def testSuccessfulRun(self):
createMockCrawlDbDatum(2, 6, False)
p = pipelines._ExactDomainMapreducePipeline("ExactDomainMapreducePipeline",
params={
"entity_kind": "lakshmi.datum.CrawlDbDatum",
},
shard_count=3)
p.start()
test_support.execute_until_empty(self.taskqueue)
finished_map = pipelines._RobotsFetchPipeline.from_id(p.pipeline_id)
# Can open files
file_paths = finished_map.outputs.default.value
self.assertTrue(len(file_paths) > 0)
self.assertTrue(file_paths[0].startswith("/blobstore/"))
for file_path in file_paths:
blob_key = files.blobstore.get_blob_key(file_path)
reader = input_readers.BlobstoreLineInputReader(blob_key, 0, 100)
u = 0
for content in reader:
self.assertTrue(content[1]!=None)
u += 1
self.assertEqual(2, u)
query = CrawlDbDatum.query(CrawlDbDatum.extract_domain_url=="http://hoge_0.com")
entities = query.fetch()
for entity in entities:
self.assertEquals("http://hoge_0.com", entity.extract_domain_url)
def testSuccessfulRun(self):
createMockCrawlDbDatum(2, 6, False)
p = pipelines._ExactDomainMapreducePipeline(
"ExactDomainMapreducePipeline",
params={
"entity_kind": "lakshmi.datum.CrawlDbDatum",
},
shard_count=3)
p.start()
test_support.execute_until_empty(self.taskqueue)
finished_map = pipelines._RobotsFetchPipeline.from_id(p.pipeline_id)
# Can open files
file_paths = finished_map.outputs.default.value
self.assertTrue(len(file_paths) > 0)
self.assertTrue(file_paths[0].startswith("/blobstore/"))
for file_path in file_paths:
blob_key = files.blobstore.get_blob_key(file_path)
reader = input_readers.BlobstoreLineInputReader(blob_key, 0, 100)
u = 0
for content in reader:
self.assertTrue(content[1] != None)
u += 1
self.assertEqual(2, u)
query = CrawlDbDatum.query(
CrawlDbDatum.extract_domain_url == "http://hoge_0.com")
entities = query.fetch()
for entity in entities:
self.assertEquals("http://hoge_0.com", entity.extract_domain_url)
def testSuccessfulRun(self):
createMockCrawlDbDatum(2, 2, True)
file_name1 = self.createMockData(("http://hoge_0.com/content_0", True))
file_name2 = self.createMockData(
("http://hoge_1.com/content_0", False))
static_content = "<html><body>TestContent</body></html>"
self.setReturnValue(content=static_content,
headers={
"Content-Length": len(static_content),
"Content-Type": "text/html"
})
p = pipelines._FetchPagePipeline("FetchPipeline",
[file_name1, file_name2], 2)
p.start()
test_support.execute_until_empty(self.taskqueue)
finished_map = pipelines._FetchPagePipeline.from_id(p.pipeline_id)
# Can open files
file_paths = finished_map.outputs.default.value
self.assertTrue(len(file_paths) > 0)
self.assertTrue(file_paths[0].startswith("/blobstore/"))
entities = CrawlDbDatum.query(
CrawlDbDatum.url == "http://hoge_0.com/content_0").fetch()
entity = entities[0]
fetched_datum = FetchedDbDatum.query(ancestor=entity.key).fetch()
self.assertTrue(fetched_datum is not None)
def finalized(self):
"""Sends an email to admins indicating this Pipeline has completed.
For developer convenience. Automatically called from finalized for root
Pipelines that do not override the default action.
"""
status = "successful"
if self.was_aborted:
status = "aborted"
url = memcache.get("url")
email = memcache.get("email")
base_dir = os.path.realpath(os.path.dirname(__file__))
# Configure jinja for internal templates
env = Environment(
autoescape=True,
extensions=["jinja2.ext.i18n"],
loader=FileSystemLoader(os.path.join(base_dir, "templates")),
)
subject = "Your Fetcher Job is " + status
crawl_db_datum = crawl_db_datums = CrawlDbDatum.query(CrawlDbDatum.url == url).fetch()
crawl_db_datum = crawl_db_datums[0]
content_db_datums = ContentDbDatum.query(ancestor=crawl_db_datum.key).fetch_async()
fetched_db_datums = FetchedDbDatum.query(ancestor=crawl_db_datum.key).fetch()
attachments = []
if len(fetched_db_datums) > 0:
fetched_db_datum = fetched_db_datums[0]
attachments.append(("fetched_content.html", fetched_db_datum.fetched_content))
link_db_datums = LinkDbDatum.query(ancestor=crawl_db_datum.key).fetch_async()
html = env.get_template("mail_template.html").render(url=url, contents=content_db_datums, links=link_db_datums)
attachments.append(("sendmail.html", html))
sender = "*****@*****.**"
mail.send_mail(
sender=sender, to=email, subject=subject, body="FetchResults", html=html, attachments=attachments
)
def _fetchContentMap(binary_record):
"""Map function of fetch content.
Fetched content will store to blobstore.
Arg:
binary_record: key value data, that key is url of target page,
value is url of target of fetch.
Returns:
url: fetched url.
"""
proto = file_service_pb.KeyValue()
proto.ParseFromString(binary_record)
page_url = proto.key()
target_url = proto.value()
#Fetch to CrawlDbDatum
try:
query = CrawlDbDatum.query(CrawlDbDatum.url == page_url)
crawl_db_datum_future = query.fetch_async()
except Exception as e:
logging.warning("Failed create key, caused by invalid url:" +
page_url + ":" + e.message)
#start fetch
fetcher = fetchers.SimpleHttpFetcher(1, fetcher_policy_yaml.fetcher_policy)
stored_url = None
if re.match("^/", target_url):
crawl_db_datum = _getCrawlDatum(crawl_db_datum_future)
target_url = "%s%s" % (crawl_db_datum.extract_domain_url, target_url)
try:
fetch_result = fetcher.get(target_url)
if fetch_result:
#Storing to blobstore
blob_io = files.blobstore.create(
mime_type=fetch_result.get("mime_type"),
_blobinfo_uploaded_filename=fetch_result.get("fetched_url"))
with files.open(blob_io, 'a') as f:
f.write(fetch_result.get("content"))
files.finalize(blob_io)
blob_key = files.blobstore.get_blob_key(blob_io)
stored_url = images.get_serving_url(str(blob_key))
except Exception as e:
logging.warning("Fetch Error Occurs:" + e.message)
#Put content to datastore.
crawl_db_datum = _getCrawlDatum(crawl_db_datum_future)
if crawl_db_datum and stored_url is not None:
entity = ContentDbDatum(
parent=crawl_db_datum.key,
fetched_url=fetch_result.get("fetched_url"),
stored_url=stored_url,
content_type=fetch_result.get("mime_type"),
content_size=fetch_result.get("content_length"),
http_headers=str(fetch_result.get("headers")))
entity.put()
yield "%s:%s" % (target_url, stored_url)
def testSuccessfulRun(self):
"""Test clean pipeline."""
createMockFetchedDatum("http://foo.html", "Content", pipelines.FETCHED)
createMockFetchedDatum("http://bar.html", "Content", pipelines.SKIPPED)
createMockFetchedDatum("http://baz.html", "Content", pipelines.UNFETCHED)
p = pipelines.CleanDatumPipeline("CleanDatumPipeline",
params={
"entity_kind": "lakshmi.datum.CrawlDbDatum",
},
shards=3)
p.start()
test_support.execute_until_empty(self.taskqueue)
entities = CrawlDbDatum.query(CrawlDbDatum.url== "http://foo.html").fetch()
self.assertEquals(0, len(entities))
entities = CrawlDbDatum.query(CrawlDbDatum.url== "http://bar.html").fetch()
self.assertEquals(0, len(entities))
entities = CrawlDbDatum.query(CrawlDbDatum.url=="http://baz.html").fetch()
self.assertEquals(1, len(entities))
def _fetchContentMap(binary_record):
"""Map function of fetch content.
Fetched content will store to blobstore.
Arg:
binary_record: key value data, that key is url of target page,
value is url of target of fetch.
Returns:
url: fetched url.
"""
proto = file_service_pb.KeyValue()
proto.ParseFromString(binary_record)
page_url = proto.key()
target_url = proto.value()
#Fetch to CrawlDbDatum
try:
query = CrawlDbDatum.query(CrawlDbDatum.url==page_url)
crawl_db_datum_future = query.fetch_async()
except Exception as e:
logging.warning("Failed create key, caused by invalid url:" + page_url + ":" + e.message)
#start fetch
fetcher = fetchers.SimpleHttpFetcher(1, fetcher_policy_yaml.fetcher_policy)
stored_url = None
if re.match("^/", target_url):
crawl_db_datum = _getCrawlDatum(crawl_db_datum_future)
target_url = "%s%s" % (crawl_db_datum.extract_domain_url, target_url)
try:
fetch_result = fetcher.get(target_url)
if fetch_result:
#Storing to blobstore
blob_io = files.blobstore.create(mime_type=fetch_result.get("mime_type"),
_blobinfo_uploaded_filename=fetch_result.get("fetched_url"))
with files.open(blob_io, 'a') as f:
f.write(fetch_result.get("content"))
files.finalize(blob_io)
blob_key = files.blobstore.get_blob_key(blob_io)
stored_url = images.get_serving_url(str(blob_key))
except Exception as e:
logging.warning("Fetch Error Occurs:" + e.message)
#Put content to datastore.
crawl_db_datum = _getCrawlDatum(crawl_db_datum_future)
if crawl_db_datum and stored_url is not None:
entity = ContentDbDatum(parent=crawl_db_datum.key,
fetched_url=fetch_result.get("fetched_url"),
stored_url=stored_url,
content_type=fetch_result.get("mime_type"),
content_size=fetch_result.get("content_length"),
http_headers=str(fetch_result.get("headers")))
entity.put()
yield "%s:%s" % (target_url, stored_url)
def testSuccessfulRun(self):
"""Test extract outlinks by UDF."""
resource_neg = self.getResource("cloudysunny14.html")
static_content = resource_neg.read()
createMockFetchedDatum("http://cloudysunny14.html", static_content, pipelines.FETCHED)
file_name = self.createMockDataLine("http://cloudysunny14.html\n")
p = pipelines._ExtractOutlinksPipeline("ExtractOutlinksPipeline",
file_names=[file_name],
parser_params={
"text/html": __name__+"._htmlOutlinkParser"
})
p.start()
test_support.execute_until_empty(self.taskqueue)
entities = CrawlDbDatum.query(CrawlDbDatum.url=="http://cloudysunny14.html").fetch()
entity = entities[0]
fetched_datum = FetchedDbDatum.query(ancestor=entity.key).fetch()
self.assertTrue(fetched_datum!=None)
qry = CrawlDbDatum.query(CrawlDbDatum.last_status == pipelines.UNFETCHED)
crawl_db_datums = qry.fetch()
self.assertTrue(len(crawl_db_datums)==0)
def testSuccessfulRun(self):
"""Test extract outlinks by UDF."""
resource_neg = self.getResource("cloudysunny14.html")
static_content = resource_neg.read()
createMockFetchedDatum("http://cloudysunny14.html", static_content,
pipelines.FETCHED)
file_name = self.createMockDataLine("http://cloudysunny14.html\n")
p = pipelines._ExtractOutlinksPipeline(
"ExtractOutlinksPipeline",
file_names=[file_name],
parser_params={"text/html": __name__ + "._htmlOutlinkParser"})
p.start()
test_support.execute_until_empty(self.taskqueue)
entities = CrawlDbDatum.query(
CrawlDbDatum.url == "http://cloudysunny14.html").fetch()
entity = entities[0]
fetched_datum = FetchedDbDatum.query(ancestor=entity.key).fetch()
self.assertTrue(fetched_datum != None)
qry = CrawlDbDatum.query(
CrawlDbDatum.last_status == pipelines.UNFETCHED)
crawl_db_datums = qry.fetch()
self.assertTrue(len(crawl_db_datums) == 0)
def _extract_content_urls_map(data):
"""Map function of extract outlinks from content.
Function to be extracted and parsed to extract contents url with UDF.
For example, You specified parser UDF for HTML, would like to
fetch content from target page, and storing outlinks.
implement default like this::
def htmlParser(key, content):
outlinks = re.findall(r'href=[\'"]?([^\'" >]+)', content)
link_datums = []
for link in outlinks:
link_datum = LinkDbDatum(parent=key, link_url=link)
link_datums.append(link_datum)
ndb.put_multi_async(link_datums)
content_links = re.findall(r'src=[\'"]?([^\'" >]+)', content)
return content_links
Note:Note:The above function to return the URL of the target of
url that will fetch in the next job(FetchContentPipeline)
Args:
data: key value data, that key is position, value is url.
Returns:
url: The page url.
"""
k, url = data
query = CrawlDbDatum.query(CrawlDbDatum.url == url)
crawl_db_datum = query.fetch()
key = crawl_db_datum[0].key
fetched_datums = FetchedDbDatum.query(ancestor=key).fetch()
fetched_datum = fetched_datums[0]
content = None
if fetched_datum is not None:
content = fetched_datum.fetched_content
mime_type = fetched_datum.content_type
if content is not None:
parsed_obj = None
try:
params = _get_parser_param(_PARSER_PARAM_KEY)
parsed_obj = util.handler_for_name(params[mime_type])(key,
content)
except Exception as e:
logging.warning("Can not handle for %s[params:%s]:%s" %
(mime_type, params, e.message))
if parsed_obj is not None:
for content_urls in parsed_obj:
yield (url, content_urls)
def testSuccessfulRun(self):
file_name1 = self.createMockData(
("https://developers.google.com/appengine/",
"http://k.yimg.jp/images/top/sp/logo.gif"))
file_name2 = self.createMockData(
("https://developers.google.com/appengine/",
"/appengine/images/slide1.png"))
datum = CrawlDbDatum(
parent=ndb.Key(CrawlDbDatum,
"https://developers.google.com/appengine/"),
url="https://developers.google.com/appengine/",
extract_domain_url="https://developers.google.com",
last_status=pipelines.UNFETCHED)
datum.put()
resource = self.getResource("slide1.png")
static_content = resource.read()
self.setReturnValue(content=static_content,
headers={
"Content-Length": len(static_content),
"Content-Type": "image/png"
})
p = pipelines._FetchContentPipeline("FetchContentPipeline",
[file_name1, file_name2])
p.start()
test_support.execute_until_empty(self.taskqueue)
finished_map = pipelines._FetchSetsBufferPipeline.from_id(
p.pipeline_id)
# Can open files
file_paths = finished_map.outputs.default.value
self.assertTrue(len(file_paths) > 0)
self.assertTrue(file_paths[0].startswith("/blobstore/"))
reader = input_readers.RecordsReader(file_paths, 0)
for binary_record in reader:
proto = file_service_pb.KeyValue()
proto.ParseFromString(binary_record)
key = proto.key()
value = proto.value()
self.assertTrue(key is not None)
self.assertTrue(value is not None)
query = CrawlDbDatum.query(
CrawlDbDatum.url == "https://developers.google.com/appengine/")
crawl_db_datums = query.fetch()
self.assertTrue(len(crawl_db_datums) > 0)
key = crawl_db_datums[0].key
content_datums = ContentDbDatum.query(ancestor=key).fetch()
self.assertEqual(2, len(content_datums))
def testFetchEndToEnd(self):
"""Test for through of fetcher job"""
createMockCrawlDbDatum("http://foo.com/bar.html")
static_robots = "User-agent: test\nDisallow: /content_0\nDisallow: /content_1\nDisallow: /content_3"
self.setReturnValue(url="http://foo.com/robots.txt",
content=static_robots,
headers={"Content-Length": len(static_robots)})
#static resource is read from resource
resource = self.getResource("sample_content.html")
static_content = resource.read()
static_content_length = len(static_content)
self.setReturnValue(url="http://foo.com/bar.html",
content=static_content,
headers={
"Content-Length": static_content_length,
"Content-Type": "text/html"
})
resource_image = self.getResource("slide1.png")
static_content_image = resource_image.read()
static_content_length = len(static_content_image)
self.setReturnValue(url="http://foo.com/images/slide1.png",
content=static_content_image,
headers={
"Content-Length": static_content_length,
"Content-Type": "image/png"
})
p = pipelines.FetcherPipeline(
"FetcherPipeline",
params={"entity_kind": "lakshmi.datum.CrawlDbDatum"},
parser_params={"text/html": __name__ + ".htmlParser"},
shards=2)
p.start()
test_support.execute_until_empty(self.taskqueue)
crawl_db_datums = CrawlDbDatum.query(
CrawlDbDatum.url == "http://foo.com/bar.html").fetch()
crawl_db_datum = crawl_db_datums[0]
self.assertTrue(pipelines.FETCHED, crawl_db_datum.last_status)
fetched_db_datums = FetchedDbDatum.query(
ancestor=crawl_db_datum.key).fetch()
fetched_db_datum = fetched_db_datums[0]
self.assertTrue(fetched_db_datum is not None)
self.assertTrue("http://foo.com/bar.html",
fetched_db_datum.fetched_url)
link_db_datums = LinkDbDatum.query(ancestor=crawl_db_datum.key).fetch()
self.assertTrue(len(link_db_datums) > 0)
contents_db_datums = ContentDbDatum.query(
ancestor=crawl_db_datum.key).fetch()
self.assertTrue(len(contents_db_datums) > 0)
def testSuccessfulRun(self):
"""Test clean pipeline."""
createMockFetchedDatum("http://foo.html", "Content", pipelines.FETCHED)
createMockFetchedDatum("http://bar.html", "Content", pipelines.SKIPPED)
createMockFetchedDatum("http://baz.html", "Content",
pipelines.UNFETCHED)
p = pipelines.CleanDatumPipeline("CleanDatumPipeline",
params={
"entity_kind":
"lakshmi.datum.CrawlDbDatum",
},
shards=3)
p.start()
test_support.execute_until_empty(self.taskqueue)
entities = CrawlDbDatum.query(
CrawlDbDatum.url == "http://foo.html").fetch()
self.assertEquals(0, len(entities))
entities = CrawlDbDatum.query(
CrawlDbDatum.url == "http://bar.html").fetch()
self.assertEquals(0, len(entities))
entities = CrawlDbDatum.query(
CrawlDbDatum.url == "http://baz.html").fetch()
self.assertEquals(1, len(entities))
def _extract_content_urls_map(data):
"""Map function of extract outlinks from content.
Function to be extracted and parsed to extract contents url with UDF.
For example, You specified parser UDF for HTML, would like to
fetch content from target page, and storing outlinks.
implement default like this::
def htmlParser(key, content):
outlinks = re.findall(r'href=[\'"]?([^\'" >]+)', content)
link_datums = []
for link in outlinks:
link_datum = LinkDbDatum(parent=key, link_url=link)
link_datums.append(link_datum)
ndb.put_multi_async(link_datums)
content_links = re.findall(r'src=[\'"]?([^\'" >]+)', content)
return content_links
Note:Note:The above function to return the URL of the target of
url that will fetch in the next job(FetchContentPipeline)
Args:
data: key value data, that key is position, value is url.
Returns:
url: The page url.
"""
k, url = data
query = CrawlDbDatum.query(CrawlDbDatum.url==url)
crawl_db_datum = query.fetch()
key = crawl_db_datum[0].key
fetched_datums = FetchedDbDatum.query(ancestor=key).fetch()
fetched_datum = fetched_datums[0]
content = None
if fetched_datum is not None:
content = fetched_datum.fetched_content
mime_type = fetched_datum.content_type
if content is not None:
parsed_obj = None
try:
params = _get_parser_param(_PARSER_PARAM_KEY)
parsed_obj = util.handler_for_name(params[mime_type])(key, content)
except Exception as e:
logging.warning("Can not handle for %s[params:%s]:%s"%(mime_type, params, e.message))
if parsed_obj is not None:
for content_urls in parsed_obj:
yield (url, content_urls)
def testFetchEndToEnd(self):
"""Test for through of fetcher job"""
createMockCrawlDbDatum("http://foo.com/bar.html")
static_robots = "User-agent: test\nDisallow: /content_0\nDisallow: /content_1\nDisallow: /content_3"
self.setReturnValue(url="http://foo.com/robots.txt",
content=static_robots,
headers={"Content-Length": len(static_robots)})
#static resource is read from resource
resource = self.getResource("sample_content.html")
static_content = resource.read()
static_content_length = len(static_content)
self.setReturnValue(url="http://foo.com/bar.html",
content=static_content,
headers={"Content-Length": static_content_length,
"Content-Type": "text/html"})
resource_image = self.getResource("slide1.png")
static_content_image = resource_image.read()
static_content_length = len(static_content_image)
self.setReturnValue(url="http://foo.com/images/slide1.png",
content=static_content_image,
headers={"Content-Length": static_content_length,
"Content-Type": "image/png"})
p = pipelines.FetcherPipeline("FetcherPipeline",
params={
"entity_kind": "lakshmi.datum.CrawlDbDatum"
},
parser_params={
"text/html": __name__ + ".htmlParser"
},
shards=2)
p.start()
test_support.execute_until_empty(self.taskqueue)
crawl_db_datums = CrawlDbDatum.query(CrawlDbDatum.url=="http://foo.com/bar.html").fetch()
crawl_db_datum = crawl_db_datums[0]
self.assertTrue(pipelines.FETCHED, crawl_db_datum.last_status)
fetched_db_datums = FetchedDbDatum.query(ancestor=crawl_db_datum.key).fetch()
fetched_db_datum = fetched_db_datums[0]
self.assertTrue(fetched_db_datum is not None)
self.assertTrue("http://foo.com/bar.html", fetched_db_datum.fetched_url)
link_db_datums = LinkDbDatum.query(ancestor=crawl_db_datum.key).fetch()
self.assertTrue(len(link_db_datums)>0)
contents_db_datums = ContentDbDatum.query(ancestor=crawl_db_datum.key).fetch()
self.assertTrue(len(contents_db_datums)>0)
def _makeFetchSetBufferMap(binary_record):
"""Map function of create fetch buffers,
that output thus is one or more fetch url to fetch or skip.
Arg:
binary_record: key value data, that key is extract domain url,
value is content from robots.txt.
Returns:
url: to fetch url.
fetch_or_unfetch: the boolean value of fetch or unfetch,
if sets true is fetch, false is skip.
"""
proto = file_service_pb.KeyValue()
proto.ParseFromString(binary_record)
extract_domain_url = proto.key()
content = proto.value()
#Extract urls from CrawlDbDatum.
try:
query = CrawlDbDatum.query(
CrawlDbDatum.extract_domain_url == extract_domain_url)
crawl_datum_future = query.fetch_async()
except Exception as e:
logging.warning("Fetch error occurs from CrawlDbDatum" + e.message)
can_fetch = False
#Get the fetcher policy from resource.
user_agent = fetcher_policy_yaml.fetcher_policy.agent_name
rp = robotparser.RobotFileParser()
try:
rp.parse(content.split("\n").__iter__())
except Exception as e:
logging.warning("RobotFileParser raises exception:" + e.message)
for crawl_datum in crawl_datum_future.get_result():
url = crawl_datum.url
try:
can_fetch = rp.can_fetch(user_agent, url)
except Exception as e:
logging.warning("RobotFileParser raises exception:" + e.message)
url = ""
yield (url, can_fetch)
def finalized(self):
"""Sends an email to admins indicating this Pipeline has completed.
For developer convenience. Automatically called from finalized for root
Pipelines that do not override the default action.
"""
status = 'successful'
if self.was_aborted:
status = 'aborted'
url = memcache.get("url")
email = memcache.get("email")
base_dir = os.path.realpath(os.path.dirname(__file__))
# Configure jinja for internal templates
env = Environment(autoescape=True,
extensions=['jinja2.ext.i18n'],
loader=FileSystemLoader(
os.path.join(base_dir, 'templates')))
subject = "Your Fetcher Job is " + status
crawl_db_datum = crawl_db_datums = CrawlDbDatum.query(
CrawlDbDatum.url == url).fetch()
crawl_db_datum = crawl_db_datums[0]
content_db_datums = ContentDbDatum.query(
ancestor=crawl_db_datum.key).fetch_async()
fetched_db_datums = FetchedDbDatum.query(
ancestor=crawl_db_datum.key).fetch()
attachments = []
if len(fetched_db_datums) > 0:
fetched_db_datum = fetched_db_datums[0]
attachments.append(
("fetched_content.html", fetched_db_datum.fetched_content))
link_db_datums = LinkDbDatum.query(
ancestor=crawl_db_datum.key).fetch_async()
html = env.get_template("mail_template.html").render(
url=url, contents=content_db_datums, links=link_db_datums)
attachments.append(("sendmail.html", html))
sender = "*****@*****.**"
mail.send_mail(sender=sender,
to=email,
subject=subject,
body="FetchResults",
html=html,
attachments=attachments)
def _makeFetchSetBufferMap(binary_record):
"""Map function of create fetch buffers,
that output thus is one or more fetch url to fetch or skip.
Arg:
binary_record: key value data, that key is extract domain url,
value is content from robots.txt.
Returns:
url: to fetch url.
fetch_or_unfetch: the boolean value of fetch or unfetch,
if sets true is fetch, false is skip.
"""
proto = file_service_pb.KeyValue()
proto.ParseFromString(binary_record)
extract_domain_url = proto.key()
content = proto.value()
#Extract urls from CrawlDbDatum.
try:
query = CrawlDbDatum.query(CrawlDbDatum.extract_domain_url==extract_domain_url)
crawl_datum_future = query.fetch_async()
except Exception as e:
logging.warning("Fetch error occurs from CrawlDbDatum" + e.message)
can_fetch = False
#Get the fetcher policy from resource.
user_agent = fetcher_policy_yaml.fetcher_policy.agent_name
rp = robotparser.RobotFileParser()
try:
rp.parse(content.split("\n").__iter__())
except Exception as e:
logging.warning("RobotFileParser raises exception:" + e.message)
for crawl_datum in crawl_datum_future.get_result():
url = crawl_datum.url
try:
can_fetch = rp.can_fetch(user_agent, url)
except Exception as e:
logging.warning("RobotFileParser raises exception:" + e.message)
url = ""
yield (url, can_fetch)
def testSuccessfulRun(self):
file_name1 = self.createMockData(("https://developers.google.com/appengine/", "http://k.yimg.jp/images/top/sp/logo.gif"))
file_name2 = self.createMockData(("https://developers.google.com/appengine/", "/appengine/images/slide1.png"))
datum = CrawlDbDatum(
parent =ndb.Key(CrawlDbDatum, "https://developers.google.com/appengine/"),
url="https://developers.google.com/appengine/",
extract_domain_url="https://developers.google.com",
last_status=pipelines.UNFETCHED)
datum.put()
resource = self.getResource("slide1.png")
static_content = resource.read()
self.setReturnValue(content=static_content,
headers={"Content-Length": len(static_content),
"Content-Type": "image/png"})
p = pipelines._FetchContentPipeline("FetchContentPipeline", [file_name1, file_name2])
p.start()
test_support.execute_until_empty(self.taskqueue)
finished_map = pipelines._FetchSetsBufferPipeline.from_id(p.pipeline_id)
# Can open files
file_paths = finished_map.outputs.default.value
self.assertTrue(len(file_paths) > 0)
self.assertTrue(file_paths[0].startswith("/blobstore/"))
reader = input_readers.RecordsReader(file_paths, 0)
for binary_record in reader:
proto = file_service_pb.KeyValue()
proto.ParseFromString(binary_record)
key = proto.key()
value = proto.value()
self.assertTrue(key is not None)
self.assertTrue(value is not None)
query = CrawlDbDatum.query(CrawlDbDatum.url=="https://developers.google.com/appengine/")
crawl_db_datums = query.fetch()
self.assertTrue(len(crawl_db_datums)>0)
key = crawl_db_datums[0].key
content_datums = ContentDbDatum.query(ancestor=key).fetch()
self.assertEqual(2, len(content_datums))
def testSuccessfulRun(self):
createMockCrawlDbDatum(2, 2, True)
file_name1 = self.createMockData(("http://hoge_0.com/content_0", True))
file_name2 = self.createMockData(("http://hoge_1.com/content_0", False))
static_content = "<html><body>TestContent</body></html>"
self.setReturnValue(content=static_content,
headers={"Content-Length": len(static_content),
"Content-Type": "text/html"})
p = pipelines._FetchPagePipeline("FetchPipeline", [file_name1, file_name2], 2)
p.start()
test_support.execute_until_empty(self.taskqueue)
finished_map = pipelines._FetchPagePipeline.from_id(p.pipeline_id)
# Can open files
file_paths = finished_map.outputs.default.value
self.assertTrue(len(file_paths) > 0)
self.assertTrue(file_paths[0].startswith("/blobstore/"))
entities = CrawlDbDatum.query(CrawlDbDatum.url=="http://hoge_0.com/content_0").fetch()
entity = entities[0]
fetched_datum = FetchedDbDatum.query(ancestor=entity.key).fetch()
self.assertTrue(fetched_datum is not None)
def _fetchMap(binary_record):
"""Map function of create fetch result,
that create FetchResulDatum entity, will be store to datastore.
Arg:
binary_record: key value data, that key is url to fetch,
value is boolean value of can be fetch.
Returns:
url: to fetch url.
fetch_result: the result of fetch.
"""
proto = file_service_pb.KeyValue()
proto.ParseFromString(binary_record)
url = proto.key()
could_fetch = _str2bool(proto.value())
result = UNFETCHED
fetched_url = ""
fetch_date = None
#Fetch to CrawlDbDatum
try:
query = CrawlDbDatum.query(CrawlDbDatum.url == url)
crawl_db_datum_future = query.fetch_async()
except Exception as e:
logging.warning("Failed create key, caused by invalid url:" + url +
":" + e.message)
could_fetch = False
if could_fetch:
#start fetch
fetcher = fetchers.SimpleHttpFetcher(
1, fetcher_policy_yaml.fetcher_policy)
try:
fetch_result = fetcher.get(url)
if fetch_result:
#Storing to datastore
crawl_db_datums = crawl_db_datum_future.get_result()
fetche_datum = FetchedDbDatum(
parent=crawl_db_datums[0].key,
url=url,
fetched_url=fetch_result.get("fetched_url"),
fetch_time=fetch_result.get("time"),
fetched_content=fetch_result.get("content"),
content_type=fetch_result.get("mime_type"),
content_size=fetch_result.get("read_rate"),
response_rate=fetch_result.get("read_rate"),
http_headers=str(fetch_result.get("headers")))
fetche_datum.put()
#update time of last fetched
result = FETCHED
fetch_date = datetime.datetime.now()
fetched_url = ("%s\n" % url)
except Exception as e:
logging.warning("Fetch Page Error Occurs:" + e.message)
result = FAILED
else:
result = FAILED
#Update status to all datums.
crawl_db_datums = crawl_db_datum_future.get_result()
for datum in crawl_db_datums:
datum.last_status = result
datum.last_fetched = fetch_date
ndb.put_multi(crawl_db_datums)
yield fetched_url
def _fetchMap(binary_record):
"""Map function of create fetch result,
that create FetchResulDatum entity, will be store to datastore.
Arg:
binary_record: key value data, that key is url to fetch,
value is boolean value of can be fetch.
Returns:
url: to fetch url.
fetch_result: the result of fetch.
"""
proto = file_service_pb.KeyValue()
proto.ParseFromString(binary_record)
url = proto.key()
could_fetch = _str2bool(proto.value())
result = UNFETCHED
fetched_url = ""
fetch_date = None
#Fetch to CrawlDbDatum
try:
query = CrawlDbDatum.query(CrawlDbDatum.url==url)
crawl_db_datum_future = query.fetch_async()
except Exception as e:
logging.warning("Failed create key, caused by invalid url:" + url + ":" + e.message)
could_fetch = False
if could_fetch:
#start fetch
fetcher = fetchers.SimpleHttpFetcher(1, fetcher_policy_yaml.fetcher_policy)
try:
fetch_result = fetcher.get(url)
if fetch_result:
#Storing to datastore
crawl_db_datums = crawl_db_datum_future.get_result()
fetche_datum = FetchedDbDatum(parent=crawl_db_datums[0].key,
url=url, fetched_url = fetch_result.get("fetched_url"),
fetch_time = fetch_result.get("time"), fetched_content = fetch_result.get("content"),
content_type = fetch_result.get("mime_type"),
content_size = fetch_result.get("read_rate"),
response_rate = fetch_result.get("read_rate"),
http_headers = str(fetch_result.get("headers")))
fetche_datum.put()
#update time of last fetched
result = FETCHED
fetch_date = datetime.datetime.now()
fetched_url = ("%s\n"%url)
except Exception as e:
logging.warning("Fetch Page Error Occurs:" + e.message)
result = FAILED
else:
result = FAILED
#Update status to all datums.
crawl_db_datums = crawl_db_datum_future.get_result()
for datum in crawl_db_datums:
datum.last_status = result
datum.last_fetched = fetch_date
ndb.put_multi(crawl_db_datums)
yield fetched_url