def download(hdfs_path, local_path):
# 初始化HDFS连接
client = Client('http://fisher.lazybone.xyz:9001', root='/')
if os.path.exists(local_path):
print('文件已存在')
return
client.download(hdfs_path=hdfs_path, local_path=local_path)
def get_data():
client = Client("http://t3.dev:50070", "hadoop")
# client = InsecureClient(url="http://t3.dev:50070", user="******", root="/")
print(client.list("/huiqu/common/area.txt"))
with client.read("/huiqu/common/area.txt/part-00000") as read:
# print(read.read().decode('utf8'))
return {"data": read.read().decode('utf8')}
def save_to_storage(filename, sha1):
if args.no_save:
return False
from hdfs import Client
client = Client('http://{}:50070'.format(config.get("hdfs", "host")), root=config.get("reportparser", "storage"))
uploaded = client.upload(sha1, filename, overwrite=True)
return uploaded
def main():
client = Client("http://127.0.0.1:50070",
root="/",
timeout=100,
session=False)
#client.makedirs("/news")
client.upload("/input", "x.html")
print(client.list("/"))
def get(self, request):
client = Client(HDFS_HOST)
hdfs = request.GET.get('hdfs')
file_name = DataSource.objects.get(format_filename=hdfs).file_name
client.download('/datahoop/' + hdfs, settings.MEDIA_ROOT + 'hdfs_download')
path = os.path.join(settings.MEDIA_ROOT, 'hdfs_download')
file = open(os.path.join(path, hdfs), 'rb')
response = FileResponse(file)
response = HttpResponse(content_type='application/vnd.ms-csv')
response['Content-Disposition'] = 'attachment; filename={}.csv'.format(file_name.split('.')[0])
return (response)
class BiliaprioriPipeline(object):
def __init__(self):
self.client = Client("http://fantome:50070")
def process_item(self, item, spider):
print("Get Tag", " tag:", item['tagInfo'])
#持续写入
self.client.write('/bili_3-7day/tagInfo.txt',
item['tagInfo'] + "\n",
overwrite=False,
append=True,
encoding="utf-8")
def upload(name, file_path, config):
env_prefix = config.get("prefix", None)
hdfs_client = Client(url=config["hdfs"]["name_node"])
hdfs_hosts = []
hdfs_http_host = config["hdfs"]["name_node"]
hdfs_hosts.append(hdfs_http_host.replace("http://", ""))
hdfs_data_service_root = "/data_service"
if env_prefix is not None:
hdfs_data_service_root = "/{0}_data_service".format(env_prefix)
hdfs_client.makedirs(hdfs_data_service_root)
timestamp = int(round(time.time() * 1000))
target_file_name = "{2}/{0}/{1}/{0}_{1}.py".format(
name, str(timestamp), hdfs_data_service_root)
hdfs_client.makedirs("{2}/{0}/{1}".format(name, str(timestamp),
hdfs_data_service_root))
print("hdfs file name: {0}".format(target_file_name))
hdfs_client.upload(target_file_name, file_path)
zip_path = os.path.join(
os.path.dirname(os.path.dirname(os.path.dirname(__file__))),
"joowing.zip")
target_zp_file_name = "{2}/{0}/{1}/joowing.zip".format(
name, str(timestamp), hdfs_data_service_root)
# hdfs_client.upload(target_zp_file_name, zip_path)
# return target_file_name, target_zp_file_name
return target_file_name
def __init__(self, **kwargs):
self.table_cols_map = {} # 表字段顺序 {table：(cols, col_default)}
self.bizdate = bizdate # 业务日期为启动爬虫的日期
self.buckets_map = {} # 桶 {table：items}
self.bucketsize = kwargs.get('BUCKETSIZE')
self.client = Client(kwargs.get('HDFS_URLS'))
self.dir = kwargs.get('HDFS_FOLDER') # 文件夹路径
self.delimiter = kwargs.get('HDFS_DELIMITER') # 列分隔符,默认 hive默认分隔符
self.encoding = kwargs.get('HDFS_ENCODING') # 文件编码，默认 'utf-8'
self.hive_host = kwargs.get('HIVE_HOST')
self.hive_port = kwargs.get('HIVE_PORT')
self.hive_dbname = kwargs.get('HIVE_DBNAME') # 数据库名称
self.hive_auto_create = kwargs.get('HIVE_AUTO_CREATE',
False) # hive 是否自动建表，默认 False
self.client.makedirs(self.dir)
def __init__(self, config, expiration=30000):
def get_token(username, password, expiration):
###
# input_type: str, str, int
# input: the username of PAI, the password of PAI and the expiration time of the token
# output_type: str
# output: token
# Get the token from rest server API
###
token_ready = False
loop_count = 0
while not token_ready:
time.sleep(loop_count)
loop_count += 1
http_object = self.http.request(
'POST',
self.rest_server_url + 'token',
headers={
'Content-Type': 'application/x-www-form-urlencoded',
},
body='username='******'&password='******'&expiration=' + str(expiration))
if http_object.status == 200:
token_ready = True
return json.loads(
http_object.data.decode('utf-8'))['token']
else:
print(http_object.status, http_object.data)
self.rest_server_url = config.rest_server_url # rest server url
self.http = urllib3.PoolManager() # urllib3 http
self.token = get_token(config.PAI_username, config.PAI_password,
expiration) # rest Server token
self.hdfs_client = Client(config.webhdfs_url) # hdfs web url
def reflect(self, reload_flag = False):
if not self.ds_dict:
si_app.logger.error('error: ds_dict must be provided.')
return
if reload_flag:
si_app.delete_doc_from_index_by_datasource(ds_name=self.ds_dict['ds_name'])
tclient = Client( self.ds_dict['ds_param']['hdfs_web_url']) # self.ds_dict['ds_url'])
path_hdfs = self.ds_dict['ds_param']['root_path'] # self.ds_dict['table_group_name']
if path_hdfs[-1] == '/':
# remove trailing '/' for concatenating more path
path_hdfs = path_hdfs[:-1] # remove the trailing '/'
filelist = self.getHDFSFileInfo(tclient, path_hdfs)
for fd in filelist:
si_app.add_table_content_index(ds_name = self.ds_dict['ds_name'],
table_id=fd['table_name'],
table_info=(json.dumps(fd) ),
table_content_index = ' '.join([fd[k] for k in fd.keys() ])
)
def generate_job_and_outputtable(schedules_list):
job_list = []
outtable_list = []
client = Client("http://emr2-header-1.ipa.aidigger.com:50070", timeout=30)
for work_id, schedule_id, cron_type in schedules_list:
schedule_url = "https://pony.aidigger.com/api/v1/schedules/{}".format(
schedule_id)
job_infos = requests.get(schedule_url).json()["data"]
time.sleep(1)
owner = job_infos["owner"]
print("schedule_url: " + schedule_url)
for job_info in job_infos["execute_DAG"]:
try:
if job_info.get("job_info") \
and job_info["job_info"]["configs"].get("command","") \
and job_info["job_info"]["configs"]["command"].startswith("data_pipeline") : #or job_info["job_info"]["configs"]["command"].startswith("data_connector")
config = job_info["job_info"]["configs"]
if "args" in config.keys():
config['args']["isstreaming"] = str(
config['args']["isStreaming"] if "isStreaming" in
config['args'].keys(
) else config['args']["isstreaming"])
config['args'].get("spark_conf", {}).get(
"dependency", {}).pop("data_pipeline", None)
config['args'].pop("KafkaCheckpoint", None)
job_list.append(
(work_id, config["job_id"], job_info["name"],
job_info["job_info"]["configs"]["command"], "1G",
"0.3", owner, cron_type))
for output in config["output"]:
outtable_list.append(deepcopy(output))
dayu_fullnames = output["dayu_fullname"].split(":")
if not dayu_fullnames:
raise Exception("error!!")
if dayu_fullnames[0].lower() == "hive":
dayu_fullnames[1] = "dayu_temp"
output["dayu_full_name"] = ":".join(
dayu_fullnames) + "_k8spre"
elif dayu_fullnames[0].lower().startswith("oss"):
output["dayu_full_name"] = output[
"dayu_fullname"][:-1] + "_k8spre/"
elif dayu_fullnames[0].lower().startswith("kafka"):
output["dayu_full_name"] = output[
"dayu_fullname"] + "_k8spre"
output["dayu_full_name"] = output[
"dayu_full_name"].replace(".", "_")
else:
output["dayu_full_name"] = output[
"dayu_fullname"] + "_k8spre"
output.pop("dayu_id")
content = json.dumps(config).encode(encoding='utf-8')
client.write("/tmp/ting.wu/k8s_press/{}.json".format(
config["job_id"]),
overwrite=True,
data=content)
print(" hdfs: /tmp/ting.wu/k8s_press/{}.json".format(
config["job_id"]))
except Exception as err:
print(err)
return job_list, outtable_list
def __init__(self, spark, config, generator):
super(DataContext, self).__init__()
self.spark = spark
self.config = config
self.generator = generator
self.env_prefix = config.get("prefix", None)
self.hdfs_client = Client(url=";".join(config["hdfs"]["name_node"]),
proxy="joowing")
def from_settings(cls, settings):
hdfs_master = settings['HDFS_MASTER']
hdfs_address = settings['HDFS_ADDRESS']
try:
client = Client('http://' + str(hdfs_master) + ':' +
str(hdfs_address))
except Exception as e:
print(e)
return cls(client)
def connect_and_login(self, **kwargs):
import requests
host = None
port = None
user = None
password = None
root = None
timeout = None
proxy = None
if 'host' in kwargs:
host = kwargs['host']
if 'port' in kwargs:
port = kwargs['port']
if 'kdc' in kwargs:
kdc = kwargs['kdc']
if 'user' in kwargs:
user = kwargs['user']
if 'password' in kwargs:
password = kwargs['password']
if 'root' in kwargs:
root = kwargs['root']
if 'proxy' in kwargs:
proxy = kwargs['proxy']
if 'timeout' in kwargs:
timeout = kwargs['timeout']
self.session = requests.Session()
adapter = requests.adapters.HTTPAdapter(pool_maxsize=0)
self.session.mount('http://', adapter)
self.session.mount('https://', adapter)
self.session.headers.update({'Connection':'Keep-Alive'})
self.connectionStatus = False
try:
timeout = int(timeout)
url = "http://" + host + ":" + str(port)
hdfsLogin = WebHDFS(url, kdc)
cookieStr = hdfsLogin.authenticate(user, password)
if cookieStr != None:
cookieList = cookieStr.split('=', 1)
cookieDict = {cookieList[0]: cookieList[1]}
requests.utils.add_dict_to_cookiejar(self.session.cookies, cookieDict)
self.client = Client(url, root=root, proxy=proxy, timeout=timeout, session=self.session)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
self.connectionStatus = True
return self.client
def __init__(self, config: dict = None, file: str = 'openpai.json'):
"""config should contain
- rest_server_socket
- hdfs_web_socket
- user
- password
"""
if config is None:
with open(file) as fn:
config = json.load(fn)
for key in [
'rest_server_socket', 'hdfs_web_socket', 'user', 'password'
]:
assert key in config, '%s is not defined for OpenPAI' % (key)
for key in ['rest_server_socket', 'hdfs_web_socket']:
assert config[key].startswith(
'http://'), '%s should have http prefix' % (key)
self.rest_server_socket = config['rest_server_socket']
self.hdfs_client = Client(config['hdfs_web_socket'])
self.config = config
class HdfsClient:
"""基于hdfs library实现的hdfs客户端
"""
def __init__(self, host, port=50070):
self.url = "http://%s:%d" % (host, port)
self.client = Client(url=self.url)
def isExists(self, hdfs_path):
try:
status = self.client.acl_status(hdfs_path, strict=False)
if status != None:
info = "file or directory %s is existed." % hdfs_path
return (0, info)
else:
info = "file or directory %s not existed." % hdfs_path
return (1, info)
except Exception, e:
info = "HDFS isExists:{}".format(str(e))
return (2, info)
def __init__(self, config, expiration=30000):
def get_token(username, password, expiration):
###
# input_type: str, str, int
# input: the username of PAI, the password of PAI and the expiration time of the token
# output_type: str
# output: token
# Get the token from rest server API
###
rest_server_url_without_namespace = '/'.join(
self.rest_server_url.split('/')[:-3]) + '/'
token_ready = False
loop_count = 0
while not token_ready:
time.sleep(loop_count)
loop_count += 1
http_object = self.http.request(
'POST',
rest_server_url_without_namespace + 'token',
headers={
'Content-Type': 'application/json',
},
body=json.dumps({
'username': username,
'password': password,
'expiration': str(expiration)
}))
if http_object.status == 200:
token_ready = True
return json.loads(
http_object.data.decode('utf-8'))['token']
else:
print(http_object.status, http_object.data)
self.rest_server_url = config.rest_server_url # rest server url
self.http = urllib3.PoolManager() # urllib3 http
self.token = get_token(config.PAI_username, config.PAI_password,
expiration) # rest Server token
self.hdfs_client = Client(config.webhdfs_url) # hdfs web url
def get(self, request, *args, **kwargs):
table_name = request.data.get('name')
username = request.session['username']
password = request.session['password']
host = request.session['host']
port = request.session['port']
database_name = request.session['dbdatabase_name']
obj = DataSource.objects
conn = pymssql.connect(database=database_name, user=username, password=password, host=host, port=port)
client = Client(HDFS_HOST)
cur = conn.cursor()
for i in table_name:
global rels
cur.execute("select name from syscolumns where id = object_id('%s');" % (i))
rels = []
rel = []
rows = cur.fetchall()
for i in rows:
for item in i:
rel.append(item)
rels.append(rel)
# 类似于其他语言的 query 函数， execute 是 python 中的执行查询函数
cur.execute("SELECT * FROM %s" % (i))
# 使用 fetchall 函数，将结果集（多维元组）存入 rows 里面
rows1 = cur.fetchall()
# 依次遍历结果集，发现每个元素，就是表中的一条记录，用一个元组来显示
for row in rows1:
rels.append(list(row))
file_name = i + '.sql'
format_name = uuid.uuid1()
filepath = settings.MEDIA_ROOT + format_name
with open(filepath, 'wb+') as writer:
for chunk in rels:
writer.write(chunk)
client.upload("/datahoop", filepath)
obj.create(file_name=file_name, format_name=format_name, user_id=1)
os.remove(filepath)
client.close()
cur.close()
conn.close()
return HttpResponse(json.dumps(rels), content_type='application/json')
def delete(self, request, *args, **kwargs):
file_id = request.data.get('file_id')
where = DataSource.objects.get(id=file_id).where
if where == 'hdfs':
file = DataSource.objects.get(id=file_id)
hdfs_name = DataSource.objects.get(id=file_id).format_filename
client = Client(HDFS_HOST)
client.delete('/datahoop/' + hdfs_name, recursive=True)
file.delete()
else:
client = pymongo.MongoClient(settings.MONGO_DB_HOST, settings.MONGO_DB_PORT)
db = client.datahoop.data
file_id = DataSource.objects.filter(id=id).first()
obj_id = file_id.obj_id
file_id.delete()
db.remove({"_id": ObjectId(obj_id)})
client.close()
return HttpResponse(content_type='application/json')
def get(self, request, *args, **kwargs):
# table_name = request.data.get('name')
table_name = 'files_datasource'
username = request.session['username']
password = request.session['password']
host = request.session['host']
port = request.session['port']
database_name = request.session['database_name']
obj = DataSource.objects
con = pymysql.connect(host, username, password, database_name)
client = Client(HDFS_HOST)
cur = con.cursor()
# for i in table_name:
sql = "select DISTINCT (COLUMN_NAME) from information_schema.COLUMNS where table_name = '%s'"
cur.execute(sql % (table_name))
rows = cur.fetchall()
rels = []
rel = []
for i in rows:
rel.append(i[0])
rels.append(rel) # 类似于其他语言的 query 函数， execute 是 python 中的执行查询函数
cur.execute("SELECT * FROM %s" % (table_name)) # 使用 fetchall 函数，将结果集（多维元组）存入 rows 里面
rows = cur.fetchall() # 依次遍历结果集，发现每个元素，就是表中的一条记录，用一个元组来显示
for row in rows:
rels.append(list(row))
file_name = table_name + '.sql'
format_name = uuid.uuid1()
filepath = settings.MEDIA_ROOT + str(format_name)
with open(filepath, 'wb+') as writer:
for chunk in rels:
writer.write(chunk)
client.upload("/datahoop", filepath)
obj.create(file_name=file_name, format_name=format_name, user_id=1)
os.remove(filepath)
client.close()
con.close()
cur.close()
return HttpResponse(json.dumps(rels), content_type='application/json')
def get(self, request): # delete mydata
file_id = request.GET.get('file_id')
try:
where = DataSource.objects.get(id=file_id).where
print(DataSource.objects.get(id=file_id))
print(where)
format_filename = DataSource.objects.get(
id=file_id).format_filename
format_name_count = DataSource.objects.filter(
format_filename=format_filename).count()
if where == 'hdfs' and format_name_count == 1:
file = DataSource.objects.get(id=file_id)
hdfs_name = DataSource.objects.get(id=file_id).format_filename
client = Client(HDFS_HOST)
client.delete('/datahoop/' + hdfs_name, recursive=True)
file.delete()
item = Collect.objects.filter(file_id=file_id)
if item:
item.delete()
elif where == 'hdfs' and format_name_count > 1:
file = DataSource.objects.get(id=file_id)
file.delete()
item = Collect.objects.filter(file_id=file_id)
if item:
item.delete()
else:
client = pymongo.MongoClient(settings.MONGO_DB_URI)
db = client.datahoop.data
data_obj = DataSource.objects.filter(id=file_id).first()
obj_id = data_obj.obj_id
data_obj.delete()
db.remove({"_id": ObjectId(obj_id)})
client.close()
item = Collect.objects.filter(file_id=file_id)
if item:
item.delete()
return JsonResponse({'status': True})
except:
return JsonResponse({'status': False})
def build_connection(self):
self.client = Client(self.hadoop_url)
from hdfs import Client
client = Client("http://master:9870")
#client.makedirs("/abc/xyz")
x = client.list("/")
y = client.list("/", status=True)
class HdfsPipeline(object):
def __init__(self, **kwargs):
self.table_cols_map = {} # 表字段顺序 {table：(cols, col_default)}
self.bizdate = bizdate # 业务日期为启动爬虫的日期
self.buckets_map = {} # 桶 {table：items}
self.bucketsize = kwargs.get('BUCKETSIZE')
self.client = Client(kwargs.get('HDFS_URLS'))
self.dir = kwargs.get('HDFS_FOLDER') # 文件夹路径
self.delimiter = kwargs.get('HDFS_DELIMITER') # 列分隔符,默认 hive默认分隔符
self.encoding = kwargs.get('HDFS_ENCODING') # 文件编码，默认 'utf-8'
self.hive_host = kwargs.get('HIVE_HOST')
self.hive_port = kwargs.get('HIVE_PORT')
self.hive_dbname = kwargs.get('HIVE_DBNAME') # 数据库名称
self.hive_auto_create = kwargs.get('HIVE_AUTO_CREATE',
False) # hive 是否自动建表，默认 False
self.client.makedirs(self.dir)
@classmethod
def from_crawler(cls, crawler):
settings = crawler.settings
return cls(**settings)
def process_item(self, item, spider):
"""
:param item:
:param spider:
:return: 数据分表入库
"""
if item.tablename in self.buckets_map:
self.buckets_map[item.tablename].append(item)
else:
cols, col_default = [], {}
for field, value in item.fields.items():
cols.append(field)
col_default[field] = item.fields[field].get('default', '')
cols.sort(key=lambda x: item.fields[x].get('idx', 1))
self.table_cols_map.setdefault(
item.tablename, (cols, col_default)) # 定义表结构、字段顺序、默认值
self.buckets_map.setdefault(item.tablename, [item])
if self.hive_auto_create:
self.checktable(item.tablename, cols) # 建表
self.buckets2db(bucketsize=self.bucketsize,
spider_name=spider.name) # 将满足条件的桶 入库
return item
def close_spider(self, spider):
"""
:param spider:
:return: 爬虫结束时，将桶里面剩下的数据 入库
"""
self.buckets2db(bucketsize=1, spider_name=spider.name)
def checktable(self, tbname, cols):
"""
:return: 创建 hive 表
"""
hive = CtrlHive(self.hive_host, self.hive_port, self.hive_dbname)
cols = ['keyid'] + cols + ['bizdate', 'ctime', 'spider']
create_sql = f"create table if not exists {tbname}({' string,'.join(cols)} string)"
hive.execute(create_sql)
logger.info(f"表创建成功 <= 表名:{tbname}")
def buckets2db(self, bucketsize=100, spider_name=''):
"""
:param bucketsize: 桶大小
:param spider_name: 爬虫名字
:return: 遍历每个桶，将满足条件的桶，入库并清空桶
"""
for tablename, items in self.buckets_map.items(
): # 遍历每个桶，将满足条件的桶，入库并清空桶
if len(items) >= bucketsize:
new_items = []
cols, col_default = self.table_cols_map.get(tablename)
for item in items:
keyid = rowkey()
new_item = {'keyid': keyid}
for field in cols:
value = item.get(field, col_default.get(field))
new_item[field] = str(value).replace(
self.delimiter, '').replace('\n', '')
new_item['bizdate'] = self.bizdate # 增加非业务字段
new_item['ctime'] = time.strftime("%Y-%m-%d %H:%M:%S",
time.localtime())
new_item['spider'] = spider_name
value = self.delimiter.join(new_item.values())
new_items.append(value)
# 每张表是都是一个文件夹
folder = f"{self.dir}/{tablename}"
self.client.makedirs(folder)
filename = f"{folder}/data.txt"
info = self.client.status(filename, strict=False)
if not info:
self.client.write(filename,
data='',
overwrite=True,
encoding=self.encoding)
try:
content = '\n'.join(new_items) + '\n'
self.client.write(filename,
data=content,
overwrite=False,
append=True,
encoding=self.encoding)
logger.info(f"保存成功 <= 文件名:{filename} 记录数:{len(items)}")
items.clear() # 清空桶
except Exception as e:
logger.error(f"保存失败 <= 文件名:{filename} 错误原因:{e}")
#daoru
from hdfs import Client
client = Client("http://master:9870")
# client.makedirs("/abc/xyz")
x = client.list("/")
y = client.list("/", status=True)
print(y[1][0])
print(y[1][1]["accessTime"])
client.upload("/abc", "HDFSDao.py")
client.download("/abc/HDFSDao.py", "d:/ttt.py")
print("end___")
def __init__(self, host, port=50070):
self.url = "http://%s:%d" % (host, port)
self.client = Client(url=self.url)
class RF_HDFS(object):
def __init__(self):
self.client = None
self.directory = None
def connect_and_login(self, **kwargs):
import requests
host = None
port = None
user = None
password = None
root = None
timeout = None
proxy = None
if 'host' in kwargs:
host = kwargs['host']
if 'port' in kwargs:
port = kwargs['port']
if 'kdc' in kwargs:
kdc = kwargs['kdc']
if 'user' in kwargs:
user = kwargs['user']
if 'password' in kwargs:
password = kwargs['password']
if 'root' in kwargs:
root = kwargs['root']
if 'proxy' in kwargs:
proxy = kwargs['proxy']
if 'timeout' in kwargs:
timeout = kwargs['timeout']
self.session = requests.Session()
adapter = requests.adapters.HTTPAdapter(pool_maxsize=0)
self.session.mount('http://', adapter)
self.session.mount('https://', adapter)
self.session.headers.update({'Connection':'Keep-Alive'})
self.connectionStatus = False
try:
timeout = int(timeout)
url = "http://" + host + ":" + str(port)
hdfsLogin = WebHDFS(url, kdc)
cookieStr = hdfsLogin.authenticate(user, password)
if cookieStr != None:
cookieList = cookieStr.split('=', 1)
cookieDict = {cookieList[0]: cookieList[1]}
requests.utils.add_dict_to_cookiejar(self.session.cookies, cookieDict)
self.client = Client(url, root=root, proxy=proxy, timeout=timeout, session=self.session)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
self.connectionStatus = True
return self.client
def checkConnectionStatus(self):
return self.connectionStatus
def list_dir(self, directory):
output = []
try:
if directory != None:
output = self.client.list(directory, status=True)
else:
output = self.client.list(self.client.root, status=True)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
return output
def list_names(self, directory):
output = []
try:
if directory != None:
output = self.client.list(directory, status=False)
else:
output = self.client.list(self.client.root, status=False)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
return output
def upload(self, remote_path, local_path, overwrite=False, permission=None):
output = None
try:
output = self.client.upload(remote_path, local_path, overwrite, permission=permission)
except HdfsError as hdfsError:
# For some reason this exception includes the entire stack trace after
# the error message, so split on '\n' and only return the first line.
error = str(hdfsError).splitlines()[0]
raise HdfsLibraryError(error)
except Exception as exception:
raise HdfsLibraryError(str(exception))
return output
def download(self, remote_path, local_path, overwrite=False):
output = None
try:
output = self.client.download(remote_path, local_path, overwrite)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
return output
def mkdir(self, directory, permission):
try:
# no return value
self.client.makedirs(directory, permission=permission)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
def rmdir(self, directory):
try:
# no return value
if self.client.delete(directory, recursive=True) == False:
raise HdfsLibraryError("Directory does not exist: %r", directory)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
def rename(self, src_file, dst_file):
try:
# no return value
self.client.rename(src_file, dst_file)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
def delete(self, file):
try:
# no return value
if self.client.delete(file) == False:
raise HdfsLibraryError("File does not exist: %r", file)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
def set_time(self, file, mod_time):
try:
# no return value
self.client.set_times(file, -1, mod_time)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
def set_owner(self, file, owner, group):
try:
# no return value
self.client.set_owner(file, owner=owner, group=group)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
def set_permission(self, file, permission):
try:
# no return value
self.client.set_permission(file, permission=permission)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
def set_acl(self, file, aclspec):
try:
# no return value
self.client.set_acl(file, aclspec=aclspec)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
def status(self, path):
output = ''
try:
output = self.client.status(path)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
return output
def checksum(self, path):
output = ''
try:
output = self.client.checksum(path)
except HdfsError as hdfsError:
raise HdfsLibraryError(str(hdfsError))
except Exception as exception:
raise HdfsLibraryError(str(exception))
return output
def close(self):
self.session.close()
def __init__(self):
self.client = Client("http://fantome:50070")
import pandas as pd
import os
from hdfs import Client
# 目前读取hdfs文件采用方式：
# 1. 先从hdfs读取二进制数据流文件
# 2. 将二进制文件另存为.csv
# 3. 使用pandas读取csv文件
HDFSHOST = "http://172.16.18.112:50070"
train_path = "/9a7e7ef5a78f4f8388deff28cc5c2115/dataSet/devdatasetdef19761"
test_path = "/9a7e7ef5a78f4f8388deff28cc5c2115/dataSet/devdatasetdef19762"
train_FILENAME = train_path + "/data/Data.csv" #hdfs文件路径
test_FILENAME = test_path + "/data/Data.csv" #hdfs文件路径
client = Client(HDFSHOST)
with client.read(train_FILENAME) as tr_s:
tr_content = tr_s.read()
tr_s = str(tr_content, 'utf-8')
# 确保文件写入完毕
tr_file = open("trainData.csv", "w")
tr_file.flush()
os.fsync(tr_file)
tr_file.write(tr_s)
tr_file.close()
# 读取文件
df_train = pd.read_csv("trainData.csv", header=0)
print(df_train)
with client.read(test_FILENAME) as te_fs:
te_content = te_fs.read()
te_s = str(te_content, 'utf-8')
print(rowkey)
mutations = [Mutation(column=self.columnFamily + ":ipaddr", value=ipaddr), \
Mutation(column=self.columnFamily + ":visitTime", value=visitTime), \
Mutation(column=self.columnFamily + ":user_id", value=user_id), \
Mutation(column=self.columnFamily + ":link", value=link)
]
# 一次提交多行
mutations_batch.append(
BatchMutation(row=rowkey, mutations=mutations))
if len(mutations_batch) % batch_size == 0:
self.client.mutateRows(self.tablename, mutations_batch)
mutations_batch = []
if __name__ == "__main__":
# 建立hbase连接
hbasewriteer = CreateTableAndImportData('user_log_info', 'cf_log')
hbasewriteer.createTable()
# 连接HDFS
client = Client(HDFSNN)
# 获取文件列表
logFiles = client.list(LOGPATH)
# 读取文件
for logfile in logFiles:
with client.read(os.path.join(LOGPATH, logfile)) as deal_file_handle:
hbasewriteer.importData(deal_file_handle)
class ChatBotModel(object):
def __init__(self,
hadoop_url,
hdfs_index_file,
local_index_file,
corpus_dir,
unk_answer='',
max_answer_len=1024):
self.hadoop_url = hadoop_url
self.hdfs_index_file = hdfs_index_file
self.local_index_file = local_index_file
self.corpus_dir = corpus_dir
self.max_answer_len = max_answer_len
self.unk_answer = unk_answer
self.client = None
self.inverted_index = {}
def build_connection(self):
self.client = Client(self.hadoop_url)
def fetch_index_file(self):
self.client.download(hdfs_path=self.hdfs_index_file,
local_path=self.local_index_file,
overwrite=True)
def load_inverted_index(self):
with open(self.local_index_file, 'r', encoding='utf-8') as f:
for line in f:
word, *querys = line.strip().split('\t')
for query in querys:
file_name, query_id, score = query.split(':')
if word in self.inverted_index:
self.inverted_index[word].append(
[file_name, int(query_id),
float(score)])
else:
self.inverted_index[word] = []
self.inverted_index[word].append(
[file_name, int(query_id),
float(score)])
def prepare(self):
self.build_connection()
self.fetch_index_file()
self.load_inverted_index()
def read_corpus_answer(self, file_name, query_id):
file_path = os.path.join(self.corpus_dir, file_name)
file_status = self.client.status(file_path)
if file_status['length'] <= query_id:
return None
with self.client.read(hdfs_path=file_path,
offset=query_id,
length=self.max_answer_len,
encoding='utf-8') as f:
answer = f.read().strip().split('\n')[0]
return answer
def predict_answer(self, query):
words = jieba.lcut_for_search(query)
querys = {}
for word in words:
if word not in self.inverted_index:
continue
for file_name, query_id, score in self.inverted_index[word]:
query = (file_name, query_id)
if query in querys:
querys[query] += score
else:
querys[query] = score
if len(querys) == 0:
return self.unk_answer
best_query = max(querys.items(), key=lambda x: x[1])
(best_file_name, best_query_id), best_score = best_query
best_answer = self.read_corpus_answer(best_file_name, best_query_id)
if best_answer is None:
best_answer = self.unk_answer
return best_answer
def train(train_path,
test_path,
output_path,
target,
train_split_ratio=0.33,
penalty='l2',
dual=False,
tol=1e-4,
C=1.0,
random_state=None,
multi_class='ovr'):
# 设置起始时间
time.localtime()
time_trains_start = time.strftime('%Y{y}%m{m}%d{d} %H{h}%M{f}%S{s}'.format(
y='/', m='/', d='', h=':', f=':', s=''))
start_time = time.time()
# 设置输入文件路径
train_FILENAME = train_path + "/data/Data.csv" # hdfs文件路径
test_FILENAME = test_path + "/data/Data.csv" # hdfs文件路径
client = Client(HDFS_HOSTS1)
# 训练数据读取
with client.read(train_FILENAME) as tr_s:
tr_content = tr_s.read()
tr_s = str(tr_content, 'utf-8')
# 确保文件写入完毕
tr_file = open("trainData.csv", "w")
tr_file.flush()
os.fsync(tr_file)
tr_file.write(tr_s)
tr_file.close()
df_train = pd.read_csv("trainData.csv", header=0)
print(df_train)
# 测试数据读取
with client.read(test_FILENAME) as te_fs:
te_content = te_fs.read()
te_s = str(te_content, 'utf-8')
# 确保文件写入完毕
te_file = open("testData.csv", "w")
te_file.flush()
os.fsync(te_file)
te_file.write(te_s)
te_file.close()
df_test = pd.read_csv("testData.csv", header=0)
print(df_test)
min_max_scaler = preprocessing.MinMaxScaler(feature_range=(-1, 1))
test_data_num = df_train.shape[0]
train_data_num = df_train.shape[0]
# 处理预测集
df_test = min_max_scaler.fit_transform(df_test)
df_test = np.array(df_test)
# 数据处理和清洗
cols = [tmp_i for tmp_i in df_train.columns if tmp_i not in [target]]
X = df_train[cols]
X = np.array(X)
X = min_max_scaler.fit_transform(X)
Y = df_train[target]
Y = np.array(Y)
# 训练集数据分割
X_train, X_test, Y_train, Y_test = train_test_split(
X, Y, test_size=train_split_ratio)
# 使用 scikit learn 中的LR模型进行训练
clf = LogisticRegression(penalty,
dual,
tol,
C,
random_state,
multi_class,
solver='liblinear')
clf.fit(X_train, Y_train)
# 准确率train_acc
train_acc = clf.score(X_test, Y_test)
print('score Scikit learn: ', train_acc)
# 精确率train_precision_score
train_precision_score = precision_score(Y_test, clf.predict(X_test))
# 召回率train_recall_score
train_recall_score = recall_score(Y_test, clf.predict(X_test))
# F1_Score
train_f1_score = f1_score(Y_test, clf.predict(X_test))
# roc_auc_score
train_roc_auc_score1 = roc_auc_score(Y_test, clf.predict(X_test))
# 使用 scikit learn 中的LR模型进行预测
result = clf.predict(df_test)
# print(result)
# 设置终止时间，并计算总时间
train_end = time.time()
train_seconds = train_end - start_time
m, s = divmod(train_seconds, 60)
h, m = divmod(m, 60)
time_trains_all = "%02d:%02d:%02d" % (h, m, s)
# ++++++++++++++++++++++++++++++++++++++++训练结果保存+++++++++++++++++++++++++++++++++++++++#
## 保存摘要模型报告文件
# abstract_path = HDFS_HOSTS1 + output_path + '/abstract/data/'
abstract_path = output_path + '/abstract/data/'
f = open('abstract.csv', mode='w', newline='')
fileheader = [
'FrameWork', 'Version', 'model', 'accuracy', 'time_trains_start',
'time_trains_all', 'test_data_num', 'train_data_num'
]
w = csv.DictWriter(f, fileheader)
w.writeheader()
csv_dict = edict()
csv_dict.FrameWork = 'Scikit-learn'
csv_dict.Version = sklearn.__version__
csv_dict.model = '%s' % LogisticRegression
csv_dict.accuracy = str(train_acc)
csv_dict.time_trains_start = time_trains_start
csv_dict.time_trains_all = time_trains_all
csv_dict.test_data_num = str(test_data_num)
csv_dict.train_data_num = str(train_data_num)
w.writerow(csv_dict)
f.close()
client.delete(abstract_path + 'abstract.csv')
client.upload(abstract_path + 'abstract.csv', 'abstract.csv')
# if len(client.list(abstract_path)):
# client.delete(abstract_path + 'abstract.csv')
# client.upload(abstract_path + 'abstract.csv', 'abstract.csv')
# else:
# client.upload(abstract_path + 'abstract.csv', 'abstract.csv')
##保存模型版本信息csv文件
version_path = output_path + '/msg/data/'
f = open('msg.csv', mode='w', newline='')
fileheader = [
'accuracy', 'time_trains_start', 'time_trains_all', 'test_data_num',
'train_data_num'
]
w = csv.DictWriter(f, fileheader)
w.writeheader()
csv_dict = edict()
csv_dict.accuracy = str(train_acc)
csv_dict.time_trains_start = time_trains_start
csv_dict.time_trains_all = time_trains_all
csv_dict.test_data_num = str(test_data_num)
csv_dict.train_data_num = str(train_data_num)
w.writerow(csv_dict)
f.close()
client.delete(version_path + 'msg.csv')
client.upload(version_path + 'msg.csv', 'msg.csv')
## 保存训练评价指标模型报告文件
file_csv_path = output_path + '/evaluation/data/'
f = open('evaluation.csv', mode='w', newline='')
fileheader = [
'accuracy', 'train_precision_score', 'train_recall_score',
'train_f1_score', 'train_roc_auc_score1'
]
w = csv.DictWriter(f, fileheader)
w.writeheader()
csv_dict = edict()
csv_dict.accuracy = str(train_acc)
csv_dict.train_precision_score = train_precision_score
csv_dict.train_recall_score = train_recall_score
csv_dict.train_f1_score = train_f1_score
csv_dict.train_roc_auc_score1 = train_roc_auc_score1
w.writerow(csv_dict)
f.close()
client.delete(file_csv_path + 'evaluation.csv')
client.upload(file_csv_path + 'evaluation.csv', 'evaluation.csv')
# 保存测试集预测结果文件
file_csv_path = output_path + '/result/data/'
# 字典中的key值即为csv中列名
dataframe = pd.DataFrame({target: result})
# 将DataFrame存储为csv,index表示是否显示行名，default=True
dataframe.to_csv("result.csv", index=False, sep=',')
client.delete(file_csv_path + 'result.csv')
client.upload(file_csv_path + 'result.csv', 'result.csv')
def conn(self):
client = Client('http://192.168.0.107:11070')
return client
