content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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.datastax.oss.driver.core;
  
  import static org.assertj.core.api.Assertions.assertThat;
  import static org.assertj.core.api.Assertions.fail;
  
  import com.datastax.dse.driver.api.core.DseProtocolVersion;
  import com.datastax.oss.driver.api.core.AllNodesFailedException;
  import com.datastax.oss.driver.api.core.CqlSession;
  import com.datastax.oss.driver.api.core.DefaultProtocolVersion;
  import com.datastax.oss.driver.api.core.ProtocolVersion;
  import com.datastax.oss.driver.api.core.UnsupportedProtocolVersionException;
  import com.datastax.oss.driver.api.core.config.DefaultDriverOption;
  import com.datastax.oss.driver.api.core.config.DriverConfigLoader;
  import com.datastax.oss.driver.api.testinfra.ccm.CcmRule;
  import com.datastax.oss.driver.api.testinfra.requirement.BackendRequirement;
  import com.datastax.oss.driver.api.testinfra.requirement.BackendType;
  import com.datastax.oss.driver.api.testinfra.session.SessionUtils;
  import com.datastax.oss.driver.categories.ParallelizableTests;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  
  /** Covers protocol negotiation for the initial connection to the first contact point. */
  @Category(ParallelizableTests.class)
  public class ProtocolVersionInitialNegotiationIT {
  
    @Rule public CcmRule ccm = CcmRule.getInstance();
  
    @BackendRequirement(
        type = BackendType.CASSANDRA,
        minInclusive = "2.1",
        maxExclusive = "2.2",
        description = "Only C* in [2.1,2.2[ has V3 as its highest version")
    @BackendRequirement(
        type = BackendType.DSE,
        maxExclusive = "5.0",
        description = "Only DSE in [*,5.0[ has V3 as its highest version")
    @Test
    public void should_downgrade_to_v3() {
      try (CqlSession session = SessionUtils.newSession(ccm)) {
        assertThat(session.getContext().getProtocolVersion().getCode()).isEqualTo(3);
        session.execute("select * from system.local");
      }
    }
  
    @BackendRequirement(
        type = BackendType.CASSANDRA,
        minInclusive = "2.2",
        maxExclusive = "4.0-rc1",
        description = "Only C* in [2.2,4.0-rc1[ has V4 as its highest version")
    @BackendRequirement(
        type = BackendType.DSE,
        minInclusive = "5.0",
        maxExclusive = "5.1",
        description = "Only DSE in [5.0,5.1[ has V4 as its highest version")
    @Test
    public void should_downgrade_to_v4() {
      try (CqlSession session = SessionUtils.newSession(ccm)) {
        assertThat(session.getContext().getProtocolVersion().getCode()).isEqualTo(4);
        session.execute("select * from system.local");
      }
    }
  
    @BackendRequirement(
        type = BackendType.CASSANDRA,
        minInclusive = "4.0-rc1",
        description = "Only C* in [4.0-rc1,*[ has V5 as its highest version")
    @Test
    public void should_downgrade_to_v5_oss() {
      try (CqlSession session = SessionUtils.newSession(ccm)) {
        assertThat(session.getContext().getProtocolVersion().getCode()).isEqualTo(5);
        session.execute("select * from system.local");
      }
    }
  
    @BackendRequirement(
        type = BackendType.DSE,
        minInclusive = "5.1",
        maxExclusive = "6.0",
        description = "Only DSE in [5.1,6.0[ has DSE_V1 as its highest version")
    @Test
    public void should_downgrade_to_dse_v1() {
      try (CqlSession session = SessionUtils.newSession(ccm)) {
        assertThat(session.getContext().getProtocolVersion()).isEqualTo(DseProtocolVersion.DSE_V1);
        session.execute("select * from system.local");
      }
    }
  
    @BackendRequirement(
        type = BackendType.CASSANDRA,
        maxExclusive = "2.2",
        description = "Only C* in [*,2.2[ has V4 unsupported")
    @BackendRequirement(
        type = BackendType.DSE,
        maxExclusive = "5.0",
        description = "Only DSE in [*,5.0[ has V4 unsupported")
    @Test
    public void should_fail_if_provided_v4_is_not_supported() {
      DriverConfigLoader loader =
          SessionUtils.configLoaderBuilder()
              .withString(DefaultDriverOption.PROTOCOL_VERSION, "V4")
              .build();
      try (CqlSession ignored = SessionUtils.newSession(ccm, loader)) {
        fail("Expected an AllNodesFailedException");
      } catch (AllNodesFailedException anfe) {
        Throwable cause = anfe.getAllErrors().values().iterator().next().get(0);
        assertThat(cause).isInstanceOf(UnsupportedProtocolVersionException.class);
        UnsupportedProtocolVersionException unsupportedException =
            (UnsupportedProtocolVersionException) cause;
        assertThat(unsupportedException.getAttemptedVersions())
            .containsOnly(DefaultProtocolVersion.V4);
      }
    }
  
    @BackendRequirement(
        type = BackendType.CASSANDRA,
        minInclusive = "2.1",
        maxExclusive = "4.0-rc1",
        description = "Only C* in [2.1,4.0-rc1[ has V5 unsupported or supported as beta")
    @BackendRequirement(
        type = BackendType.DSE,
        maxExclusive = "7.0",
        description = "Only DSE in [*,7.0[ has V5 unsupported or supported as beta")
    @Test
    public void should_fail_if_provided_v5_is_not_supported() {
      DriverConfigLoader loader =
          SessionUtils.configLoaderBuilder()
              .withString(DefaultDriverOption.PROTOCOL_VERSION, "V5")
              .build();
      try (CqlSession ignored = SessionUtils.newSession(ccm, loader)) {
        fail("Expected an AllNodesFailedException");
      } catch (AllNodesFailedException anfe) {
        Throwable cause = anfe.getAllErrors().values().iterator().next().get(0);
        assertThat(cause).isInstanceOf(UnsupportedProtocolVersionException.class);
        UnsupportedProtocolVersionException unsupportedException =
            (UnsupportedProtocolVersionException) cause;
        assertThat(unsupportedException.getAttemptedVersions())
            .containsOnly(DefaultProtocolVersion.V5);
      }
    }
  
    @BackendRequirement(
        type = BackendType.DSE,
        maxExclusive = "5.1",
        description = "Only DSE in [*,5.1[ has DSE_V1 unsupported")
    @Test
    public void should_fail_if_provided_dse_v1_is_not_supported() {
      DriverConfigLoader loader =
          SessionUtils.configLoaderBuilder()
              .withString(DefaultDriverOption.PROTOCOL_VERSION, "DSE_V1")
              .build();
      try (CqlSession ignored = SessionUtils.newSession(ccm, loader)) {
        fail("Expected an AllNodesFailedException");
      } catch (AllNodesFailedException anfe) {
        Throwable cause = anfe.getAllErrors().values().iterator().next().get(0);
        assertThat(cause).isInstanceOf(UnsupportedProtocolVersionException.class);
        UnsupportedProtocolVersionException unsupportedException =
            (UnsupportedProtocolVersionException) cause;
        assertThat(unsupportedException.getAttemptedVersions())
            .containsOnly(DseProtocolVersion.DSE_V1);
      }
    }
  
    @BackendRequirement(
        type = BackendType.DSE,
        maxExclusive = "6.0",
        description = "Only DSE in [*,6.0[ has DSE_V2 unsupported")
    @Test
    public void should_fail_if_provided_dse_v2_is_not_supported() {
      DriverConfigLoader loader =
          SessionUtils.configLoaderBuilder()
              .withString(DefaultDriverOption.PROTOCOL_VERSION, "DSE_V2")
              .build();
      try (CqlSession ignored = SessionUtils.newSession(ccm, loader)) {
        fail("Expected an AllNodesFailedException");
      } catch (AllNodesFailedException anfe) {
        Throwable cause = anfe.getAllErrors().values().iterator().next().get(0);
        assertThat(cause).isInstanceOf(UnsupportedProtocolVersionException.class);
        UnsupportedProtocolVersionException unsupportedException =
            (UnsupportedProtocolVersionException) cause;
        assertThat(unsupportedException.getAttemptedVersions())
            .containsOnly(DseProtocolVersion.DSE_V2);
      }
    }
  
    /** Note that this test will need to be updated as new protocol versions are introduced. */
    @BackendRequirement(
        type = BackendType.CASSANDRA,
        minInclusive = "4.0",
        description = "Only C* in [4.0,*[ has V5 supported")
    @Test
    public void should_not_downgrade_if_server_supports_latest_version() {
      try (CqlSession session = SessionUtils.newSession(ccm)) {
        assertThat(session.getContext().getProtocolVersion()).isEqualTo(ProtocolVersion.V5);
        session.execute("select * from system.local");
      }
    }
  
    /** Note that this test will need to be updated as new protocol versions are introduced. */
    @BackendRequirement(
        type = BackendType.DSE,
        minInclusive = "6.0",
        description = "Only DSE in [6.0,*[ has DSE_V2 supported")
    @Test
    public void should_not_downgrade_if_server_supports_latest_version_dse() {
      try (CqlSession session = SessionUtils.newSession(ccm)) {
        assertThat(session.getContext().getProtocolVersion()).isEqualTo(ProtocolVersion.DSE_V2);
        session.execute("select * from system.local");
      }
    }
  
    @BackendRequirement(
        type = BackendType.CASSANDRA,
        minInclusive = "2.1",
        description = "Only C* in [2.1,*[ has V3 supported")
    @BackendRequirement(
        type = BackendType.DSE,
        minInclusive = "4.8",
        description = "Only DSE in [4.8,*[ has V3 supported")
    @Test
    public void should_use_explicitly_provided_v3() {
      DriverConfigLoader loader =
          SessionUtils.configLoaderBuilder()
              .withString(DefaultDriverOption.PROTOCOL_VERSION, "V3")
              .build();
      try (CqlSession session = SessionUtils.newSession(ccm, loader)) {
        assertThat(session.getContext().getProtocolVersion().getCode()).isEqualTo(3);
        session.execute("select * from system.local");
      }
    }
  
    @BackendRequirement(
        type = BackendType.CASSANDRA,
        minInclusive = "2.2",
        description = "Only C* in [2.2,*[ has V4 supported")
    @BackendRequirement(
        type = BackendType.DSE,
        minInclusive = "5.0",
        description = "Only DSE in [5.0,*[ has V4 supported")
    @Test
    public void should_use_explicitly_provided_v4() {
      DriverConfigLoader loader =
          SessionUtils.configLoaderBuilder()
              .withString(DefaultDriverOption.PROTOCOL_VERSION, "V4")
              .build();
      try (CqlSession session = SessionUtils.newSession(ccm, loader)) {
        assertThat(session.getContext().getProtocolVersion().getCode()).isEqualTo(4);
        session.execute("select * from system.local");
      }
    }
  
    @BackendRequirement(
        type = BackendType.CASSANDRA,
        minInclusive = "4.0",
        description = "Only C* in [4.0,*[ has V5 supported")
    @BackendRequirement(
        type = BackendType.DSE,
        minInclusive = "7.0",
        description = "Only DSE in [7.0,*[ has V5 supported")
    @Test
    public void should_use_explicitly_provided_v5() {
      DriverConfigLoader loader =
          SessionUtils.configLoaderBuilder()
              .withString(DefaultDriverOption.PROTOCOL_VERSION, "V5")
              .build();
      try (CqlSession session = SessionUtils.newSession(ccm, loader)) {
        assertThat(session.getContext().getProtocolVersion().getCode()).isEqualTo(5);
        session.execute("select * from system.local");
      }
    }
  
    @BackendRequirement(
        type = BackendType.DSE,
        minInclusive = "5.1",
        description = "Only DSE in [5.1,*[ has DSE_V1 supported")
    @Test
    public void should_use_explicitly_provided_dse_v1() {
      DriverConfigLoader loader =
          SessionUtils.configLoaderBuilder()
              .withString(DefaultDriverOption.PROTOCOL_VERSION, "DSE_V1")
              .build();
      try (CqlSession session = SessionUtils.newSession(ccm, loader)) {
        assertThat(session.getContext().getProtocolVersion()).isEqualTo(DseProtocolVersion.DSE_V1);
        session.execute("select * from system.local");
      }
    }
  
    @BackendRequirement(
        type = BackendType.DSE,
        minInclusive = "6.0",
        description = "Only DSE in [6.0,*[ has DSE_V2 supported")
    @Test
    public void should_use_explicitly_provided_dse_v2() {
      DriverConfigLoader loader =
          SessionUtils.configLoaderBuilder()
              .withString(DefaultDriverOption.PROTOCOL_VERSION, "DSE_V2")
              .build();
      try (CqlSession session = SessionUtils.newSession(ccm, loader)) {
        assertThat(session.getContext().getProtocolVersion()).isEqualTo(DseProtocolVersion.DSE_V2);
        session.execute("select * from system.local");
      }
    }
  }
  