/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.facebook.presto.resourceGroups;
import com.facebook.presto.spi.resourceGroups.SelectionContext;
import com.fasterxml.jackson.annotation.JsonCreator;
import java.util.Objects;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import static com.google.common.base.Preconditions.checkArgument;
import static java.util.Objects.requireNonNull;
public class ResourceGroupNameTemplate
{
private static final Pattern USER_PATTERN = Pattern.compile(Pattern.quote("${USER}"));
private static final Pattern SOURCE_PATTERN = Pattern.compile(Pattern.quote("${SOURCE}"));
private static final Pattern PARAMETER_PATTERN = Pattern.compile("\\$\\{(.*?)\\}");
private final String name;
@JsonCreator
public ResourceGroupNameTemplate(String name)
{
this.name = requireNonNull(name, "name is null");
checkArgument(!name.isEmpty(), "Resource group name is empty");
checkArgument(name.indexOf('.') < 0, "Invalid resource group name. '%s' contains a '.'", name);
Matcher matcher = PARAMETER_PATTERN.matcher(name);
while (matcher.find()) {
String group = matcher.group(1);
checkArgument(group.equals("USER") || group.equals("SOURCE"), "Unsupported template parameter: ${%s}", group);
}
}
public String expandTemplate(SelectionContext context)
{
String expanded = USER_PATTERN.matcher(name).replaceAll(context.getUser());
return SOURCE_PATTERN.matcher(expanded).replaceAll(context.getSource().orElse(""));
}
@Override
public String toString()
{
return name;
}
@Override
public boolean equals(Object o)
{
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
ResourceGroupNameTemplate that = (ResourceGroupNameTemplate) o;
return Objects.equals(name, that.name);
}
@Override
public int hashCode()
{
return Objects.hash(name);
}
}