1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
//! Container service interface.
use boxlite_shared::{
BindMount, BoxliteError, BoxliteResult, CaCert, ContainerClient,
ContainerConfig as ProtoContainerConfig, ContainerInitRequest, DiskRootfs, MergedRootfs,
OverlayRootfs, RootfsInit, container_init_response,
};
use tonic::transport::Channel;
use crate::volumes::ContainerMount;
/// Container rootfs initialization strategy.
/// Guest constructs paths from container_id using its own layout knowledge.
#[derive(Debug, Clone)]
pub enum ContainerRootfsInitConfig {
/// Single merged rootfs - guest constructs path from container_id
#[allow(dead_code)] // Reserved for future merged rootfs mode
Merged,
/// Overlayfs from multiple layers - guest constructs paths from container_id and layer_names
#[allow(dead_code)] // Reserved for future overlayfs mode
Overlay {
/// Layer directory names (e.g., "sha256-abc123")
layer_names: Vec<String>,
/// Whether to copy layers to disk before overlayfs (default: true)
copy_layers: bool,
},
/// Disk-based rootfs - block device mounted directly as container rootfs
DiskImage {
/// Block device path (e.g., "/dev/vda")
device: String,
/// Whether to format the device before mounting
need_format: bool,
/// Whether to resize filesystem after mounting to fill disk
need_resize: bool,
},
}
impl ContainerRootfsInitConfig {
pub(crate) fn into_proto(self) -> RootfsInit {
match self {
ContainerRootfsInitConfig::Merged => RootfsInit {
strategy: Some(boxlite_shared::rootfs_init::Strategy::Merged(
MergedRootfs {},
)),
},
ContainerRootfsInitConfig::Overlay {
layer_names,
copy_layers,
} => RootfsInit {
strategy: Some(boxlite_shared::rootfs_init::Strategy::Overlay(
OverlayRootfs {
layer_names,
copy_layers,
},
)),
},
ContainerRootfsInitConfig::DiskImage {
device,
need_format,
need_resize,
} => RootfsInit {
strategy: Some(boxlite_shared::rootfs_init::Strategy::Disk(DiskRootfs {
device,
need_format,
need_resize,
})),
},
}
}
}
/// Container service interface.
pub struct ContainerInterface {
client: ContainerClient<Channel>,
}
impl ContainerInterface {
/// Create from a channel.
pub fn new(channel: Channel) -> Self {
Self {
client: ContainerClient::new(channel),
}
}
/// Initialize container with configuration.
///
/// # Arguments
/// * `container_id` - Container ID (generated by host)
/// * `image_config` - Image-derived container config (entrypoint, env, workdir)
/// * `rootfs` - Rootfs initialization strategy
/// * `mounts` - Bind mounts from guest VM paths into container
///
/// # Returns
/// Container ID on success
pub async fn init(
&mut self,
container_id: &str,
image_config: crate::images::ContainerImageConfig,
rootfs: ContainerRootfsInitConfig,
mounts: Vec<ContainerMount>,
ca_certs: Vec<String>,
) -> BoxliteResult<String> {
let proto_config = ProtoContainerConfig {
entrypoint: image_config.final_cmd(),
env: image_config.env.clone(),
workdir: image_config.working_dir.clone(),
user: image_config.user.clone(),
};
// Convert ContainerMount to proto BindMount
// Uses convention-based paths - guest will construct full path from volume_name
let proto_mounts: Vec<BindMount> = mounts
.into_iter()
.map(|m| BindMount {
volume_name: m.volume_name,
destination: m.destination,
read_only: m.read_only,
owner_uid: m.owner_uid,
owner_gid: m.owner_gid,
})
.collect();
tracing::debug!(container_id = %container_id, "Sending ContainerInit request");
tracing::trace!(
container_id = %container_id,
entrypoint = ?image_config.entrypoint,
cmd = ?image_config.cmd,
user = %image_config.user,
workdir = %image_config.working_dir,
env_count = image_config.env.len(),
rootfs = ?rootfs,
mounts_count = proto_mounts.len(),
"Container configuration"
);
let request = ContainerInitRequest {
container_id: container_id.to_string(),
container_config: Some(proto_config),
rootfs: Some(rootfs.into_proto()),
mounts: proto_mounts,
ca_certs: ca_certs.into_iter().map(|pem| CaCert { pem }).collect(),
};
let response = self.client.init(request).await?.into_inner();
match response.result {
Some(container_init_response::Result::Success(success)) => {
tracing::debug!(container_id = %success.container_id, "Container initialized");
Ok(success.container_id)
}
Some(container_init_response::Result::Error(err)) => {
tracing::error!(container_id = %container_id, "Container init failed: {}", err.reason);
Err(BoxliteError::Internal(format!(
"Container init failed: {}",
err.reason
)))
}
None => Err(BoxliteError::Internal(
"ContainerInit response missing result".to_string(),
)),
}
}
}