414 lines
13 KiB
Go
414 lines
13 KiB
Go
// Copyright 2016-2017, Pulumi Corporation. All rights reserved.
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package integration
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io"
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"io/ioutil"
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"os"
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"os/exec"
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"path"
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"path/filepath"
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"strings"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/pulumi/pulumi/pkg/resource/stack"
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"github.com/pulumi/pulumi/pkg/util/cmdutil"
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"github.com/pulumi/pulumi/pkg/util/contract"
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"github.com/pulumi/pulumi/pkg/workspace"
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)
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const (
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testStackName = "integrationtesting"
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)
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// EditDir is an optional edit to apply to the example, as subsequent deployments.
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type EditDir struct {
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Dir string
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ExtraRuntimeValidation func(t *testing.T, checkpoint stack.Checkpoint)
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}
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// ProgramTestOptions provides options for ProgramTest
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type ProgramTestOptions struct {
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// Dir is the program directory to test.
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Dir string
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// Array of NPM packages which must be `yarn linked` (e.g. {"pulumi", "@pulumi/aws"})
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Dependencies []string
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// Map of config keys and values to set (e.g. {"aws:config:region": "us-east-2"})
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Config map[string]string
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// Map of secure config keys and values to set on the Lumi stack (e.g. {"aws:config:region": "us-east-2"})
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Secrets map[string]string
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// EditDirs is an optional list of edits to apply to the example, as subsequent deployments.
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EditDirs []EditDir
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// ExtraRuntimeValidation is an optional callback for additional validation, called before applying edits.
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ExtraRuntimeValidation func(t *testing.T, checkpoint stack.Checkpoint)
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// Stdout is the writer to use for all stdout messages.
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Stdout io.Writer
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// Stderr is the writer to use for all stderr messages.
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Stderr io.Writer
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// Bin is a location of a `pulumi` executable to be run. Taken from the $PATH if missing.
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Bin string
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// YarnBin is a location of a `yarn` executable to be run. Taken from the $PATH if missing.
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YarnBin string
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}
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// With combines a source set of options with a set of overrides.
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func (opts ProgramTestOptions) With(overrides ProgramTestOptions) ProgramTestOptions {
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if overrides.Dir != "" {
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opts.Dir = overrides.Dir
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}
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if overrides.Dependencies != nil {
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opts.Dependencies = overrides.Dependencies
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}
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for k, v := range overrides.Config {
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if opts.Config == nil {
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opts.Config = make(map[string]string)
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}
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opts.Config[k] = v
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}
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if overrides.EditDirs != nil {
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opts.EditDirs = overrides.EditDirs
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}
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return opts
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}
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// ProgramTest runs a lifecycle of Pulumi commands in a program working directory, using the `pulumi` and `yarn`
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// binaries available on PATH. It essentially executes the following workflow:
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//
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// yarn install
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// yarn link <each opts.Depencies>
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// yarn run build
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// pulumi stack init integrationtesting
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// pulumi config text <each opts.Config>
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// pulumi config secret <each opts.Secrets>
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// pulumi preview
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// pulumi update
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// pulumi preview (expected to be empty)
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// pulumi update (expected to be empty)
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// pulumi destroy --yes
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// pulumi stack rm --yes integrationtesting
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//
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// All commands must return success return codes for the test to succeed.
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func ProgramTest(t *testing.T, opts ProgramTestOptions) {
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t.Parallel()
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dir, err := CopyTestToTemporaryDirectory(t, &opts)
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if !assert.NoError(t, err) {
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return
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}
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// Ensure all links are present, the stack is created, and all configs are applied.
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_, err = fmt.Fprintf(opts.Stdout, "Initializing project\n")
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contract.IgnoreError(err)
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RunCommand(t, []string{opts.Bin, "stack", "init", testStackName}, dir, opts)
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for key, value := range opts.Config {
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RunCommand(t, []string{opts.Bin, "config", "text", key, value}, dir, opts)
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}
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for key, value := range opts.Secrets {
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RunCommand(t, []string{opts.Bin, "config", "secret", key, value}, dir, opts)
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}
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// Now preview and update the real changes.
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_, err = fmt.Fprintf(opts.Stdout, "Performing primary preview and update\n")
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contract.IgnoreError(err)
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previewAndUpdate := func(d string) {
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RunCommand(t, []string{opts.Bin, "preview"}, d, opts)
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RunCommand(t, []string{opts.Bin, "update"}, d, opts)
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}
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previewAndUpdate(dir)
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// Perform an empty preview and update; nothing is expected to happen here.
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_, err = fmt.Fprintf(opts.Stdout, "Performing empty preview and update (no changes expected)\n")
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contract.IgnoreError(err)
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previewAndUpdate(dir)
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// Run additional validation provided by the test options, passing in the
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if opts.ExtraRuntimeValidation != nil {
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err = performExtraRuntimeValidation(t, opts.ExtraRuntimeValidation, dir)
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if err != nil {
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return
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}
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}
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// If there are any edits, apply them and run a preview and update for each one.
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for _, edit := range opts.EditDirs {
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_, err = fmt.Fprintf(opts.Stdout, "Applying edit '%v' and rerunning preview and update\n", edit)
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contract.IgnoreError(err)
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dir, err = prepareProject(t, edit.Dir, dir, opts)
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if !assert.NoError(t, err, "Expected to apply edit %v atop %v, but got an error %v", edit, dir, err) {
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return
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}
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previewAndUpdate(dir)
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if edit.ExtraRuntimeValidation != nil {
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err = performExtraRuntimeValidation(t, edit.ExtraRuntimeValidation, dir)
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if err != nil {
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return
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}
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}
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}
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// Finally, tear down the stack, and clean up the stack.
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_, err = fmt.Fprintf(opts.Stdout, "Destroying stack\n")
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contract.IgnoreError(err)
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RunCommand(t, []string{opts.Bin, "destroy", "--yes"}, dir, opts)
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RunCommand(t, []string{opts.Bin, "stack", "rm", "--yes", testStackName}, dir, opts)
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}
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func performExtraRuntimeValidation(
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t *testing.T,
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extraRuntimeValidation func(t *testing.T, checkpoint stack.Checkpoint),
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dir string) (err error) {
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checkpointFile := path.Join(dir, workspace.Dir, "stacks", testStackName+".json")
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var byts []byte
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byts, err = ioutil.ReadFile(path.Join(dir, workspace.Dir, "stacks", testStackName+".json"))
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if !assert.NoError(t, err, "Expected to be able to read checkpoint file at %v: %v", checkpointFile, err) {
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return err
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}
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var checkpoint stack.Checkpoint
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err = json.Unmarshal(byts, &checkpoint)
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if !assert.NoError(t, err, "Expected to be able to deserialize checkpoint file at %v: %v", checkpointFile, err) {
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return err
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}
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extraRuntimeValidation(t, checkpoint)
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return nil
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}
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// CopyTestToTemporaryDirectory creates a temporary directory to run the test in and copies the test to it.
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func CopyTestToTemporaryDirectory(t *testing.T, opts *ProgramTestOptions) (dir string, err error) {
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// Ensure the required programs are present.
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if opts.Bin == "" {
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var lumi string
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lumi, err = exec.LookPath("pulumi")
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if !assert.NoError(t, err, "Expected to find `pulumi` binary on $PATH: %v", err) {
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return dir, err
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}
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opts.Bin = lumi
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}
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if opts.YarnBin == "" {
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var yarn string
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yarn, err = exec.LookPath("yarn")
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if !assert.NoError(t, err, "Expected to find `yarn` binary on $PATH: %v", err) {
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return dir, err
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}
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opts.YarnBin = yarn
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}
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// Set up a prefix so that all output has the test directory name in it. This is important for debugging
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// because we run tests in parallel, and so all output will be interleaved and difficult to follow otherwise.
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dir = opts.Dir
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prefix := fmt.Sprintf("[ %30.30s ] ", dir[len(dir)-30:])
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stdout := opts.Stdout
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if stdout == nil {
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stdout = newPrefixer(os.Stdout, prefix)
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opts.Stdout = stdout
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}
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stderr := opts.Stderr
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if stderr == nil {
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stderr = newPrefixer(os.Stderr, prefix)
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opts.Stderr = stderr
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}
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_, err = fmt.Fprintf(opts.Stdout, "sample: %v\n", dir)
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contract.IgnoreError(err)
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_, err = fmt.Fprintf(opts.Stdout, "pulumi: %v\n", opts.Bin)
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contract.IgnoreError(err)
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_, err = fmt.Fprintf(opts.Stdout, "yarn: %v\n", opts.YarnBin)
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contract.IgnoreError(err)
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// Now copy the source project, excluding the .pulumi directory.
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dir, err = prepareProject(t, dir, "", *opts)
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if !assert.NoError(t, err, "Failed to copy source project %v to a new temp dir: %v", dir, err) {
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return dir, err
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}
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_, err = fmt.Fprintf(stdout, "projdir: %v\n", dir)
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contract.IgnoreError(err)
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return dir, err
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}
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// RunCommand executes the specified command and additional arguments, wrapping any output in the
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// specialized test output streams that list the location the test is running in.
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func RunCommand(t *testing.T, args []string, wd string, opts ProgramTestOptions) {
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path := args[0]
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command := strings.Join(args, " ")
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_, err := fmt.Fprintf(opts.Stdout, "\n**** Invoke '%v' in %v\n", command, wd)
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contract.IgnoreError(err)
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// Spawn a goroutine to print out "still running..." messages.
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finished := false
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go func() {
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for !finished {
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time.Sleep(30 * time.Second)
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if !finished {
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_, stillerr := fmt.Fprintf(opts.Stderr, "Still running command '%s' (%s)...\n", command, wd)
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contract.IgnoreError(stillerr)
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}
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}
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}()
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env := append(os.Environ(), "PULUMI_RETAIN_CHECKPOINTS=true")
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env = append(env, "PULUMI_CONFIG_PASSPHRASE=correct horse battery staple")
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cmd := exec.Cmd{
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Path: path,
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Dir: wd,
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Args: args,
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Env: env,
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Stdout: opts.Stdout,
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Stderr: opts.Stderr,
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}
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runerr := cmd.Run()
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finished = true
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if runerr != nil {
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_, err = fmt.Fprintf(opts.Stdout, "Invoke '%v' failed: %s\n", command, cmdutil.DetailedError(runerr))
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contract.IgnoreError(err)
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}
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assert.NoError(t, runerr, "Expected to successfully invoke '%v' in %v: %v", command, wd, runerr)
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}
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// prepareProject copies the source directory, src (excluding .pulumi), to a new temporary directory. It then copies
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// .pulumi/ and Pulumi.yaml from origin, if any, for edits. The function returns the newly resulting directory.
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func prepareProject(t *testing.T, src string, origin string, opts ProgramTestOptions) (string, error) {
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// Create a new temp directory.
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dir, err := ioutil.TempDir("", "lumi-integration-test-")
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if err != nil {
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return "", err
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}
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// Now copy the source into it, ignoring .pulumi/ and Pulumi.yaml if there's an origin.
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wdir := workspace.Dir
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proj := workspace.ProjectFile + ".yaml"
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excl := make(map[string]bool)
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if origin != "" {
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excl[wdir] = true
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excl[proj] = true
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}
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if copyerr := copyFile(dir, src, excl); copyerr != nil {
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return "", copyerr
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}
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// Now, copy back the original project's .pulumi/ and Pulumi.yaml atop the target.
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if origin != "" {
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if copyerr := copyFile(filepath.Join(dir, proj), filepath.Join(origin, proj), nil); copyerr != nil {
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return "", copyerr
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}
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if copyerr := copyFile(filepath.Join(dir, wdir), filepath.Join(origin, wdir), nil); copyerr != nil {
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return "", copyerr
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}
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}
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// Write a .yarnrc file to pass --mutex network to all yarn invocations, since tests
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// may run concurrently and yarn may fail if invoked concurrently
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// https://github.com/yarnpkg/yarn/issues/683
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yarnrcerr := ioutil.WriteFile(filepath.Join(dir, ".yarnrc"), []byte("--mutex network\n"), 0644)
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if yarnrcerr != nil {
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return "", yarnrcerr
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}
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// Now ensure dependencies are present.
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RunCommand(t, withOptionalYarnFlags([]string{opts.YarnBin, "install", "--verbose"}), dir, opts)
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for _, dependency := range opts.Dependencies {
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RunCommand(t, withOptionalYarnFlags([]string{opts.YarnBin, "link", dependency}), dir, opts)
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}
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// And finally compile it using whatever build steps are in the package.json file.
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RunCommand(t, withOptionalYarnFlags([]string{opts.YarnBin, "run", "build"}), dir, opts)
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return dir, nil
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}
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func withOptionalYarnFlags(args []string) []string {
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flags := os.Getenv("YARNFLAGS")
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if flags != "" {
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return append(args, flags)
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}
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return args
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}
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// copyFile is a braindead simple function that copies a src file to a dst file. Note that it is not general purpose:
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// it doesn't handle symbolic links, it doesn't try to be efficient, it doesn't handle copies where src and dst overlap,
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// and it makes no attempt to preserve file permissions. It is what we need for this test package, no more, no less.
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func copyFile(dst string, src string, excl map[string]bool) error {
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info, err := os.Lstat(src)
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if os.IsNotExist(err) {
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return nil
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} else if err != nil {
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return err
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} else if excl[info.Name()] {
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return nil
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}
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if info.IsDir() {
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// Recursively copy all files in a directory.
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files, err := ioutil.ReadDir(src)
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if err != nil {
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return err
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}
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for _, file := range files {
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name := file.Name()
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copyerr := copyFile(filepath.Join(dst, name), filepath.Join(src, name), excl)
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if copyerr != nil {
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return copyerr
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}
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}
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} else if info.Mode().IsRegular() {
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// Copy files by reading and rewriting their contents. Skip symlinks and other special files.
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data, err := ioutil.ReadFile(src)
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if err != nil {
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return err
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}
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dstdir := filepath.Dir(dst)
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if err = os.MkdirAll(dstdir, 0700); err != nil {
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return err
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}
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if err = ioutil.WriteFile(dst, data, info.Mode()); err != nil {
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return err
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}
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}
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return nil
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}
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type prefixer struct {
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writer io.Writer
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prefix []byte
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anyOutput bool
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}
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// newPrefixer wraps an io.Writer, prepending a fixed prefix after each \n emitting on the wrapped writer
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func newPrefixer(writer io.Writer, prefix string) *prefixer {
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return &prefixer{writer, []byte(prefix), false}
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}
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var _ io.Writer = (*prefixer)(nil)
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func (prefixer *prefixer) Write(p []byte) (int, error) {
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n := 0
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lines := bytes.SplitAfter(p, []byte{'\n'})
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for _, line := range lines {
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if len(line) > 0 {
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_, err := prefixer.writer.Write(prefixer.prefix)
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if err != nil {
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return n, err
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}
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}
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m, err := prefixer.writer.Write(line)
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n += m
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if err != nil {
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return n, err
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}
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}
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return n, nil
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}
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