Module io.helidon.grpc.core

Package io.helidon.grpc.core

Class GrpcHeadersUtil

java.lang.Object

io.helidon.grpc.core.GrpcHeadersUtil

public class GrpcHeadersUtil
extends Object

Utility class for gRPC metadata and timeout headers.

Method Summary

Modifier and Type	Method	Description
static long	decodeTimeout(String timeout)	Decodes a gRPC grpc-timeout header value.
static String	encodeTimeout(long timeoutNanos)	Encodes a timeout as a gRPC grpc-timeout header value.
static io.grpc.Metadata	toMetadata(Http2Headers headers)	Converts a set of HTTP/2 headers into a Metadata instance.
static void	updateHeaders(WritableHeaders<?> headers, io.grpc.Metadata metadata)	Updates headers with metadata.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

encodeTimeout

public static String encodeTimeout(long timeoutNanos)

Encodes a timeout as a gRPC grpc-timeout header value. The value uses at most eight decimal digits and the finest unit that fits, rounding up when conversion to a coarser unit is necessary.

Parameters:

timeoutNanos - nonnegative timeout in nanoseconds

Returns:

encoded timeout

Throws:

IllegalArgumentException - if the timeout is negative

decodeTimeout

public static long decodeTimeout(String timeout)

Decodes a gRPC grpc-timeout header value. The value must contain one to eight ASCII decimal digits followed by H, M, S, m, u, or n. Timeouts exceeding the nanosecond range are saturated at Long.MAX_VALUE.

Parameters:

timeout - encoded timeout

Returns:

nonnegative timeout in nanoseconds

Throws:

IllegalArgumentException - if the timeout is malformed

updateHeaders

public static void updateHeaders(WritableHeaders<?> headers,
 io.grpc.Metadata metadata)

Updates headers with metadata.

Parameters:

headers - the headers to update

metadata - the metadata

toMetadata

public static io.grpc.Metadata toMetadata(Http2Headers headers)

Converts a set of HTTP/2 headers into a Metadata instance.

Parameters:

headers - the headers to convert

Returns:

the new metadata