func containerOriginTable(nmd report.Node, addHostTag bool) (Table, bool) {
rows := []Row{}
for _, tuple := range []struct{ key, human string }{
{docker.ContainerState, "State"},
} {
if val, ok := nmd.Latest.Lookup(tuple.key); ok && val != "" {
rows = append(rows, Row{Key: tuple.human, ValueMajor: val, ValueMinor: ""})
}
}
for _, tuple := range []struct{ key, human string }{
{docker.ContainerID, "ID"},
{docker.ImageID, "Image ID"},
{docker.ContainerPorts, "Ports"},
{docker.ContainerCreated, "Created"},
{docker.ContainerCommand, "Command"},
{overlay.WeaveMACAddress, "Weave MAC"},
{overlay.WeaveDNSHostname, "Weave DNS Hostname"},
} {
if val, ok := nmd.Metadata[tuple.key]; ok && val != "" {
rows = append(rows, Row{Key: tuple.human, ValueMajor: val, ValueMinor: ""})
}
}
for _, ip := range docker.ExtractContainerIPs(nmd) {
rows = append(rows, Row{Key: "IP Address", ValueMajor: ip, ValueMinor: ""})
}
rows = append(rows, getDockerLabelRows(nmd)...)
if addHostTag {
rows = append([]Row{{Key: "Host", ValueMajor: report.ExtractHostID(nmd)}}, rows...)
}
if val, ok := nmd.Metrics[docker.MemoryUsage]; ok {
rows = append(rows, sparklineRow("Memory Usage", val, formatMemory))
}
if val, ok := nmd.Metrics[docker.CPUTotalUsage]; ok {
rows = append(rows, sparklineRow("CPU Usage", val, formatPercent))
}
var (
title = "Container"
name, nameFound = GetRenderableContainerName(nmd)
)
if nameFound {
title += ` "` + name + `"`
}
return Table{
Title: title,
Numeric: false,
Rows: rows,
Rank: containerRank,
}, len(rows) > 0 || nameFound
}
func (w Weave) tagContainer(r report.Report, containerIDPrefix, macAddress string, ips []string) {
for nodeid, nmd := range r.Container.NodeMetadatas {
idPrefix := nmd.Metadata[docker.ContainerID][:12]
if idPrefix != containerIDPrefix {
continue
}
existingIPs := report.MakeIDList(docker.ExtractContainerIPs(nmd)...)
existingIPs = existingIPs.Add(ips...)
nmd.Metadata[docker.ContainerIPs] = strings.Join(existingIPs, " ")
nmd.Metadata[WeaveMACAddress] = macAddress
r.Container.NodeMetadatas[nodeid] = nmd
break
}
}
func containerOriginTable(nmd report.Node, addHostTag bool) (Table, bool) {
rows := []Row{}
for _, tuple := range []struct{ key, human string }{
{docker.ContainerState, "State"},
{docker.ContainerID, "ID"},
{docker.ImageID, "Image ID"},
{docker.ContainerPorts, "Ports"},
{docker.ContainerCreated, "Created"},
{docker.ContainerCommand, "Command"},
{overlay.WeaveMACAddress, "Weave MAC"},
{overlay.WeaveDNSHostname, "Weave DNS Hostname"},
} {
if val, ok := nmd.Metadata[tuple.key]; ok && val != "" {
rows = append(rows, Row{Key: tuple.human, ValueMajor: val, ValueMinor: ""})
}
}
for _, ip := range docker.ExtractContainerIPs(nmd) {
rows = append(rows, Row{Key: "IP Address", ValueMajor: ip, ValueMinor: ""})
}
rows = append(rows, getDockerLabelRows(nmd)...)
if val, ok := nmd.Metadata[docker.MemoryUsage]; ok {
memory, err := strconv.ParseFloat(val, 64)
if err == nil {
memoryStr := fmt.Sprintf("%0.2f", memory/float64(mb))
rows = append(rows, Row{Key: "Memory Usage (MB):", ValueMajor: memoryStr, ValueMinor: ""})
}
}
if addHostTag {
rows = append([]Row{{Key: "Host", ValueMajor: report.ExtractHostID(nmd)}}, rows...)
}
var (
title = "Container"
name, nameFound = GetRenderableContainerName(nmd)
)
if nameFound {
title += ` "` + name + `"`
}
return Table{
Title: title,
Numeric: false,
Rows: rows,
Rank: containerRank,
}, len(rows) > 0 || nameFound
}
// Tag implements Tagger.
func (w *Weave) Tag(r report.Report) (report.Report, error) {
w.mtx.RLock()
defer w.mtx.RUnlock()
// Put information from weaveDNS on the container nodes
for _, entry := range w.status.DNS.Entries {
if entry.Tombstone > 0 {
continue
}
nodeID := report.MakeContainerNodeID(w.hostID, entry.ContainerID)
node, ok := r.Container.Nodes[nodeID]
if !ok {
continue
}
hostnames := report.IDList(strings.Fields(node.Metadata[WeaveDNSHostname]))
hostnames = hostnames.Add(strings.TrimSuffix(entry.Hostname, "."))
node.Metadata[WeaveDNSHostname] = strings.Join(hostnames, " ")
}
// Put information from weave ps on the container nodes
psEntries, err := w.ps()
if err != nil {
return r, nil
}
containersByPrefix := map[string]report.Node{}
for _, node := range r.Container.Nodes {
prefix := node.Metadata[docker.ContainerID][:12]
containersByPrefix[prefix] = node
}
for _, e := range psEntries {
node, ok := containersByPrefix[e.containerIDPrefix]
if !ok {
continue
}
existingIPs := report.MakeIDList(docker.ExtractContainerIPs(node)...)
existingIPs = existingIPs.Add(e.ips...)
node.Metadata[docker.ContainerIPs] = strings.Join(existingIPs, " ")
node.Metadata[WeaveMACAddress] = e.macAddress
}
return r, nil
}
func TestContainer(t *testing.T) {
log.SetOutput(ioutil.Discard)
oldDialStub, oldNewClientConnStub := docker.DialStub, docker.NewClientConnStub
defer func() { docker.DialStub, docker.NewClientConnStub = oldDialStub, oldNewClientConnStub }()
docker.DialStub = func(network, address string) (net.Conn, error) {
return nil, nil
}
reader, writer := io.Pipe()
connection := &mockConnection{reader}
docker.NewClientConnStub = func(c net.Conn, r *bufio.Reader) docker.ClientConn {
return connection
}
c := docker.NewContainer(container1)
err := c.StartGatheringStats()
if err != nil {
t.Errorf("%v", err)
}
defer c.StopGatheringStats()
now := time.Unix(12345, 67890).UTC()
mtime.NowForce(now)
defer mtime.NowReset()
// Send some stats to the docker container
stats := &client.Stats{}
stats.Read = now
stats.MemoryStats.Usage = 12345
if err = json.NewEncoder(writer).Encode(&stats); err != nil {
t.Error(err)
}
// Now see if we go them
uptime := (now.Sub(startTime) / time.Second) * time.Second
want := report.MakeNode().WithLatests(map[string]string{
"docker_container_command": " ",
"docker_container_created": "01 Jan 01 00:00 UTC",
"docker_container_id": "ping",
"docker_container_name": "pong",
"docker_image_id": "baz",
"docker_label_foo1": "bar1",
"docker_label_foo2": "bar2",
"docker_container_state": "running",
"docker_container_uptime": uptime.String(),
}).WithSets(report.EmptySets.
Add("docker_container_ports", report.MakeStringSet("1.2.3.4:80->80/tcp", "81/tcp")).
Add("docker_container_ips", report.MakeStringSet("1.2.3.4")).
Add("docker_container_ips_with_scopes", report.MakeStringSet("scope;1.2.3.4")),
).WithControls(
docker.RestartContainer, docker.StopContainer, docker.PauseContainer,
docker.AttachContainer, docker.ExecContainer,
).WithMetrics(report.Metrics{
"docker_cpu_total_usage": report.MakeMetric(),
"docker_memory_usage": report.MakeMetric().Add(now, 12345),
}).WithParents(report.EmptySets.
Add(report.ContainerImage, report.MakeStringSet(report.MakeContainerImageNodeID("baz"))),
)
test.Poll(t, 100*time.Millisecond, want, func() interface{} {
node := c.GetNode("scope", []net.IP{})
node.Latest.ForEach(func(k, v string) {
if v == "0" || v == "" {
node.Latest = node.Latest.Delete(k)
}
})
return node
})
if c.Image() != "baz" {
t.Errorf("%s != baz", c.Image())
}
if c.PID() != 2 {
t.Errorf("%d != 2", c.PID())
}
if have := docker.ExtractContainerIPs(c.GetNode("", []net.IP{})); !reflect.DeepEqual(have, []string{"1.2.3.4"}) {
t.Errorf("%v != %v", have, []string{"1.2.3.4"})
}
}
func TestContainer(t *testing.T) {
log.SetOutput(ioutil.Discard)
oldDialStub, oldNewClientConnStub := docker.DialStub, docker.NewClientConnStub
defer func() { docker.DialStub, docker.NewClientConnStub = oldDialStub, oldNewClientConnStub }()
docker.DialStub = func(network, address string) (net.Conn, error) {
return nil, nil
}
reader, writer := io.Pipe()
connection := &mockConnection{reader}
docker.NewClientConnStub = func(c net.Conn, r *bufio.Reader) docker.ClientConn {
return connection
}
c := docker.NewContainer(container1)
err := c.StartGatheringStats()
if err != nil {
t.Errorf("%v", err)
}
defer c.StopGatheringStats()
// Send some stats to the docker container
stats := &client.Stats{}
stats.MemoryStats.Usage = 12345
if err = json.NewEncoder(writer).Encode(&stats); err != nil {
t.Error(err)
}
// Now see if we go them
want := report.MakeNode().WithMetadata(map[string]string{
"docker_container_command": " ",
"docker_container_created": "01 Jan 01 00:00 UTC",
"docker_container_id": "ping",
"docker_container_name": "pong",
"docker_image_id": "baz",
"docker_label_foo1": "bar1",
"docker_label_foo2": "bar2",
"memory_usage": "12345",
"docker_container_state": "running",
}).WithSets(report.Sets{
"docker_container_ports": report.MakeStringSet("1.2.3.4:80->80/tcp", "81/tcp"),
"docker_container_ips": report.MakeStringSet("1.2.3.4"),
"docker_container_ips_with_scopes": report.MakeStringSet("scope;1.2.3.4"),
}).WithControls(docker.RestartContainer, docker.StopContainer, docker.PauseContainer)
test.Poll(t, 100*time.Millisecond, want, func() interface{} {
node := c.GetNode("scope", []net.IP{})
for k, v := range node.Metadata {
if v == "0" || v == "" {
delete(node.Metadata, k)
}
}
return node
})
if c.Image() != "baz" {
t.Errorf("%s != baz", c.Image())
}
if c.PID() != 1 {
t.Errorf("%d != 1", c.PID())
}
if have := docker.ExtractContainerIPs(c.GetNode("", []net.IP{})); !reflect.DeepEqual(have, []string{"1.2.3.4"}) {
t.Errorf("%v != %v", have, []string{"1.2.3.4"})
}
}