fixup! update(falco/driver)!: use the same names for drivers as falco

charts/falco/tests/unit/consts.go

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2024 The Falco Authors
+//
+// 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 unit
+
+const (
+	releaseName                  = "rendered-resources"
+	patternK8sMetacollectorFiles = `# Source: falco/charts/k8s-metacollector/templates/([^\n]+)`
+	k8sMetaPluginName            = "k8smeta"
+)

charts/falco/tests/unit/doc.go

@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2024 The Falco Authors
+//
+// 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 unit contains the unit tests for the Falco chart.
+package unit

charts/falco/tests/unit/driverConfig_test.go

@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2024 The Falco Authors
+//
+// 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 unit
+
+import (
+	"fmt"
+	"path/filepath"
+	"testing"
+
+	"github.com/gruntwork-io/terratest/modules/helm"
+	"github.com/stretchr/testify/require"
+	corev1 "k8s.io/api/core/v1"
+)
+
+func TestDriverConfigInFalcoConfig(t *testing.T) {
+	t.Parallel()
+
+	helmChartPath, err := filepath.Abs(chartPath)
+	require.NoError(t, err)
+
+	testCases := []struct {
+		name     string
+		values   map[string]string
+		expected func(t *testing.T, config any)
+	}{
+		{
+			"defaultValues",
+			nil,
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, bufSizePreset, dropFailedExit, err := getKmodConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "kmod", kind)
+				require.Equal(t, float64(4), bufSizePreset)
+				require.False(t, dropFailedExit)
+			},
+		},
+		{
+			"kind=kmod",
+			map[string]string{
+				"driver.kind": "kmod",
+			},
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, bufSizePreset, dropFailedExit, err := getKmodConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "kmod", kind)
+				require.Equal(t, float64(4), bufSizePreset)
+				require.False(t, dropFailedExit)
+			},
+		},
+		{
+			"kind=module(alias)",
+			map[string]string{
+				"driver.kind": "module",
+			},
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, bufSizePreset, dropFailedExit, err := getKmodConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "kmod", kind)
+				require.Equal(t, float64(4), bufSizePreset)
+				require.False(t, dropFailedExit)
+			},
+		},
+		{
+			"kmod=onfig",
+			map[string]string{
+				"driver.kmod.bufSizePreset":  "6",
+				"driver.kmod.dropFailedExit": "true",
+			},
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, bufSizePreset, dropFailedExit, err := getKmodConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "kmod", kind)
+				require.Equal(t, float64(6), bufSizePreset)
+				require.True(t, dropFailedExit)
+			},
+		},
+		{
+			"kind=ebpf",
+			map[string]string{
+				"driver.kind":                "ebpf",
+				"driver.ebpf.bufSizePreset":  "6",
+				"driver.ebpf.dropFailedExit": "true",
+				"driver.ebpf.path":           "testing/Path/ebpf",
+			},
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, path, bufSizePreset, dropFailedExit, err := getEbpfConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "ebpf", kind)
+				require.Equal(t, "testing/Path/ebpf", path)
+				require.Equal(t, float64(6), bufSizePreset)
+				require.True(t, dropFailedExit)
+			},
+		},
+		{
+			"ebpf=config",
+			map[string]string{
+				"driver.kind": "ebpf",
+			},
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, path, bufSizePreset, dropFailedExit, err := getEbpfConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "ebpf", kind)
+				require.Equal(t, "${HOME}/.falco/falco-bpf.o", path)
+				require.Equal(t, float64(4), bufSizePreset)
+				require.False(t, dropFailedExit)
+			},
+		},
+		{
+			"kind=modern_ebpf",
+			map[string]string{
+				"driver.kind": "modern_ebpf",
+			},
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, bufSizePreset, cpusForEachBuffer, dropFailedExit, err := getModernEbpfConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "modern_ebpf", kind)
+				require.Equal(t, float64(4), bufSizePreset)
+				require.Equal(t, float64(2), cpusForEachBuffer)
+				require.False(t, dropFailedExit)
+			},
+		},
+		{
+			"kind=modern-bpf(alias)",
+			map[string]string{
+				"driver.kind": "modern-bpf",
+			},
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, bufSizePreset, cpusForEachBuffer, dropFailedExit, err := getModernEbpfConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "modern_ebpf", kind)
+				require.Equal(t, float64(4), bufSizePreset)
+				require.Equal(t, float64(2), cpusForEachBuffer)
+				require.False(t, dropFailedExit)
+			},
+		},
+		{
+			"modernEbpf=config",
+			map[string]string{
+				"driver.kind":                         "modern-bpf",
+				"driver.modernEbpf.bufSizePreset":     "6",
+				"driver.modernEbpf.dropFailedExit":    "true",
+				"driver.modernEbpf.cpusForEachBuffer": "8",
+			},
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, bufSizePreset, cpusForEachBuffer, dropFailedExit, err := getModernEbpfConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "modern_ebpf", kind)
+				require.Equal(t, float64(6), bufSizePreset)
+				require.Equal(t, float64(8), cpusForEachBuffer)
+				require.True(t, dropFailedExit)
+			},
+		},
+		{
+			"kind=gvisor",
+			map[string]string{
+				"driver.kind": "gvisor",
+			},
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, config, root, err := getGvisorConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "gvisor", kind)
+				require.Equal(t, "/gvisor/config/pod-init.json", config)
+				require.Equal(t, "/host/run/containerd/runsc/k8s.io", root)
+			},
+		},
+		{
+			"gvisor=config",
+			map[string]string{
+				"driver.kind":              "gvisor",
+				"driver.gvisor.runsc.root": "/my/root/test",
+			},
+			func(t *testing.T, config any) {
+				require.Len(t, config, 2, "should have only two items")
+				kind, config, root, err := getGvisorConfig(config)
+				require.NoError(t, err)
+				require.Equal(t, "gvisor", kind)
+				require.Equal(t, "/gvisor/config/pod-init.json", config)
+				require.Equal(t, "/host/my/root/test/k8s.io", root)
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+		testCase := testCase
+
+		t.Run(testCase.name, func(t *testing.T) {
+			t.Parallel()
+
+			options := &helm.Options{SetValues: testCase.values}
+			output := helm.RenderTemplate(t, options, helmChartPath, releaseName, []string{"templates/configmap.yaml"})
+
+			var cm corev1.ConfigMap
+			helm.UnmarshalK8SYaml(t, output, &cm)
+			var config map[string]interface{}
+
+			helm.UnmarshalK8SYaml(t, cm.Data["falco.yaml"], &config)
+			engine := config["engine"]
+			testCase.expected(t, engine)
+		})
+	}
+}
+
+func getKmodConfig(config interface{}) (kind string, bufSizePreset float64, dropFailedExit bool, err error) {
+	configMap, ok := config.(map[string]interface{})
+	if !ok {
+		err = fmt.Errorf("can't assert type of config")
+		return
+	}
+
+	kind = configMap["kind"].(string)
+	kmod := configMap["kmod"].(map[string]interface{})
+	bufSizePreset = kmod["buf_size_preset"].(float64)
+	dropFailedExit = kmod["drop_failed_exit"].(bool)
+
+	return
+}
+
+func getEbpfConfig(config interface{}) (kind, path string, bufSizePreset float64, dropFailedExit bool, err error) {
+	configMap, ok := config.(map[string]interface{})
+	if !ok {
+		err = fmt.Errorf("can't assert type of config")
+		return
+	}
+
+	kind = configMap["kind"].(string)
+	ebpf := configMap["ebpf"].(map[string]interface{})
+	bufSizePreset = ebpf["buf_size_preset"].(float64)
+	dropFailedExit = ebpf["drop_failed_exit"].(bool)
+	path = ebpf["probe"].(string)
+
+	return
+}
+
+func getModernEbpfConfig(config interface{}) (kind string, bufSizePreset, cpusForEachBuffer float64, dropFailedExit bool, err error) {
+	configMap, ok := config.(map[string]interface{})
+	if !ok {
+		err = fmt.Errorf("can't assert type of config")
+		return
+	}
+
+	kind = configMap["kind"].(string)
+	modernEbpf := configMap["modern_ebpf"].(map[string]interface{})
+	bufSizePreset = modernEbpf["buf_size_preset"].(float64)
+	dropFailedExit = modernEbpf["drop_failed_exit"].(bool)
+	cpusForEachBuffer = modernEbpf["cpus_for_each_buffer"].(float64)
+
+	return
+}
+
+func getGvisorConfig(cfg interface{}) (kind, config, root string, err error) {
+	configMap, ok := cfg.(map[string]interface{})
+	if !ok {
+		err = fmt.Errorf("can't assert type of config")
+		return
+	}
+
+	kind = configMap["kind"].(string)
+	gvisor := configMap["gvisor"].(map[string]interface{})
+	config = gvisor["config"].(string)
+	root = gvisor["root"].(string)
+
+	return
+}