Package io.envoyproxy.envoy.extensions.load_balancing_policies.client_side_weighted_round_robin.v3

Class ClientSideWeightedRoundRobin

java.lang.Object
com.google.protobuf.AbstractMessageLite
com.google.protobuf.AbstractMessage
com.google.protobuf.GeneratedMessageV3
io.envoyproxy.envoy.extensions.load_balancing_policies.client_side_weighted_round_robin.v3.ClientSideWeightedRoundRobin
All Implemented Interfaces:
com.google.protobuf.Message, com.google.protobuf.MessageLite, com.google.protobuf.MessageLiteOrBuilder, com.google.protobuf.MessageOrBuilder, ClientSideWeightedRoundRobinOrBuilder, Serializable
public final class ClientSideWeightedRoundRobin extends com.google.protobuf.GeneratedMessageV3 implements ClientSideWeightedRoundRobinOrBuilder
 Configuration for the client_side_weighted_round_robin LB policy.

 This policy differs from the built-in ROUND_ROBIN policy in terms of
 how the endpoint weights are determined. In the ROUND_ROBIN policy,
 the endpoint weights are sent by the control plane via EDS. However,
 in this policy, the endpoint weights are instead determined via qps (queries
 per second), eps (errors per second), and utilization metrics sent by the
 endpoint using the Open Request Cost Aggregation (ORCA) protocol. Utilization
 is determined by using the ORCA application_utilization field, if set, or
 else falling back to the cpu_utilization field. All queries count toward qps,
 regardless of result. Only failed queries count toward eps. A config
 parameter error_utilization_penalty controls the penalty to adjust endpoint
 weights using eps and qps. The weight of a given endpoint is computed as:
 ``qps / (utilization + eps/qps * error_utilization_penalty)``.

 Note that Envoy will forward the ORCA response headers/trailers from the upstream
 cluster to the downstream client. This means that if the downstream client is also
 configured to use ``client_side_weighted_round_robin`` it will load balance against
 Envoy based on upstream weights. This can happen when Envoy is used as a reverse proxy.
 To avoid this issue you can configure the :ref:`header_mutation filter  <envoy_v3_api_msg_extensions.filters.http.header_mutation.v3.HeaderMutation>` to remove
 the ORCA payload from the response headers/trailers.

 See the :ref:`load balancing architecture
 overview<arch_overview_load_balancing_types>` for more information.

 [#next-free-field: 9]
Protobuf type envoy.extensions.load_balancing_policies.client_side_weighted_round_robin.v3.ClientSideWeightedRoundRobin
See Also:

  • Field Details

    • ENABLE_OOB_LOAD_REPORT_FIELD_NUMBER

      public static final int ENABLE_OOB_LOAD_REPORT_FIELD_NUMBER
      See Also:

    • OOB_REPORTING_PERIOD_FIELD_NUMBER

      public static final int OOB_REPORTING_PERIOD_FIELD_NUMBER
      See Also:

    • BLACKOUT_PERIOD_FIELD_NUMBER

      public static final int BLACKOUT_PERIOD_FIELD_NUMBER
      See Also:

    • WEIGHT_EXPIRATION_PERIOD_FIELD_NUMBER

      public static final int WEIGHT_EXPIRATION_PERIOD_FIELD_NUMBER
      See Also:

    • WEIGHT_UPDATE_PERIOD_FIELD_NUMBER

      public static final int WEIGHT_UPDATE_PERIOD_FIELD_NUMBER
      See Also:

    • ERROR_UTILIZATION_PENALTY_FIELD_NUMBER

      public static final int ERROR_UTILIZATION_PENALTY_FIELD_NUMBER
      See Also:

    • METRIC_NAMES_FOR_COMPUTING_UTILIZATION_FIELD_NUMBER

      public static final int METRIC_NAMES_FOR_COMPUTING_UTILIZATION_FIELD_NUMBER
      See Also:

    • SLOW_START_CONFIG_FIELD_NUMBER

      public static final int SLOW_START_CONFIG_FIELD_NUMBER
      See Also:

  • Method Details

    • newInstance

      protected Object newInstance(com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter unused)
      Overrides:
      newInstance in class com.google.protobuf.GeneratedMessageV3

    • getDescriptor

      public static final com.google.protobuf.Descriptors.Descriptor getDescriptor()

    • internalGetFieldAccessorTable

      protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable internalGetFieldAccessorTable()
      Specified by:
      internalGetFieldAccessorTable in class com.google.protobuf.GeneratedMessageV3

    • hasEnableOobLoadReport

      public boolean hasEnableOobLoadReport()
       Whether to enable out-of-band utilization reporting collection from
 the endpoints. By default, per-request utilization reporting is used.
      .google.protobuf.BoolValue enable_oob_load_report = 1;
      Specified by:
      hasEnableOobLoadReport in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      Whether the enableOobLoadReport field is set.

    • getEnableOobLoadReport

      public com.google.protobuf.BoolValue getEnableOobLoadReport()
       Whether to enable out-of-band utilization reporting collection from
 the endpoints. By default, per-request utilization reporting is used.
      .google.protobuf.BoolValue enable_oob_load_report = 1;
      Specified by:
      getEnableOobLoadReport in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      The enableOobLoadReport.

    • getEnableOobLoadReportOrBuilder

      public com.google.protobuf.BoolValueOrBuilder getEnableOobLoadReportOrBuilder()
       Whether to enable out-of-band utilization reporting collection from
 the endpoints. By default, per-request utilization reporting is used.
      .google.protobuf.BoolValue enable_oob_load_report = 1;
      Specified by:
      getEnableOobLoadReportOrBuilder in interface ClientSideWeightedRoundRobinOrBuilder

    • hasOobReportingPeriod

      public boolean hasOobReportingPeriod()
       Load reporting interval to request from the server. Note that the
 server may not provide reports as frequently as the client requests.
 Used only when enable_oob_load_report is true. Default is 10 seconds.
      .google.protobuf.Duration oob_reporting_period = 2;
      Specified by:
      hasOobReportingPeriod in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      Whether the oobReportingPeriod field is set.

    • getOobReportingPeriod

      public com.google.protobuf.Duration getOobReportingPeriod()
       Load reporting interval to request from the server. Note that the
 server may not provide reports as frequently as the client requests.
 Used only when enable_oob_load_report is true. Default is 10 seconds.
      .google.protobuf.Duration oob_reporting_period = 2;
      Specified by:
      getOobReportingPeriod in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      The oobReportingPeriod.

    • getOobReportingPeriodOrBuilder

      public com.google.protobuf.DurationOrBuilder getOobReportingPeriodOrBuilder()
       Load reporting interval to request from the server. Note that the
 server may not provide reports as frequently as the client requests.
 Used only when enable_oob_load_report is true. Default is 10 seconds.
      .google.protobuf.Duration oob_reporting_period = 2;
      Specified by:
      getOobReportingPeriodOrBuilder in interface ClientSideWeightedRoundRobinOrBuilder

    • hasBlackoutPeriod

      public boolean hasBlackoutPeriod()
       A given endpoint must report load metrics continuously for at least
 this long before the endpoint weight will be used. This avoids
 churn when the set of endpoint addresses changes. Takes effect
 both immediately after we establish a connection to an endpoint and
 after weight_expiration_period has caused us to stop using the most
 recent load metrics. Default is 10 seconds.
      .google.protobuf.Duration blackout_period = 3;
      Specified by:
      hasBlackoutPeriod in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      Whether the blackoutPeriod field is set.

    • getBlackoutPeriod

      public com.google.protobuf.Duration getBlackoutPeriod()
       A given endpoint must report load metrics continuously for at least
 this long before the endpoint weight will be used. This avoids
 churn when the set of endpoint addresses changes. Takes effect
 both immediately after we establish a connection to an endpoint and
 after weight_expiration_period has caused us to stop using the most
 recent load metrics. Default is 10 seconds.
      .google.protobuf.Duration blackout_period = 3;
      Specified by:
      getBlackoutPeriod in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      The blackoutPeriod.

    • getBlackoutPeriodOrBuilder

      public com.google.protobuf.DurationOrBuilder getBlackoutPeriodOrBuilder()
       A given endpoint must report load metrics continuously for at least
 this long before the endpoint weight will be used. This avoids
 churn when the set of endpoint addresses changes. Takes effect
 both immediately after we establish a connection to an endpoint and
 after weight_expiration_period has caused us to stop using the most
 recent load metrics. Default is 10 seconds.
      .google.protobuf.Duration blackout_period = 3;
      Specified by:
      getBlackoutPeriodOrBuilder in interface ClientSideWeightedRoundRobinOrBuilder

    • hasWeightExpirationPeriod

      public boolean hasWeightExpirationPeriod()
       If a given endpoint has not reported load metrics in this long,
 then we stop using the reported weight. This ensures that we do
 not continue to use very stale weights. Once we stop using a stale
 value, if we later start seeing fresh reports again, the
 blackout_period applies. Defaults to 3 minutes.
      .google.protobuf.Duration weight_expiration_period = 4;
      Specified by:
      hasWeightExpirationPeriod in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      Whether the weightExpirationPeriod field is set.

    • getWeightExpirationPeriod

      public com.google.protobuf.Duration getWeightExpirationPeriod()
       If a given endpoint has not reported load metrics in this long,
 then we stop using the reported weight. This ensures that we do
 not continue to use very stale weights. Once we stop using a stale
 value, if we later start seeing fresh reports again, the
 blackout_period applies. Defaults to 3 minutes.
      .google.protobuf.Duration weight_expiration_period = 4;
      Specified by:
      getWeightExpirationPeriod in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      The weightExpirationPeriod.

    • getWeightExpirationPeriodOrBuilder

      public com.google.protobuf.DurationOrBuilder getWeightExpirationPeriodOrBuilder()
       If a given endpoint has not reported load metrics in this long,
 then we stop using the reported weight. This ensures that we do
 not continue to use very stale weights. Once we stop using a stale
 value, if we later start seeing fresh reports again, the
 blackout_period applies. Defaults to 3 minutes.
      .google.protobuf.Duration weight_expiration_period = 4;
      Specified by:
      getWeightExpirationPeriodOrBuilder in interface ClientSideWeightedRoundRobinOrBuilder

    • hasWeightUpdatePeriod

      public boolean hasWeightUpdatePeriod()
       How often endpoint weights are recalculated. Values less than 100ms are
 capped at 100ms. Default is 1 second.
      .google.protobuf.Duration weight_update_period = 5;
      Specified by:
      hasWeightUpdatePeriod in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      Whether the weightUpdatePeriod field is set.

    • getWeightUpdatePeriod

      public com.google.protobuf.Duration getWeightUpdatePeriod()
       How often endpoint weights are recalculated. Values less than 100ms are
 capped at 100ms. Default is 1 second.
      .google.protobuf.Duration weight_update_period = 5;
      Specified by:
      getWeightUpdatePeriod in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      The weightUpdatePeriod.

    • getWeightUpdatePeriodOrBuilder

      public com.google.protobuf.DurationOrBuilder getWeightUpdatePeriodOrBuilder()
       How often endpoint weights are recalculated. Values less than 100ms are
 capped at 100ms. Default is 1 second.
      .google.protobuf.Duration weight_update_period = 5;
      Specified by:
      getWeightUpdatePeriodOrBuilder in interface ClientSideWeightedRoundRobinOrBuilder

    • hasErrorUtilizationPenalty

      public boolean hasErrorUtilizationPenalty()
       The multiplier used to adjust endpoint weights with the error rate
 calculated as eps/qps. Configuration is rejected if this value is negative.
 Default is 1.0.
      .google.protobuf.FloatValue error_utilization_penalty = 6 [(.validate.rules) = { ... }
      Specified by:
      hasErrorUtilizationPenalty in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      Whether the errorUtilizationPenalty field is set.

    • getErrorUtilizationPenalty

      public com.google.protobuf.FloatValue getErrorUtilizationPenalty()
       The multiplier used to adjust endpoint weights with the error rate
 calculated as eps/qps. Configuration is rejected if this value is negative.
 Default is 1.0.
      .google.protobuf.FloatValue error_utilization_penalty = 6 [(.validate.rules) = { ... }
      Specified by:
      getErrorUtilizationPenalty in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      The errorUtilizationPenalty.

    • getErrorUtilizationPenaltyOrBuilder

      public com.google.protobuf.FloatValueOrBuilder getErrorUtilizationPenaltyOrBuilder()
       The multiplier used to adjust endpoint weights with the error rate
 calculated as eps/qps. Configuration is rejected if this value is negative.
 Default is 1.0.
      .google.protobuf.FloatValue error_utilization_penalty = 6 [(.validate.rules) = { ... }
      Specified by:
      getErrorUtilizationPenaltyOrBuilder in interface ClientSideWeightedRoundRobinOrBuilder

    • getMetricNamesForComputingUtilizationList

      public com.google.protobuf.ProtocolStringList getMetricNamesForComputingUtilizationList()
       By default, endpoint weight is computed based on the :ref:`application_utilization <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.application_utilization>` field reported by the endpoint.
 If that field is not set, then utilization will instead be computed by taking the max of the values of the metrics specified here.
 For map fields in the ORCA proto, the string will be of the form ``<map_field_name>.<map_key>``. For example, the string ``named_metrics.foo`` will mean to look for the key ``foo`` in the ORCA :ref:`named_metrics <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.named_metrics>` field.
 If none of the specified metrics are present in the load report, then :ref:`cpu_utilization <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.cpu_utilization>` is used instead.
      repeated string metric_names_for_computing_utilization = 7;
      Specified by:
      getMetricNamesForComputingUtilizationList in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      A list containing the metricNamesForComputingUtilization.

    • getMetricNamesForComputingUtilizationCount

      public int getMetricNamesForComputingUtilizationCount()
       By default, endpoint weight is computed based on the :ref:`application_utilization <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.application_utilization>` field reported by the endpoint.
 If that field is not set, then utilization will instead be computed by taking the max of the values of the metrics specified here.
 For map fields in the ORCA proto, the string will be of the form ``<map_field_name>.<map_key>``. For example, the string ``named_metrics.foo`` will mean to look for the key ``foo`` in the ORCA :ref:`named_metrics <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.named_metrics>` field.
 If none of the specified metrics are present in the load report, then :ref:`cpu_utilization <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.cpu_utilization>` is used instead.
      repeated string metric_names_for_computing_utilization = 7;
      Specified by:
      getMetricNamesForComputingUtilizationCount in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      The count of metricNamesForComputingUtilization.

    • getMetricNamesForComputingUtilization

      public String getMetricNamesForComputingUtilization(int index)
       By default, endpoint weight is computed based on the :ref:`application_utilization <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.application_utilization>` field reported by the endpoint.
 If that field is not set, then utilization will instead be computed by taking the max of the values of the metrics specified here.
 For map fields in the ORCA proto, the string will be of the form ``<map_field_name>.<map_key>``. For example, the string ``named_metrics.foo`` will mean to look for the key ``foo`` in the ORCA :ref:`named_metrics <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.named_metrics>` field.
 If none of the specified metrics are present in the load report, then :ref:`cpu_utilization <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.cpu_utilization>` is used instead.
      repeated string metric_names_for_computing_utilization = 7;
      Specified by:
      getMetricNamesForComputingUtilization in interface ClientSideWeightedRoundRobinOrBuilder
      Parameters:
      index - The index of the element to return.
      Returns:
      The metricNamesForComputingUtilization at the given index.

    • getMetricNamesForComputingUtilizationBytes

      public com.google.protobuf.ByteString getMetricNamesForComputingUtilizationBytes(int index)
       By default, endpoint weight is computed based on the :ref:`application_utilization <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.application_utilization>` field reported by the endpoint.
 If that field is not set, then utilization will instead be computed by taking the max of the values of the metrics specified here.
 For map fields in the ORCA proto, the string will be of the form ``<map_field_name>.<map_key>``. For example, the string ``named_metrics.foo`` will mean to look for the key ``foo`` in the ORCA :ref:`named_metrics <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.named_metrics>` field.
 If none of the specified metrics are present in the load report, then :ref:`cpu_utilization <envoy_v3_api_field_.xds.data.orca.v3.OrcaLoadReport.cpu_utilization>` is used instead.
      repeated string metric_names_for_computing_utilization = 7;
      Specified by:
      getMetricNamesForComputingUtilizationBytes in interface ClientSideWeightedRoundRobinOrBuilder
      Parameters:
      index - The index of the value to return.
      Returns:
      The bytes of the metricNamesForComputingUtilization at the given index.

    • hasSlowStartConfig

      public boolean hasSlowStartConfig()
       Configuration for slow start mode.
 If this configuration is not set, slow start will not be not enabled.
      .envoy.extensions.load_balancing_policies.common.v3.SlowStartConfig slow_start_config = 8;
      Specified by:
      hasSlowStartConfig in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      Whether the slowStartConfig field is set.

    • getSlowStartConfig

      public SlowStartConfig getSlowStartConfig()
       Configuration for slow start mode.
 If this configuration is not set, slow start will not be not enabled.
      .envoy.extensions.load_balancing_policies.common.v3.SlowStartConfig slow_start_config = 8;
      Specified by:
      getSlowStartConfig in interface ClientSideWeightedRoundRobinOrBuilder
      Returns:
      The slowStartConfig.

    • getSlowStartConfigOrBuilder

      public SlowStartConfigOrBuilder getSlowStartConfigOrBuilder()
       Configuration for slow start mode.
 If this configuration is not set, slow start will not be not enabled.
      .envoy.extensions.load_balancing_policies.common.v3.SlowStartConfig slow_start_config = 8;
      Specified by:
      getSlowStartConfigOrBuilder in interface ClientSideWeightedRoundRobinOrBuilder

    • isInitialized

      public final boolean isInitialized()
      Specified by:
      isInitialized in interface com.google.protobuf.MessageLiteOrBuilder
      Overrides:
      isInitialized in class com.google.protobuf.GeneratedMessageV3

    • writeTo

      public void writeTo(com.google.protobuf.CodedOutputStream output) throws IOException
      Specified by:
      writeTo in interface com.google.protobuf.MessageLite
      Overrides:
      writeTo in class com.google.protobuf.GeneratedMessageV3
      Throws:
      IOException

    • getSerializedSize

      public int getSerializedSize()
      Specified by:
      getSerializedSize in interface com.google.protobuf.MessageLite
      Overrides:
      getSerializedSize in class com.google.protobuf.GeneratedMessageV3

    • equals

      public boolean equals(Object obj)
      Specified by:
      equals in interface com.google.protobuf.Message
      Overrides:
      equals in class com.google.protobuf.AbstractMessage

    • hashCode

      public int hashCode()
      Specified by:
      hashCode in interface com.google.protobuf.Message
      Overrides:
      hashCode in class com.google.protobuf.AbstractMessage

    • parseFrom

      public static ClientSideWeightedRoundRobin parseFrom(ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException
      Throws:
      com.google.protobuf.InvalidProtocolBufferException

    • parseFrom

      public static ClientSideWeightedRoundRobin parseFrom(ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws com.google.protobuf.InvalidProtocolBufferException
      Throws:
      com.google.protobuf.InvalidProtocolBufferException

    • parseFrom

      public static ClientSideWeightedRoundRobin parseFrom(com.google.protobuf.ByteString data) throws com.google.protobuf.InvalidProtocolBufferException
      Throws:
      com.google.protobuf.InvalidProtocolBufferException

    • parseFrom

      public static ClientSideWeightedRoundRobin parseFrom(com.google.protobuf.ByteString data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws com.google.protobuf.InvalidProtocolBufferException
      Throws:
      com.google.protobuf.InvalidProtocolBufferException

    • parseFrom

      public static ClientSideWeightedRoundRobin parseFrom(byte[] data) throws com.google.protobuf.InvalidProtocolBufferException
      Throws:
      com.google.protobuf.InvalidProtocolBufferException

    • parseFrom

      public static ClientSideWeightedRoundRobin parseFrom(byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws com.google.protobuf.InvalidProtocolBufferException
      Throws:
      com.google.protobuf.InvalidProtocolBufferException

    • parseFrom

      public static ClientSideWeightedRoundRobin parseFrom(InputStream input) throws IOException
      Throws:
      IOException

    • parseFrom

      public static ClientSideWeightedRoundRobin parseFrom(InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws IOException
      Throws:
      IOException

    • parseDelimitedFrom

      public static ClientSideWeightedRoundRobin parseDelimitedFrom(InputStream input) throws IOException
      Throws:
      IOException

    • parseDelimitedFrom

      public static ClientSideWeightedRoundRobin parseDelimitedFrom(InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws IOException
      Throws:
      IOException

    • parseFrom

      public static ClientSideWeightedRoundRobin parseFrom(com.google.protobuf.CodedInputStream input) throws IOException
      Throws:
      IOException

    • parseFrom

      public static ClientSideWeightedRoundRobin parseFrom(com.google.protobuf.CodedInputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws IOException
      Throws:
      IOException

    • newBuilderForType

      public ClientSideWeightedRoundRobin.Builder newBuilderForType()
      Specified by:
      newBuilderForType in interface com.google.protobuf.Message
      Specified by:
      newBuilderForType in interface com.google.protobuf.MessageLite

    • newBuilder

      public static ClientSideWeightedRoundRobin.Builder newBuilder()

    • newBuilder

      public static ClientSideWeightedRoundRobin.Builder newBuilder(ClientSideWeightedRoundRobin prototype)

    • toBuilder

      public ClientSideWeightedRoundRobin.Builder toBuilder()
      Specified by:
      toBuilder in interface com.google.protobuf.Message
      Specified by:
      toBuilder in interface com.google.protobuf.MessageLite

    • newBuilderForType

      protected ClientSideWeightedRoundRobin.Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent)
      Specified by:
      newBuilderForType in class com.google.protobuf.GeneratedMessageV3

    • getDefaultInstance

      public static ClientSideWeightedRoundRobin getDefaultInstance()

    • parser

      public static com.google.protobuf.Parser<ClientSideWeightedRoundRobin> parser()

    • getParserForType

      public com.google.protobuf.Parser<ClientSideWeightedRoundRobin> getParserForType()
      Specified by:
      getParserForType in interface com.google.protobuf.Message
      Specified by:
      getParserForType in interface com.google.protobuf.MessageLite
      Overrides:
      getParserForType in class com.google.protobuf.GeneratedMessageV3

    • getDefaultInstanceForType

      public ClientSideWeightedRoundRobin getDefaultInstanceForType()
      Specified by:
      getDefaultInstanceForType in interface com.google.protobuf.MessageLiteOrBuilder
      Specified by:
      getDefaultInstanceForType in interface com.google.protobuf.MessageOrBuilder