[GeoNetwork-users] Access Geonetwork via Python-Skript

GeoNetwork GeoNetwork User
1

Hi guys,
I am currently trying to access my Geonetwork via python. I want to write a short script that dwonloads an attachment from a geonetwork entry of which I know the UUID. Sounds not too cmplicated but I can not manage the Login to the site.
Here is the code I use:

from requestsimport Sessionwith Session()as s:
     token ="***" login_data = {"username":"***","password":"***","csrf_token": token}
     #print(login_data) s.post("https://***/geonetwork/srv/ger/catalog.signin", login_data)
     r = s.get("https://***/geonetwork/srv/api/records/UUID/attachments/***.zip") #print(r.status_code) #print(r.headers['content-type']) #print(r.encoding) I always get a 403 error message and do not have any clue why it is not working. I am no experienced programmer so any help would be really appreciated. Many thx and all the best Andreas

2

Hi Andreas,

In my recent post (at
https://sourceforge.net/p/geonetwork/mailman/message/37147884/) I hope you
will find the answer.
It's in the 'update' method, which is part of the MetadataRecord class I
created for convenience.

You can instantiate the class as follows:

my_record = MetadataRecord()

And then you have the update method at your disposal:

my_record.update()

In your case, you'll have to fiddle with this method to return the
attachment instead of updating some metadata fields, though.

Kind regards, good luck,
Rein

Op di 10 nov. 2020 om 16:51 schreef Andreas Böhme <andreas.boehme@anonymised.com81...>:

Hi guys,
I am currently trying to access my Geonetwork via python. I want to
write a short script that dwonloads an attachment from a geonetwork
entry of which I know the UUID. Sounds not too cmplicated but I can not
manage the Login to the site.
Here is the code I use:

from requestsimport Sessionwith Session()as s:
     token ="***" login_data =
{"username":"***","password":"***","csrf_token": token}
     #print(login_data) s.post("https://***/geonetwork/srv/ger/catalog.signin",
login_data)
     r =
s.get("https://***/geonetwork/srv/api/records/UUID/attachments/***.zip")
  #print(r.status_code) #print(r.headers['content-type'])
#print(r.encoding) I always get a 403 error message and do not have any
clue why it is not working. I am no experienced programmer so any help
would be really appreciated. Many thx and all the best Andreas

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3

Hello Andreas,

another recommendation would be to use the python library owslib <https://geopython.github.io/OWSLib/index.html&gt; by Tom Kralidis that offers various interactions with ogc-compliant APIs including CSW. It has nice wrapper tools in owslib.utils that might support you in what you are trying to do. At least it is handling the authentication, cookie or XR…F(?) token exchange etc. and also uses the requests class for the connection.

But another thing - I wasn't aware you could add attachments to metadata entries. Is the attachment you want to download really 'physically bound' to geonetwork file structure, or added via a reference? If so, you could first extract its link from the metadata entry and then download from the linked resource.

Cheers,
Lars

Am 10.11.20 um 16:45 schrieb Andreas Böhme:

Hi guys,
I am currently trying to access my Geonetwork via python. I want to write a short script that dwonloads an attachment from a geonetwork entry of which I know the UUID. Sounds not too cmplicated but I can not manage the Login to the site.
Here is the code I use:

from requestsimport Sessionwith Session()as s:
token ="***" login_data = {"username":"***","password":"***","csrf_token": token}
#print(login_data) s.post("https://***/geonetwork/srv/ger/catalog.signin", login_data)
r = s.get("https://***/geonetwork/srv/api/records/UUID/attachments/***.zip") #print(r.status_code) #print(r.headers['content-type']) #print(r.encoding) I always get a 403 error message and do not have any clue why it is not working. I am no experienced programmer so any help would be really appreciated. Many thx and all the best Andreas

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4

Thx for all the answers. I will try as you suggest.
All the best.
Andreas

Am 11.11.2020 um 10:03 schrieb Lars Möller:

Hello Andreas,

another recommendation would be to use the python library owslib <https://geopython.github.io/OWSLib/index.html&gt; by Tom Kralidis that offers various interactions with ogc-compliant APIs including CSW. It has nice wrapper tools in owslib.utils that might support you in what you are trying to do. At least it is handling the authentication, cookie or XR…F(?) token exchange etc. and also uses the requests class for the connection.

But another thing - I wasn't aware you could add attachments to metadata entries. Is the attachment you want to download really 'physically bound' to geonetwork file structure, or added via a reference? If so, you could first extract its link from the metadata entry and then download from the linked resource.

Cheers,
Lars

Am 10.11.20 um 16:45 schrieb Andreas Böhme:

Hi guys,
I am currently trying to access my Geonetwork via python. I want to write a short script that dwonloads an attachment from a geonetwork entry of which I know the UUID. Sounds not too cmplicated but I can not manage the Login to the site.
Here is the code I use:

from requestsimport Sessionwith Session()as s:
token ="***" login_data = {"username":"***","password":"***","csrf_token": token}
#print(login_data) s.post("https://***/geonetwork/srv/ger/catalog.signin", login_data)
r = s.get("https://***/geonetwork/srv/api/records/UUID/attachments/***.zip") #print(r.status_code) #print(r.headers['content-type']) #print(r.encoding) I always get a 403 error message and do not have any clue why it is not working. I am no experienced programmer so any help would be really appreciated. Many thx and all the best Andreas

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GeoNetwork-users mailing list
GeoNetwork-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/geonetwork-users
GeoNetwork OpenSource is maintained at http://sourceforge.net/projects/geonetwork

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