Module io.helidon.webserver.grpc
Package io.helidon.webserver.grpc

Class GrpcStatus

java.lang.Object
io.helidon.webserver.grpc.GrpcStatus
public final class GrpcStatus extends Object
Status headers for defined grpc states.
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final io.helidon.http.Header
    ABORTED
    The operation was aborted, typically due to a concurrency issue like sequencer check failures, transaction aborts, etc.
    static final io.helidon.http.Header
    ALREADY_EXISTS
    Some entity that we attempted to create (e.g., file or directory) already exists.
    static final io.helidon.http.Header
    CANCELLED
    The operation was cancelled (typically by the caller).
    static final io.helidon.http.Header
    DATA_LOSS
    Unrecoverable data loss or corruption.
    static final io.helidon.http.Header
    DEADLINE_EXCEEDED
    Deadline expired before operation could complete.
    static final io.helidon.http.Header
    FAILED_PRECONDITION
    Operation was rejected because the system is not in a state required for the operation's execution.
    static final io.helidon.http.Header
    INTERNAL
    Internal errors.
    static final io.helidon.http.Header
    INVALID_ARGUMENT
    Client specified an invalid argument.
    static final io.helidon.http.HeaderName
    MESSAGE_NAME
    grpc status message header name.
    static final io.helidon.http.Header
    NOT_FOUND
    Some requested entity (e.g., file or directory) was not found.
    static final io.helidon.http.Header
    OK
    The operation completed successfully.
    static final io.helidon.http.Header
    OUT_OF_RANGE
    Operation was attempted past the valid range.
    static final io.helidon.http.Header
    PERMISSION_DENIED
    The caller does not have permission to execute the specified operation.
    static final io.helidon.http.Header
    RESOURCE_EXHAUSTED
    Some resource has been exhausted, perhaps a per-user quota, or perhaps the entire file system is out of space.
    static final io.helidon.http.HeaderName
    STATUS_NAME
    grpc status header name.
    static final io.helidon.http.Header
    UNAUTHENTICATED
    The request does not have valid authentication credentials for the operation.
    static final io.helidon.http.Header
    UNAVAILABLE
    The service is currently unavailable.
    static final io.helidon.http.Header
    UNIMPLEMENTED
    Operation is not implemented or not supported/enabled in this service.
    static final io.helidon.http.Header
    UNKNOWN
    Unknown error.

  • Method Summary

    Methods inherited from class java.lang.Object

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

  • Field Details

    • STATUS_NAME

      public static final io.helidon.http.HeaderName STATUS_NAME
      grpc status header name.

    • MESSAGE_NAME

      public static final io.helidon.http.HeaderName MESSAGE_NAME
      grpc status message header name.

    • OK

      public static final io.helidon.http.Header OK
      The operation completed successfully.

    • CANCELLED

      public static final io.helidon.http.Header CANCELLED
      The operation was cancelled (typically by the caller).

    • UNKNOWN

      public static final io.helidon.http.Header UNKNOWN
      Unknown error. An example of where this error may be returned is if a Status value received from another address space belongs to an error-space that is not known in this address space. Also errors raised by APIs that do not return enough error information may be converted to this error.

    • INVALID_ARGUMENT

      public static final io.helidon.http.Header INVALID_ARGUMENT
      Client specified an invalid argument. Note that this differs from FAILED_PRECONDITION. INVALID_ARGUMENT indicates arguments that are problematic regardless of the state of the system (e.g., a malformed file name).

    • DEADLINE_EXCEEDED

      public static final io.helidon.http.Header DEADLINE_EXCEEDED
      Deadline expired before operation could complete. For operations that change the state of the system, this error may be returned even if the operation has completed successfully. For example, a successful response from a server could have been delayed long enough for the deadline to expire.

    • NOT_FOUND

      public static final io.helidon.http.Header NOT_FOUND
      Some requested entity (e.g., file or directory) was not found.

    • ALREADY_EXISTS

      public static final io.helidon.http.Header ALREADY_EXISTS
      Some entity that we attempted to create (e.g., file or directory) already exists.

    • PERMISSION_DENIED

      public static final io.helidon.http.Header PERMISSION_DENIED
      The caller does not have permission to execute the specified operation. PERMISSION_DENIED must not be used for rejections caused by exhausting some resource (use RESOURCE_EXHAUSTED instead for those errors). PERMISSION_DENIED must not be used if the caller cannot be identified (use UNAUTHENTICATED instead for those errors).

    • RESOURCE_EXHAUSTED

      public static final io.helidon.http.Header RESOURCE_EXHAUSTED
      Some resource has been exhausted, perhaps a per-user quota, or perhaps the entire file system is out of space.

    • FAILED_PRECONDITION

      public static final io.helidon.http.Header FAILED_PRECONDITION
      Operation was rejected because the system is not in a state required for the operation's execution. For example, directory to be deleted may be non-empty, an rmdir operation is applied to a non-directory, etc.

      A litmus test that may help a service implementor in deciding between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE: (a) Use UNAVAILABLE if the client can retry just the failing call. (b) Use ABORTED if the client should retry at a higher-level (e.g., restarting a read-modify-write sequence). (c) Use FAILED_PRECONDITION if the client should not retry until the system state has been explicitly fixed. E.g., if an "rmdir" fails because the directory is non-empty, FAILED_PRECONDITION should be returned since the client should not retry unless they have first fixed up the directory by deleting files from it.

    • ABORTED

      public static final io.helidon.http.Header ABORTED
      The operation was aborted, typically due to a concurrency issue like sequencer check failures, transaction aborts, etc.

      See litmus test above for deciding between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE.

    • OUT_OF_RANGE

      public static final io.helidon.http.Header OUT_OF_RANGE
      Operation was attempted past the valid range. E.g., seeking or reading past end of file.

      Unlike INVALID_ARGUMENT, this error indicates a problem that may be fixed if the system state changes. For example, a 32-bit file system will generate INVALID_ARGUMENT if asked to read at an offset that is not in the range [0,2^32-1], but it will generate OUT_OF_RANGE if asked to read from an offset past the current file size.

      There is a fair bit of overlap between FAILED_PRECONDITION and OUT_OF_RANGE. We recommend using OUT_OF_RANGE (the more specific error) when it applies so that callers who are iterating through a space can easily look for an OUT_OF_RANGE error to detect when they are done.

    • UNIMPLEMENTED

      public static final io.helidon.http.Header UNIMPLEMENTED
      Operation is not implemented or not supported/enabled in this service.

    • INTERNAL

      public static final io.helidon.http.Header INTERNAL
      Internal errors. Means some invariants expected by underlying system has been broken. If you see one of these errors, something is very broken.

    • UNAVAILABLE

      public static final io.helidon.http.Header UNAVAILABLE
      The service is currently unavailable. This is a most likely a transient condition and may be corrected by retrying with a backoff. Note that it is not always safe to retry non-idempotent operations.

      See litmus test above for deciding between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE.

    • DATA_LOSS

      public static final io.helidon.http.Header DATA_LOSS
      Unrecoverable data loss or corruption.

    • UNAUTHENTICATED

      public static final io.helidon.http.Header UNAUTHENTICATED
      The request does not have valid authentication credentials for the operation.