public final class HttpRule extends com.google.protobuf.GeneratedMessageV3 implements HttpRuleOrBuilder
`HttpRule` defines the mapping of an RPC method to one or more HTTP
REST API methods. The mapping specifies how different portions of the RPC
request message are mapped to URL path, URL query parameters, and
HTTP request body. The mapping is typically specified as an
`google.api.http` annotation on the RPC method,
see "google/api/annotations.proto" for details.
The mapping consists of a field specifying the path template and
method kind. The path template can refer to fields in the request
message, as in the example below which describes a REST GET
operation on a resource collection of messages:
service Messaging {
rpc GetMessage(GetMessageRequest) returns (Message) {
option (google.api.http).get = "/v1/messages/{message_id}/{sub.subfield}";
}
}
message GetMessageRequest {
message SubMessage {
string subfield = 1;
}
string message_id = 1; // mapped to the URL
SubMessage sub = 2; // `sub.subfield` is url-mapped
}
message Message {
string text = 1; // content of the resource
}
The same http annotation can alternatively be expressed inside the
`GRPC API Configuration` YAML file.
http:
rules:
- selector: <proto_package_name>.Messaging.GetMessage
get: /v1/messages/{message_id}/{sub.subfield}
This definition enables an automatic, bidrectional mapping of HTTP
JSON to RPC. Example:
HTTP | RPC
-----|-----
`GET /v1/messages/123456/foo` | `GetMessage(message_id: "123456" sub: SubMessage(subfield: "foo"))`
In general, not only fields but also field paths can be referenced
from a path pattern. Fields mapped to the path pattern cannot be
repeated and must have a primitive (non-message) type.
Any fields in the request message which are not bound by the path
pattern automatically become (optional) HTTP query
parameters. Assume the following definition of the request message:
service Messaging {
rpc GetMessage(GetMessageRequest) returns (Message) {
option (google.api.http).get = "/v1/messages/{message_id}";
}
}
message GetMessageRequest {
message SubMessage {
string subfield = 1;
}
string message_id = 1; // mapped to the URL
int64 revision = 2; // becomes a parameter
SubMessage sub = 3; // `sub.subfield` becomes a parameter
}
This enables a HTTP JSON to RPC mapping as below:
HTTP | RPC
-----|-----
`GET /v1/messages/123456?revision=2&sub.subfield=foo` | `GetMessage(message_id: "123456" revision: 2 sub: SubMessage(subfield: "foo"))`
Note that fields which are mapped to HTTP parameters must have a
primitive type or a repeated primitive type. Message types are not
allowed. In the case of a repeated type, the parameter can be
repeated in the URL, as in `...?param=A¶m=B`.
For HTTP method kinds which allow a request body, the `body` field
specifies the mapping. Consider a REST update method on the
message resource collection:
service Messaging {
rpc UpdateMessage(UpdateMessageRequest) returns (Message) {
option (google.api.http) = {
put: "/v1/messages/{message_id}"
body: "message"
};
}
}
message UpdateMessageRequest {
string message_id = 1; // mapped to the URL
Message message = 2; // mapped to the body
}
The following HTTP JSON to RPC mapping is enabled, where the
representation of the JSON in the request body is determined by
protos JSON encoding:
HTTP | RPC
-----|-----
`PUT /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id: "123456" message { text: "Hi!" })`
The special name `*` can be used in the body mapping to define that
every field not bound by the path template should be mapped to the
request body. This enables the following alternative definition of
the update method:
service Messaging {
rpc UpdateMessage(Message) returns (Message) {
option (google.api.http) = {
put: "/v1/messages/{message_id}"
body: "*"
};
}
}
message Message {
string message_id = 1;
string text = 2;
}
The following HTTP JSON to RPC mapping is enabled:
HTTP | RPC
-----|-----
`PUT /v1/messages/123456 { "text": "Hi!" }` | `UpdateMessage(message_id: "123456" text: "Hi!")`
Note that when using `*` in the body mapping, it is not possible to
have HTTP parameters, as all fields not bound by the path end in
the body. This makes this option more rarely used in practice of
defining REST APIs. The common usage of `*` is in custom methods
which don't use the URL at all for transferring data.
It is possible to define multiple HTTP methods for one RPC by using
the `additional_bindings` option. Example:
service Messaging {
rpc GetMessage(GetMessageRequest) returns (Message) {
option (google.api.http) = {
get: "/v1/messages/{message_id}"
additional_bindings {
get: "/v1/users/{user_id}/messages/{message_id}"
}
};
}
}
message GetMessageRequest {
string message_id = 1;
string user_id = 2;
}
This enables the following two alternative HTTP JSON to RPC
mappings:
HTTP | RPC
-----|-----
`GET /v1/messages/123456` | `GetMessage(message_id: "123456")`
`GET /v1/users/me/messages/123456` | `GetMessage(user_id: "me" message_id: "123456")`
# Rules for HTTP mapping
The rules for mapping HTTP path, query parameters, and body fields
to the request message are as follows:
1. The `body` field specifies either `*` or a field path, or is
omitted. If omitted, it indicates there is no HTTP request body.
2. Leaf fields (recursive expansion of nested messages in the
request) can be classified into three types:
(a) Matched in the URL template.
(b) Covered by body (if body is `*`, everything except (a) fields;
else everything under the body field)
(c) All other fields.
3. URL query parameters found in the HTTP request are mapped to (c) fields.
4. Any body sent with an HTTP request can contain only (b) fields.
The syntax of the path template is as follows:
Template = "/" Segments [ Verb ] ;
Segments = Segment { "/" Segment } ;
Segment = "*" | "**" | LITERAL | Variable ;
Variable = "{" FieldPath [ "=" Segments ] "}" ;
FieldPath = IDENT { "." IDENT } ;
Verb = ":" LITERAL ;
The syntax `*` matches a single path segment. The syntax `**` matches zero
or more path segments, which must be the last part of the path except the
`Verb`. The syntax `LITERAL` matches literal text in the path.
The syntax `Variable` matches part of the URL path as specified by its
template. A variable template must not contain other variables. If a variable
matches a single path segment, its template may be omitted, e.g. `{var}`
is equivalent to `{var=*}`.
If a variable contains exactly one path segment, such as `"{var}"` or
`"{var=*}"`, when such a variable is expanded into a URL path, all characters
except `[-_.~0-9a-zA-Z]` are percent-encoded. Such variables show up in the
Discovery Document as `{var}`.
If a variable contains one or more path segments, such as `"{var=foo/*}"`
or `"{var=**}"`, when such a variable is expanded into a URL path, all
characters except `[-_.~/0-9a-zA-Z]` are percent-encoded. Such variables
show up in the Discovery Document as `{+var}`.
NOTE: While the single segment variable matches the semantics of
[RFC 6570](https://tools.ietf.org/html/rfc6570) Section 3.2.2
Simple String Expansion, the multi segment variable **does not** match
RFC 6570 Reserved Expansion. The reason is that the Reserved Expansion
does not expand special characters like `?` and `#`, which would lead
to invalid URLs.
NOTE: the field paths in variables and in the `body` must not refer to
repeated fields or map fields.
Protobuf type google.api.HttpRule| Modifier and Type | Class and Description |
|---|---|
static class |
HttpRule.Builder
`HttpRule` defines the mapping of an RPC method to one or more HTTP
REST API methods.
|
static class |
HttpRule.PatternCase |
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| Modifier and Type | Field and Description |
|---|---|
static int |
ADDITIONAL_BINDINGS_FIELD_NUMBER |
static int |
BODY_FIELD_NUMBER |
static int |
CUSTOM_FIELD_NUMBER |
static int |
DELETE_FIELD_NUMBER |
static int |
GET_FIELD_NUMBER |
static int |
PATCH_FIELD_NUMBER |
static int |
POST_FIELD_NUMBER |
static int |
PUT_FIELD_NUMBER |
static int |
SELECTOR_FIELD_NUMBER |
| Modifier and Type | Method and Description |
|---|---|
boolean |
equals(java.lang.Object obj) |
HttpRule |
getAdditionalBindings(int index)
Additional HTTP bindings for the selector.
|
int |
getAdditionalBindingsCount()
Additional HTTP bindings for the selector.
|
java.util.List<HttpRule> |
getAdditionalBindingsList()
Additional HTTP bindings for the selector.
|
HttpRuleOrBuilder |
getAdditionalBindingsOrBuilder(int index)
Additional HTTP bindings for the selector.
|
java.util.List<? extends HttpRuleOrBuilder> |
getAdditionalBindingsOrBuilderList()
Additional HTTP bindings for the selector.
|
java.lang.String |
getBody()
The name of the request field whose value is mapped to the HTTP body, or
`*` for mapping all fields not captured by the path pattern to the HTTP
body.
|
com.google.protobuf.ByteString |
getBodyBytes()
The name of the request field whose value is mapped to the HTTP body, or
`*` for mapping all fields not captured by the path pattern to the HTTP
body.
|
CustomHttpPattern |
getCustom()
The custom pattern is used for specifying an HTTP method that is not
included in the `pattern` field, such as HEAD, or "*" to leave the
HTTP method unspecified for this rule.
|
CustomHttpPatternOrBuilder |
getCustomOrBuilder()
The custom pattern is used for specifying an HTTP method that is not
included in the `pattern` field, such as HEAD, or "*" to leave the
HTTP method unspecified for this rule.
|
static HttpRule |
getDefaultInstance() |
HttpRule |
getDefaultInstanceForType() |
java.lang.String |
getDelete()
Used for deleting a resource.
|
com.google.protobuf.ByteString |
getDeleteBytes()
Used for deleting a resource.
|
static com.google.protobuf.Descriptors.Descriptor |
getDescriptor() |
java.lang.String |
getGet()
Used for listing and getting information about resources.
|
com.google.protobuf.ByteString |
getGetBytes()
Used for listing and getting information about resources.
|
com.google.protobuf.Parser<HttpRule> |
getParserForType() |
java.lang.String |
getPatch()
Used for updating a resource.
|
com.google.protobuf.ByteString |
getPatchBytes()
Used for updating a resource.
|
HttpRule.PatternCase |
getPatternCase() |
java.lang.String |
getPost()
Used for creating a resource.
|
com.google.protobuf.ByteString |
getPostBytes()
Used for creating a resource.
|
java.lang.String |
getPut()
Used for updating a resource.
|
com.google.protobuf.ByteString |
getPutBytes()
Used for updating a resource.
|
java.lang.String |
getSelector()
Selects methods to which this rule applies.
|
com.google.protobuf.ByteString |
getSelectorBytes()
Selects methods to which this rule applies.
|
int |
getSerializedSize() |
com.google.protobuf.UnknownFieldSet |
getUnknownFields() |
boolean |
hasCustom()
The custom pattern is used for specifying an HTTP method that is not
included in the `pattern` field, such as HEAD, or "*" to leave the
HTTP method unspecified for this rule.
|
int |
hashCode() |
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable |
internalGetFieldAccessorTable() |
boolean |
isInitialized() |
static HttpRule.Builder |
newBuilder() |
static HttpRule.Builder |
newBuilder(HttpRule prototype) |
HttpRule.Builder |
newBuilderForType() |
protected HttpRule.Builder |
newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent) |
static HttpRule |
parseDelimitedFrom(java.io.InputStream input) |
static HttpRule |
parseDelimitedFrom(java.io.InputStream input,
com.google.protobuf.ExtensionRegistryLite extensionRegistry) |
static HttpRule |
parseFrom(byte[] data) |
static HttpRule |
parseFrom(byte[] data,
com.google.protobuf.ExtensionRegistryLite extensionRegistry) |
static HttpRule |
parseFrom(java.nio.ByteBuffer data) |
static HttpRule |
parseFrom(java.nio.ByteBuffer data,
com.google.protobuf.ExtensionRegistryLite extensionRegistry) |
static HttpRule |
parseFrom(com.google.protobuf.ByteString data) |
static HttpRule |
parseFrom(com.google.protobuf.ByteString data,
com.google.protobuf.ExtensionRegistryLite extensionRegistry) |
static HttpRule |
parseFrom(com.google.protobuf.CodedInputStream input) |
static HttpRule |
parseFrom(com.google.protobuf.CodedInputStream input,
com.google.protobuf.ExtensionRegistryLite extensionRegistry) |
static HttpRule |
parseFrom(java.io.InputStream input) |
static HttpRule |
parseFrom(java.io.InputStream input,
com.google.protobuf.ExtensionRegistryLite extensionRegistry) |
static com.google.protobuf.Parser<HttpRule> |
parser() |
HttpRule.Builder |
toBuilder() |
void |
writeTo(com.google.protobuf.CodedOutputStream output) |
canUseUnsafe, computeStringSize, computeStringSizeNoTag, getAllFields, getDescriptorForType, getField, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, hasField, hasOneof, internalGetMapField, makeExtensionsImmutable, newBuilderForType, parseDelimitedWithIOException, parseDelimitedWithIOException, parseUnknownField, parseUnknownFieldProto3, parseWithIOException, parseWithIOException, parseWithIOException, parseWithIOException, serializeBooleanMapTo, serializeIntegerMapTo, serializeLongMapTo, serializeStringMapTo, writeReplace, writeString, writeStringNoTagfindInitializationErrors, getInitializationErrorString, hashBoolean, hashEnum, hashEnumList, hashFields, hashLong, toStringaddAll, addAll, checkByteStringIsUtf8, toByteArray, toByteString, writeDelimitedTo, writeToclone, finalize, getClass, notify, notifyAll, wait, wait, waitpublic static final int SELECTOR_FIELD_NUMBER
public static final int GET_FIELD_NUMBER
public static final int PUT_FIELD_NUMBER
public static final int POST_FIELD_NUMBER
public static final int DELETE_FIELD_NUMBER
public static final int PATCH_FIELD_NUMBER
public static final int CUSTOM_FIELD_NUMBER
public static final int BODY_FIELD_NUMBER
public static final int ADDITIONAL_BINDINGS_FIELD_NUMBER
public final com.google.protobuf.UnknownFieldSet getUnknownFields()
getUnknownFields in interface com.google.protobuf.MessageOrBuildergetUnknownFields in class com.google.protobuf.GeneratedMessageV3public static final com.google.protobuf.Descriptors.Descriptor getDescriptor()
protected com.google.protobuf.GeneratedMessageV3.FieldAccessorTable internalGetFieldAccessorTable()
internalGetFieldAccessorTable in class com.google.protobuf.GeneratedMessageV3public HttpRule.PatternCase getPatternCase()
getPatternCase in interface HttpRuleOrBuilderpublic java.lang.String getSelector()
Selects methods to which this rule applies. Refer to [selector][google.api.DocumentationRule.selector] for syntax details.
string selector = 1;getSelector in interface HttpRuleOrBuilderpublic com.google.protobuf.ByteString getSelectorBytes()
Selects methods to which this rule applies. Refer to [selector][google.api.DocumentationRule.selector] for syntax details.
string selector = 1;getSelectorBytes in interface HttpRuleOrBuilderpublic java.lang.String getGet()
Used for listing and getting information about resources.
string get = 2;getGet in interface HttpRuleOrBuilderpublic com.google.protobuf.ByteString getGetBytes()
Used for listing and getting information about resources.
string get = 2;getGetBytes in interface HttpRuleOrBuilderpublic java.lang.String getPut()
Used for updating a resource.
string put = 3;getPut in interface HttpRuleOrBuilderpublic com.google.protobuf.ByteString getPutBytes()
Used for updating a resource.
string put = 3;getPutBytes in interface HttpRuleOrBuilderpublic java.lang.String getPost()
Used for creating a resource.
string post = 4;getPost in interface HttpRuleOrBuilderpublic com.google.protobuf.ByteString getPostBytes()
Used for creating a resource.
string post = 4;getPostBytes in interface HttpRuleOrBuilderpublic java.lang.String getDelete()
Used for deleting a resource.
string delete = 5;getDelete in interface HttpRuleOrBuilderpublic com.google.protobuf.ByteString getDeleteBytes()
Used for deleting a resource.
string delete = 5;getDeleteBytes in interface HttpRuleOrBuilderpublic java.lang.String getPatch()
Used for updating a resource.
string patch = 6;getPatch in interface HttpRuleOrBuilderpublic com.google.protobuf.ByteString getPatchBytes()
Used for updating a resource.
string patch = 6;getPatchBytes in interface HttpRuleOrBuilderpublic boolean hasCustom()
The custom pattern is used for specifying an HTTP method that is not included in the `pattern` field, such as HEAD, or "*" to leave the HTTP method unspecified for this rule. The wild-card rule is useful for services that provide content to Web (HTML) clients.
.google.api.CustomHttpPattern custom = 8;hasCustom in interface HttpRuleOrBuilderpublic CustomHttpPattern getCustom()
The custom pattern is used for specifying an HTTP method that is not included in the `pattern` field, such as HEAD, or "*" to leave the HTTP method unspecified for this rule. The wild-card rule is useful for services that provide content to Web (HTML) clients.
.google.api.CustomHttpPattern custom = 8;getCustom in interface HttpRuleOrBuilderpublic CustomHttpPatternOrBuilder getCustomOrBuilder()
The custom pattern is used for specifying an HTTP method that is not included in the `pattern` field, such as HEAD, or "*" to leave the HTTP method unspecified for this rule. The wild-card rule is useful for services that provide content to Web (HTML) clients.
.google.api.CustomHttpPattern custom = 8;getCustomOrBuilder in interface HttpRuleOrBuilderpublic java.lang.String getBody()
The name of the request field whose value is mapped to the HTTP body, or `*` for mapping all fields not captured by the path pattern to the HTTP body. NOTE: the referred field must not be a repeated field and must be present at the top-level of request message type.
string body = 7;getBody in interface HttpRuleOrBuilderpublic com.google.protobuf.ByteString getBodyBytes()
The name of the request field whose value is mapped to the HTTP body, or `*` for mapping all fields not captured by the path pattern to the HTTP body. NOTE: the referred field must not be a repeated field and must be present at the top-level of request message type.
string body = 7;getBodyBytes in interface HttpRuleOrBuilderpublic java.util.List<HttpRule> getAdditionalBindingsList()
Additional HTTP bindings for the selector. Nested bindings must not contain an `additional_bindings` field themselves (that is, the nesting may only be one level deep).
repeated .google.api.HttpRule additional_bindings = 11;getAdditionalBindingsList in interface HttpRuleOrBuilderpublic java.util.List<? extends HttpRuleOrBuilder> getAdditionalBindingsOrBuilderList()
Additional HTTP bindings for the selector. Nested bindings must not contain an `additional_bindings` field themselves (that is, the nesting may only be one level deep).
repeated .google.api.HttpRule additional_bindings = 11;getAdditionalBindingsOrBuilderList in interface HttpRuleOrBuilderpublic int getAdditionalBindingsCount()
Additional HTTP bindings for the selector. Nested bindings must not contain an `additional_bindings` field themselves (that is, the nesting may only be one level deep).
repeated .google.api.HttpRule additional_bindings = 11;getAdditionalBindingsCount in interface HttpRuleOrBuilderpublic HttpRule getAdditionalBindings(int index)
Additional HTTP bindings for the selector. Nested bindings must not contain an `additional_bindings` field themselves (that is, the nesting may only be one level deep).
repeated .google.api.HttpRule additional_bindings = 11;getAdditionalBindings in interface HttpRuleOrBuilderpublic HttpRuleOrBuilder getAdditionalBindingsOrBuilder(int index)
Additional HTTP bindings for the selector. Nested bindings must not contain an `additional_bindings` field themselves (that is, the nesting may only be one level deep).
repeated .google.api.HttpRule additional_bindings = 11;getAdditionalBindingsOrBuilder in interface HttpRuleOrBuilderpublic final boolean isInitialized()
isInitialized in interface com.google.protobuf.MessageLiteOrBuilderisInitialized in class com.google.protobuf.GeneratedMessageV3public void writeTo(com.google.protobuf.CodedOutputStream output)
throws java.io.IOException
writeTo in interface com.google.protobuf.MessageLitewriteTo in class com.google.protobuf.GeneratedMessageV3java.io.IOExceptionpublic int getSerializedSize()
getSerializedSize in interface com.google.protobuf.MessageLitegetSerializedSize in class com.google.protobuf.GeneratedMessageV3public boolean equals(java.lang.Object obj)
equals in interface com.google.protobuf.Messageequals in class com.google.protobuf.AbstractMessagepublic int hashCode()
hashCode in interface com.google.protobuf.MessagehashCode in class com.google.protobuf.AbstractMessagepublic static HttpRule parseFrom(java.nio.ByteBuffer data) throws com.google.protobuf.InvalidProtocolBufferException
com.google.protobuf.InvalidProtocolBufferExceptionpublic static HttpRule parseFrom(java.nio.ByteBuffer data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws com.google.protobuf.InvalidProtocolBufferException
com.google.protobuf.InvalidProtocolBufferExceptionpublic static HttpRule parseFrom(com.google.protobuf.ByteString data) throws com.google.protobuf.InvalidProtocolBufferException
com.google.protobuf.InvalidProtocolBufferExceptionpublic static HttpRule parseFrom(com.google.protobuf.ByteString data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws com.google.protobuf.InvalidProtocolBufferException
com.google.protobuf.InvalidProtocolBufferExceptionpublic static HttpRule parseFrom(byte[] data) throws com.google.protobuf.InvalidProtocolBufferException
com.google.protobuf.InvalidProtocolBufferExceptionpublic static HttpRule parseFrom(byte[] data, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws com.google.protobuf.InvalidProtocolBufferException
com.google.protobuf.InvalidProtocolBufferExceptionpublic static HttpRule parseFrom(java.io.InputStream input) throws java.io.IOException
java.io.IOExceptionpublic static HttpRule parseFrom(java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws java.io.IOException
java.io.IOExceptionpublic static HttpRule parseDelimitedFrom(java.io.InputStream input) throws java.io.IOException
java.io.IOExceptionpublic static HttpRule parseDelimitedFrom(java.io.InputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws java.io.IOException
java.io.IOExceptionpublic static HttpRule parseFrom(com.google.protobuf.CodedInputStream input) throws java.io.IOException
java.io.IOExceptionpublic static HttpRule parseFrom(com.google.protobuf.CodedInputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws java.io.IOException
java.io.IOExceptionpublic HttpRule.Builder newBuilderForType()
newBuilderForType in interface com.google.protobuf.MessagenewBuilderForType in interface com.google.protobuf.MessageLitepublic static HttpRule.Builder newBuilder()
public static HttpRule.Builder newBuilder(HttpRule prototype)
public HttpRule.Builder toBuilder()
toBuilder in interface com.google.protobuf.MessagetoBuilder in interface com.google.protobuf.MessageLiteprotected HttpRule.Builder newBuilderForType(com.google.protobuf.GeneratedMessageV3.BuilderParent parent)
newBuilderForType in class com.google.protobuf.GeneratedMessageV3public static HttpRule getDefaultInstance()
public static com.google.protobuf.Parser<HttpRule> parser()
public com.google.protobuf.Parser<HttpRule> getParserForType()
getParserForType in interface com.google.protobuf.MessagegetParserForType in interface com.google.protobuf.MessageLitegetParserForType in class com.google.protobuf.GeneratedMessageV3public HttpRule getDefaultInstanceForType()
getDefaultInstanceForType in interface com.google.protobuf.MessageLiteOrBuildergetDefaultInstanceForType in interface com.google.protobuf.MessageOrBuilder