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Never cache microscope state

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This commit is contained in:
Joel Collins 2020-07-01 15:50:31 +01:00
parent 6c0017be5a
commit d9fd00b255
1 changed files with 26 additions and 18 deletions
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44
openflexure_microscope/microscope.py
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@ -298,33 +298,41 @@ class Microscope:
def force_get_metadata(self): def force_get_metadata(self):
""" """
Microscope system metadata, to be applied to basically all captures Read cachable bits of microscope metadata.
Currently ID, settings, and configuration can be cached
""" """
settings = self.read_settings(full=False)
state = self.state
configuration = self.configuration
system_metadata = { system_metadata = {
"id": self.id, "id": self.id,
"settings": settings, "settings": self.read_settings(full=False),
"state": state, "configuration": self.get_configuration(),
"configuration": configuration,
} }
return system_metadata return system_metadata
def get_metadata(self, cache_key=None): def get_metadata(self, cache_key=None):
logging.debug(f"Looking for cache key {cache_key}") """
Read microscope metadata, with partial caching
"""
metadata = {}
# Load cached bits of metadata
if cache_key: if cache_key:
cached_metadata = self.metadata_cache.get(cache_key, None) logging.debug(f"Reading cached microscope metadata: {cache_key}")
if cached_metadata: metadata = self.metadata_cache.get(cache_key, None)
logging.debug(f"Reusing cached microscope metadata: {cache_key}") if not metadata:
return cached_metadata logging.debug(f"Building and caching microscope metadata: {cache_key}")
else: metadata = self.force_get_metadata()
full_metadata = self.force_get_metadata() self.metadata_cache[cache_key] = metadata
self.metadata_cache[cache_key] = full_metadata else:
return full_metadata logging.debug(f"Building microscope metadata: {cache_key}")
logging.debug("Generating full microscope metadata") metadata = self.force_get_metadata()
return self.force_get_metadata()
# Keys that should never be cached
metadata.update({
"state": self.state,
})
return metadata
@property @property
def metadata(self): def metadata(self):