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fixture.go
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fixture.go
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// Copyright 2022 Namespace Labs Inc; All rights reserved.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
package testing
import (
"context"
"fmt"
"google.golang.org/protobuf/types/known/timestamppb"
"namespacelabs.dev/foundation/internal/artifacts/oci"
"namespacelabs.dev/foundation/internal/build"
"namespacelabs.dev/foundation/internal/compute"
"namespacelabs.dev/foundation/internal/fnerrors"
"namespacelabs.dev/foundation/internal/parsing"
"namespacelabs.dev/foundation/internal/planning"
"namespacelabs.dev/foundation/internal/planning/deploy"
"namespacelabs.dev/foundation/internal/planning/eval"
"namespacelabs.dev/foundation/internal/protos"
"namespacelabs.dev/foundation/internal/runtime"
"namespacelabs.dev/foundation/internal/support"
"namespacelabs.dev/foundation/schema"
"namespacelabs.dev/foundation/schema/storage"
"namespacelabs.dev/foundation/std/cfg"
"namespacelabs.dev/foundation/std/pkggraph"
"namespacelabs.dev/foundation/std/tasks"
)
type StoredTestResults struct {
Bundle *storage.TestResultBundle
TestBundleSummary *storage.TestBundle
TestPackage schema.PackageName
Packages pkggraph.SealedPackageLoader
}
type TestOpts struct {
ParentRunID string
Debug bool
OutputProgress bool
KeepRuntime bool // If true, don't release test-specific runtime resources (e.g. Kubernetes namespace).
}
func PrepareTest(ctx context.Context, pl *parsing.PackageLoader, env cfg.Context, testRef *schema.PackageRef, opts TestOpts) (compute.Computable[StoredTestResults], error) {
testPkg, err := pl.LoadByName(ctx, testRef.AsPackageName())
if err != nil {
return nil, err
}
testDef, err := findTest(testPkg.Location, testPkg.Tests, testRef.Name)
if err != nil {
return nil, err
}
driverPkg, err := pl.LoadByName(ctx, testDef.Driver.AsPackageName())
if err != nil {
return nil, err
}
deferred, err := runtime.ClassFor(ctx, env)
if err != nil {
return nil, fnerrors.AttachLocation(testPkg.Location, err)
}
purpose := fmt.Sprintf("Test cluster for %s", testPkg.Location)
// This can block for some time.
planner, err := deferred.Planner(ctx, env, purpose)
if err != nil {
return nil, fnerrors.AttachLocation(testPkg.Location, err)
}
stack, err := loadSUT(ctx, env, planner, pl, testDef)
if err != nil {
return nil, fnerrors.NewWithLocation(testPkg.Location, "failed to load fixture: %w", err)
}
pack := &schema.ResourcePack{}
if err := parsing.AddServersAsResourcesToPack(ctx, pl, testRef, stack.Focus.PackageNames(), pack); err != nil {
return nil, err
}
resources, err := parsing.LoadResources(ctx, pl, testPkg, testRef.Canonical(), pack)
if err != nil {
return nil, err
}
// Must be no "pl" usage after this point:
// All packages have been bound to the environment, and sealed.
packages := pl.Seal()
sealedCtx := pkggraph.MakeSealedContext(env, packages)
driverDef, err := driverDefinition(driverPkg, testDef)
if err != nil {
return nil, err
}
driver := &testDriver{
TestRef: testRef,
Location: driverPkg.Location,
Definition: driverDef,
Stack: stack,
SealedContext: sealedCtx,
Planner: planner,
Resources: resources,
Debug: opts.Debug,
}
p, err := planning.NewPlannerFromExisting(env, planner)
if err != nil {
return nil, err
}
deployPlan, err := deploy.PrepareDeployStack(ctx, p, stack, driver)
if err != nil {
return nil, fnerrors.NewWithLocation(testPkg.Location, "failed to load stack: %w", err)
}
sutServers := stack.Focus
var results compute.Computable[*storage.TestResultBundle] = &testRun{
SealedContext: sealedCtx,
Planner: planner,
TestRef: testRef,
Plan: deployPlan,
ServersUnderTest: sutServers,
Stack: stack.Proto(),
Driver: driver,
OutputProgress: opts.OutputProgress,
}
createdTs := timestamppb.Now()
testBundle := compute.Transform("to-bundle", results, func(ctx context.Context, bundle *storage.TestResultBundle) (*storage.TestBundle, error) {
return &storage.TestBundle{
ParentRunId: opts.ParentRunID,
TestPackage: testDef.PackageName,
TestName: testDef.Name,
Result: bundle.Result,
ServersUnderTest: sutServers.PackageNamesAsString(),
Created: createdTs,
Started: bundle.Started,
Completed: bundle.Completed,
EnvDiagnostics: bundle.EnvDiagnostics,
}, nil
})
return compute.Map(tasks.Action("test.make-results"),
compute.Inputs().
Indigestible("packages", packages).
Computable("bundle", results).
Computable("testBundle", testBundle),
compute.Output{NotCacheable: true},
func(ctx context.Context, deps compute.Resolved) (StoredTestResults, error) {
return StoredTestResults{
Bundle: compute.MustGetDepValue(deps, results, "bundle"),
TestBundleSummary: compute.MustGetDepValue(deps, testBundle, "testBundle"),
TestPackage: testRef.AsPackageName(),
Packages: packages,
}, nil
}), nil
}
func driverDefinition(pkg *pkggraph.Package, test *schema.Test) (*schema.Binary, error) {
for _, bin := range pkg.Binaries {
if bin.Name == test.Driver.Name {
bin := protos.Clone(bin)
if bin.Config == nil {
bin.Config = &schema.BinaryConfig{}
}
// TODO consider if this should be a replacement.
bin.Config.Args = append(bin.Config.Args, test.BinaryConfig.GetArgs()...)
var err error
bin.Config.Env, err = support.MergeEnvs(bin.Config.Env, test.BinaryConfig.GetEnv())
if err != nil {
return nil, err
}
return bin, nil
}
}
return nil, fnerrors.NewWithLocation(pkg.Location, "did not find binary %q", test.Driver.Name)
}
func loadSUT(ctx context.Context, env cfg.Context, planner runtime.Planner, pl *parsing.PackageLoader, test *schema.Test) (*planning.Stack, error) {
var suts []planning.Server
for _, pkg := range test.ServersUnderTest {
sut, err := planning.RequireServerWith(ctx, env, pl, schema.PackageName(pkg))
if err != nil {
return nil, err
}
suts = append(suts, sut)
}
stack, err := planning.ComputeStack(ctx, suts, planning.ProvisionOpts{Planner: planner, PortRange: eval.DefaultPortRange()})
if err != nil {
return nil, err
}
return stack, nil
}
func findTest(loc pkggraph.Location, tests []*schema.Test, name string) (*schema.Test, error) {
for _, t := range tests {
if t.Name == name {
return t, nil
}
}
return nil, fnerrors.NewWithLocation(loc, "%s: test not found", name)
}
type buildAndAttachDataLayer struct {
baseName string
spec build.Spec
dataLayer oci.NamedLayer
}
func (b buildAndAttachDataLayer) BuildImage(ctx context.Context, env pkggraph.SealedContext, conf build.Configuration) (compute.Computable[oci.Image], error) {
base, err := b.spec.BuildImage(ctx, env, conf)
if err != nil {
return nil, err
}
return oci.MakeImage(b.baseName, oci.MakeNamedImage(b.baseName, base), b.dataLayer).Image(), nil
}
func (b buildAndAttachDataLayer) PlatformIndependent() bool {
return b.spec.PlatformIndependent()
}