io.deephaven.uri.resolver.UriResolvers Maven / Gradle / Ivy
/**
* Copyright (c) 2016-2022 Deephaven Data Labs and Patent Pending
*/
package io.deephaven.uri.resolver;
import java.net.URI;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
public final class UriResolvers {
private final Set resolvers;
private final Map> map;
public UriResolvers(Set resolvers) {
this.resolvers = Objects.requireNonNull(resolvers);
map = new HashMap<>();
for (UriResolver resolver : resolvers) {
for (String scheme : resolver.schemes()) {
final Set set = map.computeIfAbsent(scheme, s -> new HashSet<>());
set.add(resolver);
}
}
}
public Set resolvers() {
return resolvers;
}
public Optional find(Class clazz) {
return resolvers()
.stream()
.filter(t -> clazz.equals(t.getClass()))
.map(clazz::cast)
.findFirst();
}
public UriResolver resolver(URI uri) {
final List resolvers = map.getOrDefault(uri.getScheme(), Collections.emptySet())
.stream()
.filter(t -> t.isResolvable(uri))
.collect(Collectors.toList());
if (resolvers.isEmpty()) {
throw new UnsupportedOperationException(
String.format("Unable to find resolver for uri '%s'", uri));
} else if (resolvers.size() > 1) {
final String classes = resolvers.stream()
.map(UriResolver::getClass)
.map(Class::toString)
.collect(Collectors.joining(",", "[", "]"));
throw new UnsupportedOperationException(
String.format("Found multiple resolvers for uri '%s': %s", uri, classes));
}
return resolvers.get(0);
}
public Object resolve(URI uri) throws InterruptedException {
return resolver(uri).resolve(uri);
}
}