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/*
* Copyright 2017, OpenCensus Authors
*
* 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 io.opencensus.implcore.tags;
import static com.google.common.base.Preconditions.checkNotNull;
import io.opencensus.common.Scope;
import io.opencensus.tags.TagContextBuilder;
import io.opencensus.tags.TagKey;
import io.opencensus.tags.TagValue;
import java.util.HashMap;
import java.util.Map;
final class TagContextBuilderImpl extends TagContextBuilder {
private final Map<TagKey, TagValue> tags;
TagContextBuilderImpl(Map<TagKey, TagValue> tags) {
this.tags = new HashMap<TagKey, TagValue>(tags);
}
TagContextBuilderImpl() {
this.tags = new HashMap<TagKey, TagValue>();
}
@Override
public TagContextBuilderImpl put(TagKey key, TagValue value) {
return setInternal(key, checkNotNull(value, "value"));
}
private TagContextBuilderImpl setInternal(TagKey key, TagValue value) {
tags.put(checkNotNull(key), value);
return this;
}
@Override
public TagContextBuilderImpl remove(TagKey key) {
tags.remove(key);
return this;
}
@Override
public TagContextImpl build() {
return new TagContextImpl(tags);
}
@Override
public Scope buildScoped() {
return CurrentTagContextUtils.withTagContext(build());
}
}
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