package dispatch
import (
+ "bytes"
"context"
"fmt"
- "log"
"sync"
"time"
- "git.curoverse.com/arvados.git/sdk/go/arvados"
- "git.curoverse.com/arvados.git/sdk/go/arvadosclient"
+ "git.arvados.org/arvados.git/lib/dispatchcloud"
+ "git.arvados.org/arvados.git/sdk/go/arvados"
+ "git.arvados.org/arvados.git/sdk/go/arvadosclient"
+ "github.com/sirupsen/logrus"
)
const (
Cancelled = arvados.ContainerStateCancelled
)
+type Logger interface {
+ Printf(string, ...interface{})
+ Warnf(string, ...interface{})
+ Debugf(string, ...interface{})
+}
+
// Dispatcher struct
type Dispatcher struct {
Arv *arvadosclient.ArvadosClient
+ Logger Logger
+
// Batch size for container queries
- BatchSize int64
+ BatchSize int
// Queue polling frequency
PollPeriod time.Duration
// running, and return.
//
// The DispatchFunc should not return until the container is finished.
-type DispatchFunc func(*Dispatcher, arvados.Container, <-chan arvados.Container)
+type DispatchFunc func(*Dispatcher, arvados.Container, <-chan arvados.Container) error
// Run watches the API server's queue for containers that are either
// ready to run and available to lock, or are already locked by this
// dispatcher's token. When a new one appears, Run calls RunContainer
// in a new goroutine.
func (d *Dispatcher) Run(ctx context.Context) error {
+ if d.Logger == nil {
+ d.Logger = logrus.StandardLogger()
+ }
+
err := d.Arv.Call("GET", "api_client_authorizations", "", "current", nil, &d.auth)
if err != nil {
return fmt.Errorf("error getting my token UUID: %v", err)
// Containers that I know about that didn't show up in any
// query should be let go.
for uuid, tracker := range todo {
- log.Printf("Container %q not returned by any query, stopping tracking.", uuid)
+ d.Logger.Printf("Container %q not returned by any query, stopping tracking.", uuid)
tracker.close()
}
// Start a runner in a new goroutine, and send the initial container
// record to its updates channel.
func (d *Dispatcher) start(c arvados.Container) *runTracker {
- tracker := &runTracker{updates: make(chan arvados.Container, 1)}
+ tracker := &runTracker{
+ updates: make(chan arvados.Container, 1),
+ logger: d.Logger,
+ }
tracker.updates <- c
go func() {
- d.RunContainer(d, c, tracker.updates)
- // RunContainer blocks for the lifetime of the container. When
- // it returns, the tracker should delete itself.
+ err := d.RunContainer(d, c, tracker.updates)
+ if err != nil {
+ text := fmt.Sprintf("Error running container %s: %s", c.UUID, err)
+ if err, ok := err.(dispatchcloud.ConstraintsNotSatisfiableError); ok {
+ var logBuf bytes.Buffer
+ fmt.Fprintf(&logBuf, "cannot run container %s: %s\n", c.UUID, err)
+ if len(err.AvailableTypes) == 0 {
+ fmt.Fprint(&logBuf, "No instance types are configured.\n")
+ } else {
+ fmt.Fprint(&logBuf, "Available instance types:\n")
+ for _, t := range err.AvailableTypes {
+ fmt.Fprintf(&logBuf,
+ "Type %q: %d VCPUs, %d RAM, %d Scratch, %f Price\n",
+ t.Name, t.VCPUs, t.RAM, t.Scratch, t.Price)
+ }
+ }
+ text = logBuf.String()
+ d.UpdateState(c.UUID, Cancelled)
+ }
+ d.Logger.Printf("%s", text)
+ lr := arvadosclient.Dict{"log": arvadosclient.Dict{
+ "object_uuid": c.UUID,
+ "event_type": "dispatch",
+ "properties": map[string]string{"text": text}}}
+ d.Arv.Create("logs", lr, nil)
+ d.Unlock(c.UUID)
+ }
+
d.mtx.Lock()
delete(d.trackers, c.UUID)
d.mtx.Unlock()
"order": []string{"priority desc"}}
err := d.Arv.List("containers", params, &countList)
if err != nil {
- log.Printf("error getting count of containers: %q", err)
+ d.Logger.Warnf("error getting count of containers: %q", err)
return false
}
itemsAvailable := countList.ItemsAvailable
err := d.Arv.List("containers", params, &list)
if err != nil {
- log.Printf("Error getting list of containers: %q", err)
+ d.Logger.Warnf("error getting list of containers: %q", err)
return false
}
d.checkListForUpdates(list.Items, todo)
delete(todo, c.UUID)
if c.LockedByUUID != "" && c.LockedByUUID != d.auth.UUID {
- log.Printf("debug: ignoring %s locked by %s", c.UUID, c.LockedByUUID)
+ d.Logger.Debugf("ignoring %s locked by %s", c.UUID, c.LockedByUUID)
} else if alreadyTracking {
switch c.State {
case Queued:
}
err := d.lock(c.UUID)
if err != nil {
- log.Printf("debug: error locking container %s: %s", c.UUID, err)
+ d.Logger.Warnf("error locking container %s: %s", c.UUID, err)
break
}
c.State = Locked
"container": arvadosclient.Dict{"state": state},
}, nil)
if err != nil {
- log.Printf("Error updating container %s to state %q: %s", uuid, state, err)
+ d.Logger.Warnf("error updating container %s to state %q: %s", uuid, state, err)
}
return err
}
type runTracker struct {
closing bool
updates chan arvados.Container
+ logger Logger
}
func (tracker *runTracker) close() {
}
select {
case <-tracker.updates:
- log.Printf("debug: runner is handling updates slowly, discarded previous update for %s", c.UUID)
+ tracker.logger.Debugf("runner is handling updates slowly, discarded previous update for %s", c.UUID)
default:
}
tracker.updates <- c