diff --git a/src/exdf/cli/reduce.py b/src/exdf/cli/reduce.py
index 61ade73f78e86285efbc101d11a23e997f6d28a5..0a192bb6d365396b07ebf0600d1a76527e654b15 100644
--- a/src/exdf/cli/reduce.py
+++ b/src/exdf/cli/reduce.py
@@ -12,7 +12,7 @@ import sys
from pkg_resources import iter_entry_points
from extra_data import RunDirectory, open_run
-from ..data_reduction.red_writer import ReduceWriter
+from ..data_reduction.red_writer import ReduceWriter, ReduceInitError
def _parse_args(argv):
@@ -212,9 +212,12 @@ def main(argv=None):
if args.to_recipe:
_to_recipe(args.to_recipe, methods, inp_data, argv)
- writer = ReduceWriter(
- inp_data, methods,
- args.output_scope, args.output_sequence_len, args.output_version)
+ try:
+ writer = ReduceWriter(inp_data, methods, args.output_scope,
+ args.output_sequence_len, args.output_version)
+ except ReduceInitError:
+ log.critical('Failed to initialize reduction writer')
+ return
if args.output_scope == 'none':
log.info('Not writing out any data files')
diff --git a/src/exdf/data_reduction/red_writer.py b/src/exdf/data_reduction/red_writer.py
index 1695d77f187a0faf7921673be504f742901636e4..307453b04fd005bfb49bc4e2eef4741f419804dd 100644
--- a/src/exdf/data_reduction/red_writer.py
+++ b/src/exdf/data_reduction/red_writer.py
@@ -45,6 +45,12 @@ def apply_by_key(op_name):
return op_decorator
+class ReduceInitError(RuntimeError):
+ def __init__(self, msg):
+ super().__init__(msg)
+ ReduceWriter.log.error(msg)
+
+
class ReduceWriter(SourceDataWriter):
log = logging.getLogger('exdf.data_reduction.ReduceWriter')
@@ -59,8 +65,8 @@ class ReduceWriter(SourceDataWriter):
input_version = Version(metadata.get('dataFormatVersion', '1.0'))
if input_version < Version('1.0'):
- raise ValueError('Currently input files are required to be '
- 'EXDF-v1.0+')
+ raise ReduceInitError('Currently input files are required to be '
+ 'EXDF-v1.0+')
if version == 'same':
version = input_version
@@ -70,7 +76,8 @@ class ReduceWriter(SourceDataWriter):
try:
self.run_number = int(metadata['runNumber'])
except KeyError:
- raise ValueError('runNumber dataset required in input METADATA')
+ raise ReduceInitError('runNumber dataset required to be present '
+ 'in input METADATA')
self._ops = sum(methods.values(), [])
@@ -106,14 +113,13 @@ class ReduceWriter(SourceDataWriter):
custom_entry_sources = {x[0] for x in self._custom_entry_masks.keys()}
if custom_entry_sources & self._custom_xtdf_masks.keys():
- raise ValueError(
- 'Source may not be affected by both select-entries and '
- 'select-xtdf operations')
+ raise ReduceInitError('Source may not be affected by both '
+ 'select-entries and select-xtdf operations')
if self._rechunked_keys.keys() & self._compressed_keys.keys():
- raise ValueError('Key may not be affected by both '
- 'compress-keys and rechunk-keys')
+ raise ReduceInitError('Key may not be affected by both '
+ 'compress-keys and rechunk-keys')
if self._scope == 'sources':
self._sources = sorted(
@@ -128,8 +134,8 @@ class ReduceWriter(SourceDataWriter):
if (self._data[source].aggregator in touched_aggregators)})
if not self._sources:
- raise ValueError('reduction sequence yields empty source '
- 'selection')
+ raise ReduceInitError('Reduction operations and output scope '
+ 'yield an empty dataset')
def _filter_ops(self, op):
return [args[1:] for args in self._ops if args[0] == op]
@@ -158,8 +164,8 @@ class ReduceWriter(SourceDataWriter):
if count == 0:
continue
elif max_entry >= count:
- raise ValueError(
- f'entry index exceeds data counts of train {train_id}')
+ raise ReduceInitError(f'Entry index exceeds data counts '
+ f'of train {train_id}')
masks[train_id] = np.zeros(count, dtype=bool)
masks[train_id][entry_sel] = True
@@ -171,13 +177,13 @@ class ReduceWriter(SourceDataWriter):
if count == 0:
continue
elif mask_len != counts.get(train_id, 0):
- raise ValueError(
- f'mask length mismatch for train {train_id}')
+ raise ReduceInitError(f'Mask length mismatch for '
+ f'train {train_id}')
masks[train_id] = entry_sel
else:
- raise ValueError('unknown entry mask format')
+ raise ReduceInitError('Unknown entry mask format')
return masks
@@ -392,7 +398,7 @@ class ReduceWriter(SourceDataWriter):
@apply_by_source('select-entries')
def _handle_select_entries(self, source, idx_group, train_sel, entry_sel):
if idx_group not in self._data[source].index_groups:
- raise ValueError(f'{idx_group} not index group of {source}')
+ raise ReduceInitError(f'{idx_group} not index group of {source}')
self._custom_entry_masks.setdefault((source, idx_group), {}).update(
self._get_entry_masks(source, idx_group, train_sel, entry_sel))
@@ -405,7 +411,7 @@ class ReduceWriter(SourceDataWriter):
if not self._is_xtdf_source(source):
# Raise exception if essentials are missing.
- raise ValueError(f'{source} is not a valid XTDF source')
+ raise ReduceInitError(f'{source} is not a valid XTDF source')
self._custom_xtdf_masks.setdefault(source, {}).update(
self._get_entry_masks(source, 'image', train_sel, entry_sel))
@@ -419,7 +425,7 @@ class ReduceWriter(SourceDataWriter):
old_chunking = self._rechunked_keys.setdefault((source, key), chunking)
if old_chunking != chunking:
- raise ValueError(
+ raise ReduceInitError(
f'Reduction sequence yields conflicting chunks for '
f'{source}.{key}: {old_chunking}, {chunking}')