python编写api调用ceph对象网
发布时间：2019-09-17 07:48:15编辑：auto阅读（1689）
#_*_coding:utf-8_*_
#yum install python-boto
import boto
import boto.s3.connection
#pip install filechunkio
from filechunkio import FileChunkIO
import math
import threading
import os
import Queue
class Chunk(object):
num = 0
offset = 0
len = 0
def __init__(self,n,o,l):
self.num=n
self.offset=o
self.length=l
class CONNECTION(object):
def __init__(self,access_key,secret_key,ip,port,is_secure=False,chrunksize=8<<20): #chunksize最小8M否则上传过程会报错
self.conn=boto.connect_s3(
aws_access_key_id=access_key,
aws_secret_access_key=secret_key,
host=ip,port=port,
is_secure=is_secure,
calling_format=boto.s3.connection.OrdinaryCallingFormat()
)
self.chrunksize=chrunksize
self.port=port
#查询
def list_all(self):
all_buckets=self.conn.get_all_buckets()
for bucket in all_buckets:
print u'容器名: %s' %(bucket.name)
for key in bucket.list():
print ' '*5,"%-20s%-20s%-20s%-40s%-20s" %(key.mode,key.owner.id,key.size,key.last_modified.split('.')[0],key.name)
def list_single(self,bucket_name):
try:
single_bucket = self.conn.get_bucket(bucket_name)
except Exception as e:
print 'bucket %s is not exist' %bucket_name
return
print u'容器名: %s' % (single_bucket.name)
for key in single_bucket.list():
print ' ' * 5, "%-20s%-20s%-20s%-40s%-20s" % (key.mode, key.owner.id, key.size, key.last_modified.split('.')[0], key.name)
#普通小文件下载：文件大小<=8M
def dowload_file(self,filepath,key_name,bucket_name):
all_bucket_name_list = [i.name for i in self.conn.get_all_buckets()]
if bucket_name not in all_bucket_name_list:
print 'Bucket %s is not exist,please try again' % (bucket_name)
return
else:
bucket = self.conn.get_bucket(bucket_name)
all_key_name_list = [i.name for i in bucket.get_all_keys()]
if key_name not in all_key_name_list:
print 'File %s is not exist,please try again' % (key_name)
return
else:
key = bucket.get_key(key_name)
if not os.path.exists(os.path.dirname(filepath)):
print 'Filepath %s is not exists, sure to create and try again' % (filepath)
return
if os.path.exists(filepath):
while True:
d_tag = raw_input('File %s already exists, sure you want to cover (Y/N)?' % (key_name)).strip()
if d_tag not in ['Y', 'N'] or len(d_tag) == 0:
continue
elif d_tag == 'Y':
os.remove(filepath)
break
elif d_tag == 'N':
return
os.mknod(filepath)
try:
key.get_contents_to_filename(filepath)
except Exception:
pass
# 普通小文件上传：文件大小<=8M
def upload_file(self,filepath,key_name,bucket_name):
try:
bucket = self.conn.get_bucket(bucket_name)
except Exception as e:
print 'bucket %s is not exist' % bucket_name
tag = raw_input('Do you want to create the bucket %s: (Y/N)?' % bucket_name).strip()
while tag not in ['Y', 'N']:
tag = raw_input('Please input (Y/N)').strip()
if tag == 'N':
return
elif tag == 'Y':
self.conn.create_bucket(bucket_name)
bucket = self.conn.get_bucket(bucket_name)
all_key_name_list = [i.name for i in bucket.get_all_keys()]
if key_name in all_key_name_list:
while True:
f_tag = raw_input(u'File already exists, sure you want to cover (Y/N)?: ').strip()
if f_tag not in ['Y', 'N'] or len(f_tag) == 0:
continue
elif f_tag == 'Y':
break
elif f_tag == 'N':
return
key=bucket.new_key(key_name)
if not os.path.exists(filepath):
print 'File %s does not exist, please make sure you want to upload file path and try again' %(key_name)
return
try:
f=file(filepath,'rb')
data=f.read()
key.set_contents_from_string(data)
except Exception:
pass
def delete_file(self,key_name,bucket_name):
all_bucket_name_list = [i.name for i in self.conn.get_all_buckets()]
if bucket_name not in all_bucket_name_list:
print 'Bucket %s is not exist,please try again' % (bucket_name)
return
else:
bucket = self.conn.get_bucket(bucket_name)
all_key_name_list = [i.name for i in bucket.get_all_keys()]
if key_name not in all_key_name_list:
print 'File %s is not exist,please try again' % (key_name)
return
else:
key = bucket.get_key(key_name)
try:
bucket.delete_key(key.name)
except Exception:
pass
def delete_bucket(self,bucket_name):
all_bucket_name_list = [i.name for i in self.conn.get_all_buckets()]
if bucket_name not in all_bucket_name_list:
print 'Bucket %s is not exist,please try again' % (bucket_name)
return
else:
bucket = self.conn.get_bucket(bucket_name)
try:
self.conn.delete_bucket(bucket.name)
except Exception:
pass
#队列生成
def init_queue(self,filesize,chunksize): #8<<20 :8*2**20
chunkcnt=int(math.ceil(filesize*1.0/chunksize))
q=Queue.Queue(maxsize=chunkcnt)
for i in range(0,chunkcnt):
offset=chunksize*i
length=min(chunksize,filesize-offset)
c=Chunk(i+1,offset,length)
q.put(c)
return q
#分片上传object
def upload_trunk(self,filepath,mp,q,id):
while not q.empty():
chunk=q.get()
fp=FileChunkIO(filepath,'r',offset=chunk.offset,bytes=chunk.length)
mp.upload_part_from_file(fp,part_num=chunk.num)
fp.close()
q.task_done()
#文件大小获取---->S3分片上传对象生成----->初始队列生成(--------------->文件切，生成切分对象)
def upload_file_multipart(self,filepath,key_name,bucket_name,threadcnt=8):
filesize=os.stat(filepath).st_size
try:
bucket=self.conn.get_bucket(bucket_name)
except Exception as e:
print 'bucket %s is not exist' % bucket_name
tag=raw_input('Do you want to create the bucket %s: (Y/N)?' %bucket_name).strip()
while tag not in ['Y','N']:
tag=raw_input('Please input (Y/N)').strip()
if tag == 'N':
return
elif tag == 'Y':
self.conn.create_bucket(bucket_name)
bucket = self.conn.get_bucket(bucket_name)
all_key_name_list=[i.name for i in bucket.get_all_keys()]
if key_name in all_key_name_list:
while True:
f_tag=raw_input(u'File already exists, sure you want to cover (Y/N)?: ').strip()
if f_tag not in ['Y','N'] or len(f_tag) == 0:
continue
elif f_tag == 'Y':
break
elif f_tag == 'N':
return
mp=bucket.initiate_multipart_upload(key_name)
q=self.init_queue(filesize,self.chrunksize)
for i in range(0,threadcnt):
t=threading.Thread(target=self.upload_trunk,args=(filepath,mp,q,i))
t.setDaemon(True)
t.start()
q.join()
mp.complete_upload()
#文件分片下载
def download_chrunk(self,filepath,key_name,bucket_name,q,id):
while not q.empty():
chrunk=q.get()
offset=chrunk.offset
length=chrunk.length
bucket=self.conn.get_bucket(bucket_name)
resp=bucket.connection.make_request('GET',bucket_name,key_name,headers={'Range':"bytes=%d-%d" %(offset,offset+length)})
data=resp.read(length)
fp=FileChunkIO(filepath,'r+',offset=chrunk.offset,bytes=chrunk.length)
fp.write(data)
fp.close()
q.task_done()
def download_file_multipart(self,filepath,key_name,bucket_name,threadcnt=8):
all_bucket_name_list=[i.name for i in self.conn.get_all_buckets()]
if bucket_name not in all_bucket_name_list:
print 'Bucket %s is not exist,please try again' %(bucket_name)
return
else:
bucket=self.conn.get_bucket(bucket_name)
all_key_name_list = [i.name for i in bucket.get_all_keys()]
if key_name not in all_key_name_list:
print 'File %s is not exist,please try again' %(key_name)
return
else:
key=bucket.get_key(key_name)
if not os.path.exists(os.path.dirname(filepath)):
print 'Filepath %s is not exists, sure to create and try again' % (filepath)
return
if os.path.exists(filepath):
while True:
d_tag = raw_input('File %s already exists, sure you want to cover (Y/N)?' % (key_name)).strip()
if d_tag not in ['Y', 'N'] or len(d_tag) == 0:
continue
elif d_tag == 'Y':
os.remove(filepath)
break
elif d_tag == 'N':
return
os.mknod(filepath)
filesize=key.size
q=self.init_queue(filesize,self.chrunksize)
for i in range(0,threadcnt):
t=threading.Thread(target=self.download_chrunk,args=(filepath,key_name,bucket_name,q,i))
t.setDaemon(True)
t.start()
q.join()
def generate_object_download_urls(self,key_name,bucket_name,valid_time=0):
all_bucket_name_list = [i.name for i in self.conn.get_all_buckets()]
if bucket_name not in all_bucket_name_list:
print 'Bucket %s is not exist,please try again' % (bucket_name)
return
else:
bucket = self.conn.get_bucket(bucket_name)
all_key_name_list = [i.name for i in bucket.get_all_keys()]
if key_name not in all_key_name_list:
print 'File %s is not exist,please try again' % (key_name)
return
else:
key = bucket.get_key(key_name)
try:
key.set_canned_acl('public-read')
download_url = key.generate_url(valid_time, query_auth=False, force_http=True)
if self.port != 80:
x1=download_url.split('/')[0:3]
x2=download_url.split('/')[3:]
s1=u'/'.join(x1)
s2=u'/'.join(x2)
s3=':%s/' %(str(self.port))
download_url=s1+s3+s2
print download_url
except Exception:
pass
if __name__ == '__main__':
#约定：
#1:filepath指本地文件的路径(上传路径or下载路径),指的是绝对路径
#2:bucket_name相当于文件在对象存储中的目录名或者索引名
#3:key_name相当于文件在对象存储中对应的文件名或文件索引
access_key = "65IY4EC1BSFYNH6SHWGW"
secret_key = "viNfIftLHhrPt2MYK44DkWGvxZb82aYqLrCzGYLx"
ip='172.16.201.36'
port=8080
conn=CONNECTION(access_key,secret_key,ip,port)
#查看所有bucket以及其包含的文件
#conn.list_all()
#简单上传,用于文件大小<=8M
# conn.upload_file('/etc/passwd','passwd','test_bucket01')
#查看单一bucket下所包含的文件信息
# conn.list_single('test_bucket01')
#简单下载,用于文件大小<=8M
# conn.dowload_file('/lhf_test/test01','passwd','test_bucket01')
# conn.list_single('test_bucket01')
#删除文件
# conn.delete_file('passwd','test_bucket01')
# conn.list_single('test_bucket01')
#
#删除bucket
# conn.delete_bucket('test_bucket01')
# conn.list_all()
#切片上传(多线程),用于文件大小>8M,8M可修改，但不能小于8M,否则会报错切片太小
# conn.upload_file_multipart('/etc/passwd','passwd_multi_upload','test_bucket01')
# conn.list_single('test_bucket01')
# 切片下载(多线程),用于文件大小>8M,8M可修改，但不能小于8M，否则会报错切片太小
# conn.download_file_multipart('/lhf_test/passwd_multi_dowload','passwd_multi_upload','test_bucket01')
#生成下载url
#conn.generate_object_download_urls('passwd_multi_upload','test_bucket01')
#conn.list_all()
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