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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model.container.component;
import java.util.Comparator;
import java.util.Objects;
import java.util.Optional;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* URI binding pattern used by filter and handler bindings.
*
* @author bjorncs
*/
public abstract class BindingPattern implements Comparable<BindingPattern> {
private static final Pattern BINDING_PATTERN =
Pattern.compile("([^:]+)://([^:/]+)(:((\\*)|([0-9]+)))?(/.*)", Pattern.UNICODE_CASE | Pattern.CANON_EQ);
public static final String WILDCARD_PATTERN = "*";
private final String scheme;
private final String host;
private final String port;
private final String path;
protected BindingPattern(
String scheme,
String host,
String port,
String path) {
this.scheme = Objects.requireNonNull(scheme, "Scheme in binding must be specified");
this.host = Objects.requireNonNull(host, "Host must be specified");
this.port = port;
this.path = validatePath(path);
}
protected BindingPattern(String binding) {
Matcher matcher = BINDING_PATTERN.matcher(binding);
if (!matcher.matches()) throw new IllegalArgumentException("Invalid binding: " + binding);
this.scheme = matcher.group(1);
this.host = matcher.group(2);
this.port = matcher.group(4);
this.path = matcher.group(7);
}
private static String validatePath(String path) {
Objects.requireNonNull(path, "Path must be specified");
if (!path.startsWith("/")) throw new IllegalArgumentException("Path must have '/' as prefix: " + path);
return path;
}
public String scheme() { return scheme; }
public String host() { return host; }
public Optional<String> port() { return Optional.ofNullable(port); }
public String path() { return path; }
public String patternString() {
StringBuilder builder = new StringBuilder(scheme).append("://").append(host);
if (port != null) {
builder.append(':').append(port);
}
return builder.append(path).toString();
}
public String originalPatternString() {
StringBuilder builder = new StringBuilder(scheme).append("://").append(host);
originalPort().ifPresent(port -> builder.append(':').append(port));
return builder.append(path).toString();
}
/** Compares the underlying pattern string for equality */
public boolean hasSamePattern(BindingPattern other) { return this.patternString().equals(other.patternString()); }
/** Returns true if pattern will match any port (if present) in uri **/
public boolean matchesAnyPort() { return originalPort().filter(p -> !p.equals(WILDCARD_PATTERN)).isEmpty(); }
public Optional<String> originalPort() {
return port();
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
BindingPattern that = (BindingPattern) o;
return Objects.equals(scheme, that.scheme) &&
Objects.equals(host, that.host) &&
Objects.equals(port, that.port) &&
Objects.equals(path, that.path);
}
@Override public int hashCode() { return Objects.hash(scheme, host, port, path); }
@Override
public int compareTo(BindingPattern o) {
return Comparator.comparing(BindingPattern::scheme)
.thenComparing(BindingPattern::host)
.thenComparing(pattern -> pattern.port().orElse(null))
.thenComparing(BindingPattern::path)
.compare(this, o);
}
}
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