public static final class RoutingRule.Builder extends com.google.protobuf.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| Modifier and Type | Method and Description |
|---|---|
RoutingRule.Builder |
addAllRoutingParameters(Iterable<? extends RoutingParameter> values)
A collection of Routing Parameter specifications.
|
RoutingRule.Builder |
addRepeatedField(com.google.protobuf.Descriptors.FieldDescriptor field,
Object value) |
RoutingRule.Builder |
addRoutingParameters(int index,
RoutingParameter.Builder builderForValue)
A collection of Routing Parameter specifications.
|
RoutingRule.Builder |
addRoutingParameters(int index,
RoutingParameter value)
A collection of Routing Parameter specifications.
|
RoutingRule.Builder |
addRoutingParameters(RoutingParameter.Builder builderForValue)
A collection of Routing Parameter specifications.
|
RoutingRule.Builder |
addRoutingParameters(RoutingParameter value)
A collection of Routing Parameter specifications.
|
RoutingParameter.Builder |
addRoutingParametersBuilder()
A collection of Routing Parameter specifications.
|
RoutingParameter.Builder |
addRoutingParametersBuilder(int index)
A collection of Routing Parameter specifications.
|
RoutingRule |
build() |
RoutingRule |
buildPartial() |
RoutingRule.Builder |
clear() |
RoutingRule.Builder |
clearField(com.google.protobuf.Descriptors.FieldDescriptor field) |
RoutingRule.Builder |
clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof) |
RoutingRule.Builder |
clearRoutingParameters()
A collection of Routing Parameter specifications.
|
RoutingRule.Builder |
clone() |
RoutingRule |
getDefaultInstanceForType() |
static com.google.protobuf.Descriptors.Descriptor |
getDescriptor() |
com.google.protobuf.Descriptors.Descriptor |
getDescriptorForType() |
RoutingParameter |
getRoutingParameters(int index)
A collection of Routing Parameter specifications.
|
RoutingParameter.Builder |
getRoutingParametersBuilder(int index)
A collection of Routing Parameter specifications.
|
List<RoutingParameter.Builder> |
getRoutingParametersBuilderList()
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.
|
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable |
internalGetFieldAccessorTable() |
boolean |
isInitialized() |
RoutingRule.Builder |
mergeFrom(com.google.protobuf.CodedInputStream input,
com.google.protobuf.ExtensionRegistryLite extensionRegistry) |
RoutingRule.Builder |
mergeFrom(com.google.protobuf.Message other) |
RoutingRule.Builder |
mergeFrom(RoutingRule other) |
RoutingRule.Builder |
mergeUnknownFields(com.google.protobuf.UnknownFieldSet unknownFields) |
RoutingRule.Builder |
removeRoutingParameters(int index)
A collection of Routing Parameter specifications.
|
RoutingRule.Builder |
setField(com.google.protobuf.Descriptors.FieldDescriptor field,
Object value) |
RoutingRule.Builder |
setRepeatedField(com.google.protobuf.Descriptors.FieldDescriptor field,
int index,
Object value) |
RoutingRule.Builder |
setRoutingParameters(int index,
RoutingParameter.Builder builderForValue)
A collection of Routing Parameter specifications.
|
RoutingRule.Builder |
setRoutingParameters(int index,
RoutingParameter value)
A collection of Routing Parameter specifications.
|
RoutingRule.Builder |
setUnknownFields(com.google.protobuf.UnknownFieldSet unknownFields) |
getAllFields, getField, getFieldBuilder, getOneofFieldDescriptor, getParentForChildren, getRepeatedField, getRepeatedFieldBuilder, getRepeatedFieldCount, getUnknownFields, hasField, hasOneof, internalGetMapField, internalGetMutableMapField, isClean, markClean, newBuilderForField, onBuilt, onChanged, setUnknownFieldsProto3findInitializationErrors, getInitializationErrorString, internalMergeFrom, mergeDelimitedFrom, mergeDelimitedFrom, mergeFrom, mergeFrom, mergeFrom, mergeFrom, mergeFrom, mergeFrom, mergeFrom, mergeFrom, mergeFrom, newUninitializedMessageException, toStringaddAll, addAll, mergeFrom, newUninitializedMessageExceptionequals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitpublic static final com.google.protobuf.Descriptors.Descriptor getDescriptor()
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable internalGetFieldAccessorTable()
internalGetFieldAccessorTable in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public RoutingRule.Builder clear()
clear in interface com.google.protobuf.Message.Builderclear in interface com.google.protobuf.MessageLite.Builderclear in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public com.google.protobuf.Descriptors.Descriptor getDescriptorForType()
getDescriptorForType in interface com.google.protobuf.Message.BuildergetDescriptorForType in interface com.google.protobuf.MessageOrBuildergetDescriptorForType in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public RoutingRule getDefaultInstanceForType()
getDefaultInstanceForType in interface com.google.protobuf.MessageLiteOrBuildergetDefaultInstanceForType in interface com.google.protobuf.MessageOrBuilderpublic RoutingRule build()
build in interface com.google.protobuf.Message.Builderbuild in interface com.google.protobuf.MessageLite.Builderpublic RoutingRule buildPartial()
buildPartial in interface com.google.protobuf.Message.BuilderbuildPartial in interface com.google.protobuf.MessageLite.Builderpublic RoutingRule.Builder clone()
clone in interface com.google.protobuf.Message.Builderclone in interface com.google.protobuf.MessageLite.Builderclone in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public RoutingRule.Builder setField(com.google.protobuf.Descriptors.FieldDescriptor field, Object value)
setField in interface com.google.protobuf.Message.BuildersetField in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public RoutingRule.Builder clearField(com.google.protobuf.Descriptors.FieldDescriptor field)
clearField in interface com.google.protobuf.Message.BuilderclearField in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public RoutingRule.Builder clearOneof(com.google.protobuf.Descriptors.OneofDescriptor oneof)
clearOneof in interface com.google.protobuf.Message.BuilderclearOneof in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public RoutingRule.Builder setRepeatedField(com.google.protobuf.Descriptors.FieldDescriptor field, int index, Object value)
setRepeatedField in interface com.google.protobuf.Message.BuildersetRepeatedField in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public RoutingRule.Builder addRepeatedField(com.google.protobuf.Descriptors.FieldDescriptor field, Object value)
addRepeatedField in interface com.google.protobuf.Message.BuilderaddRepeatedField in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public RoutingRule.Builder mergeFrom(com.google.protobuf.Message other)
mergeFrom in interface com.google.protobuf.Message.BuildermergeFrom in class com.google.protobuf.AbstractMessage.Builder<RoutingRule.Builder>public RoutingRule.Builder mergeFrom(RoutingRule other)
public final boolean isInitialized()
isInitialized in interface com.google.protobuf.MessageLiteOrBuilderisInitialized in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public RoutingRule.Builder mergeFrom(com.google.protobuf.CodedInputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws IOException
mergeFrom in interface com.google.protobuf.Message.BuildermergeFrom in interface com.google.protobuf.MessageLite.BuildermergeFrom in class com.google.protobuf.AbstractMessage.Builder<RoutingRule.Builder>IOExceptionpublic 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;getRoutingParametersList in interface RoutingRuleOrBuilderpublic 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;getRoutingParametersCount in interface RoutingRuleOrBuilderpublic 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;getRoutingParameters in interface RoutingRuleOrBuilderpublic 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;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;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;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;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;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;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;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;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;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;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;getRoutingParametersOrBuilder in interface RoutingRuleOrBuilderpublic 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;getRoutingParametersOrBuilderList in interface RoutingRuleOrBuilderpublic 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;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;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;public final RoutingRule.Builder setUnknownFields(com.google.protobuf.UnknownFieldSet unknownFields)
setUnknownFields in interface com.google.protobuf.Message.BuildersetUnknownFields in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>public final RoutingRule.Builder mergeUnknownFields(com.google.protobuf.UnknownFieldSet unknownFields)
mergeUnknownFields in interface com.google.protobuf.Message.BuildermergeUnknownFields in class com.google.protobuf.GeneratedMessageV3.Builder<RoutingRule.Builder>Copyright © 2022 Google LLC. All rights reserved.