op-challenger: Support file: URLs to download prestates from. #12441
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Inphi
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…for all game types at once.
Allow specify both prestate and prestates url to allow overriding. Prestate takes priority.
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Makes it possible to support multiple prestates without needing a HTTP server.
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…um-optimism#12441) * op-challenger: Introduce --prestates-url to specify prestates source for all game types at once. * op-challenger: Add required config validation for asterisc kona. Allow specify both prestate and prestates url to allow overriding. Prestate takes priority. * op-challenger: Introduce vm-flag to make default with overrides pattern easier. * op-challenger: Add vm type info to override flags. * op-challenger: Support file: URLs to download prestates from. Makes it possible to support multiple prestates without needing a HTTP server.
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Description
Support file: URLs to download prestates from.
Makes it possible to support multiple prestates without needing a HTTP server.
The source file URL is still treated as a remote source and a copy made into the data-dir. This isn't strictly necessary but it keeps the code reasonably simple and accommodates things like network file systems where caching may still be beneficial.
Tests
Added unit tests.
Builds on #12440 to avoid conflicts.