TikaJAXRS PUT from Python client - python-requests

Question

Apache Tika should be accessible from Python program via HTTP, but I can't get it to work.
I am using this command to run the server (with and without the two options at the end):
java -jar tika-server-1.17.jar --port 5677 -enableUnsecureFeatures -enableFileUrl
And it works fine with curl:
curl -v -T /tmp/tmpsojwBN http://localhost:5677/tika
* Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 5677 (#0)
> PUT /tika HTTP/1.1
> Host: localhost:5677
> User-Agent: curl/7.47.0
> Accept: */*
> Accept-Encoding: gzip, deflate
> Content-Length: 418074
> Expect: 100-continue
>
< HTTP/1.1 100 Continue
* We are completely uploaded and fine
< HTTP/1.1 200 OK
< Content-Type: text/plain
< Date: Sat, 07 Apr 2018 12:28:41 GMT
< Transfer-Encoding: chunked
< Server: Jetty(8.y.z-SNAPSHOT)
But when I try something like (tried different combinations for headers, here I recreated same headers as python-tika client uses):
with tempfile.NamedTemporaryFile() as tmp_file:
download_file(url, tmp_file)
payload = open(tmp_file.name, 'rb')
headers = {
'Accept': 'application/json',
'Content-Disposition': 'attachment; filename={}'.format(
os.path.basename(tmp_file.name))}
response = requests.put(TIKA_ENDPOINT_URL + '/tika', payload,
headers=headers,
verify=False)
I've tried to use payload as well as fileUrl - with the same result of WARN javax.ws.rs.ClientErrorException: HTTP 406 Not Acceptable and java stack trace on the server. Full trace:
WARN javax.ws.rs.ClientErrorException: HTTP 406 Not Acceptable
at org.apache.cxf.jaxrs.utils.SpecExceptions.toHttpException(SpecExceptions.java:117)
at org.apache.cxf.jaxrs.utils.ExceptionUtils.toHttpException(ExceptionUtils.java:173)
at org.apache.cxf.jaxrs.utils.JAXRSUtils.findTargetMethod(JAXRSUtils.java:542)
at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.processRequest(JAXRSInInterceptor.java:177)
at org.apache.cxf.jaxrs.interceptor.JAXRSInInterceptor.handleMessage(JAXRSInInterceptor.java:77)
at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:307)
at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:274)
at org.apache.cxf.transport.http_jetty.JettyHTTPDestination.doService(JettyHTTPDestination.java:261)
at org.apache.cxf.transport.http_jetty.JettyHTTPHandler.handle(JettyHTTPHandler.java:76)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1088)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1024)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:973)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1035)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:641)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:231)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:696)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:53)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:748)
I've also tried to compare ( with nc -l localhost 5677 | less) what is so different with two requests (payload abbreviated):
From curl:
PUT /tika HTTP/1.1
Host: localhost:5677
User-Agent: curl/7.47.0
Accept: */*
Content-Length: 418074
Expect: 100-continue
%PDF-1.4
%<D3><EB><E9><E1>
1 0 obj
<</Creator (Chromium)
From Python requests library:
PUT /tika HTTP/1.1
Host: localhost:5677
Connection: keep-alive
Accept-Encoding: gzip, deflate
Accept: application/json
User-Agent: python-requests/2.13.0
Content-type: application/pdf
Content-Length: 246176
%PDF-1.4
%<D3><EB><E9><E1>
1 0 obj
<</Creator (Chromium)
The question is, what is the correct way to call Tika server from Python?
I've also tried python tika library in client-only mode and using tika-app via jnius. With tika client, as well as using tika-app.jar with pyjnius, I only freezes (call never returns) when I use them in a celery worker. At the same, pyjnius / tika-app and tika-python script both work nicely in a script: I have not figured out what is wrong inside celery worker. I guess, something to do with threading and/or initialization in wrong place. But that is a topic for another question.
And here is what tika-python requests:
PUT /tika HTTP/1.1
Host: localhost:5677
Connection: keep-alive
Accept-Encoding: gzip, deflate
Accept: application/json
User-Agent: python-requests/2.13.0
Content-Disposition: attachment; filename=tmpb3YkTq
Content-Length: 183234
%PDF-1.4
%<D3><EB><E9><E1>
1 0 obj
<</Creator (Chromium)
And now it seems like this is some kind of a problem with tika server:
$ tika-python --verbose --server 'localhost' --port 5677 parse all /tmp/tmpb3YkTq
2018-04-08 09:44:11,555 [MainThread ] [INFO ] Writing ./tmpb3YkTq_meta.json
(<open file '<stderr>', mode 'w' at 0x7f0b688eb1e0>, 'Request headers: ', {'Accept': 'application/json', 'Content-Disposition': 'attachment; filename=tmpb3YkTq'})
(<open file '<stderr>', mode 'w' at 0x7f0b688eb1e0>, 'Response headers: ', {'Date': 'Sun, 08 Apr 2018 06:44:13 GMT', 'Transfer-Encoding': 'chunked', 'Content-Type': 'application/json', 'Server': 'Jetty(8.y.z-SNAPSHOT)'})
['./tmpb3YkTq_meta.json']
Cf:
$ tika-python --verbose --server 'localhost' --port 5677 parse text /tmp/tmpb3YkTq
2018-04-08 09:43:38,326 [MainThread ] [INFO ] Writing ./tmpb3YkTq_meta.json
(<open file '<stderr>', mode 'w' at 0x7fc3eee4a1e0>, 'Request headers: ', {'Accept': 'application/json', 'Content-Disposition': 'attachment; filename=tmpb3YkTq'})
(<open file '<stderr>', mode 'w' at 0x7fc3eee4a1e0>, 'Response headers: ', {'Date': 'Sun, 08 Apr 2018 06:43:38 GMT', 'Content-Length': '0', 'Server': 'Jetty(8.y.z-SNAPSHOT)'})
2018-04-08 09:43:38,409 [MainThread ] [WARNI] Tika server returned status: 406
['./tmpb3YkTq_meta.json']