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("the current configuration ({_0:?}) is unbootable. This should never happen.")]
37    CurrentConfigurationUnbootable(paver::Configuration),
38}
39
40/// Error condition that may be returned by HealthVerification.
41#[derive(Error, Debug)]
42pub enum HealthVerificationError {
43    #[error("fidl error while querying health checks")]
44    Fidl(#[source] fidl::Error),
45    #[error("HealthVerification responded with unhealthy status")]
46    Unhealthy(#[source] Status),
47}
48
49/// Error condition that may be returned by `put_metadata_in_happy_state`.
50#[derive(Error, Debug)]
51pub enum MetadataError {
52    #[error("while doing health verification")]
53    HealthVerification(#[source] HealthVerificationError),
54
55    #[error("while signalling EventPair peer")]
56    SignalPeer(#[source] Status),
57
58    #[error("while sending the unblock")]
59    Unblock,
60
61    #[error("while doing commit")]
62    Commit(#[source] BootManagerError),
63
64    #[error("while interfacing with policy")]
65    Policy(#[source] PolicyError),
66
67    #[error("the commit timed out")]
68    Timeout,
69}
70
71/// Helper to convert fidl's nested errors.
72pub trait BootManagerResultExt {
73    type T;
74
75    fn into_boot_manager_result(
76        self,
77        method_name: &'static str,
78    ) -> Result<Self::T, BootManagerError>;
79}
80
81impl BootManagerResultExt for Result<i32, fidl::Error> {
82    type T = ();
83
84    fn into_boot_manager_result(
85        self: Result<i32, fidl::Error>,
86        method_name: &'static str,
87    ) -> Result<(), BootManagerError> {
88        match self.map(Status::ok) {
89            Ok(Ok(())) => Ok(()),
90            Ok(Err(status)) => Err(BootManagerError::Status { status, method_name }),
91            Err(error) => Err(BootManagerError::Fidl { error, method_name }),
92        }
93    }
94}
95
96impl<T> BootManagerResultExt for Result<Result<T, i32>, fidl::Error> {
97    type T = T;
98
99    fn into_boot_manager_result(
100        self: Result<Result<Self::T, i32>, fidl::Error>,
101        method_name: &'static str,
102    ) -> Result<Self::T, BootManagerError> {
103        match self {
104            Ok(Ok(value)) => Ok(value),
105            Ok(Err(raw)) => {
106                Err(BootManagerError::Status { status: Status::from_raw(raw), method_name })
107            }
108            Err(error) => Err(BootManagerError::Fidl { error, method_name }),
109        }
110    }
111}
system_update_committer/metadata/errors.rs

system_update_committer/metadata/
errors.rs
