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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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Thanks, Ethan! It's so cool to see toolsUI can access NASA HDF-EOS5 on S3. I hope both IDV and Panoply can use the new netCDF-Java soon, too. By the way, will the master branch of THREDDS use the latest netCDF-java? If not, where should I modify in the THREDDS source code to build THREDDS with netCDF-Java snapshot? I'm very excited to try the new THREDDS catalog with S3 datasetRoot path! Sincerely, -- Datafy everything in HDF for faster AI. On Wed, Mar 4, 2020 at 10:52 AM Ethan Davis <edavis@xxxxxxxx> wrote: > Hi Joe, > > [Sorry for the delayed response.] > > The S3 work moved to the Unidata/netCDF-java repo in PR #173 > <https://github.com/Unidata/netcdf-java/pull/173> ("S3 Support"). This PR > got merged into master a week or so ago and is available in the netCDF-Java > 5.3.0-SNAPSHOT release (and will be in the upcoming 5.3.0 release). The > latest TDS code built with netCDF-Java 5.3.0-SNAPSHOT can be configured to > serve an individual netCDF file stored as an S3 object using a datasetRoot > configuration, e.g. > > <?xml version="1.0" encoding="UTF-8"?> > > <catalog name="Test TDS S3" > > xmlns="https://www.unidata.ucar.edu/namespaces/thredds/InvCatalog/v1.0"; > > xmlns:xlink="https://www.w3.org/1999/xlink"; > > xmlns:xsi="https://www.w3.org/2001/XMLSchema-instance"; > > xsi:schemaLocation=" > https://www.unidata.ucar.edu/namespaces/thredds/InvCatalog/v1.0 > > https://www.unidata.ucar.edu/schemas/thredds/InvCatalog.1.0.6.xsd";> > > <datasetRoot path="s3-test" location="s3://noaa-goes16" /> > > <dataset name="Test GOES-16 S3" ID="testS3Grid" > > > > urlPath="s3-test/ABI-L1b-RadC/2019/363/21/OR_ABI-L1b-RadC-M6C16_G16_s20193632101189_e20193632103574_c20193632104070.nc" > > dataType="Grid"/> > > </catalog> > > In this case, the datasetRoot location is the bucket name, and the urlPath > is the datasetRoot path combined with the key. We rely on the AWS Java SDK > (v2) to handle credentials, setting of region, etc. For now, you can set > the region by creating a credentials file ~/.aws/credentials that looked > like: > > [default] > > region=us-east-1 > > Which is how netCDF-java knows which region to use for bucket access. We > may look at other mechanisms to make that a bit more integrated into TDS > configuration but for now that should work. > > Once the netCDF 5.3.0 release comes out, TDS snapshot builds will be built > with this capability. For now, you would need to build the TDS and > explicitly tell it to build with netCDF-Java 5.3.0-SNAPSHOT. > > Cheers, > > Ethan > > On Tue, Feb 4, 2020 at 2:30 PM H. Joe Lee <hyoklee@xxxxxxxxxxxx> wrote: > >> Hi, >> >> Is it possible to serve netCDF data on AWS S3 using THREDDS? >> I think it seems possible based on the S3 feature branch [1]. >> >> If so, can someone share an example THREDDS catalog configuration? >> >> Regards, >> >> [1] https://github.com/Unidata/thredds/tree/feature/s3+hdfs >> >> >> _______________________________________________ >> NOTE: All exchanges posted to Unidata maintained email lists are >> recorded in the Unidata inquiry tracking system and made publicly >> available through the web. Users who post to any of the lists we >> maintain are reminded to remove any personal information that they >> do not want to be made public. >> >> >> thredds mailing list >> thredds@xxxxxxxxxxxxxxxx >> For list information or to unsubscribe, visit: >> https://www.unidata.ucar.edu/mailing_lists/ >> >
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