These filesystem plugins are intended to demonstrate the ability to have an S3 bucket or raw HTTP server as an underlying "filesystem" for an XRootD server.
They are currently quite experimental, aiming to show a "minimum viable product".
Assuming XRootD, CMake>=3.13 and gcc>=8 are already installed, run:
mkdir build
cd build
cmake ..
make install
If building XRootD from source instead, add -DXROOTD_DIR to the CMake command line
to point it at the installed directory.
To configure the HTTP server plugin, add the following line to the Xrootd configuration file:
ofs.osslib </path/to/libXrdHTTPServer.so>
Here's a minimal config file
###########################################################################
# This is a very simple sample configuration file sufficient to start an #
# xrootd file caching proxy server using the default port 1094. This #
# server runs by itself (stand-alone) and does not assume it is part of a #
# cluster. You can then connect to this server to access files in '/tmp'. #
# Consult the the reference manuals on how to create more complicated #
# configurations. #
# #
# On successful start-up you will see 'initialization completed' in the #
# last message. You can now connect to the xrootd server. #
# #
# Note: You should always create a *single* configuration file for all #
# daemons related to xrootd. #
###########################################################################
# The adminpath and pidpath variables indicate where the pid and various
# IPC files should be placed. These can be placed in /tmp for a developer-
# quality server.
#
all.adminpath /var/spool/xrootd
all.pidpath /run/xrootd
# Enable the HTTP protocol on port 1094 (same as the default XRootD port):
xrd.protocol http:1094 libXrdHttp.so
# Allow access to path with given prefix.
#
all.export </exported/server/prefix>
# Setting up HTTP plugin
ofs.osslib libXrdHTTPServer.so
# Use this if libXrdHTTPServer.so is in a development directory
# ofs.osslib /path/to/libXrdHTTPServer.so
# Upon last testing, the plugin did not yet work in async mode
xrootd.async off
# Configure the upstream HTTP server that XRootD is to treat as a filesystem
httpserver.host_name <hostname of HTTP server>
httpserver.host_url <host url>
To configure the S3 plugin, add the following line to the Xrootd configuration file:
ofs.osslib </path/to/libXrdS3.so>
Here's a minimal config file
###########################################################################
# This is a very simple sample configuration file sufficient to start an #
# xrootd file caching proxy server using the default port 1094. This #
# server runs by itself (stand-alone) and does not assume it is part of a #
# cluster. You can then connect to this server to access files in '/tmp'. #
# Consult the the reference manuals on how to create more complicated #
# configurations. #
# #
# On successful start-up you will see 'initialization completed' in the #
# last message. You can now connect to the xrootd server. #
# #
# Note: You should always create a *single* configuration file for all #
# daemons related to xrootd. #
###########################################################################
# The adminpath and pidpath variables indicate where the pid and various
# IPC files should be placed. These can be placed in /tmp for a developer-
# quality server.
#
all.adminpath /var/spool/xrootd
all.pidpath /run/xrootd
# Enable the HTTP protocol on port 1094 (same as the default XRootD port):
xrd.protocol http:1094 libXrdHttp.so
# Allow access to path with given prefix.
#
all.export </exported/server/prefix>
# Setting up S3 plugin
ofs.osslib libXrdS3.so
# Use this if libXrdS3.so is in a development directory
# ofs.osslib /path/to/libXrdS3.so
# Upon last testing, the plugin did not yet work in async mode
xrootd.async off
# Configure the upstream HTTP server that XRootD is to treat as a filesystem
s3.service_name <s3 service name, eg s3.amazonaws.com>
s3.region <s3 region, eg us-east-1>
s3.service_url <s3 service url, eg https://s3.us-east-1.amazonaws.com>
# For buckets requiring an access/secret key:
# s3.access_key_file </path/to/access_key>
# s3.secret_key_file </path/to/secret_key>
Assuming you named the config file xrootd-http.cfg, as a non-rootly user run:
xrootd -d -c xrootd-http.cfg
In a separate terminal, run
curl -v http://localhost:1094/<host name>/<URL path to object>
Assuming you named the config file xrootd-s3.cfg, as a non-rootly user run:
xrootd -d -c xrootd-s3.cfg
In a separate terminal, run
curl -v http://localhost:1094/<service_name>/<region>/<path to bucket/object>
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