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/*
 * Copyright © 2012 The Feign Authors ([email protected])
 *
 * 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 feign.micrometer;

import io.micrometer.common.docs.KeyName;
import io.micrometer.observation.Observation;
import io.micrometer.observation.ObservationConvention;
import io.micrometer.observation.docs.ObservationDocumentation;

/**
 * {@link ObservationDocumentation} for Feign.
 *
 * @since 12.1
 */
public enum FeignObservationDocumentation implements ObservationDocumentation {
  DEFAULT {
    @Override
    public Class>
        getDefaultConvention() {
      return DefaultFeignObservationConvention.class;
    }

    @Override
    public KeyName[] getLowCardinalityKeyNames() {
      return HttpClientTags.values();
    }
  };

  enum HttpClientTags implements KeyName {
    STATUS {
      @Override
      public String asString() {
        return "http.status_code";
      }
    },
    METHOD {
      @Override
      public String asString() {
        return "http.method";
      }
    },
    URI {
      @Override
      public String asString() {
        return "http.url";
      }
    },
    TARGET_SCHEME {
      @Override
      public String asString() {
        return "http.scheme";
      }
    },
    TARGET_HOST {
      @Override
      public String asString() {
        return "net.peer.host";
      }
    },
    TARGET_PORT {
      @Override
      public String asString() {
        return "net.peer.port";
      }
    },
    CLIENT_NAME {
      @Override
      public String asString() {
        return "clientName";
      }
    }
  }
}