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* Basic script runner Signed-off-by: Eytan Avisror <[email protected]> * Update upgrade.go Signed-off-by: Eytan Avisror <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,133 @@ | ||
| /* | ||
| Copyright 2019 Intuit, Inc.. | ||
| 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 controllers | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "os" | ||
| "os/exec" | ||
|
|
||
| "github.com/go-logr/logr" | ||
| "github.com/keikoproj/upgrade-manager/api/v1alpha1" | ||
| ) | ||
|
|
||
| const ( | ||
| ShellBinary = "/bin/sh" | ||
| ) | ||
|
|
||
| type ScriptRunner struct { | ||
| logr.Logger | ||
| } | ||
|
|
||
| type ScriptTarget struct { | ||
| InstanceID string | ||
| NodeName string | ||
| UpgradeObject *v1alpha1.RollingUpgrade | ||
| } | ||
|
|
||
| func NewScriptRunner(logger logr.Logger) ScriptRunner { | ||
| return ScriptRunner{ | ||
| Logger: logger, | ||
| } | ||
| } | ||
|
|
||
| func (r *ScriptRunner) getEnv(target ScriptTarget) []string { | ||
| var ( | ||
| asgNameEnv = "ASG_NAME" | ||
| instanceIdEnv = "INSTANCE_ID" | ||
| instanceNameEnv = "INSTANCE_NAME" | ||
| ) | ||
| return []string{ | ||
| fmt.Sprintf("%s=%s", asgNameEnv, target.UpgradeObject.ScalingGroupName()), | ||
| fmt.Sprintf("%s=%s", instanceIdEnv, target.InstanceID), | ||
| fmt.Sprintf("%s=%s", instanceNameEnv, target.NodeName), | ||
| } | ||
| } | ||
|
|
||
| func (r *ScriptRunner) runScript(script string, target ScriptTarget) (string, error) { | ||
| r.Info("running script", "script", script, "name", target.UpgradeObject.NamespacedName()) | ||
| command := exec.Command(ShellBinary, "-c", script) | ||
| command.Env = append(os.Environ(), r.getEnv(target)...) | ||
|
|
||
| out, err := command.CombinedOutput() | ||
| if err != nil { | ||
| return string(out), err | ||
| } | ||
| return string(out), nil | ||
| } | ||
|
|
||
| func (r *ScriptRunner) PostTerminate(target ScriptTarget) error { | ||
| script := target.UpgradeObject.PostTerminateScript() | ||
| if script == "" { | ||
| return nil | ||
| } | ||
|
|
||
| out, err := r.runScript(script, target) | ||
| if err != nil { | ||
| r.Info("script execution failed", "output", out, "stage", "PostTerminate", "script", script, "name", target.UpgradeObject.NamespacedName(), "target", target.NodeName) | ||
| return err | ||
| } | ||
|
|
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| r.Info("script execution succeeded", "output", out, "stage", "PostTerminate", "script", script, "name", target.UpgradeObject.NamespacedName(), "target", target.NodeName) | ||
|
|
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| return nil | ||
| } | ||
|
|
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| func (r *ScriptRunner) PreDrain(target ScriptTarget) error { | ||
| script := target.UpgradeObject.PreDrainScript() | ||
| if script == "" { | ||
| return nil | ||
| } | ||
|
|
||
| out, err := r.runScript(script, target) | ||
| if err != nil { | ||
| r.Info("script execution failed", "output", out, "stage", "PreDrain", "script", script, "name", target.UpgradeObject.NamespacedName(), "target", target.NodeName) | ||
| return err | ||
| } | ||
|
|
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| r.Info("script execution succeeded", "output", out, "stage", "PreDrain", "script", script, "name", target.UpgradeObject.NamespacedName(), "target", target.NodeName) | ||
| return nil | ||
| } | ||
|
|
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| func (r *ScriptRunner) PostDrain(target ScriptTarget) error { | ||
| script := target.UpgradeObject.PostDrainScript() | ||
| if script == "" { | ||
| return nil | ||
| } | ||
|
|
||
| out, err := r.runScript(script, target) | ||
| if err != nil { | ||
| r.Info("script execution failed", "output", out, "stage", "PostDrain", "script", script, "name", target.UpgradeObject.NamespacedName(), "target", target.NodeName) | ||
| return err | ||
| } | ||
|
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| r.Info("script execution succeeded", "output", out, "stage", "PostDrain", "script", script, "name", target.UpgradeObject.NamespacedName(), "target", target.NodeName) | ||
| return nil | ||
| } | ||
|
|
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| func (r *ScriptRunner) PostWait(target ScriptTarget) error { | ||
| script := target.UpgradeObject.PostWaitScript() | ||
| if script == "" { | ||
| return nil | ||
| } | ||
|
|
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| out, err := r.runScript(script, target) | ||
| if err != nil { | ||
| r.Info("script execution failed", "output", out, "stage", "PostWait", "script", script, "name", target.UpgradeObject.NamespacedName(), "target", target.NodeName) | ||
| return err | ||
| } | ||
|
|
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| r.Info("script execution succeeded", "output", out, "stage", "PostWait", "script", script, "name", target.UpgradeObject.NamespacedName(), "target", target.NodeName) | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,48 @@ | ||
| package controllers | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
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| "github.com/keikoproj/upgrade-manager/api/v1alpha1" | ||
| "github.com/onsi/gomega" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| runtimelog "sigs.k8s.io/controller-runtime/pkg/log" | ||
| ) | ||
|
|
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| func TestScriptSuccess(t *testing.T) { | ||
| g := gomega.NewGomegaWithT(t) | ||
| r := &ScriptRunner{Logger: runtimelog.NullLogger{}} | ||
| target := ScriptTarget{ | ||
| InstanceID: "instance", | ||
| NodeName: "node", | ||
| UpgradeObject: &v1alpha1.RollingUpgrade{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: "foo", | ||
| Namespace: "default", | ||
| }, | ||
| }, | ||
| } | ||
|
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| out, err := r.runScript("echo hello", target) | ||
| g.Expect(err).To(gomega.BeNil()) | ||
| g.Expect(out).To(gomega.Equal("hello\n")) | ||
| } | ||
|
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| func TestScriptFailure(t *testing.T) { | ||
| g := gomega.NewGomegaWithT(t) | ||
| r := &ScriptRunner{Logger: runtimelog.NullLogger{}} | ||
| target := ScriptTarget{ | ||
| InstanceID: "instance", | ||
| NodeName: "node", | ||
| UpgradeObject: &v1alpha1.RollingUpgrade{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: "foo", | ||
| Namespace: "default", | ||
| }, | ||
| }, | ||
| } | ||
|
|
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| out, err := r.runScript("echo this will fail; exit 1", target) | ||
| g.Expect(err).To(gomega.Not(gomega.BeNil())) | ||
| g.Expect(out).To(gomega.Not(gomega.Equal(""))) | ||
| } |
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