lakesuperior_legacy/lakesuperior/etc.defaults/application.yml

# Default repository configuration.
#
# Copy this file or parts of it in a separate location to override these
# settings. Individual items can be selectively overridden as long as the YAML
# hierarchical structure is kept.

# Set app_mode to either 'prod', 'test' or 'dev'.
# 'prod' is normal running mode. 'test' is used for running test suites.
# 'dev' is similar to normal mode but with reload and debug enabled.
app_mode: 'prod'

# Base data directory. This contains both volatile files such as PID files,
# and persistent ones, such as resource data. LDP-NRs will be stored under
# <basedir>/ldpnr_store and LDP-RSs under <basedir>/ldprs_store.
#
# If different data files need to be running on different storage hardware,
# the individual subdirectories can be mounted on different file systems.
#
# If unset, it will default to <lakesuperior package root>/data.
data_dir:

# Configuration for binary path and fixity check generation. The hash is a
# checksumn of the contents of the file.
uuid:
    # Algorithm used to calculate the hash that generates the content path.
    # This can be any one of the Python hashlib functions:
    # https://docs.python.org/3/library/hashlib.html
    #
    # This needs to be ``sha1`` if a compatibility with the Fedora4 file layout
    # is needed, however in security-sensitive environments it is strongly
    # advised to use a stronger algorithm, since SHA1 is known to be
    # vulnerable to counterfeiting: see https://shattered.io/
    #
    # `blake2b` is a strong, fast cryptographic alternative to SHA2/3:
    # https://blake2.net/
    algo: sha1

# Data store configuration.
store:
    # The semantic store used for persisting LDP-RS (RDF Source) resources.
    # MUST support SPARQL 1.1 query and update.
    ldp_rs:
        # store layout. At the moment, only `rsrc_centric_layout`is supported.
        layout: rsrc_centric_layout

        # whether to check if the object of a client-provided triple is the uri
        # of a repository-managed resource and veify if that exists.
        # if set to false, properties are allowed to point to resources in the
        # repositoy that do not exist. also, if a resource is deleted, inbound
        # relationships may not be cleaned up.
        # this can be one of `False` (boolean), `lenient` or `strict`. `False`
        # does not check for referential integrity. `lenient` quietly drops a
        # user-provided triple if its object violates referential integrity.
        # `strict` raises an exception.
        #
        # Changes to this parameter require a full migration.
        referential_integrity: lenient

        # this mimics Fedora4 behavior which segments an identifier on POST.
        legacy_ptree_split: False

    # The path used to persist LDP-NR (bitstreams).
    # This is for now a POSIX filesystem. Other solutions such as HDFS may be
    # possible in the future.
    ldp_nr:
        # See store.ldp_rs.layout.
        layout: default_layout

        # How to split the balanced pairtree to generate a path. The hash
        # string is defined by the uuid.algo parameter value.
        # This parameter defines how many characters are in each branch. 2-4 is
        # the recommended setting. NOTE: a value of 2 will generate up to 256
        # sub-folders in a folder; 3 will generate max. 4096 and 4 will
        # generate max. 65536. Check your filesystem capabilities before
        # setting this to a non-default value.
        #
        # Changes to this parameter require a full migration.
        pairtree_branch_length: 2

        # Max. number of branches to generate. 0 will split the string until
        # it reaches the end.
        # E.g. if the hash value is 0123456789abcdef01234565789abcdef and the
        # branch length value is 2, and the branch number is 4, the path will
        # be 01/23/45/67/89abcdef01234565789abcdef. For a value of 0 it will be
        # 01/23/45/67/89/ab/cd/ef/01/23/45/67/89/ab/cd/ef. Be aware that deeply
        # nested directory structures may tax some of the operating system's
        # services that scan for files, such as `updatedb`. Check your system
        # capabilities for maximum nested directories before changing the
        # default.
        #
        # Changes to this parameter require a full migration.
        pairtree_branches: 4

# Configuration for messaging.
messaging:
    # List of channels to send messages to.
    # Each channel must define the `endpoint` and the `level` parameters.
    routes:
          # Output handler. Currently only `StompHandler` is supported.
        - handler: StompHandler

          # Whether this route is used. It False, no messages will be emitted
          # for this route.
          active: True

          # Protocol version. One of `10`, `11` or `12`.
          protocol: '11'
          host: 127.0.0.1
          port: 61613

          # Credentials are optional.
          username:
          password:
          destination: '/topic/fcrepo'

          # Message format: at the moment the following are supported:
          # - `ASResourceFormatter`: Sends information about a resource being
          #   created, updated or deleted, by who and when, with no further
          #   information about what changed.
          # - `ASDeltaFormatter`: Sends the same information as
          #   `ASResourceFormatter` with the addition of the triples that were
          #   added and the ones that were removed in the request. This may be
          #   used to send rich provenance data to a preservation system.
          formatter: ASResourceFormatter