120 lines
3.5 KiB
C++
120 lines
3.5 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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// Copyright 2017 Google LLC.
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//
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// This software is licensed under the terms defined in the Widevine Master
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// License Agreement. For a copy of this agreement, please contact
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// widevine-licensing@google.com.
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////////////////////////////////////////////////////////////////////////////////
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#ifndef UTIL_STATUS_H_
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#define UTIL_STATUS_H_
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#include <string>
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#include "util/error_space.h"
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namespace widevine {
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namespace util {
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namespace error {
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enum StatusCode {
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// Success.
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OK = 0,
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// Client specified an invalid argument.
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INVALID_ARGUMENT = 3,
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// Some requested entity (e.g., file or directory) was not found.
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NOT_FOUND = 5,
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// Some entity that we attempted to create (e.g., file or directory)
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// already exists.
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ALREADY_EXISTS = 6,
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// The caller does not have permission to execute the specified
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// operation. PERMISSION_DENIED must not be used for rejections
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// caused by exhausting some resource (use RESOURCE_EXHAUSTED
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// instead for those errors).
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PERMISSION_DENIED = 7,
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// Operation is not implemented or not supported/enabled in this service.
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UNIMPLEMENTED = 12,
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// Internal errors. Means some invariants expected by underlying
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// system has been broken. If you see one of these errors,
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// something is very broken.
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INTERNAL = 13,
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// Operation is not implemented or not supported/enabled in this service.
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UNAVAILABLE = 14,
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// Number of generic (non license related) errors.
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NUM_ERRORS,
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};
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} // namespace error
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class GenericErrorSpace : public ErrorSpaceImpl<GenericErrorSpace> {
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public:
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static std::string SpaceName();
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static std::string CodeToString(int code);
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};
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class Status {
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public:
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Status() : status_code_(error::OK) {}
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~Status() {}
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explicit Status(error::StatusCode c) : status_code_(c) {}
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Status(error::StatusCode c, const std::string& error_message)
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: status_code_(c), error_message_(error_message) {}
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Status(const ErrorSpace* e, error::StatusCode c,
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const std::string& error_message) {
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SetError(e, c, error_message);
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}
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Status(const ErrorSpace* e, int error, const std::string& error_message) {
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SetError(e, error, error_message);
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}
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void SetError(const ErrorSpace* e, int c, const std::string& error_message) {
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error_space_ = e;
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status_code_ = c;
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error_message_ = error_message;
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}
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bool ok() const { return status_code_ == error::OK; }
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const ErrorSpace* error_space() const { return error_space_; }
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static const ErrorSpace* canonical_space() {
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return GenericErrorSpace::Get();
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}
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std::string ToString() const;
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std::string error_message() const { return error_message_; }
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int error_code() const { return status_code_; }
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private:
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const ErrorSpace* error_space_ = GenericErrorSpace::Get();
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int status_code_;
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std::string error_message_;
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}; // class Status
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inline Status OkStatus() { return Status(); }
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// Here error_message_ is ignored during comparison.
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inline bool operator==(const Status& s1, const Status& s2) {
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return s1.error_space() == s2.error_space() &&
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s1.error_code() == s2.error_code();
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}
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inline bool operator!=(const Status& s1, const Status& s2) {
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return s1.error_space() != s2.error_space() ||
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s1.error_code() != s2.error_code();
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}
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// Prints a human-readable representation of 'x' to 'os'.
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std::ostream& operator<<(std::ostream& os, const Status& x);
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#define CHECK_OK(expression) CHECK(expression.ok()) << expression.ToString()
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} // namespace util
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} // namespace widevine
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#endif // UTIL_STATUS_H_
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