pptx704
7753938044
Implements Phase 1: boot a Firecracker microVM, execute a command inside it via envd, and get the output back. Uses raw Firecracker HTTP API via Unix socket (not the Go SDK) for full control over the VM lifecycle. - internal/vm: VM manager with create/pause/resume/destroy, Firecracker HTTP client, process launcher with unshare + ip netns exec isolation - internal/network: per-sandbox network namespace with veth pair, TAP device, NAT rules, and IP forwarding - internal/envdclient: Connect RPC client for envd process/filesystem services with health check retry - cmd/host-agent: demo binary that boots a VM, runs "echo hello", prints output, and cleans up - proto/envd: canonical proto files with buf + protoc-gen-connect-go code generation - images/wrenn-init.sh: minimal PID 1 init script for guest VMs - CLAUDE.md: updated architecture to reflect TAP networking (not vsock) and Firecracker HTTP API (not Go SDK)
22 lines
553 B
Go
22 lines
553 B
Go
package envdclient
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import (
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"fmt"
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"net/http"
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)
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// envdPort is the default port envd listens on inside the guest.
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const envdPort = 49983
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// baseURL returns the HTTP base URL for reaching envd at the given host IP.
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func baseURL(hostIP string) string {
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return fmt.Sprintf("http://%s:%d", hostIP, envdPort)
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}
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// newHTTPClient returns an http.Client suitable for talking to envd.
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// No special transport is needed — envd is reachable via the host IP
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// through the veth/TAP network path.
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func newHTTPClient() *http.Client {
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return &http.Client{}
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}
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