ngclient constants and configuration #1470
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The RequestsFetcher changes do not belong here IMO: RequestsFetcher is only one fetcher implementation:
- If we think these values must be supported by every implementation we should make that part of the interface, not sneak them in like this
- If these are just RequestsFetcher config, then they shouldn't be in UpdaterConfig
I would just make the requestsfetcher configuration instance attributes of RequestsFetcher: The user can always instantiate one and then modify the attributes before giving the fetcher to updater.
tuf/ngclient/config.py
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| MAX_ROOT_ROTATIONS: int = 32 | ||
| MAX_DELEGATIONS: int = 32 | ||
| DEFAULT_ROOT_MAX_LENGTH: int = 512000 # bytes | ||
| DEFAULT_TIMESTAMP_MAX_LENGTH: int = 16384 # bytes | ||
| DEFAULT_SNAPSHOT_MAX_LENGTH: int = 2000000 # bytes | ||
| DEFAULT_TARGETS_MAX_LENGTH: int = 5000000 # bytes |
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since these are now not intended to be constants or scary we can lowercase them... that removes a pylint disable as well
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yes, I did and and I think it even looks better f5b61ec Thanks for the proposal!
tuf/ngclient/updater.py
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| if config is None: | ||
| self.config = UpdaterConfig() | ||
| else: | ||
| self.config = config |
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| if config is None: | |
| self.config = UpdaterConfig() | |
| else: | |
| self.config = config | |
| self.config = config or UpdaterConfig() |
should work in this case?
Add a config module containing a dataclass UpdaterConfig with all client settings. Initialize updater with default settings if no other condig is provided. Signed-off-by: Teodora Sechkova <[email protected]>
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Looks good. I'm not super into adding optional things into the constructors... but if others like the config object pattern I'm OK with it.
We should get rid of sleep_before_round: if we're "hogging CPU" as the comment says, let's fix that instead. I don't think we are though: I'm sure requests does not require us to poll constantly. Can you file an issue on that?
| @@ -47,6 +48,11 @@ def __init__(self): | |||
| # Some cookies may not be HTTP-safe. | |||
| self._sessions = {} | |||
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| # Default settings | |||
| self.sleep_before_round: int = 4 # seconds | |||
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er, I think you mixed up sleep_before_round and socket_timeout: this is going to make life painful
tuf/ngclient/config.py
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| default_root_max_length: int = 512000 # bytes | ||
| default_timestamp_max_length: int = 16384 # bytes | ||
| default_snapshot_max_length: int = 2000000 # bytes | ||
| default_targets_max_length: int = 5000000 # bytes |
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None one of the variables should be called "default" i think -- looks a bit odd in the code since they might be set by the user and they're still called "default"?
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Maybe default makes sense for snapshot and targets where this is the value used if the one in metadata is not se but I renamed all anyway 520b344.
Since configuration constants are now part of a config class, make them lower case. This also avoids pylint's invalid-name error for class attributes. Remove the 'default' prefix as they are now configurable options. Signed-off-by: Teodora Sechkova <[email protected]>
Stop using the settings module and add the RequestsFetcher specific config as instance attributes. Users of the requests-based fetcher implementation can modify them after instantiating a RequestsFetcher object if needed. Signed-off-by: Teodora Sechkova <[email protected]>
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Fixes #1402
Description of the changes being introduced by the pull request:
Adds a new public config module
ngclient/config.py.UpdaterConfigwith all client settingsPlease verify and check that the pull request fulfills the following
requirements: