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Add infrastructure for automated expiration of storage entries

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This is used for backends that don't support expiration natively.
This commit is contained in:
Tim Wojtulewicz 2024-12-06 15:29:15 -07:00
parent 8dee733a7d
commit d07d27453a
12 changed files with 96 additions and 21 deletions
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6
scripts/base/frameworks/storage/main.zeek
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@ -16,6 +16,10 @@ export {
# Indicates whether this value should overwrite an existing entry
# for the key.
overwrite: bool &default=T;
# An interval of time until the entry is automatically removed from the
# backend.
expire_time: interval &default=0sec;
};
## Opens a new backend connection based on a configuration object.
@ -95,7 +99,7 @@ function close_backend(backend: opaque of Storage::BackendHandle): bool
function put(backend: opaque of Storage::BackendHandle, args: Storage::PutArgs): bool
{
return Storage::__put(backend, args$key, args$value, args$overwrite);
return Storage::__put(backend, args$key, args$value, args$overwrite, args$expire_time);
}
function get(backend: opaque of Storage::BackendHandle, key: any): any

8
scripts/base/init-bare.zeek
View file

@ -6210,6 +6210,14 @@ export {
};
}
module Storage;
export {
## The interval used by the storage framework for automatic expiration
## of elements in all backends that don't support it natively.
const expire_interval = 5.0 secs &redef;
}
module GLOBAL;
@load base/bif/event.bif