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Copy pathworkspaceagents.go
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2352 lines (2143 loc) · 72 KB
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package coderd
import (
"bufio"
"context"
"database/sql"
"encoding/json"
"errors"
"fmt"
"io"
"net"
"net/http"
"net/netip"
"net/url"
"runtime/pprof"
"sort"
"strconv"
"strings"
"sync"
"sync/atomic"
"time"
"github.com/go-chi/chi/v5"
"github.com/google/uuid"
"golang.org/x/exp/maps"
"golang.org/x/exp/slices"
"golang.org/x/mod/semver"
"golang.org/x/sync/errgroup"
"golang.org/x/xerrors"
"nhooyr.io/websocket"
"tailscale.com/tailcfg"
"cdr.dev/slog"
"github.com/coder/coder/v2/coderd/database"
"github.com/coder/coder/v2/coderd/database/dbauthz"
"github.com/coder/coder/v2/coderd/database/dbtime"
"github.com/coder/coder/v2/coderd/gitauth"
"github.com/coder/coder/v2/coderd/httpapi"
"github.com/coder/coder/v2/coderd/httpmw"
"github.com/coder/coder/v2/coderd/rbac"
"github.com/coder/coder/v2/coderd/util/ptr"
"github.com/coder/coder/v2/codersdk"
"github.com/coder/coder/v2/codersdk/agentsdk"
"github.com/coder/coder/v2/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)
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
}
apiAgent, err := convertWorkspaceAgent(
api.DERPMap(), *api.TailnetCoordinator.Load(), workspaceAgent, convertApps(dbApps, workspaceAgent, owner, workspace), api.AgentInactiveDisconnectTimeout,
api.DeploymentValues.AgentFallbackTroubleshootingURL.String(),
)
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 manifest
// @ID get-authorized-workspace-agent-manifest
// @Security CoderSessionToken
// @Produce json
// @Tags Agents
// @Success 200 {object} agentsdk.Manifest
// @Router /workspaceagents/me/manifest [get]
func (api *API) workspaceAgentManifest(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.DeploymentValues.AgentFallbackTroubleshootingURL.String(),
)
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
}
metadata, err := api.Database.GetWorkspaceAgentMetadata(ctx, workspaceAgent.ID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching workspace agent metadata.",
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
}
appHost := httpapi.ApplicationURL{
AppSlugOrPort: "{{port}}",
AgentName: workspaceAgent.Name,
WorkspaceName: workspace.Name,
Username: owner.Username,
}
vscodeProxyURI := api.AccessURL.Scheme + "://" + strings.ReplaceAll(api.AppHostname, "*", appHost.String())
if api.AccessURL.Port() != "" {
vscodeProxyURI += fmt.Sprintf(":%s", api.AccessURL.Port())
}
httpapi.Write(ctx, rw, http.StatusOK, agentsdk.Manifest{
AgentID: apiAgent.ID,
Apps: convertApps(dbApps, workspaceAgent, owner, workspace),
DERPMap: api.DERPMap(),
DERPForceWebSockets: api.DeploymentValues.DERP.Config.ForceWebSockets.Value(),
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,
ShutdownScript: apiAgent.ShutdownScript,
ShutdownScriptTimeout: time.Duration(apiAgent.ShutdownScriptTimeoutSeconds) * time.Second,
DisableDirectConnections: api.DeploymentValues.DERP.Config.BlockDirect.Value(),
Metadata: convertWorkspaceAgentMetadataDesc(metadata),
})
}
// @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.DeploymentValues.AgentFallbackTroubleshootingURL.String(),
)
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.Debug(
ctx,
"post workspace agent version",
slog.F("agent_id", apiAgent.ID),
slog.F("agent_version", req.Version),
slog.F("remote_addr", r.RemoteAddr),
)
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
}
// Validate subsystems.
seen := make(map[codersdk.AgentSubsystem]bool)
for _, s := range req.Subsystems {
if !s.Valid() {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Invalid workspace agent subsystem provided.",
Detail: fmt.Sprintf("invalid subsystem: %q", s),
})
return
}
if seen[s] {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Invalid workspace agent subsystem provided.",
Detail: fmt.Sprintf("duplicate subsystem: %q", s),
})
return
}
seen[s] = true
}
if err := api.Database.UpdateWorkspaceAgentStartupByID(ctx, database.UpdateWorkspaceAgentStartupByIDParams{
ID: apiAgent.ID,
Version: req.Version,
ExpandedDirectory: req.ExpandedDirectory,
Subsystems: convertWorkspaceAgentSubsystems(req.Subsystems),
}); 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)
}
// @Summary Patch workspace agent logs
// @ID patch-workspace-agent-logs
// @Security CoderSessionToken
// @Accept json
// @Produce json
// @Tags Agents
// @Param request body agentsdk.PatchLogs true "logs"
// @Success 200 {object} codersdk.Response
// @Router /workspaceagents/me/logs [patch]
func (api *API) patchWorkspaceAgentLogs(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
workspaceAgent := httpmw.WorkspaceAgent(r)
var req agentsdk.PatchLogs
if !httpapi.Read(ctx, rw, r, &req) {
return
}
if len(req.Logs) == 0 {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "No logs provided.",
})
return
}
createdAt := make([]time.Time, 0)
output := make([]string, 0)
level := make([]database.LogLevel, 0)
source := make([]database.WorkspaceAgentLogSource, 0)
outputLength := 0
for _, logEntry := range req.Logs {
createdAt = append(createdAt, logEntry.CreatedAt)
output = append(output, logEntry.Output)
outputLength += len(logEntry.Output)
if logEntry.Level == "" {
// Default to "info" to support older agents that didn't have the level field.
logEntry.Level = codersdk.LogLevelInfo
}
parsedLevel := database.LogLevel(logEntry.Level)
if !parsedLevel.Valid() {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Invalid log level provided.",
Detail: fmt.Sprintf("invalid log level: %q", logEntry.Level),
})
return
}
level = append(level, parsedLevel)
if logEntry.Source == "" {
// Default to "startup_script" to support older agents that didn't have the source field.
logEntry.Source = codersdk.WorkspaceAgentLogSourceStartupScript
}
parsedSource := database.WorkspaceAgentLogSource(logEntry.Source)
if !parsedSource.Valid() {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Invalid log source provided.",
Detail: fmt.Sprintf("invalid log source: %q", logEntry.Source),
})
return
}
source = append(source, parsedSource)
}
logs, err := api.Database.InsertWorkspaceAgentLogs(ctx, database.InsertWorkspaceAgentLogsParams{
AgentID: workspaceAgent.ID,
CreatedAt: createdAt,
Output: output,
Level: level,
Source: source,
OutputLength: int32(outputLength),
})
if err != nil {
if !database.IsWorkspaceAgentLogsLimitError(err) {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Failed to upload logs",
Detail: err.Error(),
})
return
}
if workspaceAgent.LogsOverflowed {
httpapi.Write(ctx, rw, http.StatusRequestEntityTooLarge, codersdk.Response{
Message: "Logs limit exceeded",
Detail: err.Error(),
})
return
}
err := api.Database.UpdateWorkspaceAgentLogOverflowByID(ctx, database.UpdateWorkspaceAgentLogOverflowByIDParams{
ID: workspaceAgent.ID,
LogsOverflowed: true,
})
if err != nil {
// We don't want to return here, because the agent will retry
// on failure and this isn't a huge deal. The overflow state
// is just a hint to the user that the logs are incomplete.
api.Logger.Warn(ctx, "failed to update workspace agent log overflow", slog.Error(err))
}
resource, err := api.Database.GetWorkspaceResourceByID(ctx, workspaceAgent.ResourceID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Failed to get workspace resource.",
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
}
api.publishWorkspaceUpdate(ctx, build.WorkspaceID)
httpapi.Write(ctx, rw, http.StatusRequestEntityTooLarge, codersdk.Response{
Message: "Logs limit exceeded",
})
return
}
lowestLogID := logs[0].ID
// Publish by the lowest log ID inserted so the
// log stream will fetch everything from that point.
api.publishWorkspaceAgentLogsUpdate(ctx, workspaceAgent.ID, agentsdk.LogsNotifyMessage{
CreatedAfter: lowestLogID - 1,
})
if workspaceAgent.LogsLength == 0 {
// If these are the first logs being appended, we publish a UI update
// to notify the UI that logs are now available.
resource, err := api.Database.GetWorkspaceResourceByID(ctx, workspaceAgent.ResourceID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Failed to get workspace resource.",
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
}
api.publishWorkspaceUpdate(ctx, build.WorkspaceID)
}
httpapi.Write(ctx, rw, http.StatusOK, nil)
}
// workspaceAgentLogs returns the logs associated with a workspace agent
//
// @Summary Get logs by workspace agent
// @ID get-logs-by-workspace-agent
// @Security CoderSessionToken
// @Produce json
// @Tags Agents
// @Param workspaceagent path string true "Workspace agent ID" format(uuid)
// @Param before query int false "Before log id"
// @Param after query int false "After log id"
// @Param follow query bool false "Follow log stream"
// @Param no_compression query bool false "Disable compression for WebSocket connection"
// @Success 200 {array} codersdk.WorkspaceAgentLog
// @Router /workspaceagents/{workspaceagent}/logs [get]
func (api *API) workspaceAgentLogs(rw http.ResponseWriter, r *http.Request) {
// This mostly copies how provisioner job logs are streamed!
var (
ctx = r.Context()
workspaceAgent = httpmw.WorkspaceAgentParam(r)
logger = api.Logger.With(slog.F("workspace_agent_id", workspaceAgent.ID))
follow = r.URL.Query().Has("follow")
afterRaw = r.URL.Query().Get("after")
noCompression = r.URL.Query().Has("no_compression")
)
var after int64
// Only fetch logs created after the time provided.
if afterRaw != "" {
var err error
after, err = strconv.ParseInt(afterRaw, 10, 64)
if err != nil || after < 0 {
httpapi.Write(ctx, rw, http.StatusBadRequest, codersdk.Response{
Message: "Query param \"after\" must be an integer greater than or equal to zero.",
Validations: []codersdk.ValidationError{
{Field: "after", Detail: "Must be an integer greater than or equal to zero"},
},
})
return
}
}
logs, err := api.Database.GetWorkspaceAgentLogsAfter(ctx, database.GetWorkspaceAgentLogsAfterParams{
AgentID: workspaceAgent.ID,
CreatedAfter: after,
})
if errors.Is(err, sql.ErrNoRows) {
err = nil
}
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching provisioner logs.",
Detail: err.Error(),
})
return
}
if logs == nil {
logs = []database.WorkspaceAgentLog{}
}
if !follow {
httpapi.Write(ctx, rw, http.StatusOK, convertWorkspaceAgentLogs(logs))
return
}
workspace, err := api.Database.GetWorkspaceByAgentID(ctx, workspaceAgent.ID)
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Internal error fetching workspace by agent id.",
Detail: err.Error(),
})
return
}
api.WebsocketWaitMutex.Lock()
api.WebsocketWaitGroup.Add(1)
api.WebsocketWaitMutex.Unlock()
defer api.WebsocketWaitGroup.Done()
opts := &websocket.AcceptOptions{}
// Allow client to request no compression. This is useful for buggy
// clients or if there's a client/server incompatibility. This is
// needed with e.g. nhooyr/websocket and Safari (confirmed in 16.5).
//
// See:
// * https://github.com/nhooyr/websocket/issues/218
// * https://github.com/gobwas/ws/issues/169
if noCompression {
opts.CompressionMode = websocket.CompressionDisabled
}
conn, err := websocket.Accept(rw, r, opts)
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.MessageText)
defer wsNetConn.Close() // Also closes conn.
// The Go stdlib JSON encoder appends a newline character after message write.
encoder := json.NewEncoder(wsNetConn)
err = encoder.Encode(convertWorkspaceAgentLogs(logs))
if err != nil {
return
}
lastSentLogID := after
if len(logs) > 0 {
lastSentLogID = logs[len(logs)-1].ID
}
workspaceNotifyCh := make(chan struct{}, 1)
notifyCh := make(chan struct{}, 1)
// Allow us to immediately check if we missed any logs
// between initial fetch and subscribe.
notifyCh <- struct{}{}
// Subscribe to workspace to detect new builds.
closeSubscribeWorkspace, err := api.Pubsub.Subscribe(codersdk.WorkspaceNotifyChannel(workspace.ID), func(_ context.Context, _ []byte) {
select {
case workspaceNotifyCh <- struct{}{}:
default:
}
})
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Failed to subscribe to workspace for log streaming.",
Detail: err.Error(),
})
return
}
defer closeSubscribeWorkspace()
// Subscribe early to prevent missing log events.
closeSubscribe, err := api.Pubsub.Subscribe(agentsdk.LogsNotifyChannel(workspaceAgent.ID), func(_ context.Context, _ []byte) {
// The message is not important, we're tracking lastSentLogID manually.
select {
case notifyCh <- struct{}{}:
default:
}
})
if err != nil {
httpapi.Write(ctx, rw, http.StatusInternalServerError, codersdk.Response{
Message: "Failed to subscribe to agent for log streaming.",
Detail: err.Error(),
})
return
}
defer closeSubscribe()
// Buffer size controls the log prefetch capacity.
bufferedLogs := make(chan []database.WorkspaceAgentLog, 8)
// Check at least once per minute in case we didn't receive a pubsub message.
recheckInterval := time.Minute
t := time.NewTicker(recheckInterval)
defer t.Stop()
go func() {
defer func() {
logger.Debug(ctx, "end log streaming loop")
close(bufferedLogs)
}()
logger.Debug(ctx, "start log streaming loop", slog.F("last_sent_log_id", lastSentLogID))
keepGoing := true
for keepGoing {
var (
debugTriggeredBy string
onlyCheckLatestBuild bool
)
select {
case <-ctx.Done():
return
case <-t.C:
debugTriggeredBy = "timer"
case <-workspaceNotifyCh:
debugTriggeredBy = "workspace"
onlyCheckLatestBuild = true
case <-notifyCh:
debugTriggeredBy = "log"
t.Reset(recheckInterval)
}
agents, err := api.Database.GetWorkspaceAgentsInLatestBuildByWorkspaceID(ctx, workspace.ID)
if err != nil && !xerrors.Is(err, sql.ErrNoRows) {
if xerrors.Is(err, context.Canceled) {
return
}
logger.Warn(ctx, "failed to get workspace agents in latest build", slog.Error(err))
continue
}
// If the agent is no longer in the latest build, we can stop after
// checking once.
keepGoing = slices.ContainsFunc(agents, func(agent database.WorkspaceAgent) bool { return agent.ID == workspaceAgent.ID })
logger.Debug(
ctx,
"checking for new logs",
slog.F("triggered_by", debugTriggeredBy),
slog.F("only_check_latest_build", onlyCheckLatestBuild),
slog.F("keep_going", keepGoing),
slog.F("last_sent_log_id", lastSentLogID),
slog.F("workspace_has_agents", len(agents) > 0),
)
if onlyCheckLatestBuild && keepGoing {
continue
}
logs, err := api.Database.GetWorkspaceAgentLogsAfter(ctx, database.GetWorkspaceAgentLogsAfterParams{
AgentID: workspaceAgent.ID,
CreatedAfter: lastSentLogID,
})
if err != nil {
if xerrors.Is(err, context.Canceled) {
return
}
logger.Warn(ctx, "failed to get workspace agent logs after", slog.Error(err))
continue
}
if len(logs) == 0 {
// Just keep listening - more logs might come in the future!
continue
}
select {
case <-ctx.Done():
return
case bufferedLogs <- logs:
lastSentLogID = logs[len(logs)-1].ID
}
}
}()
defer func() {
// Ensure that we don't return until the goroutine has exited.
//nolint:revive // Consume channel to wait until it's closed.
for range bufferedLogs {
}
}()
for {
select {
case <-ctx.Done():
logger.Debug(ctx, "job logs context canceled")
return
case logs, ok := <-bufferedLogs:
if !ok {
select {
case <-ctx.Done():
logger.Debug(ctx, "job logs context canceled")
default:
logger.Debug(ctx, "reached the end of published logs")
}
return
}
err = encoder.Encode(convertWorkspaceAgentLogs(logs))
if err != nil {
return
}
}
}
}
// @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()
workspaceAgent := httpmw.WorkspaceAgentParam(r)
apiAgent, err := convertWorkspaceAgent(
api.DERPMap(), *api.TailnetCoordinator.Load(), workspaceAgent, nil, api.AgentInactiveDisconnectTimeout,
api.DeploymentValues.AgentFallbackTroubleshootingURL.String(),
)
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.agentProvider.AgentConn(ctx, 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)
}
// Deprecated: use api.tailnet.AgentConn instead.
// See: https://github.com/coder/coder/issues/8218
func (api *API) _dialWorkspaceAgentTailnet(agentID uuid.UUID) (*codersdk.WorkspaceAgentConn, error) {
clientConn, serverConn := net.Pipe()
derpMap := api.DERPMap()
conn, err := tailnet.NewConn(&tailnet.Options{
Addresses: []netip.Prefix{netip.PrefixFrom(tailnet.IP(), 128)},
DERPMap: api.DERPMap(),
DERPForceWebSockets: api.DeploymentValues.DERP.Config.ForceWebSockets.Value(),
Logger: api.Logger.Named("net.tailnet"),
BlockEndpoints: api.DeploymentValues.DERP.Config.BlockDirect.Value(),
})
if err != nil {
_ = clientConn.Close()
_ = serverConn.Close()
return nil, xerrors.Errorf("create tailnet conn: %w", err)
}
ctx, cancel := context.WithCancel(api.ctx)
conn.SetDERPRegionDialer(func(_ context.Context, region *tailcfg.DERPRegion) net.Conn {
if !region.EmbeddedRelay {
return nil
}
left, right := net.Pipe()
go func() {
defer left.Close()
defer right.Close()
brw := bufio.NewReadWriter(bufio.NewReader(right), bufio.NewWriter(right))
api.DERPServer.Accept(ctx, right, brw, "internal")
}()
return left
})
sendNodes, _ := tailnet.ServeCoordinator(clientConn, func(nodes []*tailnet.Node) error {
return conn.UpdateNodes(nodes, true)
})
conn.SetNodeCallback(sendNodes)
// Check for updated DERP map every 5 seconds.
go func() {
ticker := time.NewTicker(5 * time.Second)
defer ticker.Stop()
for {
lastDERPMap := derpMap
for {
select {
case <-ctx.Done():
return
case <-ticker.C:
}
derpMap := api.DERPMap()
if lastDERPMap == nil || tailnet.CompareDERPMaps(lastDERPMap, derpMap) {
conn.SetDERPMap(derpMap)
lastDERPMap = derpMap
}
ticker.Reset(5 * time.Second)
}
}
}()
agentConn := codersdk.NewWorkspaceAgentConn(conn, codersdk.WorkspaceAgentConnOptions{
AgentID: agentID,
AgentIP: codersdk.WorkspaceAgentIP,
CloseFunc: func() error {
cancel()
_ = clientConn.Close()
_ = serverConn.Close()
return nil
},
})
go func() {
err := (*api.TailnetCoordinator.Load()).ServeClient(serverConn, uuid.New(), agentID)
if err != nil {
// Sometimes, we get benign closed pipe errors when the server is
// shutting down.
if api.ctx.Err() == nil {
api.Logger.Warn(ctx, "tailnet coordinator client error", slog.Error(err))
}
_ = agentConn.Close()
}
}()
if !agentConn.AwaitReachable(ctx) {
_ = agentConn.Close()
_ = serverConn.Close()
_ = clientConn.Close()
cancel()
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()
httpapi.Write(ctx, rw, http.StatusOK, codersdk.WorkspaceAgentConnectionInfo{
DERPMap: api.DERPMap(),
DERPForceWebSockets: api.DeploymentValues.DERP.Config.ForceWebSockets.Value(),
DisableDirectConnections: api.DeploymentValues.DERP.Config.BlockDirect.Value(),
})
}
// workspaceAgentConnectionGeneric is the same as workspaceAgentConnection but
// without the workspaceagent path parameter.
//
// @Summary Get connection info for workspace agent generic
// @ID get-connection-info-for-workspace-agent-generic
// @Security CoderSessionToken
// @Produce json
// @Tags Agents
// @Success 200 {object} codersdk.WorkspaceAgentConnectionInfo
// @Router /workspaceagents/connection [get]
// @x-apidocgen {"skip": true}
func (api *API) workspaceAgentConnectionGeneric(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
httpapi.Write(ctx, rw, http.StatusOK, codersdk.WorkspaceAgentConnectionInfo{
DERPMap: api.DERPMap(),
DERPForceWebSockets: api.DeploymentValues.DERP.Config.ForceWebSockets.Value(),
DisableDirectConnections: api.DeploymentValues.DERP.Config.BlockDirect.Value(),
})
}
// @Summary Get DERP map updates
// @ID get-derp-map-updates
// @Security CoderSessionToken
// @Tags Agents
// @Success 101
// @Router /derp-map [get]
func (api *API) derpMapUpdates(rw http.ResponseWriter, r *http.Request) {
ctx := r.Context()
api.WebsocketWaitMutex.Lock()
api.WebsocketWaitGroup.Add(1)
api.WebsocketWaitMutex.Unlock()
defer api.WebsocketWaitGroup.Done()
ws, 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, nconn := websocketNetConn(ctx, ws, websocket.MessageBinary)
defer nconn.Close()
// Slurp all packets from the connection into io.Discard so pongs get sent
// by the websocket package. We don't do any reads ourselves so this is
// necessary.
go func() {
_, _ = io.Copy(io.Discard, nconn)
_ = nconn.Close()
}()
go func(ctx context.Context) {
// TODO(mafredri): Is this too frequent? Use separate ping disconnect timeout?
t := time.NewTicker(api.AgentConnectionUpdateFrequency)
defer t.Stop()
for {
select {
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