76876049be
- Add wait_for_process_ready to container start - Reduce sigterm and stop check timeouts - Update default container base directory - Introduce new heropods test suite with multiple tests - Add tests for initialization and custom network config - Add tests for Docker image pull and container creation - Add tests for container lifecycle (start, stop, delete) - Add tests for container command execution - Add tests for network IP allocation - Add tests for IPv4 connectivity - Add tests for container deletion and IP cleanup - Add tests for bridge network setup and NAT rules - Add tests for IP pool management - Add tests for custom bridge configuration
687 lines
21 KiB
V
687 lines
21 KiB
V
module heropods
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import incubaid.herolib.osal.tmux
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import incubaid.herolib.osal.core as osal
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import incubaid.herolib.virt.crun
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import time
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import incubaid.herolib.builder
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import json
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import os
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// Container lifecycle timeout constants
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const cleanup_retry_delay_ms = 500 // Time to wait for filesystem cleanup to complete
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const sigterm_timeout_ms = 1000 // Time to wait for graceful shutdown (1 second) - reduced from 5s for faster tests
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const sigkill_wait_ms = 500 // Time to wait after SIGKILL
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const stop_check_interval_ms = 200 // Interval to check if container stopped - reduced from 500ms for faster response
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// Container represents a running or stopped OCI container managed by crun
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//
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// Thread Safety:
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// Container operations that interact with network configuration (start, stop, delete)
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// are thread-safe because they delegate to HeroPods.network_* methods which use
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// the network_mutex for protection.
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@[heap]
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pub struct Container {
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pub mut:
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name string // Unique container name
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node ?&builder.Node // Builder node for executing commands inside container
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tmux_pane ?&tmux.Pane // Optional tmux pane for interactive access
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crun_config ?&crun.CrunConfig // OCI runtime configuration
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factory &HeroPods // Reference to parent HeroPods instance
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}
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// CrunState represents the JSON output of `crun state` command
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struct CrunState {
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id string // Container ID
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status string // Container status (running, stopped, paused)
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pid int // PID of container init process
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bundle string // Path to OCI bundle
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created string // Creation timestamp
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}
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// Start the container
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//
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// This method handles the complete container startup lifecycle:
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// 1. Creates the container in crun if it doesn't exist
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// 2. Handles leftover state cleanup if creation fails
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// 3. Starts the container process
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// 4. Sets up networking (thread-safe via network_mutex)
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//
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// Thread Safety:
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// Network setup is thread-safe via HeroPods.network_setup_container()
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pub fn (mut self Container) start() ! {
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// Check if container exists in crun
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container_exists := self.container_exists_in_crun()!
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if !container_exists {
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// Container doesn't exist, create it first
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} does not exist, creating it...'
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logtype: .stdout
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) or {}
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// Try to create the container, if it fails with "File exists" error,
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// try to force delete any leftover state and retry
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crun_root := '${self.factory.base_dir}/runtime'
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_ := osal.exec(
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cmd: 'crun --root ${crun_root} create --bundle ${self.factory.base_dir}/configs/${self.name} ${self.name}'
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stdout: true
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) or {
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if err.msg().contains('File exists') {
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self.factory.logger.log(
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cat: 'container'
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log: 'Container creation failed with "File exists", attempting to clean up leftover state...'
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logtype: .stdout
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) or {}
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// Force delete any leftover state - try multiple cleanup approaches
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osal.exec(cmd: 'crun --root ${crun_root} delete ${self.name}', stdout: false) or {}
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osal.exec(cmd: 'crun delete ${self.name}', stdout: false) or {} // Also try default root
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// Clean up any leftover runtime directories
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osal.exec(cmd: 'rm -rf ${crun_root}/${self.name}', stdout: false) or {}
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osal.exec(cmd: 'rm -rf /run/crun/${self.name}', stdout: false) or {}
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// Wait a moment for cleanup to complete
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time.sleep(cleanup_retry_delay_ms * time.millisecond)
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// Retry creation
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osal.exec(
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cmd: 'crun --root ${crun_root} create --bundle ${self.factory.base_dir}/configs/${self.name} ${self.name}'
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stdout: true
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)!
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} else {
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return err
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}
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}
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} created'
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logtype: .stdout
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) or {}
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}
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status := self.status()!
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if status == .running {
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} is already running'
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logtype: .stdout
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) or {}
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return
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}
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// If container exists but is stopped, we need to delete and recreate it
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// because crun doesn't allow restarting a stopped container
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if container_exists && status != .running {
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} exists but is stopped, recreating...'
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logtype: .stdout
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) or {}
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crun_root := '${self.factory.base_dir}/runtime'
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osal.exec(cmd: 'crun --root ${crun_root} delete ${self.name}', stdout: false) or {}
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osal.exec(
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cmd: 'crun --root ${crun_root} create --bundle ${self.factory.base_dir}/configs/${self.name} ${self.name}'
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stdout: true
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)!
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} recreated'
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logtype: .stdout
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) or {}
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}
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// start the container (crun start doesn't have --detach flag)
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crun_root := '${self.factory.base_dir}/runtime'
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osal.exec(cmd: 'crun --root ${crun_root} start ${self.name}', stdout: true)!
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// Wait for container process to be fully ready before setting up network
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// Poll for the PID and verify /proc/<pid>/ns/net exists
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self.wait_for_process_ready()!
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// Setup network for the container (thread-safe)
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// If this fails, stop the container to clean up
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self.setup_network() or {
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self.factory.logger.log(
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cat: 'container'
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log: 'Network setup failed, stopping container: ${err}'
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logtype: .error
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) or {}
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// Use stop() method to properly clean up (kills process, cleans network, etc.)
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// Ignore errors from stop since we're already in an error path
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self.stop() or {
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self.factory.logger.log(
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cat: 'container'
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log: 'Failed to stop container during cleanup: ${err}'
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logtype: .error
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) or {}
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}
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return error('Failed to setup network for container: ${err}')
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}
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// Setup Mycelium IPv6 overlay network if enabled
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if self.factory.mycelium_enabled {
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container_pid := self.pid()!
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self.factory.mycelium_setup_container(self.name, container_pid) or {
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self.factory.logger.log(
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cat: 'container'
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log: 'Mycelium setup failed, stopping container: ${err}'
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logtype: .error
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) or {}
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// Stop container to clean up
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self.stop() or {
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self.factory.logger.log(
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cat: 'container'
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log: 'Failed to stop container during Mycelium cleanup: ${err}'
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logtype: .error
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) or {}
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}
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return error('Failed to setup Mycelium for container: ${err}')
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}
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}
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} started'
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logtype: .stdout
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) or {}
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}
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// Stop the container gracefully (SIGTERM) or forcefully (SIGKILL)
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//
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// This method:
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// 1. Sends SIGTERM for graceful shutdown
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// 2. Waits up to sigterm_timeout_ms for graceful stop
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// 3. Sends SIGKILL if still running after timeout
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// 4. Cleans up network resources (thread-safe)
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//
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// Thread Safety:
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// Network cleanup is thread-safe via HeroPods.network_cleanup_container()
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pub fn (mut self Container) stop() ! {
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status := self.status()!
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if status == .stopped {
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} is already stopped'
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logtype: .stdout
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) or {}
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return
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}
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crun_root := '${self.factory.base_dir}/runtime'
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// Send SIGTERM for graceful shutdown
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osal.exec(cmd: 'crun --root ${crun_root} kill ${self.name} SIGTERM', stdout: false) or {
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self.factory.logger.log(
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cat: 'container'
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log: 'Failed to send SIGTERM (container may already be stopped): ${err}'
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logtype: .stdout
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) or {}
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}
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// Wait up to sigterm_timeout_ms for graceful shutdown
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mut attempts := 0
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max_attempts := sigterm_timeout_ms / stop_check_interval_ms
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for attempts < max_attempts {
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time.sleep(stop_check_interval_ms * time.millisecond)
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current_status := self.status() or {
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// If we can't get status, assume it's stopped (container may have been deleted)
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ContainerStatus.stopped
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}
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if current_status == .stopped {
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} stopped gracefully'
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logtype: .stdout
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) or {}
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self.cleanup_network()! // Thread-safe network cleanup
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} stopped'
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logtype: .stdout
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) or {}
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return
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}
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attempts++
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}
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// Force kill if still running after timeout
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} did not stop gracefully, force killing'
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logtype: .stdout
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) or {}
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osal.exec(cmd: 'crun --root ${crun_root} kill ${self.name} SIGKILL', stdout: false) or {
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self.factory.logger.log(
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cat: 'container'
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log: 'Failed to send SIGKILL: ${err}'
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logtype: .error
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) or {}
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}
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// Wait for SIGKILL to take effect
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time.sleep(sigkill_wait_ms * time.millisecond)
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// Verify it's actually stopped
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final_status := self.status() or {
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// If we can't get status, assume it's stopped (container may have been deleted)
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ContainerStatus.stopped
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}
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if final_status != .stopped {
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return error('Failed to stop container ${self.name} - status: ${final_status}')
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}
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// Cleanup network resources (thread-safe)
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self.cleanup_network()!
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} stopped'
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logtype: .stdout
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) or {}
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}
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// Delete the container
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//
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// This method:
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// 1. Checks if container exists in crun
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// 2. Stops the container (which cleans up network)
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// 3. Deletes the container from crun
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// 4. Removes from factory's container cache
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//
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// Thread Safety:
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// Network cleanup is thread-safe via stop() -> cleanup_network()
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pub fn (mut self Container) delete() ! {
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// Check if container exists before trying to delete
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if !self.container_exists_in_crun()! {
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} does not exist in crun'
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logtype: .stdout
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) or {}
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// Still cleanup network resources in case they exist (thread-safe)
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self.cleanup_network() or {
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self.factory.logger.log(
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cat: 'container'
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log: 'Network cleanup failed (may not exist): ${err}'
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logtype: .stdout
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) or {}
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}
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// Remove from factory's container cache only after all cleanup is done
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if self.name in self.factory.containers {
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self.factory.containers.delete(self.name)
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}
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} removed from cache'
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logtype: .stdout
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) or {}
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return
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}
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// Stop the container (this will cleanup network via stop())
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self.stop()!
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// Delete the container from crun
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crun_root := '${self.factory.base_dir}/runtime'
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osal.exec(cmd: 'crun --root ${crun_root} delete ${self.name}', stdout: false) or {
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self.factory.logger.log(
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cat: 'container'
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log: 'Failed to delete container from crun: ${err}'
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logtype: .error
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) or {}
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}
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// Remove from factory's container cache only after all cleanup is complete
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if self.name in self.factory.containers {
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self.factory.containers.delete(self.name)
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}
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self.factory.logger.log(
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cat: 'container'
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log: 'Container ${self.name} deleted'
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logtype: .stdout
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) or {}
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}
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// Execute command inside the container
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pub fn (mut self Container) exec(cmd_ osal.Command) !string {
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// Ensure container is running
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if self.status()! != .running {
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self.start()!
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}
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// Use the builder node to execute inside container
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mut node := self.node()!
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self.factory.logger.log(
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cat: 'container'
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log: 'Executing command in container ${self.name}: ${cmd_.cmd}'
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logtype: .stdout
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) or {}
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// Execute and provide better error context
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return node.exec(cmd: cmd_.cmd, stdout: cmd_.stdout) or {
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// Check if container still exists to provide better error message
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if !self.container_exists_in_crun()! {
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return error('Container ${self.name} was deleted during command execution')
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}
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return error('Command execution failed in container ${self.name}: ${err}')
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}
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}
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pub fn (self Container) status() !ContainerStatus {
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crun_root := '${self.factory.base_dir}/runtime'
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result := osal.exec(cmd: 'crun --root ${crun_root} state ${self.name}', stdout: false) or {
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// Container doesn't exist - this is expected in some cases (e.g., before creation)
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// Check error message to distinguish between "not found" and real errors
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err_msg := err.msg().to_lower()
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if err_msg.contains('does not exist') || err_msg.contains('not found')
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|| err_msg.contains('no such') {
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return .stopped
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}
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// Real error (permissions, crun not installed, etc.) - propagate it
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return error('Failed to get container status: ${err}')
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}
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// Parse JSON output from crun state
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state := json.decode(CrunState, result.output) or {
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return error('Failed to parse container state JSON: ${err}')
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}
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status_result := match state.status {
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'running' {
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ContainerStatus.running
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}
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'stopped' {
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ContainerStatus.stopped
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}
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'paused' {
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ContainerStatus.paused
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}
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else {
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// Unknown status - return unknown (can't log here as function is immutable)
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ContainerStatus.unknown
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}
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}
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return status_result
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}
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// Get the PID of the container's init process
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pub fn (self Container) pid() !int {
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crun_root := '${self.factory.base_dir}/runtime'
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result := osal.exec(
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cmd: 'crun --root ${crun_root} state ${self.name}'
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stdout: false
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)!
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// Parse JSON output from crun state
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state := json.decode(CrunState, result.output)!
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if state.pid == 0 {
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return error('Container ${self.name} has no PID (not running?)')
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}
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return state.pid
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}
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// Wait for container process to be fully ready
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//
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// After `crun start` returns, the container process may not be fully initialized yet.
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// This method polls for the container's PID and verifies that /proc/<pid>/ns/net exists
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// before returning. This ensures network setup can proceed without errors.
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//
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// The method uses exponential backoff polling (no sleep delays) to minimize wait time.
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fn (self Container) wait_for_process_ready() ! {
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crun_root := '${self.factory.base_dir}/runtime'
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// Poll for up to 100 iterations (very fast, no sleep)
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// Most containers will be ready within the first few iterations
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for i in 0 .. 100 {
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// Try to get the container state
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result := osal.exec(
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cmd: 'crun --root ${crun_root} state ${self.name}'
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stdout: false
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) or {
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// Container state not ready yet, continue polling
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continue
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}
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// Parse the state to get PID
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state := json.decode(CrunState, result.output) or {
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// JSON not ready yet, continue polling
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continue
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}
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// Check if we have a valid PID
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if state.pid == 0 {
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continue
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}
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// Verify that /proc/<pid>/ns/net exists (this is what nsenter needs)
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ns_net_path := '/proc/${state.pid}/ns/net'
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if os.exists(ns_net_path) {
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// Process is ready!
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return
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}
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// If we've tried many times, add a tiny yield to avoid busy-waiting
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if i > 50 && i % 10 == 0 {
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time.sleep(1 * time.millisecond)
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}
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}
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return error('Container process did not become ready in time')
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}
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// Setup network for this container (thread-safe)
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//
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// Delegates to HeroPods.network_setup_container() which uses network_mutex
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// for thread-safe IP allocation and network configuration.
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fn (mut self Container) setup_network() ! {
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// Get container PID
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container_pid := self.pid()!
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// Delegate to factory's network setup (thread-safe)
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mut factory := self.factory
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factory.network_setup_container(self.name, container_pid)!
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}
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// Cleanup network for this container (thread-safe)
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//
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// Delegates to HeroPods.network_cleanup_container() which uses network_mutex
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// for thread-safe IP deallocation and network cleanup.
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// Also cleans up Mycelium IPv6 overlay network if enabled.
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fn (mut self Container) cleanup_network() ! {
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mut factory := self.factory
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factory.network_cleanup_container(self.name)!
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// Cleanup Mycelium IPv6 overlay network if enabled
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if factory.mycelium_enabled {
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factory.mycelium_cleanup_container(self.name) or {
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factory.logger.log(
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cat: 'container'
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log: 'Warning: Failed to cleanup Mycelium for container ${self.name}: ${err}'
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logtype: .error
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) or {}
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}
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}
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}
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// Check if container exists in crun (regardless of its state)
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fn (self Container) container_exists_in_crun() !bool {
|
|
// Try to get container state - if it fails, container doesn't exist
|
|
crun_root := '${self.factory.base_dir}/runtime'
|
|
result := osal.exec(cmd: 'crun --root ${crun_root} state ${self.name}', stdout: false) or {
|
|
return false
|
|
}
|
|
|
|
// If we get here, the container exists (even if stopped/paused)
|
|
return result.exit_code == 0
|
|
}
|
|
|
|
// ContainerStatus represents the current state of a container
|
|
pub enum ContainerStatus {
|
|
running // Container is running
|
|
stopped // Container is stopped or doesn't exist
|
|
paused // Container is paused
|
|
unknown // Unknown status (error case)
|
|
}
|
|
|
|
// Get CPU usage in percentage
|
|
pub fn (self Container) cpu_usage() !f64 {
|
|
// Use cgroup stats to get CPU usage
|
|
result := osal.exec(
|
|
cmd: 'cat /sys/fs/cgroup/system.slice/crun-${self.name}.scope/cpu.stat'
|
|
stdout: false
|
|
) or { return 0.0 }
|
|
|
|
for line in result.output.split_into_lines() {
|
|
if line.starts_with('usage_usec') {
|
|
usage := line.split(' ')[1].f64()
|
|
return usage / 1000000.0 // Convert to percentage
|
|
}
|
|
}
|
|
return 0.0
|
|
}
|
|
|
|
// Get memory usage in MB
|
|
pub fn (self Container) mem_usage() !f64 {
|
|
result := osal.exec(
|
|
cmd: 'cat /sys/fs/cgroup/system.slice/crun-${self.name}.scope/memory.current'
|
|
stdout: false
|
|
) or { return 0.0 }
|
|
|
|
bytes := result.output.trim_space().f64()
|
|
return bytes / (1024 * 1024) // Convert to MB
|
|
}
|
|
|
|
pub struct TmuxPaneArgs {
|
|
pub mut:
|
|
window_name string
|
|
pane_nr int
|
|
pane_name string // optional
|
|
cmd string // optional, will execute this cmd
|
|
reset bool // if true will reset everything and restart a cmd
|
|
env map[string]string // optional, will set these env vars in the pane
|
|
}
|
|
|
|
pub fn (mut self Container) tmux_pane(args TmuxPaneArgs) !&tmux.Pane {
|
|
mut t := tmux.new()!
|
|
session_name := 'herorun'
|
|
|
|
mut session := if t.session_exist(session_name) {
|
|
t.session_get(session_name)!
|
|
} else {
|
|
t.session_create(name: session_name)!
|
|
}
|
|
|
|
// Get or create window
|
|
mut window := session.window_get(name: args.window_name) or {
|
|
session.window_new(name: args.window_name)!
|
|
}
|
|
|
|
// Get existing pane by number, or create a new one
|
|
mut pane := window.pane_get(args.pane_nr) or { window.pane_new()! }
|
|
|
|
if args.reset {
|
|
pane.clear()!
|
|
}
|
|
|
|
// Set environment variables if provided
|
|
for key, value in args.env {
|
|
pane.send_keys('export ${key}="${value}"')!
|
|
}
|
|
|
|
// Execute command if provided
|
|
if args.cmd != '' {
|
|
crun_root := '${self.factory.base_dir}/runtime'
|
|
pane.send_keys('crun --root ${crun_root} exec ${self.name} ${args.cmd}')!
|
|
}
|
|
|
|
self.tmux_pane = pane
|
|
return pane
|
|
}
|
|
|
|
pub fn (mut self Container) node() !&builder.Node {
|
|
// If node already initialized, return it
|
|
if self.node != none {
|
|
return self.node
|
|
}
|
|
|
|
mut b := builder.new()!
|
|
|
|
mut exec := builder.ExecutorCrun{
|
|
container_id: self.name
|
|
crun_root: '${self.factory.base_dir}/runtime'
|
|
debug: false
|
|
}
|
|
|
|
exec.init() or {
|
|
return error('Failed to init ExecutorCrun for container ${self.name}: ${err}')
|
|
}
|
|
|
|
// Create node using the factory method, then override the executor
|
|
mut node := b.node_new(name: 'container_${self.name}', ipaddr: 'localhost')!
|
|
node.executor = exec
|
|
node.platform = .alpine
|
|
node.cputype = .intel
|
|
node.done = map[string]string{}
|
|
node.environment = map[string]string{}
|
|
node.hostname = self.name
|
|
|
|
self.node = node
|
|
return node
|
|
}
|
|
|
|
// Get the crun configuration for this container
|
|
pub fn (self Container) config() !&crun.CrunConfig {
|
|
return self.crun_config or { return error('Container ${self.name} has no crun configuration') }
|
|
}
|
|
|
|
// Container configuration customization methods
|
|
pub fn (mut self Container) set_memory_limit(limit_mb u64) !&Container {
|
|
mut config := self.config()!
|
|
config.set_memory_limit(limit_mb * 1024 * 1024) // Convert MB to bytes
|
|
return &self
|
|
}
|
|
|
|
pub fn (mut self Container) set_cpu_limits(period u64, quota i64, shares u64) !&Container {
|
|
mut config := self.config()!
|
|
config.set_cpu_limits(period, quota, shares)
|
|
return &self
|
|
}
|
|
|
|
pub fn (mut self Container) add_mount(source string, destination string, mount_type crun.MountType, options []crun.MountOption) !&Container {
|
|
mut config := self.config()!
|
|
config.add_mount(source, destination, mount_type, options)
|
|
return &self
|
|
}
|
|
|
|
pub fn (mut self Container) add_capability(cap crun.Capability) !&Container {
|
|
mut config := self.config()!
|
|
config.add_capability(cap)
|
|
return &self
|
|
}
|
|
|
|
pub fn (mut self Container) remove_capability(cap crun.Capability) !&Container {
|
|
mut config := self.config()!
|
|
config.remove_capability(cap)
|
|
return &self
|
|
}
|
|
|
|
pub fn (mut self Container) add_env(key string, value string) !&Container {
|
|
mut config := self.config()!
|
|
config.add_env(key, value)
|
|
return &self
|
|
}
|
|
|
|
pub fn (mut self Container) set_working_dir(dir string) !&Container {
|
|
mut config := self.config()!
|
|
config.set_working_dir(dir)
|
|
return &self
|
|
}
|
|
|
|
// Save the current configuration to disk
|
|
pub fn (self Container) save_config() ! {
|
|
config := self.config()!
|
|
config_path := '${self.factory.base_dir}/configs/${self.name}/config.json'
|
|
config.save_to_file(config_path)!
|
|
}
|