|
| 1 | +// Copyright (c) 2023 - Restate Software, Inc., Restate GmbH |
| 2 | +// |
| 3 | +// This file is part of the Restate Java SDK, |
| 4 | +// which is released under the MIT license. |
| 5 | +// |
| 6 | +// You can find a copy of the license in file LICENSE in the root |
| 7 | +// directory of this repository or package, or at |
| 8 | +// https://github.com/restatedev/sdk-java/blob/main/LICENSE |
| 9 | +package dev.restate.sdk.core; |
| 10 | + |
| 11 | +import com.google.protobuf.ByteString; |
| 12 | +import com.google.protobuf.MessageLite; |
| 13 | +import dev.restate.sdk.common.InvocationId; |
| 14 | +import dev.restate.sdk.common.TerminalException; |
| 15 | +import dev.restate.sdk.common.syscalls.DeferredResult; |
| 16 | +import dev.restate.sdk.common.syscalls.EnterSideEffectSyscallCallback; |
| 17 | +import dev.restate.sdk.common.syscalls.ExitSideEffectSyscallCallback; |
| 18 | +import dev.restate.sdk.common.syscalls.SyscallCallback; |
| 19 | +import io.grpc.MethodDescriptor; |
| 20 | +import java.time.Duration; |
| 21 | +import java.util.Map; |
| 22 | +import java.util.concurrent.Executor; |
| 23 | +import java.util.function.Function; |
| 24 | + |
| 25 | +class ExecutorSwitchingSyscalls implements SyscallsInternal { |
| 26 | + |
| 27 | + private final SyscallsInternal syscalls; |
| 28 | + private final Executor syscallsExecutor; |
| 29 | + |
| 30 | + ExecutorSwitchingSyscalls(SyscallsInternal syscalls, Executor syscallsExecutor) { |
| 31 | + this.syscalls = syscalls; |
| 32 | + this.syscallsExecutor = syscallsExecutor; |
| 33 | + } |
| 34 | + |
| 35 | + @Override |
| 36 | + public <T extends MessageLite> void pollInput( |
| 37 | + Function<ByteString, T> mapper, SyscallCallback<DeferredResult<T>> callback) { |
| 38 | + syscallsExecutor.execute(() -> syscalls.pollInput(mapper, callback)); |
| 39 | + } |
| 40 | + |
| 41 | + @Override |
| 42 | + public <T extends MessageLite> void writeOutput(T value, SyscallCallback<Void> callback) { |
| 43 | + syscallsExecutor.execute(() -> syscalls.writeOutput(value, callback)); |
| 44 | + } |
| 45 | + |
| 46 | + @Override |
| 47 | + public void writeOutput(TerminalException throwable, SyscallCallback<Void> callback) { |
| 48 | + syscallsExecutor.execute(() -> syscalls.writeOutput(throwable, callback)); |
| 49 | + } |
| 50 | + |
| 51 | + @Override |
| 52 | + public void get(String name, SyscallCallback<DeferredResult<ByteString>> callback) { |
| 53 | + syscallsExecutor.execute(() -> syscalls.get(name, callback)); |
| 54 | + } |
| 55 | + |
| 56 | + @Override |
| 57 | + public void clear(String name, SyscallCallback<Void> callback) { |
| 58 | + syscallsExecutor.execute(() -> syscalls.clear(name, callback)); |
| 59 | + } |
| 60 | + |
| 61 | + @Override |
| 62 | + public void set(String name, ByteString value, SyscallCallback<Void> callback) { |
| 63 | + syscallsExecutor.execute(() -> syscalls.set(name, value, callback)); |
| 64 | + } |
| 65 | + |
| 66 | + @Override |
| 67 | + public void sleep(Duration duration, SyscallCallback<DeferredResult<Void>> callback) { |
| 68 | + syscallsExecutor.execute(() -> syscalls.sleep(duration, callback)); |
| 69 | + } |
| 70 | + |
| 71 | + @Override |
| 72 | + public <T, R> void call( |
| 73 | + MethodDescriptor<T, R> methodDescriptor, |
| 74 | + T parameter, |
| 75 | + SyscallCallback<DeferredResult<R>> callback) { |
| 76 | + syscallsExecutor.execute(() -> syscalls.call(methodDescriptor, parameter, callback)); |
| 77 | + } |
| 78 | + |
| 79 | + @Override |
| 80 | + public <T> void backgroundCall( |
| 81 | + MethodDescriptor<T, ?> methodDescriptor, |
| 82 | + T parameter, |
| 83 | + Duration delay, |
| 84 | + SyscallCallback<Void> requestCallback) { |
| 85 | + syscallsExecutor.execute( |
| 86 | + () -> syscalls.backgroundCall(methodDescriptor, parameter, delay, requestCallback)); |
| 87 | + } |
| 88 | + |
| 89 | + @Override |
| 90 | + public void enterSideEffectBlock(EnterSideEffectSyscallCallback callback) { |
| 91 | + syscallsExecutor.execute(() -> syscalls.enterSideEffectBlock(callback)); |
| 92 | + } |
| 93 | + |
| 94 | + @Override |
| 95 | + public void exitSideEffectBlock(ByteString toWrite, ExitSideEffectSyscallCallback callback) { |
| 96 | + syscallsExecutor.execute(() -> syscalls.exitSideEffectBlock(toWrite, callback)); |
| 97 | + } |
| 98 | + |
| 99 | + @Override |
| 100 | + public void exitSideEffectBlockWithTerminalException( |
| 101 | + TerminalException toWrite, ExitSideEffectSyscallCallback callback) { |
| 102 | + syscallsExecutor.execute( |
| 103 | + () -> syscalls.exitSideEffectBlockWithTerminalException(toWrite, callback)); |
| 104 | + } |
| 105 | + |
| 106 | + @Override |
| 107 | + public void awakeable(SyscallCallback<Map.Entry<String, DeferredResult<ByteString>>> callback) { |
| 108 | + syscallsExecutor.execute(() -> syscalls.awakeable(callback)); |
| 109 | + } |
| 110 | + |
| 111 | + @Override |
| 112 | + public void resolveAwakeable( |
| 113 | + String id, ByteString payload, SyscallCallback<Void> requestCallback) { |
| 114 | + syscallsExecutor.execute(() -> syscalls.resolveAwakeable(id, payload, requestCallback)); |
| 115 | + } |
| 116 | + |
| 117 | + @Override |
| 118 | + public void rejectAwakeable(String id, String reason, SyscallCallback<Void> requestCallback) { |
| 119 | + syscallsExecutor.execute(() -> syscalls.rejectAwakeable(id, reason, requestCallback)); |
| 120 | + } |
| 121 | + |
| 122 | + @Override |
| 123 | + public <T> void resolveDeferred( |
| 124 | + DeferredResult<T> deferredToResolve, SyscallCallback<Void> callback) { |
| 125 | + syscallsExecutor.execute(() -> syscalls.resolveDeferred(deferredToResolve, callback)); |
| 126 | + } |
| 127 | + |
| 128 | + @Override |
| 129 | + public String getFullyQualifiedMethodName() { |
| 130 | + // We can read this from another thread |
| 131 | + return syscalls.getFullyQualifiedMethodName(); |
| 132 | + } |
| 133 | + |
| 134 | + @Override |
| 135 | + public InvocationState getInvocationState() { |
| 136 | + // We can read this from another thread |
| 137 | + return syscalls.getInvocationState(); |
| 138 | + } |
| 139 | + |
| 140 | + @Override |
| 141 | + public InvocationId invocationId() { |
| 142 | + // This is immutable once set |
| 143 | + return syscalls.invocationId(); |
| 144 | + } |
| 145 | + |
| 146 | + @Override |
| 147 | + public boolean isInsideSideEffect() { |
| 148 | + // We can read this from another thread |
| 149 | + return syscalls.isInsideSideEffect(); |
| 150 | + } |
| 151 | + |
| 152 | + @Override |
| 153 | + public void close() { |
| 154 | + syscallsExecutor.execute(syscalls::close); |
| 155 | + } |
| 156 | + |
| 157 | + @Override |
| 158 | + public void fail(Throwable cause) { |
| 159 | + syscallsExecutor.execute(() -> syscalls.fail(cause)); |
| 160 | + } |
| 161 | +} |
0 commit comments