class BatchCrawler():
MAX_DOCS_NUM = 100
def __init__(self, database_config_path, source_name, domain, encode,
request_interval):
self.logger = Logger("crawler", domain)
self.adapter = DocRawAdapter(database_config_path, source_name,
self.logger)
self.domain = domain
self.encode = encode
self.request_interval = request_interval
def run(self):
while True:
count = 0
try:
for url_hash, url in self.adapter.load_uncrawled_docs(
BatchCrawler.MAX_DOCS_NUM):
count += 1
self.logger.log("crawling url %s" % url, 2)
page = common_utils.page_crawl(url)
if page == None:
self.adapter.update_doc_raw_as_crawled_failed(url_hash)
continue
if self.encode != "utf-8":
page = unicode(page, self.encode).encode("utf-8")
self.adapter.update_doc_raw_with_crawled_page(
url_hash, "utf-8", page)
time.sleep(float(self.request_interval))
if count < BatchCrawler.MAX_DOCS_NUM:
break
except:
self.logger.log("mongo error")
class BatchCrawler():
MAX_DOCS_NUM = 100
def __init__(self, database_config_path, source_name, domain, encode, request_interval):
self.logger = Logger("crawler", domain)
self.adapter = DocRawAdapter(database_config_path, source_name, self.logger)
self.domain = domain
self.encode = encode
self.request_interval = request_interval
def run(self):
while True:
count = 0
try:
for url_hash, url in self.adapter.load_uncrawled_docs(BatchCrawler.MAX_DOCS_NUM):
count += 1
self.logger.log("crawling url %s"%url, 2)
page = common_utils.page_crawl(url)
if page == None:
self.adapter.update_doc_raw_as_crawled_failed(url_hash)
continue
if self.encode != "utf-8":
page = unicode(page, self.encode).encode("utf-8")
self.adapter.update_doc_raw_with_crawled_page(url_hash, "utf-8", page)
time.sleep(float(self.request_interval))
if count < BatchCrawler.MAX_DOCS_NUM:
break
except:
self.logger.log("mongo error")
def __init__(self, database_config_path, source_name, domain, encode,
request_interval):
self.logger = Logger("crawler", domain)
self.adapter = DocRawAdapter(database_config_path, source_name,
self.logger)
self.domain = domain
self.encode = encode
self.request_interval = request_interval
def __init__(self,
data_adapter_config_path,
source_name,
encode="utf-8",
parse_try_limit=3):
self.logger = Logger("spider", source_name)
self.doc_raw_adapter = DocRawAdapter(data_adapter_config_path,
source_name, self.logger)
self.data_raw_adapter = DataRawAdapter(data_adapter_config_path,
source_name, self.logger)
self.image_store_adapter = ImageStoreAdapter(data_adapter_config_path,
self.logger)
self.source_name = source_name
self.encode = encode
self.parse_try_limit = parse_try_limit
self.exploring_times = 0
def __init__(self, data_adapter_config_path, source_name, encode = "utf-8", parse_try_limit = 3):
self.logger = Logger("spider", source_name)
self.doc_raw_adapter = DocRawAdapter(data_adapter_config_path, source_name, self.logger)
self.data_raw_adapter = DataRawAdapter(data_adapter_config_path, source_name, self.logger)
self.image_store_adapter = ImageStoreAdapter(data_adapter_config_path, self.logger)
self.source_name = source_name
self.encode = encode
self.parse_try_limit = parse_try_limit
self.exploring_times = 0
class SpiderBase():
def __init__(self,
data_adapter_config_path,
source_name,
encode="utf-8",
parse_try_limit=3):
self.logger = Logger("spider", source_name)
self.doc_raw_adapter = DocRawAdapter(data_adapter_config_path,
source_name, self.logger)
self.data_raw_adapter = DataRawAdapter(data_adapter_config_path,
source_name, self.logger)
self.image_store_adapter = ImageStoreAdapter(data_adapter_config_path,
self.logger)
self.source_name = source_name
self.encode = encode
self.parse_try_limit = parse_try_limit
self.exploring_times = 0
def url_exists_in_doc_raw(self, url):
url_hash = common_utils.gen_url_hash(url)
return self.doc_raw_adapter.has_doc_raw_by_url_hash(url_hash)
def url_hash_exists_in_data_raw(self, url_hash):
return self.data_raw_adapter.has_data_raw_by_url_hash(url_hash)
def parse(self, url_hash, page, encode, stage, context, created_at,
page_crawled_at):
'''
you must override this function
'''
self.logger.log(
"what the hell!!!you have to override to implement parse logic!!!")
features = {}
images = []
images.append({
"name": "test_image_name",
"url": "test_image_url",
"image_format": "jpg"
})
next_update_time = None
children = []
children.append({
"url": "test_url",
"stage": "test_stage",
"context": "test_context",
"operation_flag": SpiderChildNodeOperationFlag.NEW_ADD
})
return features, images, next_update_time, children
def explore_child(self, father_url_hash, url, url_hash, stage, context,
operation_flag):
if operation_flag == SpiderChildNodeOperationFlag.NEW_ADD:
if not self.doc_raw_adapter.has_doc_raw_by_url_hash(url_hash):
self.doc_raw_adapter.create_doc_raw(url_hash, url, stage,
context, father_url_hash)
self.logger.log("child [%s] %s new added." % (url_hash, url))
else:
if self.doc_raw_adapter.has_doc_raw_by_url_hash(url_hash):
if operation_flag == SpiderChildNodeOperationFlag.UPDATE_INFO_ONLY:
self.doc_raw_adapter.update_doc_raw_with_node_info(
url_hash,
stage=stage,
context=context,
father=father_url_hash)
self.logger.log("child [%s]'s info is updated." %
(url_hash))
elif operation_flag == SpiderChildNodeOperationFlag.FORCE_TO_REPARSE:
self.doc_raw_adapter.update_doc_raw_with_node_info(
url_hash,
stage=stage,
context=context,
father=father_url_hash,
status_flag=DocRawStatus.PAGE_CRAWLED)
self.logger.log("child [%s] is set to reparse data." %
(url_hash))
elif operation_flag == SpiderChildNodeOperationFlag.FORCE_TO_RECRAWL:
self.doc_raw_adapter.update_doc_raw_with_node_info(
url_hash,
stage=stage,
context=context,
father=father_url_hash,
status_flag=DocRawStatus.NEW_ADDED)
self.logger.log("child [%s]'s is set to recrawled page." %
(url_hash))
def spider_run(self):
for url_hash, url, stage, page, encode, context, created_at, page_crawled_at in self.doc_raw_adapter.load_unparsed_doc_raw(
):
try:
self.logger.log("parsing [%s]." % (url_hash))
features, images, next_update_time, children = self.parse(
url_hash, page, encode, stage, context, created_at,
page_crawled_at)
if images != None:
for i in range(0, len(images)):
try:
image_id = common_utils.gen_url_hash(
images[i]["url"])
if not self.image_store_adapter.has_image_index_by_image_id(
image_id):
images[i]["image_id"] = image_id
self.image_store_adapter.create_image_index(
image_id, images[i]["image_format"],
images[i]["url"])
self.logger.log(
"image [%s] created for [%s]." %
(image_id, url_hash))
except BaseException, e:
self.logger.log(
"Error occured when creating image index: %s" %
(e))
if features != None:
if not self.url_hash_exists_in_data_raw(url_hash):
self.data_raw_adapter.create_data_raw(
url_hash, url, features, images)
self.logger.log("features for [%s] is added." %
(url_hash))
else:
self.data_raw_adapter.update_data_raw(
url_hash, features, images)
self.logger.log("features for [%s] is updated." %
(url_hash))
children_url_hashes = None
if children != None:
children_url_hashes = []
for child in children:
try:
url_new = child["url"]
url_hash_new = common_utils.gen_url_hash(
child["url"])
stage_new = child["stage"]
context_new = child["context"]
operation_flag = child["operation_flag"]
self.explore_child(url_hash, url_new, url_hash_new,
stage_new, context_new,
operation_flag)
children_url_hashes.append(url_hash_new)
except BaseException, e:
self.logger.log(
"Error occured when exploring child: %s" % (e))
self.doc_raw_adapter.update_doc_raw_with_node_info(
url_hash,
next_update_time=next_update_time,
children=children_url_hashes,
status_flag=DocRawStatus.DATA_PARSED)
except BaseException, e:
self.logger.log("Error occured in main spider_run: %s" % (e))
if url_hash != None:
parse_try_times = self.doc_raw_adapter.get_doc_raw_parse_try_times(
url_hash)
if parse_try_times + 1 >= self.parse_try_limit:
self.doc_raw_adapter.update_doc_raw_with_node_info(
url_hash,
status_flag=DocRawStatus.ERROR_FAILED_TO_PARSED)
else:
self.doc_raw_adapter.update_doc_raw_with_node_info(
url_hash,
next_update_time=datetime.datetime.now() +
datetime.timedelta(86400),
parse_try_times=parse_try_times + 1,
status_flag=DocRawStatus.NEW_ADDED)
def __init__(self, database_config_path, source_name, domain, encode, request_interval):
self.logger = Logger("crawler", domain)
self.adapter = DocRawAdapter(database_config_path, source_name, self.logger)
self.domain = domain
self.encode = encode
self.request_interval = request_interval
def print_resource():
print("spider_seeds.py source_name_1, [source_name_2, ...]")
database_config_path = "../database_config.xml"
if __name__ == '__main__':
for i in range(1, len(sys.argv)):
source_name = sys.argv[i]
seed_path = "seeds/" + source_name + ".xml"
if os.path.exists(seed_path):
print("Loading seed from file %s..."%(seed_path))
f = open(seed_path, "r")
seeds = BeautifulSoup(f.read())
f.close()
doc_raw_adapter = DocRawAdapter(database_config_path, source_name)
for seed in seeds.findAll("seed"):
url = seed.url.string
stage = seed.stage.string
context = {}
for content in seed.context.findAll():
content_type = content.get("type")
if content_type == "int":
context[content.name] = int(content.string)
else:
context[content.name] = content.string
url_hash = common_utils.gen_url_hash(url)
if not doc_raw_adapter.has_doc_raw_by_url_hash(url_hash):
doc_raw_adapter.create_doc_raw(url_hash, url, stage, context)
print("%s added into %s"%(url, source_name))
class SpiderBase():
def __init__(self, data_adapter_config_path, source_name, encode = "utf-8", parse_try_limit = 3):
self.logger = Logger("spider", source_name)
self.doc_raw_adapter = DocRawAdapter(data_adapter_config_path, source_name, self.logger)
self.data_raw_adapter = DataRawAdapter(data_adapter_config_path, source_name, self.logger)
self.image_store_adapter = ImageStoreAdapter(data_adapter_config_path, self.logger)
self.source_name = source_name
self.encode = encode
self.parse_try_limit = parse_try_limit
self.exploring_times = 0
def url_exists_in_doc_raw(self, url):
url_hash = common_utils.gen_url_hash(url)
return self.doc_raw_adapter.has_doc_raw_by_url_hash(url_hash)
def url_hash_exists_in_data_raw(self, url_hash):
return self.data_raw_adapter.has_data_raw_by_url_hash(url_hash)
def parse(self, url_hash, page, encode, stage, context, created_at, page_crawled_at):
'''
you must override this function
'''
self.logger.log("what the hell!!!you have to override to implement parse logic!!!")
features = {}
images = []
images.append({"name" : "test_image_name", "url" : "test_image_url", "image_format" : "jpg"})
next_update_time = None
children = []
children.append({"url" : "test_url", "stage" : "test_stage", "context" : "test_context", "operation_flag" : SpiderChildNodeOperationFlag.NEW_ADD})
return features, images, next_update_time, children
def explore_child(self, father_url_hash, url, url_hash, stage, context, operation_flag):
if operation_flag == SpiderChildNodeOperationFlag.NEW_ADD:
if not self.doc_raw_adapter.has_doc_raw_by_url_hash(url_hash):
self.doc_raw_adapter.create_doc_raw(url_hash, url, stage, context, father_url_hash)
self.logger.log("child [%s] %s new added."%(url_hash, url))
else:
if self.doc_raw_adapter.has_doc_raw_by_url_hash(url_hash):
if operation_flag == SpiderChildNodeOperationFlag.UPDATE_INFO_ONLY:
self.doc_raw_adapter.update_doc_raw_with_node_info(url_hash,
stage = stage,
context = context,
father = father_url_hash)
self.logger.log("child [%s]'s info is updated."%(url_hash))
elif operation_flag == SpiderChildNodeOperationFlag.FORCE_TO_REPARSE:
self.doc_raw_adapter.update_doc_raw_with_node_info(url_hash,
stage = stage,
context = context,
father = father_url_hash,
status_flag = DocRawStatus.PAGE_CRAWLED)
self.logger.log("child [%s] is set to reparse data."%(url_hash))
elif operation_flag == SpiderChildNodeOperationFlag.FORCE_TO_RECRAWL:
self.doc_raw_adapter.update_doc_raw_with_node_info(url_hash,
stage = stage,
context = context,
father = father_url_hash,
status_flag = DocRawStatus.NEW_ADDED)
self.logger.log("child [%s]'s is set to recrawled page."%(url_hash))
def spider_run(self):
for url_hash, url, stage, page, encode, context, created_at, page_crawled_at in self.doc_raw_adapter.load_unparsed_doc_raw():
try:
self.logger.log("parsing [%s]."%(url_hash))
features, images, next_update_time, children = self.parse(url_hash, page, encode, stage, context, created_at, page_crawled_at)
if images != None:
for i in range(0, len(images)):
try:
image_id = common_utils.gen_url_hash(images[i]["url"])
if not self.image_store_adapter.has_image_index_by_image_id(image_id):
images[i]["image_id"] = image_id
self.image_store_adapter.create_image_index(image_id, images[i]["image_format"], images[i]["url"])
self.logger.log("image [%s] created for [%s]."%(image_id, url_hash))
except BaseException, e:
self.logger.log("Error occured when creating image index: %s"%(e))
if features != None:
if not self.url_hash_exists_in_data_raw(url_hash):
self.data_raw_adapter.create_data_raw(url_hash, url, features, images)
self.logger.log("features for [%s] is added."%(url_hash))
else:
self.data_raw_adapter.update_data_raw(url_hash, features, images)
self.logger.log("features for [%s] is updated."%(url_hash))
children_url_hashes = None
if children != None:
children_url_hashes = []
for child in children:
try:
url_new = child["url"]
url_hash_new = common_utils.gen_url_hash(child["url"])
stage_new = child["stage"]
context_new = child["context"]
operation_flag = child["operation_flag"]
self.explore_child(url_hash, url_new, url_hash_new, stage_new, context_new, operation_flag)
children_url_hashes.append(url_hash_new)
except BaseException, e:
self.logger.log("Error occured when exploring child: %s"%(e))
self.doc_raw_adapter.update_doc_raw_with_node_info(url_hash,
next_update_time = next_update_time,
children = children_url_hashes,
status_flag = DocRawStatus.DATA_PARSED)
except BaseException, e:
self.logger.log("Error occured in main spider_run: %s"%(e))
if url_hash != None:
parse_try_times = self.doc_raw_adapter.get_doc_raw_parse_try_times(url_hash)
if parse_try_times + 1 >= self.parse_try_limit:
self.doc_raw_adapter.update_doc_raw_with_node_info(url_hash,
status_flag = DocRawStatus.ERROR_FAILED_TO_PARSED)
else:
self.doc_raw_adapter.update_doc_raw_with_node_info(url_hash,
next_update_time = datetime.datetime.now() + datetime.timedelta(86400),
parse_try_times = parse_try_times + 1,
status_flag = DocRawStatus.NEW_ADDED)
print("spider_seeds.py source_name_1, [source_name_2, ...]")
database_config_path = "../database_config.xml"
if __name__ == '__main__':
for i in range(1, len(sys.argv)):
source_name = sys.argv[i]
seed_path = "seeds/" + source_name + ".xml"
if os.path.exists(seed_path):
print("Loading seed from file %s..." % (seed_path))
f = open(seed_path, "r")
seeds = BeautifulSoup(f.read())
f.close()
doc_raw_adapter = DocRawAdapter(database_config_path, source_name)
for seed in seeds.findAll("seed"):
url = seed.url.string
stage = seed.stage.string
context = {}
for content in seed.context.findAll():
content_type = content.get("type")
if content_type == "int":
context[content.name] = int(content.string)
else:
context[content.name] = content.string
url_hash = common_utils.gen_url_hash(url)
if not doc_raw_adapter.has_doc_raw_by_url_hash(url_hash):
doc_raw_adapter.create_doc_raw(url_hash, url, stage,
context)
