Class RoutingRule.Builder

public static final class RoutingRule.Builder extends GeneratedMessageV3.Builder<RoutingRule.Builder> 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

Methods

addAllRoutingParameters(Iterable<? extends RoutingParameter> values)

public RoutingRule.Builder addAllRoutingParameters(Iterable<? extends RoutingParameter> values)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameter
NameDescription
valuesIterable<? extends com.google.api.RoutingParameter>
Returns
TypeDescription
RoutingRule.Builder

addRepeatedField(Descriptors.FieldDescriptor field, Object value)

public RoutingRule.Builder addRepeatedField(Descriptors.FieldDescriptor field, Object value)
Parameters
NameDescription
fieldFieldDescriptor
valueObject
Returns
TypeDescription
RoutingRule.Builder
Overrides

addRoutingParameters(RoutingParameter value)

public RoutingRule.Builder addRoutingParameters(RoutingParameter value)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameter
NameDescription
valueRoutingParameter
Returns
TypeDescription
RoutingRule.Builder

addRoutingParameters(RoutingParameter.Builder builderForValue)

public RoutingRule.Builder addRoutingParameters(RoutingParameter.Builder builderForValue)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameter
NameDescription
builderForValueRoutingParameter.Builder
Returns
TypeDescription
RoutingRule.Builder

addRoutingParameters(int index, RoutingParameter value)

public RoutingRule.Builder addRoutingParameters(int index, RoutingParameter value)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameters
NameDescription
indexint
valueRoutingParameter
Returns
TypeDescription
RoutingRule.Builder

addRoutingParameters(int index, RoutingParameter.Builder builderForValue)

public RoutingRule.Builder addRoutingParameters(int index, RoutingParameter.Builder builderForValue)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameters
NameDescription
indexint
builderForValueRoutingParameter.Builder
Returns
TypeDescription
RoutingRule.Builder

addRoutingParametersBuilder()

public RoutingParameter.Builder addRoutingParametersBuilder()

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Returns
TypeDescription
RoutingParameter.Builder

addRoutingParametersBuilder(int index)

public RoutingParameter.Builder addRoutingParametersBuilder(int index)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameter
NameDescription
indexint
Returns
TypeDescription
RoutingParameter.Builder

build()

public RoutingRule build()
Returns
TypeDescription
RoutingRule

buildPartial()

public RoutingRule buildPartial()
Returns
TypeDescription
RoutingRule

clear()

public RoutingRule.Builder clear()
Returns
TypeDescription
RoutingRule.Builder
Overrides

clearField(Descriptors.FieldDescriptor field)

public RoutingRule.Builder clearField(Descriptors.FieldDescriptor field)
Parameter
NameDescription
fieldFieldDescriptor
Returns
TypeDescription
RoutingRule.Builder
Overrides

clearOneof(Descriptors.OneofDescriptor oneof)

public RoutingRule.Builder clearOneof(Descriptors.OneofDescriptor oneof)
Parameter
NameDescription
oneofOneofDescriptor
Returns
TypeDescription
RoutingRule.Builder
Overrides

clearRoutingParameters()

public RoutingRule.Builder clearRoutingParameters()

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Returns
TypeDescription
RoutingRule.Builder

clone()

public RoutingRule.Builder clone()
Returns
TypeDescription
RoutingRule.Builder
Overrides

getDefaultInstanceForType()

public RoutingRule getDefaultInstanceForType()
Returns
TypeDescription
RoutingRule

getDescriptor()

public static final Descriptors.Descriptor getDescriptor()
Returns
TypeDescription
Descriptor

getDescriptorForType()

public Descriptors.Descriptor getDescriptorForType()
Returns
TypeDescription
Descriptor
Overrides

getRoutingParameters(int index)

public RoutingParameter getRoutingParameters(int index)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameter
NameDescription
indexint
Returns
TypeDescription
RoutingParameter

getRoutingParametersBuilder(int index)

public RoutingParameter.Builder getRoutingParametersBuilder(int index)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameter
NameDescription
indexint
Returns
TypeDescription
RoutingParameter.Builder

getRoutingParametersBuilderList()

public List<RoutingParameter.Builder> getRoutingParametersBuilderList()

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Returns
TypeDescription
List<Builder>

getRoutingParametersCount()

public int getRoutingParametersCount()

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Returns
TypeDescription
int

getRoutingParametersList()

public List<RoutingParameter> getRoutingParametersList()

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Returns
TypeDescription
List<RoutingParameter>

getRoutingParametersOrBuilder(int index)

public RoutingParameterOrBuilder getRoutingParametersOrBuilder(int index)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameter
NameDescription
indexint
Returns
TypeDescription
RoutingParameterOrBuilder

getRoutingParametersOrBuilderList()

public List<? extends RoutingParameterOrBuilder> getRoutingParametersOrBuilderList()

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Returns
TypeDescription
List<? extends com.google.api.RoutingParameterOrBuilder>

internalGetFieldAccessorTable()

protected GeneratedMessageV3.FieldAccessorTable internalGetFieldAccessorTable()
Returns
TypeDescription
FieldAccessorTable
Overrides

isInitialized()

public final boolean isInitialized()
Returns
TypeDescription
boolean
Overrides

mergeFrom(RoutingRule other)

public RoutingRule.Builder mergeFrom(RoutingRule other)
Parameter
NameDescription
otherRoutingRule
Returns
TypeDescription
RoutingRule.Builder

mergeFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)

public RoutingRule.Builder mergeFrom(CodedInputStream input, ExtensionRegistryLite extensionRegistry)
Parameters
NameDescription
inputCodedInputStream
extensionRegistryExtensionRegistryLite
Returns
TypeDescription
RoutingRule.Builder
Overrides Exceptions
TypeDescription
IOException

mergeFrom(Message other)

public RoutingRule.Builder mergeFrom(Message other)
Parameter
NameDescription
otherMessage
Returns
TypeDescription
RoutingRule.Builder
Overrides

mergeUnknownFields(UnknownFieldSet unknownFields)

public final RoutingRule.Builder mergeUnknownFields(UnknownFieldSet unknownFields)
Parameter
NameDescription
unknownFieldsUnknownFieldSet
Returns
TypeDescription
RoutingRule.Builder
Overrides

removeRoutingParameters(int index)

public RoutingRule.Builder removeRoutingParameters(int index)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameter
NameDescription
indexint
Returns
TypeDescription
RoutingRule.Builder

setField(Descriptors.FieldDescriptor field, Object value)

public RoutingRule.Builder setField(Descriptors.FieldDescriptor field, Object value)
Parameters
NameDescription
fieldFieldDescriptor
valueObject
Returns
TypeDescription
RoutingRule.Builder
Overrides

setRepeatedField(Descriptors.FieldDescriptor field, int index, Object value)

public RoutingRule.Builder setRepeatedField(Descriptors.FieldDescriptor field, int index, Object value)
Parameters
NameDescription
fieldFieldDescriptor
indexint
valueObject
Returns
TypeDescription
RoutingRule.Builder
Overrides

setRoutingParameters(int index, RoutingParameter value)

public RoutingRule.Builder setRoutingParameters(int index, RoutingParameter value)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameters
NameDescription
indexint
valueRoutingParameter
Returns
TypeDescription
RoutingRule.Builder

setRoutingParameters(int index, RoutingParameter.Builder builderForValue)

public RoutingRule.Builder setRoutingParameters(int index, RoutingParameter.Builder builderForValue)

A collection of Routing Parameter specifications. NOTE: If multiple Routing Parameters describe the same key (via the path_template field or via the field field when path_template is not provided), "last one wins" rule determines which Parameter gets used. See the examples for more details.

repeated .google.api.RoutingParameter routing_parameters = 2;

Parameters
NameDescription
indexint
builderForValueRoutingParameter.Builder
Returns
TypeDescription
RoutingRule.Builder

setUnknownFields(UnknownFieldSet unknownFields)

public final RoutingRule.Builder setUnknownFields(UnknownFieldSet unknownFields)
Parameter
NameDescription
unknownFieldsUnknownFieldSet
Returns
TypeDescription
RoutingRule.Builder
Overrides