Re: help implementing OGR Postgres foreign data wrapper

[Brent Wood <Brent.Wood@xxxxxxxxxx>]

Thanks Ben,

How is life treating the AusVet these days? Been quite a few versions under the bridge since we discussed R and Postgres stuff. 2009 was it??

That kicked some quiescent brain cells into gear. I just tried it from home, where it also works fine, if a bit sluggish, which seems to be how ESRI supports open standards.

So it may be some network settings from NIWA causing the failure. At least I can kick that problem elsewhere!!!

Much appreciated.

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529

---

From: Ben Madin <ben@xxxxxxxxxxxxx>
Sent: Tuesday, October 5, 2021 20:57
To: Brent Wood <Brent.Wood@xxxxxxxxxx>
Cc: pgsql-general@xxxxxxxxxxxxxxxxxxxx <pgsql-general@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: help implementing OGR Postgres foreign data wrapper

 

Hi Brent,

not sure why, but it is working for me using ogrinfo:

~ $ ogrinfo https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer\?SERVICE\=WFS\&REQUEST\=GetCapabilities
INFO: Open of `https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer?SERVICE=WFS&REQUEST=GetCapabilities'
      using driver `WFS' successful.
Metadata:
  ABSTRACT=To develop a marine environment classification for waters in depths shallower than 3000 m within the outer boundary of the NZ 200 naut. mile EEZ  (an OGC WFS Layer).
  TITLE=WFS
1: BOMEC_15_Class_WFS:BOMEC_15_Class (title: BOMEC_15_Class) (Multi Surface)

not very helpful, but a 400 error might be some kind of encoding problem with request?

cheers

Ben

On Tue, 5 Oct 2021 at 14:18, Brent Wood <Brent.Wood@xxxxxxxxxx> wrote:

Hi,

Apologies, this not strictly a Postgres question, but Postgres is so fundamental to what I'm trying to do and this list is generally so helpful, so here I go...

I'm using FDW's to create virtual tables providing access to data from external data sources. This is working well for data in other Postgres databases using the Postgres FDW.

I also want to be able to link to data from WFS services via the OGR FDW (https://www.pgxn.org/dist/ogr_fdw/)

The first service I'm trying to connect to is:

https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer

I can retrieve the capabilities doc in a browser (test 1 passed!) and plot the data as a layer in QGIS (test 2 passed). My next step is to test OGR access via ogrinfo. This I can't seem to get working. I'm assuming I need to sort this out before trying to get the OGR_FDW working.

I've tried:

ogrinfo https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer

ogrinfo https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer?SERVICE=WFS&REQUEST=GetCapabilities

I can only get the following response

ogrinfo https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer?SERVICE=WFS&REQUEST=GetCapabilities

[1] 3121502

ERROR 1: HTTP error code : 400

ERROR 1: HTTP error code : 400

FAILURE:

Unable to open datasource `https://dservices3.arcgis.com/fp1tibNcN9mbExhG/arcgis/services/BOMEC_15_Class_WFS/WFSServer?SERVICE=WFS' with the following drivers.

  -> ESRIC

...

  -> OGR_PDS

  -> WFS

  -> OAPIF

...

Can anyone suggest what might be the problem?

Thanks.

Brent Wood

Principal Technician, Fisheries
NIWA
DDI:  +64 (4) 3860529

Brent Wood Principal Technician - GIS and Spatial Data Management Programme Leader - Environmental Information Delivery +64-4-386-0529 National Institute of Water & Atmospheric Research Ltd (NIWA) 301 Evans Bay Parade Hataitai Wellington New Zealand Connect with NIWA: niwa.co.nz Facebook LinkedIn Twitter Instagram

To ensure compliance with legal requirements and to maintain cyber security standards, NIWA's IT systems are subject to ongoing monitoring, activity logging and auditing. This monitoring and auditing service may be provided by third parties. Such third parties can access information transmitted to, processed by and stored on NIWA's IT systems

--

Dr Ben Madin

 

BVMS MVPHMgmt PhD MANZCVS GAICD

Managing Director

Mobile:

+61 448 887 220

E-mail:

ben@xxxxxxxxxxxxx

Website:

www.ausvet.com.au

Skype: benmadin

Address: 

5 Shuffrey Street
Fremantle, WA 6160
Australia