system_update_committer/metadata/
errors.rs

1// Copyright 2020 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use fidl_fuchsia_paver as paver;
6use thiserror::Error;
7use zx::Status;
8
9/// Error condition that may be returned by a boot manager client.
10#[derive(Error, Debug)]
11pub enum BootManagerError {
12    #[error("BootManager returned non-ok status while calling {method_name:}")]
13    Status {
14        method_name: &'static str,
15        #[source]
16        status: Status,
17    },
18
19    #[error("fidl error while calling BootManager method {method_name:}")]
20    Fidl {
21        method_name: &'static str,
22        #[source]
23        error: fidl::Error,
24    },
25
26    #[error("the status field of QueryConfigurationStatusAndBootAttempts was not set")]
27    StatusNotSet,
28}
29
30/// Error condition that may be returned by the PolicyEngine.
31#[derive(Error, Debug)]
32pub enum PolicyError {
33    #[error("the policy engine failed to build")]
34    Build(#[source] BootManagerError),
35
36    #[error(
37        "the current configuration ({_0:?}) is unbootable with reason {_1:?}. This should never happen."
38    )]
39    CurrentConfigurationUnbootable(paver::Configuration, Option<paver::UnbootableReason>),
40}
41
42/// Error condition that may be returned by HealthVerification.
43#[derive(Error, Debug)]
44pub enum HealthVerificationError {
45    #[error("fidl error while querying health checks")]
46    Fidl(#[source] fidl::Error),
47    #[error("HealthVerification responded with unhealthy status")]
48    Unhealthy(#[source] Status),
49}
50
51/// Error condition that may be returned by `put_metadata_in_happy_state`.
52#[derive(Error, Debug)]
53pub enum MetadataError {
54    #[error("while doing health verification")]
55    HealthVerification(#[source] HealthVerificationError),
56
57    #[error("while signalling EventPair peer")]
58    SignalPeer(#[source] Status),
59
60    #[error("while sending the unblock")]
61    Unblock,
62
63    #[error("while doing commit")]
64    Commit(#[source] BootManagerError),
65
66    #[error("while interfacing with policy")]
67    Policy(#[source] PolicyError),
68
69    #[error("the commit timed out")]
70    Timeout,
71}
72
73/// Helper to convert fidl's nested errors.
74pub trait BootManagerResultExt {
75    type T;
76
77    fn into_boot_manager_result(
78        self,
79        method_name: &'static str,
80    ) -> Result<Self::T, BootManagerError>;
81}
82
83impl BootManagerResultExt for Result<i32, fidl::Error> {
84    type T = ();
85
86    fn into_boot_manager_result(
87        self: Result<i32, fidl::Error>,
88        method_name: &'static str,
89    ) -> Result<(), BootManagerError> {
90        match self.map(Status::ok) {
91            Ok(Ok(())) => Ok(()),
92            Ok(Err(status)) => Err(BootManagerError::Status { status, method_name }),
93            Err(error) => Err(BootManagerError::Fidl { error, method_name }),
94        }
95    }
96}
97
98impl<T> BootManagerResultExt for Result<Result<T, i32>, fidl::Error> {
99    type T = T;
100
101    fn into_boot_manager_result(
102        self: Result<Result<Self::T, i32>, fidl::Error>,
103        method_name: &'static str,
104    ) -> Result<Self::T, BootManagerError> {
105        match self {
106            Ok(Ok(value)) => Ok(value),
107            Ok(Err(raw)) => {
108                Err(BootManagerError::Status { status: Status::from_raw(raw), method_name })
109            }
110            Err(error) => Err(BootManagerError::Fidl { error, method_name }),
111        }
112    }
113}
system_update_committer/metadata/errors.rs

system_update_committer/metadata/
errors.rs
