forked from TrueCloudLab/s3-tests
a1e5c50dc6
Adds the rand_readwrite utility. Updates realistic.py with a file verifier class. Updates generate_objects.py to allow the filename seed to be set.
140 lines
5 KiB
Python
Executable file
140 lines
5 KiB
Python
Executable file
#! /usr/bin/python
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from boto.s3.connection import OrdinaryCallingFormat
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from boto.s3.connection import S3Connection
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from boto.s3.key import Key
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from optparse import OptionParser
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from realistic import RandomContentFile
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import realistic
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import traceback
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import random
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import common
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import yaml
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import boto
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import sys
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def parse_opts():
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parser = OptionParser();
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parser.add_option('-O' , '--outfile', help='write output to FILE. Defaults to STDOUT', metavar='FILE')
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parser.add_option('-a' , '--access-key', dest='access_key', help='use S3 access key KEY', metavar='KEY')
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parser.add_option('-s' , '--secret-key', dest='secret_key', help='use S3 secret key KEY', metavar='KEY')
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parser.add_option('-b' , '--bucket', dest='bucket', help='push objects to BUCKET', metavar='BUCKET')
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parser.add_option('--checksum', dest='checksum', action='store_true', help='include the md5 checksum with the object urls')
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parser.add_option('--host', dest='host', help='use S3 gateway at HOST', metavar='HOST')
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parser.add_option('--seed', dest='seed', help='optional seed for the random number generator')
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return parser.parse_args()
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def connect_s3(host, access_key, secret_key):
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conn = S3Connection(
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calling_format = OrdinaryCallingFormat(),
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is_secure = False,
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host = host,
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aws_access_key_id = access_key,
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aws_secret_access_key = secret_key)
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return conn
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def generate_objects(bucket, quantity, mean, stddev, seed, checksum=False, name_seed=None):
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"""Generate random objects with sizes across a normal distribution
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specified by mean and standard deviation and write them to bucket.
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IN:
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boto S3 bucket object
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Number of files
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mean file size in bytes
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standard deviation from mean file size
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seed for RNG
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flag to tell the method to append md5 checksums to the output
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seed to use for the file names. defaults to use the other seed
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OUT:
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list of urls (strings) to objects valid for 1 hour.
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If "checksum" is true, each output string consists of the url
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followed by the md5 checksum.
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"""
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if name_seed == None:
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name_seed = seed
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urls = []
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file_generator = realistic.files(mean, stddev, seed)
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name_generator = realistic.names(15, 4,seed=name_seed)
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for _ in xrange(quantity):
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fp = file_generator.next()
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print >> sys.stderr, 'sending file with size %dB' % fp.size
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key = Key(bucket)
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key.key = name_generator.next()
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key.set_contents_from_file(fp)
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url = key.generate_url(30758400) #valid for 1 year
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if checksum:
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url += ' %s' % key.md5
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urls.append(url)
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return urls
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def main():
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'''To run the static content load test, make sure you've bootstrapped your
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test environment and set up your config.yml file, then run the following:
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S3TEST_CONF=config.yml virtualenv/bin/python generate_objects.py -a S3_ACCESS_KEY -s S3_SECRET_KEY -O urls.txt --seed 1234 && siege -rc ./siege.conf -r 5
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This creates a bucket with your S3 credentials and fills it with
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garbage objects as described in generate_objects.conf. It writes a
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list of URLS to those objects to ./urls.txt. siege then reads the
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./siege.conf config file which tells it to read from ./urls.txt and
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log to ./siege.log and hammers each url in urls.txt 5 times (-r flag).
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Results are printed to the terminal and written in CSV format to
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./siege.log
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S3 credentials and output file may also be specified in config.yml
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under s3.main and file_generation.url_file
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'''
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(options, args) = parse_opts();
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#SETUP
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random.seed(options.seed if options.seed else None)
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if options.outfile:
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OUTFILE = open(options.outfile, 'w')
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elif common.config.file_generation.url_file:
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OUTFILE = open(common.config.file_generation.url_file, 'w')
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else:
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OUTFILE = sys.stdout
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if options.access_key and options.secret_key:
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host = options.host if options.host else common.config.s3.defaults.host
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conn = connect_s3(host, options.access_key, options.secret_key)
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else:
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conn = common.s3.main
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if options.bucket:
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bucket = get_bucket(conn, options.bucket)
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else:
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bucket = common.get_new_bucket()
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urls = []
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print >> OUTFILE, 'bucket: %s' % bucket.name
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print >> sys.stderr, 'setup complete, generating files'
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for profile in common.config.file_generation.groups:
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seed = random.random()
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urls += generate_objects(bucket, profile[0], profile[1], profile[2], seed, options.checksum)
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print >> sys.stderr, 'finished sending files. generating urls and sending to S3'
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url_string = '\n'.join(urls)
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url_key = Key(bucket)
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url_key.key = 'urls'
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url_key.set_contents_from_string(url_string)
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print >> OUTFILE, url_string
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print >> sys.stderr, 'done'
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if __name__ == '__main__':
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common.setup()
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try:
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main()
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except Exception as e:
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traceback.print_exc()
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common.teardown()
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