use of com.eightkdata.mongowp.server.api.oplog.InsertOplogOperation in project torodb by torodb.
the class OplogOperationParser method fromBson.
public static OplogOperation fromBson(@Nonnull BsonValue uncastedOp) throws BadValueException, TypesMismatchException, NoSuchKeyException {
if (!uncastedOp.isDocument()) {
throw new BadValueException("found a " + uncastedOp.getType().toString().toLowerCase(Locale.ROOT) + " where a document that represents a oplog operation " + "was expected");
}
BsonDocument doc = uncastedOp.asDocument();
OplogOperationType opType;
String opString = BsonReaderTool.getString(doc, "op");
try {
opType = OplogOperationType.fromOplogName(opString);
} catch (IllegalArgumentException ex) {
throw new BadValueException("Unknown oplog operation with type '" + opString + "'");
}
String ns;
try {
ns = BsonReaderTool.getString(doc, "ns");
} catch (NoSuchKeyException ex) {
throw new NoSuchKeyException("ns", "op does not contain required \"ns\" field: " + uncastedOp);
} catch (TypesMismatchException ex) {
throw ex.newWithMessage("\"ns\" field is not a string: " + uncastedOp);
}
if (ns.isEmpty() && !opType.equals(OplogOperationType.NOOP)) {
throw new BadValueException("\"ns\" field value cannot be empty " + "when op type is not 'n': " + doc);
}
String db;
String collection;
int firstDotIndex = ns.indexOf('.');
if (firstDotIndex == -1 || firstDotIndex + 1 == ns.length()) {
db = ns;
collection = null;
} else {
db = ns.substring(0, firstDotIndex);
collection = ns.substring(firstDotIndex + 1);
}
OpTime optime = OpTime.fromOplogEntry(doc);
long h = BsonReaderTool.getLong(doc, "h");
OplogVersion version = OplogVersion.valueOf(BsonReaderTool.getInteger(doc, "v"));
//Note: Mongodb v3 checks if the key exists or not, but doesn't check the value
boolean fromMigrate = doc.containsKey("fromMigrate");
BsonDocument o = BsonReaderTool.getDocument(doc, "o");
switch(opType) {
case DB:
return new DbOplogOperation(db, optime, h, version, fromMigrate);
case DB_CMD:
return new DbCmdOplogOperation(o, db, optime, h, version, fromMigrate);
case DELETE:
return new DeleteOplogOperation(o, db, collection, optime, h, version, fromMigrate, BsonReaderTool.getBoolean(doc, "b", false));
case INSERT:
//TODO: parse b
return new InsertOplogOperation(o, db, collection, optime, h, version, fromMigrate);
case NOOP:
return new NoopOplogOperation(o, db, optime, h, version, fromMigrate);
case UPDATE:
return new UpdateOplogOperation(BsonReaderTool.getDocument(doc, "o2"), db, collection, optime, h, version, fromMigrate, o, BsonReaderTool.getBoolean(doc, "b", false));
default:
throw new AssertionError(OplogOperationParser.class + " is not prepared to work with oplog operations of type " + opType);
}
}
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