agola/internal/services/executor/driver/k8s_test.go

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// Copyright 2019 Sorint.lab
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied
// See the License for the specific language governing permissions and
// limitations under the License.
package driver
import (
"bytes"
"context"
"io/ioutil"
"os"
"testing"
"time"
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uuid "github.com/satori/go.uuid"
)
func TestK8sPod(t *testing.T) {
if os.Getenv("SKIP_K8S_TESTS") == "1" {
t.Skip("skipping since env var SKIP_K8S_TESTS is 1")
}
toolboxPath := os.Getenv("AGOLA_TOOLBOX_PATH")
if toolboxPath == "" {
t.Fatalf("env var AGOLA_TOOLBOX_PATH is undefined")
}
dir, err := ioutil.TempDir("", "agola")
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
defer os.RemoveAll(dir)
d, err := NewK8sDriver(logger, "executorid01", toolboxPath)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
ctx := context.Background()
t.Run("create a pod with one container", func(t *testing.T) {
pod, err := d.NewPod(ctx, &PodConfig{
ID: uuid.NewV4().String(),
TaskID: uuid.NewV4().String(),
Containers: []*ContainerConfig{
&ContainerConfig{
Cmd: []string{"cat"},
Image: "busybox",
},
},
InitVolumeDir: "/tmp/agola",
}, ioutil.Discard)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
defer func() { _ = pod.Remove(ctx) }()
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})
t.Run("execute a command inside a pod", func(t *testing.T) {
pod, err := d.NewPod(ctx, &PodConfig{
ID: uuid.NewV4().String(),
TaskID: uuid.NewV4().String(),
Containers: []*ContainerConfig{
&ContainerConfig{
Cmd: []string{"cat"},
Image: "busybox",
},
},
InitVolumeDir: "/tmp/agola",
}, ioutil.Discard)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
defer func() { _ = pod.Remove(ctx) }()
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var buf bytes.Buffer
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ce, err := pod.Exec(ctx, &ExecConfig{
Cmd: []string{"ls"},
Stdout: &buf,
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})
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
code, err := ce.Wait(ctx)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
if code != 0 {
t.Fatalf("unexpected exit code: %d", code)
}
})
t.Run("test pod environment", func(t *testing.T) {
env := map[string]string{
"ENV01": "ENVVALUE01",
"ENV02": "ENVVALUE02",
}
pod, err := d.NewPod(ctx, &PodConfig{
ID: uuid.NewV4().String(),
TaskID: uuid.NewV4().String(),
Containers: []*ContainerConfig{
&ContainerConfig{
Cmd: []string{"cat"},
Image: "busybox",
Env: env,
},
},
InitVolumeDir: "/tmp/agola",
}, ioutil.Discard)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
defer func() { _ = pod.Remove(ctx) }()
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var buf bytes.Buffer
ce, err := pod.Exec(ctx, &ExecConfig{
Cmd: []string{"env"},
Stdout: &buf,
Stderr: os.Stdout,
})
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
code, err := ce.Wait(ctx)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
if code != 0 {
t.Fatalf("unexpected exit code: %d", code)
}
curEnv, err := parseEnvs(bytes.NewReader(buf.Bytes()))
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
for n, e := range env {
if ce, ok := curEnv[n]; !ok {
t.Fatalf("missing env var %s", n)
} else {
if ce != e {
t.Fatalf("different env var %s value, want: %q, got %q", n, e, ce)
}
}
}
})
t.Run("create a pod with two containers", func(t *testing.T) {
pod, err := d.NewPod(ctx, &PodConfig{
ID: uuid.NewV4().String(),
TaskID: uuid.NewV4().String(),
Containers: []*ContainerConfig{
&ContainerConfig{
Cmd: []string{"cat"},
Image: "busybox",
},
&ContainerConfig{
Image: "nginx:1.16",
},
},
InitVolumeDir: "/tmp/agola",
}, ioutil.Discard)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
defer func() { _ = pod.Remove(ctx) }()
})
t.Run("test communication between two containers", func(t *testing.T) {
pod, err := d.NewPod(ctx, &PodConfig{
ID: uuid.NewV4().String(),
TaskID: uuid.NewV4().String(),
Containers: []*ContainerConfig{
&ContainerConfig{
Cmd: []string{"cat"},
Image: "busybox",
},
&ContainerConfig{
Image: "nginx:1.16",
},
},
InitVolumeDir: "/tmp/agola",
}, ioutil.Discard)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
defer func() { _ = pod.Remove(ctx) }()
// wait for nginx up
time.Sleep(1 * time.Second)
var buf bytes.Buffer
ce, err := pod.Exec(ctx, &ExecConfig{
Cmd: []string{"nc", "-z", "localhost", "80"},
Stdout: &buf,
})
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
code, err := ce.Wait(ctx)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
if code != 0 {
t.Fatalf("unexpected exit code: %d", code)
}
})
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t.Run("test get pods", func(t *testing.T) {
pod, err := d.NewPod(ctx, &PodConfig{
ID: uuid.NewV4().String(),
TaskID: uuid.NewV4().String(),
Containers: []*ContainerConfig{
&ContainerConfig{
Cmd: []string{"cat"},
Image: "busybox",
},
},
InitVolumeDir: "/tmp/agola",
}, ioutil.Discard)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
defer func() { _ = pod.Remove(ctx) }()
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pods, err := d.GetPods(ctx, true)
if err != nil {
t.Fatalf("unexpected err: %v", err)
}
ok := false
for _, p := range pods {
if p.ID() == pod.ID() {
ok = true
}
}
if !ok {
t.Fatalf("pod with id %q not found", pod.ID())
}
})
}