--- /dev/null
+// Copyright The OpenTelemetry Authors
+// SPDX-License-Identifier: Apache-2.0
+
+#pragma once
+
+#include <cstdint>
+
+#include "opentelemetry/version.h"
+
+OPENTELEMETRY_BEGIN_NAMESPACE
+namespace trace
+{
+enum class CanonicalCode : uint8_t
+{
+ /**
+ * The operation completed successfully.
+ */
+ OK = 0,
+
+ /**
+ * The operation was cancelled (typically by the caller).
+ */
+ CANCELLED = 1,
+
+ /**
+ * 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.
+ */
+ UNKNOWN = 2,
+
+ /**
+ * 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).
+ */
+ INVALID_ARGUMENT = 3,
+
+ /**
+ * 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.
+ */
+ DEADLINE_EXCEEDED = 4,
+
+ /**
+ * Some requested entity (e.g., file or directory) was not found.
+ */
+ NOT_FOUND = 5,
+
+ /**
+ * Some entity that we attempted to create (e.g., file or directory) already exists.
+ */
+ ALREADY_EXISTS = 6,
+
+ /**
+ * 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).
+ */
+ PERMISSION_DENIED = 7,
+
+ /**
+ * Some resource has been exhausted, perhaps a per-user quota, or perhaps the entire file system
+ * is out of space.
+ */
+ RESOURCE_EXHAUSTED = 8,
+
+ /**
+ * 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.
+ */
+ FAILED_PRECONDITION = 9,
+
+ /**
+ * 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.
+ */
+ ABORTED = 10,
+
+ /**
+ * 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.
+ */
+ OUT_OF_RANGE = 11,
+
+ /**
+ * Operation is not implemented or not supported/enabled in this service.
+ */
+ UNIMPLEMENTED = 12,
+
+ /**
+ * Internal errors. Means some invariants expected by underlying system has been broken. If you
+ * see one of these errors, something is very broken.
+ */
+ INTERNAL = 13,
+
+ /**
+ * The service is currently unavailable. This is a most likely a transient condition and may be
+ * corrected by retrying with a backoff.
+ *
+ * See litmus test above for deciding between FAILED_PRECONDITION, ABORTED, and UNAVAILABLE.
+ */
+ UNAVAILABLE = 14,
+
+ /**
+ * Unrecoverable data loss or corruption.
+ */
+ DATA_LOSS = 15,
+
+ /**
+ * The request does not have valid authentication credentials for the operation.
+ */
+ UNAUTHENTICATED = 16,
+};
+
+} // namespace trace
+OPENTELEMETRY_END_NAMESPACE