java.lang.Object
- com.google.protobuf.AbstractMessageLite
- - com.google.protobuf.AbstractMessage
  - - com.google.protobuf.GeneratedMessageV3
    - - com.google.api.RoutingRule

All Implemented Interfaces:: RoutingRuleOrBuilder, com.google.protobuf.Message, com.google.protobuf.MessageLite, com.google.protobuf.MessageLiteOrBuilder, com.google.protobuf.MessageOrBuilder, Serializable

public final class RoutingRule
extends com.google.protobuf.GeneratedMessageV3
implements RoutingRuleOrBuilder

 Specifies the routing information that should be sent along with the request
 in the form of routing header.
 **NOTE:** All service configuration rules follow the "last one wins" order.
 The examples below will apply to an RPC which has the following request type:
 Message Definition:
     message Request {
       // The name of the Table
       // Values can be of the following formats:
       // - `projects/<project>/tables/<table>`
       // - `projects/<project>/instances/<instance>/tables/<table>`
       // - `region/<region>/zones/<zone>/tables/<table>`
       string table_name = 1;
       // This value specifies routing for replication.
       // It can be in the following formats:
       // - `profiles/<profile_id>`
       // - a legacy `profile_id` that can be any string
       string app_profile_id = 2;
     }
 Example message:
     {
       table_name: projects/proj_foo/instances/instance_bar/table/table_baz,
       app_profile_id: profiles/prof_qux
     }
 The routing header consists of one or multiple key-value pairs. Every key
 and value must be percent-encoded, and joined together in the format of
 `key1=value1&key2=value2`.
 In the examples below I am skipping the percent-encoding for readablity.
 Example 1
 Extracting a field from the request to put into the routing header
 unchanged, with the key equal to the field name.
 annotation:
     option (google.api.routing) = {
       // Take the `app_profile_id`.
       routing_parameters {
         field: "app_profile_id"
       }
     };
 result:
     x-goog-request-params: app_profile_id=profiles/prof_qux
 Example 2
 Extracting a field from the request to put into the routing header
 unchanged, with the key different from the field name.
 annotation:
     option (google.api.routing) = {
       // Take the `app_profile_id`, but name it `routing_id` in the header.
       routing_parameters {
         field: "app_profile_id"
         path_template: "{routing_id=**}"
       }
     };
 result:
     x-goog-request-params: routing_id=profiles/prof_qux
 Example 3
 Extracting a field from the request to put into the routing
 header, while matching a path template syntax on the field's value.
 NB: it is more useful to send nothing than to send garbage for the purpose
 of dynamic routing, since garbage pollutes cache. Thus the matching.
 Sub-example 3a
 The field matches the template.
 annotation:
     option (google.api.routing) = {
       // Take the `table_name`, if it's well-formed (with project-based
       // syntax).
       routing_parameters {
         field: "table_name"
         path_template: "{table_name=projects/*/instances/*/**}"
       }
     };
 result:
     x-goog-request-params:
     table_name=projects/proj_foo/instances/instance_bar/table/table_baz
 Sub-example 3b
 The field does not match the template.
 annotation:
     option (google.api.routing) = {
       // Take the `table_name`, if it's well-formed (with region-based
       // syntax).
       routing_parameters {
         field: "table_name"
         path_template: "{table_name=regions/*/zones/*/**}"
       }
     };
 result:
     <no routing header will be sent>
 Sub-example 3c
 Multiple alternative conflictingly named path templates are
 specified. The one that matches is used to construct the header.
 annotation:
     option (google.api.routing) = {
       // Take the `table_name`, if it's well-formed, whether
       // using the region- or projects-based syntax.
       routing_parameters {
         field: "table_name"
         path_template: "{table_name=regions/*/zones/*/**}"
       }
       routing_parameters {
         field: "table_name"
         path_template: "{table_name=projects/*/instances/*/**}"
       }
     };
 result:
     x-goog-request-params:
     table_name=projects/proj_foo/instances/instance_bar/table/table_baz
 Example 4
 Extracting a single routing header key-value pair by matching a
 template syntax on (a part of) a single request field.
 annotation:
     option (google.api.routing) = {
       // Take just the project id from the `table_name` field.
       routing_parameters {
         field: "table_name"
         path_template: "{routing_id=projects/*}/**"
       }
     };
 result:
     x-goog-request-params: routing_id=projects/proj_foo
 Example 5
 Extracting a single routing header key-value pair by matching
 several conflictingly named path templates on (parts of) a single request
 field. The last template to match "wins" the conflict.
 annotation:
     option (google.api.routing) = {
       // If the `table_name` does not have instances information,
       // take just the project id for routing.
       // Otherwise take project + instance.
       routing_parameters {
         field: "table_name"
         path_template: "{routing_id=projects/*}/**"
       }
       routing_parameters {
         field: "table_name"
         path_template: "{routing_id=projects/*/instances/*}/**"
       }
     };
 result:
     x-goog-request-params:
     routing_id=projects/proj_foo/instances/instance_bar
 Example 6
 Extracting multiple routing header key-value pairs by matching
 several non-conflicting path templates on (parts of) a single request field.
 Sub-example 6a
 Make the templates strict, so that if the `table_name` does not
 have an instance information, nothing is sent.
 annotation:
     option (google.api.routing) = {
       // The routing code needs two keys instead of one composite
       // but works only for the tables with the "project-instance" name
       // syntax.
       routing_parameters {
         field: "table_name"
         path_template: "{project_id=projects/*}/instances/*/**"
       }
       routing_parameters {
         field: "table_name"
         path_template: "projects/*/{instance_id=instances/*}/**"
       }
     };
 result:
     x-goog-request-params:
     project_id=projects/proj_foo&instance_id=instances/instance_bar
 Sub-example 6b
 Make the templates loose, so that if the `table_name` does not
 have an instance information, just the project id part is sent.
 annotation:
     option (google.api.routing) = {
       // The routing code wants two keys instead of one composite
       // but will work with just the `project_id` for tables without
       // an instance in the `table_name`.
       routing_parameters {
         field: "table_name"
         path_template: "{project_id=projects/*}/**"
       }
       routing_parameters {
         field: "table_name"
         path_template: "projects/*/{instance_id=instances/*}/**"
       }
     };
 result (is the same as 6a for our example message because it has the instance
 information):
     x-goog-request-params:
     project_id=projects/proj_foo&instance_id=instances/instance_bar
 Example 7
 Extracting multiple routing header key-value pairs by matching
 several path templates on multiple request fields.
 NB: note that here there is no way to specify sending nothing if one of the
 fields does not match its template. E.g. if the `table_name` is in the wrong
 format, the `project_id` will not be sent, but the `routing_id` will be.
 The backend routing code has to be aware of that and be prepared to not
 receive a full complement of keys if it expects multiple.
 annotation:
     option (google.api.routing) = {
       // The routing needs both `project_id` and `routing_id`
       // (from the `app_profile_id` field) for routing.
       routing_parameters {
         field: "table_name"
         path_template: "{project_id=projects/*}/**"
       }
       routing_parameters {
         field: "app_profile_id"
         path_template: "{routing_id=**}"
       }
     };
 result:
     x-goog-request-params:
     project_id=projects/proj_foo&routing_id=profiles/prof_qux
 Example 8
 Extracting a single routing header key-value pair by matching
 several conflictingly named path templates on several request fields. The
 last template to match "wins" the conflict.
 annotation:
     option (google.api.routing) = {
       // The `routing_id` can be a project id or a region id depending on
       // the table name format, but only if the `app_profile_id` is not set.
       // If `app_profile_id` is set it should be used instead.
       routing_parameters {
         field: "table_name"
         path_template: "{routing_id=projects/*}/**"
       }
       routing_parameters {
          field: "table_name"
          path_template: "{routing_id=regions/*}/**"
       }
       routing_parameters {
         field: "app_profile_id"
         path_template: "{routing_id=**}"
       }
     };
 result:
     x-goog-request-params: routing_id=profiles/prof_qux
 Example 9
 Bringing it all together.
 annotation:
     option (google.api.routing) = {
       // For routing both `table_location` and a `routing_id` are needed.
       //
       // table_location can be either an instance id or a region+zone id.
       //
       // For `routing_id`, take the value of `app_profile_id`
       // - If it's in the format `profiles/<profile_id>`, send
       // just the `<profile_id>` part.
       // - If it's any other literal, send it as is.
       // If the `app_profile_id` is empty, and the `table_name` starts with
       // the project_id, send that instead.
       routing_parameters {
         field: "table_name"
         path_template: "projects/*/{table_location=instances/*}/tables/*"
       }
       routing_parameters {
         field: "table_name"
         path_template: "{table_location=regions/*/zones/*}/tables/*"
       }
       routing_parameters {
         field: "table_name"
         path_template: "{routing_id=projects/*}/**"
       }
       routing_parameters {
         field: "app_profile_id"
         path_template: "{routing_id=**}"
       }
       routing_parameters {
         field: "app_profile_id"
         path_template: "profiles/{routing_id=*}"
       }
     };
 result:
     x-goog-request-params:
     table_location=instances/instance_bar&routing_id=prof_qux

Protobuf type google.api.RoutingRule

See Also:: Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`RoutingRule.Builder`	Specifies the routing information that should be sent along with the request in the form of routing header.

Nested classes/interfaces inherited from class com.google.protobuf.GeneratedMessageV3
com.google.protobuf.GeneratedMessageV3.BuilderParent, com.google.protobuf.GeneratedMessageV3.ExtendableBuilder<MessageType extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage,BuilderType extends com.google.protobuf.GeneratedMessageV3.ExtendableBuilder<MessageType,BuilderType>>, com.google.protobuf.GeneratedMessageV3.ExtendableMessage<MessageType extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage>, com.google.protobuf.GeneratedMessageV3.ExtendableMessageOrBuilder<MessageType extends com.google.protobuf.GeneratedMessageV3.ExtendableMessage>, com.google.protobuf.GeneratedMessageV3.FieldAccessorTable, com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter

Nested classes/interfaces inherited from class com.google.protobuf.AbstractMessageLite
com.google.protobuf.AbstractMessageLite.InternalOneOfEnum

Field Summary

Fields
Modifier and Type Field Description

static int ROUTING_PARAMETERS_FIELD_NUMBER
- Fields inherited from class com.google.protobuf.GeneratedMessageV3
  alwaysUseFieldBuilders, unknownFields
- Fields inherited from class com.google.protobuf.AbstractMessage
  memoizedSize
- Fields inherited from class com.google.protobuf.AbstractMessageLite
  memoizedHashCode

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object obj)`
`static RoutingRule`	`getDefaultInstance()`
`RoutingRule`	`getDefaultInstanceForType()`
`static com.google.protobuf.Descriptors.Descriptor`	`getDescriptor()`
`com.google.protobuf.Parser<RoutingRule>`	`getParserForType()`
`RoutingParameter`	`getRoutingParameters(int index)`	A collection of Routing Parameter specifications.
`int`	`getRoutingParametersCount()`	A collection of Routing Parameter specifications.
`List<RoutingParameter>`	`getRoutingParametersList()`	A collection of Routing Parameter specifications.
`RoutingParameterOrBuilder`	`getRoutingParametersOrBuilder(int index)`	A collection of Routing Parameter specifications.
`List<? extends RoutingParameterOrBuilder>`	`getRoutingParametersOrBuilderList()`	A collection of Routing Parameter specifications.
`int`	`getSerializedSize()`
`com.google.protobuf.UnknownFieldSet`	`getUnknownFields()`
`int`	`hashCode()`
`protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable`	`internalGetFieldAccessorTable()`
`boolean`	`isInitialized()`
`static RoutingRule.Builder`	`newBuilder()`
`static RoutingRule.Builder`	`newBuilder(RoutingRule prototype)`
`RoutingRule.Builder`	`newBuilderForType()`
`protected RoutingRule.Builder`	`newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent)`
`protected Object`	`newInstance(com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter unused)`
`static RoutingRule`	`parseDelimitedFrom(InputStream input)`
`static RoutingRule`	`parseDelimitedFrom(InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static RoutingRule`	`parseFrom(byte[] data)`
`static RoutingRule`	`parseFrom(byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static RoutingRule`	`parseFrom(com.google.protobuf.ByteString data)`
`static RoutingRule`	`parseFrom(com.google.protobuf.ByteString data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static RoutingRule`	`parseFrom(com.google.protobuf.CodedInputStream input)`
`static RoutingRule`	`parseFrom(com.google.protobuf.CodedInputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static RoutingRule`	`parseFrom(InputStream input)`
`static RoutingRule`	`parseFrom(InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static RoutingRule`	`parseFrom(ByteBuffer data)`
`static RoutingRule`	`parseFrom(ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry)`
`static com.google.protobuf.Parser<RoutingRule>`	`parser()`
`RoutingRule.Builder`	`toBuilder()`
`void`	`writeTo(com.google.protobuf.CodedOutputStream output)`

Methods inherited from class com.google.protobuf.GeneratedMessageV3
canUseUnsafe, computeStringSize, computeStringSizeNoTag, emptyBooleanList, emptyDoubleList, emptyFloatList, emptyIntList, emptyLongList, getAllFields, getDescriptorForType, getField, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, hasField, hasOneof, internalGetMapField, isStringEmpty, makeExtensionsImmutable, mergeFromAndMakeImmutableInternal, mutableCopy, mutableCopy, mutableCopy, mutableCopy, mutableCopy, newBooleanList, newBuilderForType, newDoubleList, newFloatList, newIntList, newLongList, parseDelimitedWithIOException, parseDelimitedWithIOException, parseUnknownField, parseUnknownFieldProto3, parseWithIOException, parseWithIOException, parseWithIOException, parseWithIOException, serializeBooleanMapTo, serializeIntegerMapTo, serializeLongMapTo, serializeStringMapTo, writeReplace, writeString, writeStringNoTag

Methods inherited from class com.google.protobuf.AbstractMessage
findInitializationErrors, getInitializationErrorString, hashBoolean, hashEnum, hashEnumList, hashFields, hashLong, toString

Methods inherited from class com.google.protobuf.AbstractMessageLite
addAll, addAll, checkByteStringIsUtf8, toByteArray, toByteString, writeDelimitedTo, writeTo

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.google.protobuf.MessageLite
toByteArray, toByteString, writeDelimitedTo, writeTo

Methods inherited from interface com.google.protobuf.MessageOrBuilder
findInitializationErrors, getAllFields, getDescriptorForType, getField, getInitializationErrorString, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, hasField, hasOneof

Field Detail
- ROUTING_PARAMETERS_FIELD_NUMBER
```
public static final int ROUTING_PARAMETERS_FIELD_NUMBER
```
  See Also:
  
  Constant Field Values

Method Detail

newInstance

protected Object newInstance(com.google.protobuf.GeneratedMessageV3.UnusedPrivateParameter unused)

Overrides:: newInstance in class com.google.protobuf.GeneratedMessageV3

getUnknownFields
```
public final com.google.protobuf.UnknownFieldSet getUnknownFields()
```
Specified by:

getUnknownFields in interface com.google.protobuf.MessageOrBuilder

Overrides:

getUnknownFields 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