river.toml

# MySQL address, user and password
# user must have replication privilege in MySQL.
my_addr = "127.0.0.1:3306"
my_user = "root"
my_pass = ""
my_charset = "utf8"

# If you want sync all database data, you need set my_alldb="yes"
my_alldb = "no"

# MongoDB address
mongo_addr = "127.0.0.1:27017"
mongo_user = ""
mongo_pass = ""

# Path to store data, like master.info, if not set or empty,
# we must use this to support breakpoint resume syncing. 
# TODO: support other storage, like etcd. 
data_dir = "./var"

# Inner Http status address
stat_addr = "127.0.0.1:12800"

# pseudo server id like a slave 
server_id = 1001

# mysql or mariadb
flavor = "mysql"

# mysqldump execution path
# if not set or empty, ignore mysqldump.
mysqldump = "mysqldump"

# minimal items to be inserted in one bulk
bulk_size = 128

# force flush the pending requests if we don't have enough items >= bulk_size
flush_bulk_time = "200ms"

# MySQL data source
[[source]]
schema = "test"

# Only below tables will be synced into MongoDB.
# "t_[0-9]{4}" is a wildcard table format, you can use it if you have many sub tables, like table_0000 - table_1023
# I don't think it is necessary to sync all tables in a database.
tables = ["t", "t_[0-9]{4}", "tfield", "tfilter"]

# Below is for special rule mapping

# Very simple example
# 
# desc t;
# +-------+--------------+------+-----+---------+-------+
# | Field | Type         | Null | Key | Default | Extra |
# +-------+--------------+------+-----+---------+-------+
# | id    | int(11)      | NO   | PRI | NULL    |       |
# | name  | varchar(256) | YES  |     | NULL    |       |
# +-------+--------------+------+-----+---------+-------+
# 
# The table `t` will be synced to MongoDB database `test` and collection `t`.
[[rule]]
schema = "test"
table = "t"
database = "test"
collection = "t"

# Wildcard table rule, the wildcard table must be in source tables 
# All tables which match the wildcard format will be synced to MongoDB database `test` and collection `t`.
# In this example, all tables must have same schema with above table `t`;
[[rule]]
schema = "test"
table = "t_[0-9]{4}"
database = "test"
collection = "t"

# Simple field rule 
#
# desc tfield;
# +----------+--------------+------+-----+---------+-------+
# | Field    | Type         | Null | Key | Default | Extra |
# +----------+--------------+------+-----+---------+-------+
# | id       | int(11)      | NO   | PRI | NULL    |       |
# | tags     | varchar(256) | YES  |     | NULL    |       |
# | keywords | varchar(256) | YES  |     | NULL    |       |
# +----------+--------------+------+-----+---------+-------+
#
[[rule]]
schema = "test"
table = "tfield"
database = "test"
collection = "tfield"

[rule.field]
# Map column `id` to MongoDB field `mongo_id`
id="mongo_id"
# Map column `tags` to MongoDB field `mongo_tags` with array type 
tags="mongo_tags,list"
# Map column `keywords` to MongoDB with array type
keywords=",list"

# Filter rule 
#
# desc tfilter;
# +-------+--------------+------+-----+---------+-------+
# | Field | Type         | Null | Key | Default | Extra |
# +-------+--------------+------+-----+---------+-------+
# | id    | int(11)      | NO   | PRI | NULL    |       |
# | c1    | int(11)      | YES  |     | 0       |       |
# | c2    | int(11)      | YES  |     | 0       |       |
# | name  | varchar(256) | YES  |     | NULL    |       |
# +-------+--------------+------+-----+---------+-------+
#
[[rule]]
schema = "test"
table = "tfilter"
database = "test"
collection = "tfilter"

# Only sync following columns
filter = ["id", "name"]

# id rule
#
# desc tid_[0-9]{4};
# +----------+--------------+------+-----+---------+-------+
# | Field    | Type         | Null | Key | Default | Extra |
# +----------+--------------+------+-----+---------+-------+
# | id       | int(11)      | NO   | PRI | NULL    |       |
# | tag      | varchar(256) | YES  |     | NULL    |       |
# | desc     | varchar(256) | YES  |     | NULL    |       |
# +----------+--------------+------+-----+---------+-------+
#
[[rule]]
schema = "test"
table = "tid_[0-9]{4}"
database = "test"
collection = "t"
# The mongodb doc's _id will be `id`:`tag`
# It is useful for merge muliple table into one type while theses tables have same PK 
id = ["id", "tag"]