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Copy pathworkspaceagents.go
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1542 lines (1429 loc) · 47.5 KB
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package coderd
import (
"context"
"database/sql"
"encoding/json"
"errors"
"fmt"
"io"
"net"
"net/http"
"net/netip"
"net/url"
"strconv"
"strings"
"time"
"github.com/google/uuid"
"go.opentelemetry.io/otel/trace"
"golang.org/x/mod/semver"
"golang.org/x/oauth2"
"golang.org/x/xerrors"
"nhooyr.io/websocket"
"tailscale.com/tailcfg"
"cdr.dev/slog"
"github.com/coder/coder/agent"
"github.com/coder/coder/coderd/database"
"github.com/coder/coder/coderd/database/dbauthz"
"github.com/coder/coder/coderd/gitauth"
"github.com/coder/coder/coderd/httpapi"
"github.com/coder/coder/coderd/httpmw"
"github.com/coder/coder/coderd/rbac"
"github.com/coder/coder/coderd/tracing"
"github.com/coder/coder/codersdk"
"github.com/coder/coder/codersdk/agentsdk"
"github.com/coder/coder/tailnet"
)
// @Summary Get workspace agent by ID
// @ID get-workspace-agent-by-id
// @Security CoderSessionToken
// @Produce json
// @Tags Agents
// @Param workspaceagent path string true "Workspace agent ID" format(uuid)
// @Success 200 {object} codersdk.WorkspaceAgent
// @Router /workspaceagents/{workspaceagent} [get]
func (api *API) workspaceAgent(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
workspaceAgent := httpmw.WorkspaceAgentParam(r)
workspace := httpmw.WorkspaceParam(r)
if !api.Authorize(r, rbac.ActionRead, workspace) {
httpapi.ResourceNotFound(rw)
return
}
dbApps, err := api.Database.GetWorkspaceAppsByAgentID(ctx, workspaceAgent.ID)
if err != nil && !xerrors.Is(err, sql.ErrNoRows) {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching workspace agent applications.",
Detail: err.Error(),
})
return
}
apiAgent, err := convertWorkspaceAgent(api.DERPMap, *api.TailnetCoordinator.Load(), workspaceAgent, convertApps(dbApps), api.AgentInactiveDisconnectTimeout, api.DeploymentConfig.AgentFallbackTroubleshootingURL.Value)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error reading workspace agent.",
Detail: err.Error(),
})
return
}
httpapi.Write(ctx, rw, http.StatusOK, apiAgent)
}
// @Summary Get authorized workspace agent metadata
// @ID get-authorized-workspace-agent-metadata
// @Security CoderSessionToken
// @Produce json
// @Tags Agents
// @Success 200 {object} agentsdk.Metadata
// @Router /workspaceagents/me/metadata [get]
func (api *API) workspaceAgentMetadata(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
workspaceAgent := httpmw.WorkspaceAgent(r)
apiAgent, err := convertWorkspaceAgent(api.DERPMap, *api.TailnetCoordinator.Load(), workspaceAgent, nil, api.AgentInactiveDisconnectTimeout, api.DeploymentConfig.AgentFallbackTroubleshootingURL.Value)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error reading workspace agent.",
Detail: err.Error(),
})
return
}
dbApps, err := api.Database.GetWorkspaceAppsByAgentID(ctx, workspaceAgent.ID)
if err != nil && !xerrors.Is(err, sql.ErrNoRows) {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching workspace agent applications.",
Detail: err.Error(),
})
return
}
resource, err := api.Database.GetWorkspaceResourceByID(ctx, workspaceAgent.ResourceID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching workspace resource.",
Detail: err.Error(),
})
return
}
build, err := api.Database.GetWorkspaceBuildByJobID(ctx, resource.JobID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching workspace build.",
Detail: err.Error(),
})
return
}
workspace, err := api.Database.GetWorkspaceByID(ctx, build.WorkspaceID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching workspace.",
Detail: err.Error(),
})
return
}
owner, err := api.Database.GetUserByID(ctx, workspace.OwnerID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching workspace owner.",
Detail: err.Error(),
})
return
}
vscodeProxyURI := strings.ReplaceAll(api.AppHostname, "*",
fmt.Sprintf("%s://{{port}}--%s--%s--%s",
api.AccessURL.Scheme,
workspaceAgent.Name,
workspace.Name,
owner.Username,
))
if api.AccessURL.Port() != "" {
vscodeProxyURI += fmt.Sprintf(":%s", api.AccessURL.Port())
}
httpapi.Write(ctx, rw, http.StatusOK, agentsdk.Metadata{
Apps: convertApps(dbApps),
DERPMap: api.DERPMap,
GitAuthConfigs: len(api.GitAuthConfigs),
EnvironmentVariables: apiAgent.EnvironmentVariables,
StartupScript: apiAgent.StartupScript,
Directory: apiAgent.Directory,
VSCodePortProxyURI: vscodeProxyURI,
MOTDFile: workspaceAgent.MOTDFile,
StartupScriptTimeout: time.Duration(apiAgent.StartupScriptTimeoutSeconds) * time.Second,
})
}
// @Summary Submit workspace agent startup
// @ID submit-workspace-agent-startup
// @Security CoderSessionToken
// @Accept json
// @Produce json
// @Tags Agents
// @Param request body agentsdk.PostStartupRequest true "Startup request"
// @Success 200
// @Router /workspaceagents/me/startup [post]
// @x-apidocgen {"skip": true}
func (api *API) postWorkspaceAgentStartup(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
workspaceAgent := httpmw.WorkspaceAgent(r)
apiAgent, err := convertWorkspaceAgent(api.DERPMap, *api.TailnetCoordinator.Load(), workspaceAgent, nil, api.AgentInactiveDisconnectTimeout, api.DeploymentConfig.AgentFallbackTroubleshootingURL.Value)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error reading workspace agent.",
Detail: err.Error(),
})
return
}
var req agentsdk.PostStartupRequest
if !httpapi.Read(ctx, rw, r, &req) {
return
}
api.Logger.Info(ctx, "post workspace agent version", slog.F("agent_id", apiAgent.ID), slog.F("agent_version", req.Version))
if !semver.IsValid(req.Version) {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Invalid workspace agent version provided.",
Detail: fmt.Sprintf("invalid semver version: %q", req.Version),
})
return
}
if err := api.Database.UpdateWorkspaceAgentStartupByID(ctx, database.UpdateWorkspaceAgentStartupByIDParams{
ID: apiAgent.ID,
Version: req.Version,
ExpandedDirectory: req.ExpandedDirectory,
}); err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Error setting agent version",
Detail: err.Error(),
})
return
}
httpapi.Write(ctx, rw, http.StatusOK, nil)
}
// workspaceAgentPTY spawns a PTY and pipes it over a WebSocket.
// This is used for the web terminal.
//
// @Summary Open PTY to workspace agent
// @ID open-pty-to-workspace-agent
// @Security CoderSessionToken
// @Tags Agents
// @Param workspaceagent path string true "Workspace agent ID" format(uuid)
// @Success 101
// @Router /workspaceagents/{workspaceagent}/pty [get]
func (api *API) workspaceAgentPTY(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
api.WebsocketWaitMutex.Lock()
api.WebsocketWaitGroup.Add(1)
api.WebsocketWaitMutex.Unlock()
defer api.WebsocketWaitGroup.Done()
workspaceAgent := httpmw.WorkspaceAgentParam(r)
workspace := httpmw.WorkspaceParam(r)
if !api.Authorize(r, rbac.ActionCreate, workspace.ExecutionRBAC()) {
httpapi.ResourceNotFound(rw)
return
}
apiAgent, err := convertWorkspaceAgent(api.DERPMap, *api.TailnetCoordinator.Load(), workspaceAgent, nil, api.AgentInactiveDisconnectTimeout, api.DeploymentConfig.AgentFallbackTroubleshootingURL.Value)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error reading workspace agent.",
Detail: err.Error(),
})
return
}
if apiAgent.Status != codersdk.WorkspaceAgentConnected {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: fmt.Sprintf("Agent state is %q, it must be in the %q state.", apiAgent.Status, codersdk.WorkspaceAgentConnected),
})
return
}
reconnect, err := uuid.Parse(r.URL.Query().Get("reconnect"))
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Query param 'reconnect' must be a valid UUID.",
Validations: []codersdk.ValidationError{
{Field: "reconnect", Detail: "invalid UUID"},
},
})
return
}
height, err := strconv.ParseUint(r.URL.Query().Get("height"), 10, 16)
if err != nil {
height = 80
}
width, err := strconv.ParseUint(r.URL.Query().Get("width"), 10, 16)
if err != nil {
width = 80
}
conn, err := websocket.Accept(rw, r, &websocket.AcceptOptions{
CompressionMode: websocket.CompressionDisabled,
})
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Failed to accept websocket.",
Detail: err.Error(),
})
return
}
go httpapi.Heartbeat(ctx, conn)
_, wsNetConn := websocketNetConn(ctx, conn, websocket.MessageBinary)
defer wsNetConn.Close() // Also closes conn.
agentConn, release, err := api.workspaceAgentCache.Acquire(r, workspaceAgent.ID)
if err != nil {
_ = conn.Close(websocket.StatusInternalError, httpapi.WebsocketCloseSprintf("dial workspace agent: %s", err))
return
}
defer release()
ptNetConn, err := agentConn.ReconnectingPTY(ctx, reconnect, uint16(height), uint16(width), r.URL.Query().Get("command"))
if err != nil {
_ = conn.Close(websocket.StatusInternalError, httpapi.WebsocketCloseSprintf("dial: %s", err))
return
}
defer ptNetConn.Close()
agent.Bicopy(ctx, wsNetConn, ptNetConn)
}
// @Summary Get listening ports for workspace agent
// @ID get-listening-ports-for-workspace-agent
// @Security CoderSessionToken
// @Produce json
// @Tags Agents
// @Param workspaceagent path string true "Workspace agent ID" format(uuid)
// @Success 200 {object} codersdk.WorkspaceAgentListeningPortsResponse
// @Router /workspaceagents/{workspaceagent}/listening-ports [get]
func (api *API) workspaceAgentListeningPorts(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
workspace := httpmw.WorkspaceParam(r)
workspaceAgent := httpmw.WorkspaceAgentParam(r)
if !api.Authorize(r, rbac.ActionRead, workspace) {
httpapi.ResourceNotFound(rw)
return
}
apiAgent, err := convertWorkspaceAgent(api.DERPMap, *api.TailnetCoordinator.Load(), workspaceAgent, nil, api.AgentInactiveDisconnectTimeout, api.DeploymentConfig.AgentFallbackTroubleshootingURL.Value)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error reading workspace agent.",
Detail: err.Error(),
})
return
}
if apiAgent.Status != codersdk.WorkspaceAgentConnected {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: fmt.Sprintf("Agent state is %q, it must be in the %q state.", apiAgent.Status, codersdk.WorkspaceAgentConnected),
})
return
}
agentConn, release, err := api.workspaceAgentCache.Acquire(r, workspaceAgent.ID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error dialing workspace agent.",
Detail: err.Error(),
})
return
}
defer release()
portsResponse, err := agentConn.ListeningPorts(ctx)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching listening ports.",
Detail: err.Error(),
})
return
}
// Get a list of ports that are in-use by applications.
apps, err := api.Database.GetWorkspaceAppsByAgentID(ctx, workspaceAgent.ID)
if xerrors.Is(err, sql.ErrNoRows) {
apps = []database.WorkspaceApp{}
err = nil
}
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching workspace apps.",
Detail: err.Error(),
})
return
}
appPorts := make(map[uint16]struct{}, len(apps))
for _, app := range apps {
if !app.Url.Valid || app.Url.String == "" {
continue
}
u, err := url.Parse(app.Url.String)
if err != nil {
continue
}
port := u.Port()
if port == "" {
continue
}
portNum, err := strconv.ParseUint(port, 10, 16)
if err != nil {
continue
}
if portNum < 1 || portNum > 65535 {
continue
}
appPorts[uint16(portNum)] = struct{}{}
}
// Filter out ports that are globally blocked, in-use by applications, or
// common non-HTTP ports such as databases, FTP, SSH, etc.
filteredPorts := make([]codersdk.WorkspaceAgentListeningPort, 0, len(portsResponse.Ports))
for _, port := range portsResponse.Ports {
if port.Port < codersdk.WorkspaceAgentMinimumListeningPort {
continue
}
if _, ok := appPorts[port.Port]; ok {
continue
}
if _, ok := codersdk.WorkspaceAgentIgnoredListeningPorts[port.Port]; ok {
continue
}
filteredPorts = append(filteredPorts, port)
}
portsResponse.Ports = filteredPorts
httpapi.Write(ctx, rw, http.StatusOK, portsResponse)
}
func (api *API) dialWorkspaceAgentTailnet(r *http.Request, agentID uuid.UUID) (*codersdk.WorkspaceAgentConn, error) {
ctx := r.Context()
clientConn, serverConn := net.Pipe()
derpMap := api.DERPMap.Clone()
for _, region := range derpMap.Regions {
if !region.EmbeddedRelay {
continue
}
var node *tailcfg.DERPNode
for _, n := range region.Nodes {
if n.STUNOnly {
continue
}
node = n
break
}
if node == nil {
continue
}
// TODO: This should dial directly to execute the
// DERP server instead of contacting localhost.
//
// This requires modification of Tailscale internals
// to pipe through a proxy function per-region, so
// this is an easy and mostly reliable hack for now.
cloned := node.Clone()
// Add p for proxy.
// This first node supports TLS.
cloned.Name += "p"
cloned.IPv4 = "127.0.0.1"
cloned.InsecureForTests = true
region.Nodes = append(region.Nodes, cloned.Clone())
// This second node forces HTTP.
cloned.Name += "-http"
cloned.ForceHTTP = true
region.Nodes = append(region.Nodes, cloned)
}
conn, err := tailnet.NewConn(&tailnet.Options{
Addresses: []netip.Prefix{netip.PrefixFrom(tailnet.IP(), 128)},
DERPMap: derpMap,
Logger: api.Logger.Named("tailnet"),
})
if err != nil {
_ = clientConn.Close()
_ = serverConn.Close()
return nil, xerrors.Errorf("create tailnet conn: %w", err)
}
sendNodes, _ := tailnet.ServeCoordinator(clientConn, func(node []*tailnet.Node) error {
err = conn.UpdateNodes(node, true)
if err != nil {
return xerrors.Errorf("update nodes: %w", err)
}
return nil
})
conn.SetNodeCallback(sendNodes)
agentConn := &codersdk.WorkspaceAgentConn{
Conn: conn,
CloseFunc: func() {
_ = clientConn.Close()
_ = serverConn.Close()
},
}
go func() {
err := (*api.TailnetCoordinator.Load()).ServeClient(serverConn, uuid.New(), agentID)
if err != nil {
api.Logger.Warn(r.Context(), "tailnet coordinator client error", slog.Error(err))
_ = agentConn.Close()
}
}()
if !agentConn.AwaitReachable(ctx) {
_ = agentConn.Close()
return nil, xerrors.Errorf("agent not reachable")
}
return agentConn, nil
}
// @Summary Get connection info for workspace agent
// @ID get-connection-info-for-workspace-agent
// @Security CoderSessionToken
// @Produce json
// @Tags Agents
// @Param workspaceagent path string true "Workspace agent ID" format(uuid)
// @Success 200 {object} codersdk.WorkspaceAgentConnectionInfo
// @Router /workspaceagents/{workspaceagent}/connection [get]
func (api *API) workspaceAgentConnection(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
workspace := httpmw.WorkspaceParam(r)
if !api.Authorize(r, rbac.ActionRead, workspace) {
httpapi.ResourceNotFound(rw)
return
}
httpapi.Write(ctx, rw, http.StatusOK, codersdk.WorkspaceAgentConnectionInfo{
DERPMap: api.DERPMap,
})
}
// @Summary Coordinate workspace agent via Tailnet
// @Description It accepts a WebSocket connection to an agent that listens to
// @Description incoming connections and publishes node updates.
// @ID coordinate-workspace-agent-via-tailnet
// @Security CoderSessionToken
// @Tags Agents
// @Success 101
// @Router /workspaceagents/me/coordinate [get]
func (api *API) workspaceAgentCoordinate(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
api.WebsocketWaitMutex.Lock()
api.WebsocketWaitGroup.Add(1)
api.WebsocketWaitMutex.Unlock()
defer api.WebsocketWaitGroup.Done()
workspaceAgent := httpmw.WorkspaceAgent(r)
resource, err := api.Database.GetWorkspaceResourceByID(ctx, workspaceAgent.ResourceID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Failed to accept websocket.",
Detail: err.Error(),
})
return
}
build, err := api.Database.GetWorkspaceBuildByJobID(ctx, resource.JobID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Internal error fetching workspace build job.",
Detail: err.Error(),
})
return
}
workspace, err := api.Database.GetWorkspaceByID(ctx, build.WorkspaceID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Internal error fetching workspace.",
Detail: err.Error(),
})
return
}
owner, err := api.Database.GetUserByID(ctx, workspace.OwnerID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Internal error fetching user.",
Detail: err.Error(),
})
return
}
// Ensure the resource is still valid!
// We only accept agents for resources on the latest build.
ensureLatestBuild := func() error {
latestBuild, err := api.Database.GetLatestWorkspaceBuildByWorkspaceID(ctx, build.WorkspaceID)
if err != nil {
return err
}
if build.ID != latestBuild.ID {
return xerrors.New("build is outdated")
}
return nil
}
err = ensureLatestBuild()
if err != nil {
api.Logger.Debug(ctx, "agent tried to connect from non-latest built",
slog.F("resource", resource),
slog.F("agent", workspaceAgent),
)
httpapi.Write(ctx, rw, http.StatusForbidden, codersdk.Response{
Message: "Agent trying to connect from non-latest build.",
Detail: err.Error(),
})
return
}
conn, err := websocket.Accept(rw, r, nil)
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Failed to accept websocket.",
Detail: err.Error(),
})
return
}
go httpapi.Heartbeat(ctx, conn)
ctx, wsNetConn := websocketNetConn(ctx, conn, websocket.MessageBinary)
defer wsNetConn.Close()
firstConnectedAt := workspaceAgent.FirstConnectedAt
if !firstConnectedAt.Valid {
firstConnectedAt = sql.NullTime{
Time: database.Now(),
Valid: true,
}
}
lastConnectedAt := sql.NullTime{
Time: database.Now(),
Valid: true,
}
disconnectedAt := workspaceAgent.DisconnectedAt
updateConnectionTimes := func(ctx context.Context) error {
err = api.Database.UpdateWorkspaceAgentConnectionByID(ctx, database.UpdateWorkspaceAgentConnectionByIDParams{
ID: workspaceAgent.ID,
FirstConnectedAt: firstConnectedAt,
LastConnectedAt: lastConnectedAt,
DisconnectedAt: disconnectedAt,
UpdatedAt: database.Now(),
LastConnectedReplicaID: uuid.NullUUID{
UUID: api.ID,
Valid: true,
},
})
if err != nil {
return err
}
return nil
}
defer func() {
// If connection closed then context will be canceled, try to
// ensure our final update is sent. By waiting at most the agent
// inactive disconnect timeout we ensure that we don't block but
// also guarantee that the agent will be considered disconnected
// by normal status check.
//
// Use a system context as the agent has disconnected and that token
// may no longer be valid.
//nolint:gocritic
ctx, cancel := context.WithTimeout(dbauthz.AsSystemRestricted(api.ctx), api.AgentInactiveDisconnectTimeout)
defer cancel()
disconnectedAt = sql.NullTime{
Time: database.Now(),
Valid: true,
}
err := updateConnectionTimes(ctx)
if err != nil {
// This is a bug with unit tests that cancel the app context and
// cause this error log to be generated. We should fix the unit tests
// as this is a valid log.
//
// The pq error occurs when the server is shutting down.
if !xerrors.Is(err, context.Canceled) && !database.IsQueryCanceledError(err) {
api.Logger.Error(ctx, "failed to update agent disconnect time",
slog.Error(err),
slog.F("workspace", build.WorkspaceID),
)
}
}
api.publishWorkspaceUpdate(ctx, build.WorkspaceID)
}()
err = updateConnectionTimes(ctx)
if err != nil {
_ = conn.Close(websocket.StatusGoingAway, err.Error())
return
}
api.publishWorkspaceUpdate(ctx, build.WorkspaceID)
// End span so we don't get long lived trace data.
tracing.EndHTTPSpan(r, http.StatusOK, trace.SpanFromContext(ctx))
// Ignore all trace spans after this.
ctx = trace.ContextWithSpan(ctx, tracing.NoopSpan)
api.Logger.Info(ctx, "accepting agent", slog.F("agent", workspaceAgent))
defer conn.Close(websocket.StatusNormalClosure, "")
closeChan := make(chan struct{})
go func() {
defer close(closeChan)
err := (*api.TailnetCoordinator.Load()).ServeAgent(wsNetConn, workspaceAgent.ID,
fmt.Sprintf("%s-%s-%s", owner.Username, workspace.Name, workspaceAgent.Name),
)
if err != nil {
api.Logger.Warn(ctx, "tailnet coordinator agent error", slog.Error(err))
_ = conn.Close(websocket.StatusInternalError, err.Error())
return
}
}()
ticker := time.NewTicker(api.AgentConnectionUpdateFrequency)
defer ticker.Stop()
for {
select {
case <-closeChan:
return
case <-ticker.C:
}
lastConnectedAt = sql.NullTime{
Time: database.Now(),
Valid: true,
}
err = updateConnectionTimes(ctx)
if err != nil {
_ = conn.Close(websocket.StatusGoingAway, err.Error())
return
}
err := ensureLatestBuild()
if err != nil {
// Disconnect agents that are no longer valid.
_ = conn.Close(websocket.StatusGoingAway, "")
return
}
}
}
// workspaceAgentClientCoordinate accepts a WebSocket that reads node network updates.
// After accept a PubSub starts listening for new connection node updates
// which are written to the WebSocket.
//
// @Summary Coordinate workspace agent
// @ID coordinate-workspace-agent
// @Security CoderSessionToken
// @Tags Agents
// @Param workspaceagent path string true "Workspace agent ID" format(uuid)
// @Success 101
// @Router /workspaceagents/{workspaceagent}/coordinate [get]
func (api *API) workspaceAgentClientCoordinate(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
workspace := httpmw.WorkspaceParam(r)
if !api.Authorize(r, rbac.ActionCreate, workspace.ExecutionRBAC()) {
httpapi.ResourceNotFound(rw)
return
}
// This is used by Enterprise code to control the functionality of this route.
override := api.WorkspaceClientCoordinateOverride.Load()
if override != nil {
overrideFunc := *override
if overrideFunc != nil && overrideFunc(rw) {
return
}
}
api.WebsocketWaitMutex.Lock()
api.WebsocketWaitGroup.Add(1)
api.WebsocketWaitMutex.Unlock()
defer api.WebsocketWaitGroup.Done()
workspaceAgent := httpmw.WorkspaceAgentParam(r)
conn, err := websocket.Accept(rw, r, nil)
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Failed to accept websocket.",
Detail: err.Error(),
})
return
}
ctx, wsNetConn := websocketNetConn(ctx, conn, websocket.MessageBinary)
defer wsNetConn.Close()
go httpapi.Heartbeat(ctx, conn)
defer conn.Close(websocket.StatusNormalClosure, "")
err = (*api.TailnetCoordinator.Load()).ServeClient(wsNetConn, uuid.New(), workspaceAgent.ID)
if err != nil {
_ = conn.Close(websocket.StatusInternalError, err.Error())
return
}
}
func convertApps(dbApps []database.WorkspaceApp) []codersdk.WorkspaceApp {
apps := make([]codersdk.WorkspaceApp, 0)
for _, dbApp := range dbApps {
apps = append(apps, codersdk.WorkspaceApp{
ID: dbApp.ID,
URL: dbApp.Url.String,
External: dbApp.External,
Slug: dbApp.Slug,
DisplayName: dbApp.DisplayName,
Command: dbApp.Command.String,
Icon: dbApp.Icon,
Subdomain: dbApp.Subdomain,
SharingLevel: codersdk.WorkspaceAppSharingLevel(dbApp.SharingLevel),
Healthcheck: codersdk.Healthcheck{
URL: dbApp.HealthcheckUrl,
Interval: dbApp.HealthcheckInterval,
Threshold: dbApp.HealthcheckThreshold,
},
Health: codersdk.WorkspaceAppHealth(dbApp.Health),
})
}
return apps
}
func convertWorkspaceAgent(derpMap *tailcfg.DERPMap, coordinator tailnet.Coordinator, dbAgent database.WorkspaceAgent, apps []codersdk.WorkspaceApp, agentInactiveDisconnectTimeout time.Duration, agentFallbackTroubleshootingURL string) (codersdk.WorkspaceAgent, error) {
var envs map[string]string
if dbAgent.EnvironmentVariables.Valid {
err := json.Unmarshal(dbAgent.EnvironmentVariables.RawMessage, &envs)
if err != nil {
return codersdk.WorkspaceAgent{}, xerrors.Errorf("unmarshal env vars: %w", err)
}
}
troubleshootingURL := agentFallbackTroubleshootingURL
if dbAgent.TroubleshootingURL != "" {
troubleshootingURL = dbAgent.TroubleshootingURL
}
workspaceAgent := codersdk.WorkspaceAgent{
ID: dbAgent.ID,
CreatedAt: dbAgent.CreatedAt,
UpdatedAt: dbAgent.UpdatedAt,
ResourceID: dbAgent.ResourceID,
InstanceID: dbAgent.AuthInstanceID.String,
Name: dbAgent.Name,
Architecture: dbAgent.Architecture,
OperatingSystem: dbAgent.OperatingSystem,
StartupScript: dbAgent.StartupScript.String,
Version: dbAgent.Version,
EnvironmentVariables: envs,
Directory: dbAgent.Directory,
ExpandedDirectory: dbAgent.ExpandedDirectory,
Apps: apps,
ConnectionTimeoutSeconds: dbAgent.ConnectionTimeoutSeconds,
TroubleshootingURL: troubleshootingURL,
LifecycleState: codersdk.WorkspaceAgentLifecycle(dbAgent.LifecycleState),
LoginBeforeReady: dbAgent.LoginBeforeReady,
StartupScriptTimeoutSeconds: dbAgent.StartupScriptTimeoutSeconds,
}
node := coordinator.Node(dbAgent.ID)
if node != nil {
workspaceAgent.DERPLatency = map[string]codersdk.DERPRegion{}
for rawRegion, latency := range node.DERPLatency {
regionParts := strings.SplitN(rawRegion, "-", 2)
regionID, err := strconv.Atoi(regionParts[0])
if err != nil {
return codersdk.WorkspaceAgent{}, xerrors.Errorf("convert derp region id %q: %w", rawRegion, err)
}
region, found := derpMap.Regions[regionID]
if !found {
// It's possible that a workspace agent is using an old DERPMap
// and reports regions that do not exist. If that's the case,
// report the region as unknown!
region = &tailcfg.DERPRegion{
RegionID: regionID,
RegionName: fmt.Sprintf("Unnamed %d", regionID),
}
}
workspaceAgent.DERPLatency[region.RegionName] = codersdk.DERPRegion{
Preferred: node.PreferredDERP == regionID,
LatencyMilliseconds: latency * 1000,
}
}
}
if dbAgent.FirstConnectedAt.Valid {
workspaceAgent.FirstConnectedAt = &dbAgent.FirstConnectedAt.Time
}
if dbAgent.LastConnectedAt.Valid {
workspaceAgent.LastConnectedAt = &dbAgent.LastConnectedAt.Time
}
if dbAgent.DisconnectedAt.Valid {
workspaceAgent.DisconnectedAt = &dbAgent.DisconnectedAt.Time
}
connectionTimeout := time.Duration(dbAgent.ConnectionTimeoutSeconds) * time.Second
switch {
case !dbAgent.FirstConnectedAt.Valid:
switch {
case connectionTimeout > 0 && database.Now().Sub(dbAgent.CreatedAt) > connectionTimeout:
// If the agent took too long to connect the first time,
// mark it as timed out.
workspaceAgent.Status = codersdk.WorkspaceAgentTimeout
default:
// If the agent never connected, it's waiting for the compute
// to start up.
workspaceAgent.Status = codersdk.WorkspaceAgentConnecting
}
case dbAgent.DisconnectedAt.Time.After(dbAgent.LastConnectedAt.Time):
// If we've disconnected after our last connection, we know the
// agent is no longer connected.
workspaceAgent.Status = codersdk.WorkspaceAgentDisconnected
case database.Now().Sub(dbAgent.LastConnectedAt.Time) > agentInactiveDisconnectTimeout:
// The connection died without updating the last connected.
workspaceAgent.Status = codersdk.WorkspaceAgentDisconnected
// Client code needs an accurate disconnected at if the agent has been inactive.
workspaceAgent.DisconnectedAt = &dbAgent.LastConnectedAt.Time
case dbAgent.LastConnectedAt.Valid:
// The agent should be assumed connected if it's under inactivity timeouts
// and last connected at has been properly set.
workspaceAgent.Status = codersdk.WorkspaceAgentConnected
}
return workspaceAgent, nil
}
// @Summary Submit workspace agent stats
// @ID submit-workspace-agent-stats
// @Security CoderSessionToken
// @Accept json
// @Produce json
// @Tags Agents
// @Param request body agentsdk.Stats true "Stats request"
// @Success 200 {object} agentsdk.StatsResponse
// @Router /workspaceagents/me/report-stats [post]
func (api *API) workspaceAgentReportStats(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
workspaceAgent := httpmw.WorkspaceAgent(r)
workspace, err := api.Database.GetWorkspaceByAgentID(ctx, workspaceAgent.ID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Failed to get workspace.",
Detail: err.Error(),
})
return
}
var req agentsdk.Stats
if !httpapi.Read(ctx, rw, r, &req) {
return
}
if req.RxBytes == 0 && req.TxBytes == 0 {
httpapi.Write(ctx, rw, http.StatusOK, agentsdk.StatsResponse{
ReportInterval: api.AgentStatsRefreshInterval,
})
return
}
api.Logger.Debug(ctx, "read stats report",
slog.F("interval", api.AgentStatsRefreshInterval),
slog.F("agent", workspaceAgent.ID),
slog.F("workspace", workspace.ID),
slog.F("payload", req),
)
activityBumpWorkspace(ctx, api.Logger.Named("activity_bump"), api.Database, workspace.ID)
payload, err := json.Marshal(req.ConnectionsByProto)
if err != nil {
api.Logger.Error(ctx, "marshal agent connections by proto", slog.F("workspace_agent", workspaceAgent.ID), slog.Error(err))
payload = json.RawMessage("{}")
}
now := database.Now()
_, err = api.Database.InsertWorkspaceAgentStat(ctx, database.InsertWorkspaceAgentStatParams{
ID: uuid.New(),
CreatedAt: now,
AgentID: workspaceAgent.ID,
WorkspaceID: workspace.ID,
UserID: workspace.OwnerID,
TemplateID: workspace.TemplateID,
ConnectionsByProto: payload,
ConnectionCount: req.ConnectionCount,
RxPackets: req.RxPackets,
RxBytes: req.RxBytes,
TxPackets: req.TxPackets,
TxBytes: req.TxBytes,
})
if err != nil {
httpapi.InternalServerError(rw, err)
return
}
err = api.Database.UpdateWorkspaceLastUsedAt(ctx, database.UpdateWorkspaceLastUsedAtParams{
ID: workspace.ID,
LastUsedAt: now,
})
if err != nil {
httpapi.InternalServerError(rw, err)
return
}
httpapi.Write(ctx, rw, http.StatusOK, agentsdk.StatsResponse{
ReportInterval: api.AgentStatsRefreshInterval,
})
}
// @Summary Submit workspace agent lifecycle state
// @ID submit-workspace-agent-lifecycle-state
// @Security CoderSessionToken
// @Accept json
// @Tags Agents
// @Param request body agentsdk.PostLifecycleRequest true "Workspace agent lifecycle request"
// @Success 204 "Success"
// @Router /workspaceagents/me/report-lifecycle [post]
// @x-apidocgen {"skip": true}
func (api *API) workspaceAgentReportLifecycle(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
workspaceAgent := httpmw.WorkspaceAgent(r)
workspace, err := api.Database.GetWorkspaceByAgentID(ctx, workspaceAgent.ID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Failed to get workspace.",
Detail: err.Error(),
})
return
}
var req agentsdk.PostLifecycleRequest
if !httpapi.Read(ctx, rw, r, &req) {
return
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