protected boolean addFunctionFromCachedRepository(
final InMemoryCompiledFunctionRepository before,
final InMemoryCompiledFunctionRepository after,
final InMemoryCompiledFunctionRepository compiled,
final FunctionDefinition function,
final Instant atInstant) {
if (before != null) {
final CompiledFunctionDefinition compiledFunction =
before.findDefinition(function.getUniqueId());
if (compiledFunction.getLatestInvocationTime() == null) {
// previous one always valid
compiled.addFunction(compiledFunction);
return true;
} else {
final Instant validUntil = Instant.of(compiledFunction.getLatestInvocationTime());
if (!validUntil.isBefore(atInstant)) {
// previous one still valid
compiled.addFunction(compiledFunction);
return true;
}
}
}
if (after != null) {
final CompiledFunctionDefinition compiledFunction =
after.findDefinition(function.getUniqueId());
if (compiledFunction.getEarliestInvocationTime() == null) {
// next one always valid
compiled.addFunction(compiledFunction);
return true;
} else {
final Instant validFrom = Instant.of(compiledFunction.getEarliestInvocationTime());
if (!validFrom.isAfter(atInstant)) {
// next one already valid
compiled.addFunction(compiledFunction);
return true;
}
}
}
return false;
}
@Override
public CompiledFunctionDefinition compile(
FunctionCompilationContext context, InstantProvider atInstantProvider) {
_compileCount.incrementAndGet();
final Instant atInstant = Instant.of(atInstantProvider);
final AbstractFunction.AbstractCompiledFunction compiled =
new AbstractFunction.AbstractCompiledFunction() {
@Override
public ComputationTargetType getTargetType() {
return null;
}
@Override
public Set<ValueSpecification> getResults(
FunctionCompilationContext context, ComputationTarget target) {
return null;
}
@Override
public Set<ValueRequirement> getRequirements(
FunctionCompilationContext context,
ComputationTarget target,
final ValueRequirement desiredValue) {
return null;
}
@Override
public FunctionInvoker getFunctionInvoker() {
return null;
}
@Override
public boolean canApplyTo(
FunctionCompilationContext context, ComputationTarget target) {
return false;
}
};
if (_validBefore != null) {
compiled.setEarliestInvocationTime(atInstant.minusMillis(_validBefore));
}
if (_validAfter != null) {
compiled.setLatestInvocationTime(atInstant.plusMillis(_validAfter));
}
return compiled;
}
@Override
public CompiledFunctionRepository compile(
final FunctionRepository repository,
final FunctionCompilationContext context,
final ExecutorService executor,
final InstantProvider atInstantProvider) {
clearInvalidCache(context.getFunctionInitId());
final Instant atInstant = Instant.of(atInstantProvider);
final Pair<FunctionRepository, Instant> key = Pair.of(repository, atInstant);
// Try a previous compilation
final InMemoryCompiledFunctionRepository previous = getPreviousCompilation(key);
if (previous != null) {
if (previous.getLatestInvocationTime() == null) {
return previous;
} else {
if (!atInstant.isAfter(previous.getLatestInvocationTime())) {
return previous;
}
}
}
// Try a future compilation
final InMemoryCompiledFunctionRepository next = getNextCompilation(key);
if (next != null) {
if (next.getEarliestInvocationTime() == null) {
return next;
} else {
if (!atInstant.isBefore(next.getEarliestInvocationTime())) {
return next;
}
}
}
// Try the exact timestamp
InMemoryCompiledFunctionRepository compiled = getCachedCompilation(key);
if (compiled != null) {
return compiled;
}
// Create a compilation, salvaging results from previous and next if possible
compiled = compile(context, repository, atInstant, previous, next, executor);
cacheCompilation(key, compiled);
return compiled;
}