Archived
1
0

fixes to migration script

This commit is contained in:
Jeff Becker 2016-02-08 13:47:06 -05:00
parent 450d07d6e5
commit 37df9ef131
No known key found for this signature in database
GPG Key ID: AB950234D6EA286B

View File

@ -22,32 +22,29 @@ var idPrefix="v1-";
// create a newsgroup name given board name
var makeGroupName = function(board) {
return "overchan.test.endchan." + board;
return "overchan.test.endchan." + board.boardUri;
}
// call function for each op on a board
var foreachOpsOnBoard = function(db, board, callback) {
var cur = db.collection("threads").find({boardUri: board});
cur.each(function(err, doc) {
if (doc) {
callback(doc);
} else {
console.log("error fetching op on "+board+" "+err);
}
});
}
// call a callback for each reply to op
// pass in the memegod post
var foreachReplyForOP = function(db, op, callback) {
getMessageIDForMemegodID(idPrefix+op._id, function(msgid) {
checkViaHeader("X-Mememgod-Id", idPrefix+op._id, function(msgid) {
// we do already has got it
callback(null);
}, function(msgid) {
// we don't has got it
var cur = db.collection("posts").find({ threadId: op.threadId});
cur.each(function (err, doc) {
callback(doc);
});
}, function() {
// not found?
console.log("op not in database!? "+op._id);
});
}
@ -66,6 +63,8 @@ var foreachBoard = function(db, callback) {
// convert a memegod post from board into an overchan article
// call a callback with the created post
var createArticle = function(post, board, callback) {
if (post == null) return;
var article = {
ip: post.ip.join("."),
message: post.message || " ",
@ -74,28 +73,28 @@ var createArticle = function(post, board, callback) {
headers: {
}
};
article.headers["X-Memegod-Post-Id"] = post.postId;
article.headers["X-Memegod-Thread-Id"] = post.threadId;
if (post.postId) {
article.headers["X-Memegod-Post-Id"] = idPrefix+post.postId
}
if (post.threadId) {
article.headers["X-Memegod-Thread-Id"] = idPrefix+post.threadId;
}
article.headers["X-Memegod-Id"] = idPrefix+post._id;
article.headers["X-Migrated-From"] = "MemeGod";
article.name = post.name || "Stephen Lynx";
article.subject = post.subject || "MongoDB is Web Scale";
callback(article);
}
// get message id given a memegod id
// must have already been inserted
// call callback pass in message id
var getMessageIDForMemegodID = function(id, callback) {
checkViaHeader("X-Memegod-Id", id, function(msgid) {
callback(msgid);
}, function() { console.log("message is not there?! "+id); });
}
// post an overchan article via the api
// call callback passing in the message-id of the new post
var postArticle = function(article, callback) {
checkViaHeader("X-Memegod-Id", article.headers["X-Memegod-Id"], function(msgid) {
// we has got it already
callback(msgid);
}, function(msgid) {
// we don't has got it
var req = http.request({
port: srndApiPort,
method: "POST",
@ -111,14 +110,16 @@ var postArticle = function(article, callback) {
});
res.on("end", function() {
var j = JSON.parse(data)
if (j) {
var msgid = j[0];
var msgid = j.id;
callback(msgid);
}
})
});
req.write(JSON.stringify(article));
req.end();
}, function(msgid) {
// not there
});
}
// check if an article exists given header name and header value
@ -143,6 +144,7 @@ var checkViaHeader = function(name, value, yesCb, noCb) {
}
});
});
req.end();
}
// check if a post exists
@ -153,24 +155,24 @@ var checkPostExists = function(post, yescb, nocb) {
}
var putBoard = function(db, board) {
// for each op
foreachOpsOnBoard(db, board.boardUri, function(op) {
// create OP
createArticle(op, board.boardUrl, function(opArticle) {
createArticle(op, board, function(opArticle) {
// post OP
postArticle(opArticle, function (opMsgId) {
console.log("posted op "+ opMsgId);
// for each reply for OP
foreachReplyForOP(db, op, function(post) {
if (post) {
// put create reply
createArticle(post, board.boardUri, function(article) {
createArticle(post, board, function(article) {
// set references header
article.headers["References"] = opMsgId;
postArticle(article, function(replyMsgId) {
console.log("posted reply to "+opMsgId+" as "+replyMsgId);
});
// post reply
postArticle(article, function() {});
});
}
});
});
});
});
@ -179,7 +181,9 @@ var putBoard = function(db, board) {
memegodClient.connect(url, function(err, db) {
console.log("connected to the meme god");
foreachBoard(db, function(board) {
console.log("put board: "+board.boardUri);
console.log("updating "+board.boardUri);
putBoard(db, board);
});
console.log("the meme god has spoken");
db.close();
});