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92318fdeae
The wasm engine is moved from replica::database to the query_processor. The wasm instance cache and compilation thread runner were already there, but now they're also initialized in the query_processor constructor. By moving the initialization to the constructor, we can now be certain that all wasm-related objects (wasm instance cache, compilation thread runner, and wasm engine, which was already passed in the constructor) are initialized when we try to use them because we have to use the query processor to access them anyway. The change is also motivated by the fact that we're planning to take Wasm UDFs out of experimental, after which they should stop getting special treatment. Closes #13311 * github.com:scylladb/scylladb: wasm: move wasm initialization to query_processor constructor wasm: return wasm instance cache as a reference instead of a pointer wasm: move wasm engine to query_processor