
,
"
_rev
"
:
"
2-2
"
},
{},
function
(
err
,
response
)
{
console
.
log
(
"
END
"
);
console
.
log
(
err
||
response
);
});
// priv.storage_list = ["revision1", "revision2", "revision3"];
// priv.repair({"_id": "doc1", "_rev": "2-222"}, function (err, response) {
// console.log("END");
// console.log(err || response);
// });
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