initial import

.gitignore

@@ -1,3 +1,16 @@
+.DS_Store
+*.pyc
+*.swo
+*.swp
+dist/*
+tmp/*
+venv/*
+target/*
+project/target/*
+project/project/target/*
+logs/*
+.settings/*
+# github
 *.py[cod]
 
 # C extensions

README.rst

@@ -0,0 +1,33 @@
+myvardump, myvardiff
+============================
+
+- myvardump.py: dump MySQL `show global variables` to json
+- myvardiff.py: diff running MySQL `show global variables` to json(dumped by myvardump)
+
+.. 
+
+ $ python myvardump.py --config tmp/my.cnf --out tmp/test.json
+ $ python myvardiff.py --config tmp/my.cnf --before tmp/test.json
+ read_buffer_size:       131072 -> 1048576
+ wait_timeout:   28890 -> 28800
+
+Installation
+============================
+.. 
+
+ git clone https://github.com/netmarkjp/myvardiff
+ pip install MySQL-python
+
+How to Use
+============================
+.. 
+
+ python myvardump.py --config example.my.cnf --out variables.json
+
+.. 
+
+ python myvardiff.py --config example.my.cnf --before variables.json
+
+Note
+----------------------------
+This program was inspired by myprofiler( https://github.com/methane/myprofiler )

example.my.cnf

@@ -0,0 +1,5 @@
+[DEFAULT]
+host = localhost
+# socket = 
+user = root
+password = 

myvardiff.py

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+#!/usr/bin/env python
+#coding: utf-8
+
+"""myvardiff - diff mysql variables to dumped variables(json, dumped by myvardump)
+
+https://github.com/netmarkjp/myvardiff
+
+This program was inspired by myprofiler( https://github.com/methane/myprofiler )
+"""
+
+import os
+import sys
+import json
+from ConfigParser import SafeConfigParser
+from optparse import OptionParser
+
+try:
+    # MySQL-python
+    import MySQLdb
+    from MySQLdb.cursors import DictCursor
+except ImportError:
+    try:
+        # PyMySQL
+        import pymysql as MySQLdb
+        from pymysql.cursors import DictCursor
+    except ImportError:
+        print "Please install MySQLdb(MySQL-python) or PyMySQL"
+        sys.exit(1)
+
+
+def connect(conf='~/.my.cnf', section='DEFAULT'):
+    """
+    connect to MySQL from conf file.
+    """
+    parser = SafeConfigParser()
+    parser.read([os.path.expanduser(conf)])
+
+    args = {}
+
+    if parser.has_option(section, 'socket'):
+        args['unix_socket'] = parser.get(section, 'socket')
+    else:
+        args['host'] = parser.get(section, 'host')
+        if parser.has_option(section, 'port'):
+            args['port'] = int(parser.get(section, 'port'))
+    args['user'] = parser.get(section, 'user')
+    args['passwd'] = parser.get(section, 'password')
+    args['charset'] = 'utf8'
+    return MySQLdb.connect(**args)
+
+
+def variables(con):
+    cur = con.cursor(DictCursor)
+    cur.execute("show global variables")
+    for row in cur.fetchall():
+        if row['Variable_name'] is None:
+            continue
+        if row['Value'] is None:
+            continue
+        yield row
+
+
+def build_option_parser():
+    parser = OptionParser()
+    parser.add_option(
+        '-c', '--config',
+        help="read MySQL configuration from. (default: '~/.my.cnf'",
+        default='~/.my.cnf'
+    )
+    parser.add_option(
+        '-s', '--section',
+        help="read MySQL configuration from this section. (default: '[DEFAULT]')",
+        default="DEFAULT"
+    )
+    parser.add_option(
+        '--before',
+        help="dumped json filename by myvardump.py (default: 'myvardump.json')",
+        default="myvardump.json"
+    )
+    return parser
+
+
+def main():
+    parser = build_option_parser()
+    opts, args = parser.parse_args()
+
+    try:
+        con = connect(opts.config, opts.section)
+    except Exception, e:
+        parser.error(e)
+
+    values = dict()
+    for variable in variables(con):
+        values.update({variable['Variable_name']: variable['Value']})
+    con.close()
+
+    for k, v in json.load(open(opts.before)).iteritems():
+        if k not in values:
+            print "%s missing" % k
+        elif v != values[k]:
+            print "%s:\t%s -> %s" % (k, v, values[k])
+
+
+if __name__ == '__main__':
+    main()

myvardump.py

@@ -0,0 +1,109 @@
+#!/usr/bin/env python
+#coding: utf-8
+
+"""myvardump - dump mysql variables to json (for myvardiff)
+
+https://github.com/netmarkjp/myvardump
+
+This program was inspired by myprofiler( https://github.com/methane/myprofiler )
+"""
+
+import os
+import sys
+import json
+import time
+from ConfigParser import SafeConfigParser
+from optparse import OptionParser
+
+try:
+    # MySQL-python
+    import MySQLdb
+    from MySQLdb.cursors import DictCursor
+except ImportError:
+    try:
+        # PyMySQL
+        import pymysql as MySQLdb
+        from pymysql.cursors import DictCursor
+    except ImportError:
+        print "Please install MySQLdb(MySQL-python) or PyMySQL"
+        sys.exit(1)
+
+
+def connect(conf='~/.my.cnf', section='DEFAULT'):
+    """
+    connect to MySQL from conf file.
+    """
+    parser = SafeConfigParser()
+    parser.read([os.path.expanduser(conf)])
+
+    args = {}
+
+    if parser.has_option(section, 'socket'):
+        args['unix_socket'] = parser.get(section, 'socket')
+    else:
+        args['host'] = parser.get(section, 'host')
+        if parser.has_option(section, 'port'):
+            args['port'] = int(parser.get(section, 'port'))
+    args['user'] = parser.get(section, 'user')
+    args['passwd'] = parser.get(section, 'password')
+    args['charset'] = 'utf8'
+    return MySQLdb.connect(**args)
+
+
+def variables(con):
+    cur = con.cursor(DictCursor)
+    cur.execute("show global variables")
+    for row in cur.fetchall():
+        if row['Variable_name'] is None:
+            continue
+        if row['Value'] is None:
+            continue
+        yield row
+
+
+def build_option_parser():
+    parser = OptionParser()
+    parser.add_option(
+        '-c', '--config',
+        help="read MySQL configuration from. (default: '~/.my.cnf'",
+        default='~/.my.cnf'
+    )
+    parser.add_option(
+        '-s', '--section',
+        help="read MySQL configuration from this section. (default: '[DEFAULT]')",
+        default="DEFAULT"
+    )
+    parser.add_option(
+        '--out',
+        help="json filename (if file already exists, automaticaly rotate) (default: 'myvardump.json')",
+        default="myvardump.json"
+    )
+    return parser
+
+
+def main():
+    parser = build_option_parser()
+    opts, args = parser.parse_args()
+
+    try:
+        con = connect(opts.config, opts.section)
+    except Exception, e:
+        parser.error(e)
+
+    values = dict()
+    for variable in variables(con):
+        values.update({variable['Variable_name']: variable['Value']})
+    con.close()
+
+    if os.path.exists(opts.out):
+        src = opts.out
+        dst = "%s.%s" % (opts.out, time.strftime('%Y%m%d_%H%M%S', time.localtime()))
+        os.rename(src, dst)
+
+    out = json.dumps(values, sort_keys=True, indent=2)
+    f = open(opts.out, mode='w')
+    f.write(out)
+    f.close()
+
+if __name__ == '__main__':
+    main()