diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md new file mode 100644 index 0000000..44227e4 --- /dev/null +++ b/.github/pull_request_template.md @@ -0,0 +1,17 @@ +## Describe your changes + +## Issue ticket number and link + +## Checklist before requesting a review +- [ ] I have performed a self-review of my code +- [ ] If it is a core feature, I have added thorough tests. +- I tested the changes with the following distributions: + - [ ] Kind + - [ ] MiniKube + - [ ] MicroK8s + - [ ] Rancher RKE2 + - [ ] Azure AKS + - [ ] GCP GKE (Ubuntu nodes) + - [ ] AWS EKS (AmazonLinux2 nodes) + - [ ] AWS EKS (Ubuntu nodes) + - [ ] Digital Ocean Kubernetes \ No newline at end of file diff --git a/.github/workflows/docker-build.yaml b/.github/workflows/docker-build.yaml index e5b3476..21db57a 100644 --- a/.github/workflows/docker-build.yaml +++ b/.github/workflows/docker-build.yaml @@ -45,13 +45,6 @@ jobs: # Setup docker build to use your Namespace workspace builder name: Set up Namespace Buildx uses: namespacelabs/nscloud-setup-buildx-action@v0 -# TODO: make builds from latest main branch conditional -# - name: Build runwasi as static muls for amd64 and arm64 -# run: | -# git clone --branch main --depth 1 https://github.com/containerd/runwasi.git && -# cd runwasi && -# docker build --platform=linux/arm64,linux/amd64 --build-arg BASE_IMAGE=alpine --build-arg CRATE="containerd-shim-wasmtime,containerd-shim-wasmedge,containerd-shim-wasmer" -t nscr.io/a8fcp47vcfori/build-runwasi --push . && -# cd - - name: Build and push Docker image uses: docker/build-push-action@v4 diff --git a/.golangci.yaml b/.golangci.yaml new file mode 100644 index 0000000..135cdc4 --- /dev/null +++ b/.golangci.yaml @@ -0,0 +1,292 @@ +# This code is licensed under the terms of the MIT license https://opensource.org/license/mit +# Copyright (c) 2021 Marat Reymers + +## Golden config for golangci-lint v1.56.2 +# +# This is the best config for golangci-lint based on my experience and opinion. +# It is very strict, but not extremely strict. +# Feel free to adapt and change it for your needs. + +run: + # Timeout for analysis, e.g. 30s, 5m. + # Default: 1m + timeout: 3m + + +# This file contains only configs which differ from defaults. +# All possible options can be found here https://github.com/golangci/golangci-lint/blob/master/.golangci.reference.yml +linters-settings: + cyclop: + # The maximal code complexity to report. + # Default: 10 + max-complexity: 30 + # The maximal average package complexity. + # If it's higher than 0.0 (float) the check is enabled + # Default: 0.0 + package-average: 10.0 + + errcheck: + # Report about not checking of errors in type assertions: `a := b.(MyStruct)`. + # Such cases aren't reported by default. + # Default: false + check-type-assertions: true + + exhaustive: + # Program elements to check for exhaustiveness. + # Default: [ switch ] + check: + - switch + - map + + exhaustruct: + # List of regular expressions to exclude struct packages and their names from checks. + # Regular expressions must match complete canonical struct package/name/structname. + # Default: [] + exclude: + # std libs + - "^net/http.Client$" + - "^net/http.Cookie$" + - "^net/http.Request$" + - "^net/http.Response$" + - "^net/http.Server$" + - "^net/http.Transport$" + - "^net/url.URL$" + - "^os/exec.Cmd$" + - "^reflect.StructField$" + # public libs + - "^github.com/Shopify/sarama.Config$" + - "^github.com/Shopify/sarama.ProducerMessage$" + - "^github.com/mitchellh/mapstructure.DecoderConfig$" + - "^github.com/prometheus/client_golang/.+Opts$" + - "^github.com/spf13/cobra.Command$" + - "^github.com/spf13/cobra.CompletionOptions$" + - "^github.com/stretchr/testify/mock.Mock$" + - "^github.com/testcontainers/testcontainers-go.+Request$" + - "^github.com/testcontainers/testcontainers-go.FromDockerfile$" + - "^golang.org/x/tools/go/analysis.Analyzer$" + - "^google.golang.org/protobuf/.+Options$" + - "^gopkg.in/yaml.v3.Node$" + + funlen: + # Checks the number of lines in a function. + # If lower than 0, disable the check. + # Default: 60 + lines: 100 + # Checks the number of statements in a function. + # If lower than 0, disable the check. + # Default: 40 + statements: 50 + # Ignore comments when counting lines. + # Default false + ignore-comments: true + + gocognit: + # Minimal code complexity to report. + # Default: 30 (but we recommend 10-20) + min-complexity: 20 + + gocritic: + # Settings passed to gocritic. + # The settings key is the name of a supported gocritic checker. + # The list of supported checkers can be find in https://go-critic.github.io/overview. + settings: + captLocal: + # Whether to restrict checker to params only. + # Default: true + paramsOnly: false + underef: + # Whether to skip (*x).method() calls where x is a pointer receiver. + # Default: true + skipRecvDeref: false + + gomnd: + # List of function patterns to exclude from analysis. + # Values always ignored: `time.Date`, + # `strconv.FormatInt`, `strconv.FormatUint`, `strconv.FormatFloat`, + # `strconv.ParseInt`, `strconv.ParseUint`, `strconv.ParseFloat`. + # Default: [] + ignored-functions: + - flag.Arg + - flag.Duration.* + - flag.Float.* + - flag.Int.* + - flag.Uint.* + - os.Chmod + - os.Mkdir.* + - os.OpenFile + - os.WriteFile + - prometheus.ExponentialBuckets.* + - prometheus.LinearBuckets + + govet: + # Enable all analyzers. + # Default: false + enable-all: true + # Disable analyzers by name. + # Run `go tool vet help` to see all analyzers. + # Default: [] + disable: + - fieldalignment # too strict + - shadow + # Settings per analyzer. + + inamedparam: + # Skips check for interface methods with only a single parameter. + # Default: false + skip-single-param: true + + nakedret: + # Make an issue if func has more lines of code than this setting, and it has naked returns. + # Default: 30 + max-func-lines: 0 + + nolintlint: + # Exclude following linters from requiring an explanation. + # Default: [] + allow-no-explanation: [ funlen, gocognit, lll ] + # Enable to require an explanation of nonzero length after each nolint directive. + # Default: false + require-explanation: true + # Enable to require nolint directives to mention the specific linter being suppressed. + # Default: false + require-specific: true + + rowserrcheck: + # database/sql is always checked + # Default: [] + packages: + - github.com/jmoiron/sqlx + + tenv: + # The option `all` will run against whole test files (`_test.go`) regardless of method/function signatures. + # Otherwise, only methods that take `*testing.T`, `*testing.B`, and `testing.TB` as arguments are checked. + # Default: false + all: true + + +linters: + disable-all: true + enable: + ## enabled by default + - errcheck # checking for unchecked errors, these unchecked errors can be critical bugs in some cases + - gosimple # specializes in simplifying a code + - govet # reports suspicious constructs, such as Printf calls whose arguments do not align with the format string + - ineffassign # detects when assignments to existing variables are not used + - staticcheck # is a go vet on steroids, applying a ton of static analysis checks + - typecheck # like the front-end of a Go compiler, parses and type-checks Go code + - unused # checks for unused constants, variables, functions and types + ## disabled by default + - asasalint # checks for pass []any as any in variadic func(...any) + - asciicheck # checks that your code does not contain non-ASCII identifiers + - bidichk # checks for dangerous unicode character sequences + - cyclop # checks function and package cyclomatic complexity + - dupl # tool for code clone detection + - errname # checks that sentinel errors are prefixed with the Err and error types are suffixed with the Error + - errorlint # finds code that will cause problems with the error wrapping scheme introduced in Go 1.13 + - exhaustive # checks exhaustiveness of enum switch statements + - exhaustruct # checks if all structure fields are initialized + - exportloopref # checks for pointers to enclosing loop variables + - forbidigo # forbids identifiers + - funlen # tool for detection of long functions + - gocognit # computes and checks the cognitive complexity of functions + - goconst # finds repeated strings that could be replaced by a constant + - gocritic # provides diagnostics that check for bugs, performance and style issues + - gocyclo # computes and checks the cyclomatic complexity of functions + - godot # checks if comments end in a period + - goimports # in addition to fixing imports, goimports also formats your code in the same style as gofmt + - gomnd # detects magic numbers + - goprintffuncname # checks that printf-like functions are named with f at the end + - gosec # inspects source code for security problems + - makezero # finds slice declarations with non-zero initial length + - nakedret # finds naked returns in functions greater than a specified function length + - nestif # reports deeply nested if statements + - nilerr # finds the code that returns nil even if it checks that the error is not nil + - nilnil # checks that there is no simultaneous return of nil error and an invalid value + - noctx # finds sending http request without context.Context + - nolintlint # reports ill-formed or insufficient nolint directives + - predeclared # finds code that shadows one of Go's predeclared identifiers + - promlinter # checks Prometheus metrics naming via promlint + - reassign # checks that package variables are not reassigned + - revive # fast, configurable, extensible, flexible, and beautiful linter for Go, drop-in replacement of golint + - sloglint # ensure consistent code style when using log/slog + - tenv # detects using os.Setenv instead of t.Setenv since Go1.17 + - testableexamples # checks if examples are testable (have an expected output) + - testifylint # checks usage of github.com/stretchr/testify + - testpackage # makes you use a separate _test package + - tparallel # detects inappropriate usage of t.Parallel() method in your Go test codes + - unconvert # removes unnecessary type conversions + - unparam # reports unused function parameters + - usestdlibvars # detects the possibility to use variables/constants from the Go standard library + - wastedassign # finds wasted assignment statements + - whitespace # detects leading and trailing whitespace + + ## you may want to enable + #- decorder # checks declaration order and count of types, constants, variables and functions + #- gci # controls golang package import order and makes it always deterministic + #- ginkgolinter # [if you use ginkgo/gomega] enforces standards of using ginkgo and gomega + #- godox # detects FIXME, TODO and other comment keywords + #- goheader # checks is file header matches to pattern + #- inamedparam # [great idea, but too strict, need to ignore a lot of cases by default] reports interfaces with unnamed method parameters + #- interfacebloat # checks the number of methods inside an interface + #- ireturn # accept interfaces, return concrete types + #- prealloc # [premature optimization, but can be used in some cases] finds slice declarations that could potentially be preallocated + #- tagalign # checks that struct tags are well aligned + #- varnamelen # [great idea, but too many false positives] checks that the length of a variable's name matches its scope + #- wrapcheck # checks that errors returned from external packages are wrapped + #- zerologlint # detects the wrong usage of zerolog that a user forgets to dispatch zerolog.Event + + ## disabled + #- containedctx # detects struct contained context.Context field + #- contextcheck # [too many false positives] checks the function whether use a non-inherited context + #- depguard # [replaced by gomodguard] checks if package imports are in a list of acceptable packages + #- dogsled # checks assignments with too many blank identifiers (e.g. x, _, _, _, := f()) + #- dupword # [useless without config] checks for duplicate words in the source code + #- errchkjson # [don't see profit + I'm against of omitting errors like in the first example https://github.com/breml/errchkjson] checks types passed to the json encoding functions. Reports unsupported types and optionally reports occasions, where the check for the returned error can be omitted + #- forcetypeassert # [replaced by errcheck] finds forced type assertions + #- goerr113 # [too strict] checks the errors handling expressions + #- gofmt # [replaced by goimports] checks whether code was gofmt-ed + #- gofumpt # [replaced by goimports, gofumports is not available yet] checks whether code was gofumpt-ed + #- gosmopolitan # reports certain i18n/l10n anti-patterns in your Go codebase + #- grouper # analyzes expression groups + #- importas # enforces consistent import aliases + #- maintidx # measures the maintainability index of each function + #- misspell # [useless] finds commonly misspelled English words in comments + #- nlreturn # [too strict and mostly code is not more readable] checks for a new line before return and branch statements to increase code clarity + #- paralleltest # [too many false positives] detects missing usage of t.Parallel() method in your Go test + #- tagliatelle # checks the struct tags + #- thelper # detects golang test helpers without t.Helper() call and checks the consistency of test helpers + #- wsl # [too strict and mostly code is not more readable] whitespace linter forces you to use empty lines + + ## deprecated + #- deadcode # [deprecated, replaced by unused] finds unused code + #- exhaustivestruct # [deprecated, replaced by exhaustruct] checks if all struct's fields are initialized + #- golint # [deprecated, replaced by revive] golint differs from gofmt. Gofmt reformats Go source code, whereas golint prints out style mistakes + #- ifshort # [deprecated] checks that your code uses short syntax for if-statements whenever possible + #- interfacer # [deprecated] suggests narrower interface types + #- maligned # [deprecated, replaced by govet fieldalignment] detects Go structs that would take less memory if their fields were sorted + #- nosnakecase # [deprecated, replaced by revive var-naming] detects snake case of variable naming and function name + #- scopelint # [deprecated, replaced by exportloopref] checks for unpinned variables in go programs + #- structcheck # [deprecated, replaced by unused] finds unused struct fields + #- varcheck # [deprecated, replaced by unused] finds unused global variables and constants + + +issues: + # Maximum count of issues with the same text. + # Set to 0 to disable. + # Default: 3 + max-same-issues: 50 + + exclude-rules: + - source: "(noinspection|TODO)" + linters: [ godot ] + - source: "//noinspection" + linters: [ gocritic ] + - path: "_test\\.go" + linters: + - bodyclose + - dupl + - funlen + - goconst + - gosec + - noctx + - wrapcheck diff --git a/cmd/config.go b/cmd/config.go new file mode 100644 index 0000000..2f4eff1 --- /dev/null +++ b/cmd/config.go @@ -0,0 +1,31 @@ +/* + Copyright The KWasm 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 cmd + +type Config struct { + Runtime struct { + Name string + ConfigPath string + } + Kwasm struct { + Path string + AssetPath string + } + Host struct { + RootPath string + } +} diff --git a/cmd/install.go b/cmd/install.go new file mode 100644 index 0000000..fb2c761 --- /dev/null +++ b/cmd/install.go @@ -0,0 +1,107 @@ +/* + Copyright The KWasm 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 cmd + +import ( + "fmt" + "io/fs" + "log/slog" + "os" + "path" + + "github.com/kwasm/kwasm-node-installer/pkg/containerd" + "github.com/kwasm/kwasm-node-installer/pkg/shim" + "github.com/spf13/afero" + "github.com/spf13/cobra" +) + +// installCmd represents the install command. +var installCmd = &cobra.Command{ + Use: "install", + Short: "Install containerd shims", + Run: func(_ *cobra.Command, _ []string) { + rootFs := afero.NewOsFs() + hostFs := afero.NewBasePathFs(rootFs, config.Host.RootPath) + restarter := containerd.ContainerdRestarter{} + + if err := RunInstall(config, rootFs, hostFs, restarter); err != nil { + slog.Error("failed to install", "error", err) + os.Exit(1) + } + }, +} + +func init() { + installCmd.Flags().StringVarP(&config.Kwasm.AssetPath, "asset-path", "a", "/assets", "Path to the asset to install") + rootCmd.AddCommand(installCmd) +} + +func RunInstall(config Config, rootFs, hostFs afero.Fs, restarter containerd.Restarter) error { + // Get file or directory information. + info, err := rootFs.Stat(config.Kwasm.AssetPath) + if err != nil { + return err + } + + var files []fs.FileInfo + // Check if the path is a directory. + if info.IsDir() { + files, err = afero.ReadDir(rootFs, config.Kwasm.AssetPath) + if err != nil { + return err + } + } else { + // If the path is not a directory, add the file to the list of files. + files = append(files, info) + config.Kwasm.AssetPath = path.Dir(config.Kwasm.AssetPath) + } + + containerdConfig := containerd.NewConfig(hostFs, config.Runtime.ConfigPath, restarter) + shimConfig := shim.NewConfig(rootFs, hostFs, config.Kwasm.AssetPath, config.Kwasm.Path) + + anythingChanged := false + for _, file := range files { + fileName := file.Name() + runtimeName := shim.RuntimeName(fileName) + + binPath, changed, err := shimConfig.Install(fileName) + if err != nil { + return fmt.Errorf("failed to install shim '%s': %w", runtimeName, err) + } + anythingChanged = anythingChanged || changed + slog.Info("shim installed", "shim", runtimeName, "path", binPath, "new-version", changed) + + err = containerdConfig.AddRuntime(binPath) + if err != nil { + return fmt.Errorf("failed to write containerd config: %w", err) + } + slog.Info("shim configured", "shim", runtimeName, "path", config.Runtime.ConfigPath) + } + + if !anythingChanged { + slog.Info("nothing changed, nothing more to do") + return nil + } + + slog.Info("restarting containerd") + err = containerdConfig.RestartRuntime() + if err != nil { + return fmt.Errorf("failed to restart containerd: %w", err) + } + + return nil +} diff --git a/cmd/install_test.go b/cmd/install_test.go new file mode 100644 index 0000000..f08b1ba --- /dev/null +++ b/cmd/install_test.go @@ -0,0 +1,94 @@ +/* + Copyright The KWasm 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 cmd_test + +import ( + "testing" + + "github.com/kwasm/kwasm-node-installer/cmd" + "github.com/kwasm/kwasm-node-installer/tests" + "github.com/spf13/afero" + "github.com/stretchr/testify/require" +) + +type nullRestarter struct{} + +func (n nullRestarter) Restart() error { + return nil +} + +func Test_RunInstall(t *testing.T) { + type args struct { + config cmd.Config + rootFs afero.Fs + hostFs afero.Fs + } + tests := []struct { + name string + args args + wantErr bool + }{ + { + "new shim", + args{ + cmd.Config{ + struct { + Name string + ConfigPath string + }{"containerd", "/etc/containerd/config.toml"}, + struct { + Path string + AssetPath string + }{"/opt/kwasm", "/assets"}, + struct{ RootPath string }{"/containerd/missing-containerd-shim-config"}, + }, + tests.FixtureFs("../testdata"), + tests.FixtureFs("../testdata/containerd/missing-containerd-shim-config"), + }, + false, + }, + { + "existing shim", + args{ + cmd.Config{ + struct { + Name string + ConfigPath string + }{"containerd", "/etc/containerd/config.toml"}, + struct { + Path string + AssetPath string + }{"/opt/kwasm", "/assets"}, + struct{ RootPath string }{"/containerd/existing-containerd-shim-config"}, + }, + tests.FixtureFs("../testdata"), + tests.FixtureFs("../testdata/containerd/existing-containerd-shim-config"), + }, + false, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + err := cmd.RunInstall(tt.args.config, tt.args.rootFs, tt.args.hostFs, nullRestarter{}) + if tt.wantErr { + require.Error(t, err) + } else { + require.NoError(t, err) + } + }) + } +} diff --git a/cmd/root.go b/cmd/root.go new file mode 100644 index 0000000..9da97d1 --- /dev/null +++ b/cmd/root.go @@ -0,0 +1,97 @@ +/* + Copyright The KWasm 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 cmd + +import ( + "errors" + "fmt" + "os" + "strings" + + "github.com/spf13/cobra" + "github.com/spf13/pflag" + "github.com/spf13/viper" +) + +var ( + config Config +) + +// rootCmd represents the base command when called without any subcommands. +var rootCmd = &cobra.Command{ + Use: "kwasm-node-installer", + Short: "kwasm-node-installer manages containerd shims", + PersistentPreRunE: func(cmd *cobra.Command, _ []string) error { + return initializeConfig(cmd) + }, +} + +// Execute adds all child commands to the root command and sets flags appropriately. +// This is called by main.main(). It only needs to happen once to the rootCmd. +func Execute() { + err := rootCmd.Execute() + if err != nil { + os.Exit(1) + } +} + +func init() { + rootCmd.PersistentFlags().StringVarP(&config.Runtime.Name, "runtime", "r", "containerd", "Set the container runtime to configure (containerd, cri-o)") + rootCmd.PersistentFlags().StringVarP(&config.Runtime.ConfigPath, "runtime-config", "c", "/etc/containerd/config.toml", "Path to the runtime config file") + rootCmd.PersistentFlags().StringVarP(&config.Kwasm.Path, "kwasm-path", "k", "/opt/kwasm", "Working directory for kwasm on the host") + rootCmd.PersistentFlags().StringVarP(&config.Host.RootPath, "host-root", "H", "/", "Path to the host root path") +} + +func initializeConfig(cmd *cobra.Command) error { + v := viper.New() + + v.SetConfigName("kwasm") + + v.AddConfigPath(".") + v.AddConfigPath("/etc") + + if err := v.ReadInConfig(); err != nil { + if !errors.As(err, &viper.ConfigFileNotFoundError{}) { + return err + } + } + + // Environment variables are prefixed with KWASM_ + v.SetEnvPrefix("KWASM") + + // - is replaced with _ in environment variables + v.SetEnvKeyReplacer(strings.NewReplacer("-", "_")) + + // Bind env variables + v.AutomaticEnv() + + bindFlags(cmd, v) + + return nil +} + +// bindFlags binds each cobra flag to its associated viper configuration. +func bindFlags(cmd *cobra.Command, v *viper.Viper) { + cmd.Flags().VisitAll(func(f *pflag.Flag) { + configName := strings.ReplaceAll(f.Name, "-", "_") + + if !f.Changed && v.IsSet(configName) { + val := v.Get(configName) + _ = cmd.Flags().Set(f.Name, fmt.Sprintf("%v", val)) + } + }) +} diff --git a/cmd/uninstall.go b/cmd/uninstall.go new file mode 100644 index 0000000..973f4eb --- /dev/null +++ b/cmd/uninstall.go @@ -0,0 +1,82 @@ +/* + Copyright The KWasm 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 cmd + +import ( + "fmt" + "log/slog" + "os" + "path" + + "github.com/spf13/afero" + "github.com/spf13/cobra" + + "github.com/kwasm/kwasm-node-installer/pkg/containerd" + "github.com/kwasm/kwasm-node-installer/pkg/shim" +) + +// uninstallCmd represents the uninstall command. +var uninstallCmd = &cobra.Command{ + Use: "uninstall", + Short: "Uninstall containerd shims", + Run: func(_ *cobra.Command, _ []string) { + rootFs := afero.NewOsFs() + hostFs := afero.NewBasePathFs(rootFs, config.Host.RootPath) + restarter := containerd.ContainerdRestarter{} + + if err := RunUninstall(config, rootFs, hostFs, restarter); err != nil { + slog.Error("failed to uninstall", "error", err) + os.Exit(1) + } + }, +} + +func init() { + rootCmd.AddCommand(uninstallCmd) +} + +func RunUninstall(config Config, rootFs, hostFs afero.Fs, restarter containerd.Restarter) error { + slog.Info("uninstall called") + shimName := config.Runtime.Name + runtimeName := path.Join(config.Kwasm.Path, "bin", shimName) + + containerdConfig := containerd.NewConfig(hostFs, config.Runtime.ConfigPath, restarter) + shimConfig := shim.NewConfig(rootFs, hostFs, config.Kwasm.AssetPath, config.Kwasm.Path) + + binPath, err := shimConfig.Uninstall(shimName) + if err != nil { + return fmt.Errorf("failed to delete shim '%s': %w", runtimeName, err) + } + + configChanged, err := containerdConfig.RemoveRuntime(binPath) + if err != nil { + return fmt.Errorf("failed to write conteainerd config for shim '%s': %w", runtimeName, err) + } + + if !configChanged { + slog.Info("nothing changed, nothing more to do") + return nil + } + + slog.Info("restarting containerd") + err = containerdConfig.RestartRuntime() + if err != nil { + return fmt.Errorf("failed to restart containerd: %w", err) + } + + return nil +} diff --git a/example/daemonset.yaml b/example/daemonset.yaml index e762e67..a53e3bf 100644 --- a/example/daemonset.yaml +++ b/example/daemonset.yaml @@ -21,19 +21,34 @@ spec: - name: node-root hostPath: path: / - - name: entrypoint - configMap: - name: entrypoint - defaultMode: 0744 + - name: assets + emptyDir: {} initContainers: - - image: ghcr.io/kwasm/kwasm-node-installer:main - name: kwasm-initializer + - image: busybox:latest + name: shim-downloader env: - - name: NODE_ROOT - value: /mnt/node-root + volumeMounts: + - name: assets + mountPath: /assets + command: ["/bin/sh", "-c"] + args: + - | + wget -O- https://github.com/deislabs/containerd-wasm-shims/releases/download/v0.9.1/containerd-wasm-shims-v1-lunatic-linux-$(uname -m).tar.gz | tar xzf - -C /assets; + wget -O- https://github.com/deislabs/containerd-wasm-shims/releases/download/v0.9.1/containerd-wasm-shims-v1-slight-linux-$(uname -m).tar.gz | tar -xzf - -C /assets; + wget -O- https://github.com/deislabs/containerd-wasm-shims/releases/download/v0.9.1/containerd-wasm-shims-v1-spin-linux-$(uname -m).tar.gz | tar -xzf - -C /assets; + wget -O- https://github.com/deislabs/containerd-wasm-shims/releases/download/v0.9.1/containerd-wasm-shims-v1-wws-linux-$(uname -m).tar.gz | tar -xzf - -C /assets + - image: ghcr.io/kwasm/kwasm-node-installer:pr-46 + name: kwasm-initializer + imagePullPolicy: Always + args: + - "install" + - "-H" + - "/mnt/node-root" securityContext: privileged: true volumeMounts: + - name: assets + mountPath: /assets - name: node-root mountPath: /mnt/node-root/ containers: diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..d92c0d2 --- /dev/null +++ b/go.mod @@ -0,0 +1,33 @@ +module github.com/kwasm/kwasm-node-installer + +go 1.22.0 + +require ( + github.com/spf13/cobra v1.7.0 + github.com/spf13/pflag v1.0.5 + github.com/spf13/viper v1.16.0 +) + +require ( + github.com/davecgh/go-spew v1.1.1 // indirect + github.com/pmezard/go-difflib v1.0.0 // indirect + github.com/stretchr/testify v1.9.0 +) + +require ( + github.com/fsnotify/fsnotify v1.6.0 // indirect + github.com/hashicorp/hcl v1.0.0 // indirect + github.com/inconshreveable/mousetrap v1.1.0 // indirect + github.com/magiconair/properties v1.8.7 // indirect + github.com/mitchellh/go-ps v1.0.0 + github.com/mitchellh/mapstructure v1.5.0 // indirect + github.com/pelletier/go-toml/v2 v2.0.8 // indirect + github.com/spf13/afero v1.9.5 + github.com/spf13/cast v1.5.1 // indirect + github.com/spf13/jwalterweatherman v1.1.0 // indirect + github.com/subosito/gotenv v1.4.2 // indirect + golang.org/x/sys v0.8.0 // indirect + golang.org/x/text v0.9.0 // indirect + gopkg.in/ini.v1 v1.67.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..6ba763b 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ubuntu:22.04 AS download-containerd-runwasi -RUN DEBIAN_FRONTEND=noninteractive apt-get update \ - && DEBIAN_FRONTEND=noninteractive apt-get install -y curl +WORKDIR /app -RUN mkdir -p /release/bin/ \ - && curl -L https://github.com/containerd/runwasi/releases/download/containerd-shim-wasmedge%2Fv0.3.0/containerd-shim-wasmedge-$(uname -m | sed s/arm64/aarch64/g | sed s/amd64/x86_64/g).tar.gz | tar -xzf - -C /release/bin/ \ - && curl -L https://github.com/containerd/runwasi/releases/download/containerd-shim-wasmtime%2Fv0.3.0/containerd-shim-wasmtime-$(uname -m | sed s/arm64/aarch64/g | sed s/amd64/x86_64/g).tar.gz | tar -xzf - -C /release/bin/ \ - && curl -L https://github.com/containerd/runwasi/releases/download/containerd-shim-wasmer%2Fv0.3.0/containerd-shim-wasmer-$(uname -m | sed s/arm64/aarch64/g | sed s/amd64/x86_64/g).tar.gz | tar -xzf - -C /release/bin/ +COPY go.mod go.sum ./ +RUN go mod download -FROM ${CONTAINERD_RUNWASI} AS containerd_runwasi +COPY pkg ./pkg +COPY cmd ./cmd +COPY *.go ./ +COPY testdata ./testdata -FROM ubuntu:22.04 AS deislabs_containerd-wasm-shims +RUN go test ./... -RUN DEBIAN_FRONTEND=noninteractive apt-get update \ - && DEBIAN_FRONTEND=noninteractive apt-get install -y curl +RUN CGO_ENABLED=0 go build -o kwasm-node-installer +RUN /app/kwasm-node-installer -h -RUN mkdir /assets \ - && curl -L https://github.com/deislabs/containerd-wasm-shims/releases/download/v0.11.1/containerd-wasm-shims-v1-lunatic-linux-$(uname -m).tar.gz | tar -xzf - -C /assets \ - && curl -L https://github.com/deislabs/containerd-wasm-shims/releases/download/v0.11.1/containerd-wasm-shims-v1-slight-linux-$(uname -m).tar.gz | tar -xzf - -C /assets \ - && curl -L https://github.com/deislabs/containerd-wasm-shims/releases/download/v0.11.1/containerd-wasm-shims-v2-spin-linux-$(uname -m).tar.gz | tar -xzf - -C /assets \ - && curl -L https://github.com/deislabs/containerd-wasm-shims/releases/download/v0.11.1/containerd-wasm-shims-v1-wws-linux-$(uname -m).tar.gz | tar -xzf - -C /assets +FROM scratch +COPY --from=builder /app/kwasm-node-installer /kwasm-node-installer - -FROM busybox - -COPY script/installer.sh /script/installer.sh -COPY --link --from=deislabs_containerd-wasm-shims /assets /assets -COPY --link --from=containerd_runwasi /release/bin/containerd-shim-wasmedge-v1 /assets/ -COPY --link --from=containerd_runwasi /release/bin/containerd-shim-wasmer-v1 /assets/ -COPY --link --from=containerd_runwasi /release/bin/containerd-shim-wasmtime-v1 /assets/ -CMD sh /script/installer.sh wasmedge +ENTRYPOINT ["/kwasm-node-installer"] diff --git a/main.go b/main.go new file mode 100644 index 0000000..5bb240b --- /dev/null +++ b/main.go @@ -0,0 +1,23 @@ +/* + Copyright The KWasm 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 main + +import "github.com/kwasm/kwasm-node-installer/cmd" + +func main() { + cmd.Execute() +} diff --git a/pkg/containerd/configure.go b/pkg/containerd/configure.go new file mode 100644 index 0000000..99a6f56 --- /dev/null +++ b/pkg/containerd/configure.go @@ -0,0 +1,122 @@ +/* + Copyright The KWasm 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 containerd + +import ( + "fmt" + "log/slog" + "os" + "path" + "strings" + + "github.com/kwasm/kwasm-node-installer/pkg/shim" + "github.com/spf13/afero" +) + +type Restarter interface { + Restart() error +} + +type Config struct { + hostFs afero.Fs + configPath string + restarter Restarter +} + +func NewConfig(hostFs afero.Fs, configPath string, restarter Restarter) *Config { + return &Config{ + hostFs: hostFs, + configPath: configPath, + restarter: restarter, + } +} + +func (c *Config) AddRuntime(shimPath string) error { + runtimeName := shim.RuntimeName(path.Base(shimPath)) + l := slog.With("runtime", runtimeName) + + cfg := generateConfig(shimPath, runtimeName) + + // Containerd config file needs to exist, otherwise return the error + data, err := afero.ReadFile(c.hostFs, c.configPath) + if err != nil { + return err + } + + // Warn if config.toml already contains runtimeName + if strings.Contains(string(data), runtimeName) { + l.Info("runtime config already exists, skipping") + return nil + } + + // Open file in append mode + file, err := c.hostFs.OpenFile(c.configPath, os.O_APPEND|os.O_WRONLY, 0644) //nolint:gomnd // file permissions + if err != nil { + return err + } + defer file.Close() + + // Append config + _, err = file.WriteString(cfg) + if err != nil { + return err + } + + return nil +} + +func (c *Config) RemoveRuntime(shimPath string) (changed bool, err error) { + runtimeName := shim.RuntimeName(path.Base(shimPath)) + l := slog.With("runtime", runtimeName) + + cfg := generateConfig(shimPath, runtimeName) + + // Containerd config file needs to exist, otherwise return the error + data, err := afero.ReadFile(c.hostFs, c.configPath) + if err != nil { + return false, err + } + + // Warn if config.toml does not contain the runtimeName + if !strings.Contains(string(data), runtimeName) { + l.Warn("runtime config does not exist, skipping") + return false, nil + } + + // Convert the file data to a string and replace the target string with an empty string. + modifiedData := strings.ReplaceAll(string(data), cfg, "") + + // Write the modified data back to the file. + err = afero.WriteFile(c.hostFs, c.configPath, []byte(modifiedData), 0644) //nolint:gomnd // file permissions + if err != nil { + return false, err + } + + return true, nil +} + +func (c *Config) RestartRuntime() error { + return c.restarter.Restart() +} + +func generateConfig(shimPath string, runtimeName string) string { + return fmt.Sprintf(` +# KWASM runtime config for %s +[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.%s] +runtime_type = "%s" +`, runtimeName, runtimeName, shimPath) +} diff --git a/pkg/containerd/configure_test.go b/pkg/containerd/configure_test.go new file mode 100644 index 0000000..d0a1cff --- /dev/null +++ b/pkg/containerd/configure_test.go @@ -0,0 +1,203 @@ +/* + Copyright The KWasm 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 containerd //nolint:testpackage // whitebox test + +import ( + "testing" + + "github.com/kwasm/kwasm-node-installer/tests" + "github.com/spf13/afero" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +func TestConfig_AddRuntime(t *testing.T) { + type fields struct { + hostFs afero.Fs + configPath string + } + type args struct { + shimPath string + } + tests := []struct { + name string + fields fields + args args + wantErr bool + wantFileContent string + }{ + {"missing shim config", fields{ + hostFs: tests.FixtureFs("../../testdata/containerd/missing-containerd-shim-config"), + configPath: "/etc/containerd/config.toml", + }, args{"/opt/kwasm/bin/containerd-shim-spin-v1"}, false, `[plugins] + [plugins."io.containerd.monitor.v1.cgroups"] + no_prometheus = false + [plugins."io.containerd.service.v1.diff-service"] + default = ["walking"] + [plugins."io.containerd.gc.v1.scheduler"] + pause_threshold = 0.02 + deletion_threshold = 0 + mutation_threshold = 100 + schedule_delay = 0 + startup_delay = "100ms" + [plugins."io.containerd.runtime.v2.task"] + platforms = ["linux/amd64"] + sched_core = true + [plugins."io.containerd.service.v1.tasks-service"] + blockio_config_file = "" + rdt_config_file = "" + +# KWASM runtime config for spin-v1 +[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.spin-v1] +runtime_type = "/opt/kwasm/bin/containerd-shim-spin-v1" +`}, + {"missing config", fields{ + hostFs: tests.FixtureFs("../../testdata/containerd/missing-containerd-config"), + configPath: "/etc/containerd/config.toml", + }, args{"/opt/kwasm/bin/containerd-shim-spin-v1"}, true, ``}, + {"existing shim config", fields{ + hostFs: tests.FixtureFs("../../testdata/containerd/existing-containerd-shim-config"), + configPath: "/etc/containerd/config.toml", + }, args{"/opt/kwasm/bin/containerd-shim-spin-v1"}, false, `[plugins] + [plugins."io.containerd.monitor.v1.cgroups"] + no_prometheus = false + [plugins."io.containerd.service.v1.diff-service"] + default = ["walking"] + [plugins."io.containerd.gc.v1.scheduler"] + pause_threshold = 0.02 + deletion_threshold = 0 + mutation_threshold = 100 + schedule_delay = 0 + startup_delay = "100ms" + [plugins."io.containerd.runtime.v2.task"] + platforms = ["linux/amd64"] + sched_core = true + [plugins."io.containerd.service.v1.tasks-service"] + blockio_config_file = "" + rdt_config_file = "" + +# KWASM runtime config for spin-v1 +[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.spin-v1] +runtime_type = "/opt/kwasm/bin/containerd-shim-spin-v1" +`}, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + c := &Config{ + hostFs: tt.fields.hostFs, + configPath: tt.fields.configPath, + } + err := c.AddRuntime(tt.args.shimPath) + + if tt.wantErr { + require.Error(t, err) + return + } + + require.NoError(t, err) + + gotContent, err := afero.ReadFile(c.hostFs, c.configPath) + require.NoError(t, err) + + assert.Equal(t, tt.wantFileContent, string(gotContent)) + }) + } +} + +func TestConfig_RemoveRuntime(t *testing.T) { + type fields struct { + hostFs afero.Fs + configPath string + } + type args struct { + shimPath string + } + tests := []struct { + name string + fields fields + args args + wantErr bool + wantFileContent string + }{ + {"missing shim config", fields{ + hostFs: tests.FixtureFs("../../testdata/containerd/missing-containerd-shim-config"), + configPath: "/etc/containerd/config.toml", + }, args{"/opt/kwasm/bin/containerd-shim-spin-v1"}, false, `[plugins] + [plugins."io.containerd.monitor.v1.cgroups"] + no_prometheus = false + [plugins."io.containerd.service.v1.diff-service"] + default = ["walking"] + [plugins."io.containerd.gc.v1.scheduler"] + pause_threshold = 0.02 + deletion_threshold = 0 + mutation_threshold = 100 + schedule_delay = 0 + startup_delay = "100ms" + [plugins."io.containerd.runtime.v2.task"] + platforms = ["linux/amd64"] + sched_core = true + [plugins."io.containerd.service.v1.tasks-service"] + blockio_config_file = "" + rdt_config_file = "" +`}, + {"missing config", fields{ + hostFs: tests.FixtureFs("../../testdata/containerd/missing-containerd-config"), + configPath: "/etc/containerd/config.toml", + }, args{"/opt/kwasm/bin/containerd-shim-spin-v1"}, true, ``}, + {"existing shim config", fields{ + hostFs: tests.FixtureFs("../../testdata/containerd/existing-containerd-shim-config"), + configPath: "/etc/containerd/config.toml", + }, args{"/opt/kwasm/bin/containerd-shim-spin-v1"}, false, `[plugins] + [plugins."io.containerd.monitor.v1.cgroups"] + no_prometheus = false + [plugins."io.containerd.service.v1.diff-service"] + default = ["walking"] + [plugins."io.containerd.gc.v1.scheduler"] + pause_threshold = 0.02 + deletion_threshold = 0 + mutation_threshold = 100 + schedule_delay = 0 + startup_delay = "100ms" + [plugins."io.containerd.runtime.v2.task"] + platforms = ["linux/amd64"] + sched_core = true + [plugins."io.containerd.service.v1.tasks-service"] + blockio_config_file = "" + rdt_config_file = "" +`}, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + c := &Config{ + hostFs: tt.fields.hostFs, + configPath: tt.fields.configPath, + } + _, err := c.RemoveRuntime(tt.args.shimPath) + if tt.wantErr { + require.Error(t, err) + return + } + + require.NoError(t, err) + + gotContent, err := afero.ReadFile(c.hostFs, c.configPath) + require.NoError(t, err) + + assert.Equal(t, tt.wantFileContent, string(gotContent)) + }) + } +} diff --git a/pkg/containerd/restart_unix.go b/pkg/containerd/restart_unix.go new file mode 100644 index 0000000..9d3961a --- /dev/null +++ b/pkg/containerd/restart_unix.go @@ -0,0 +1,68 @@ +//go:build unix +// +build unix + +/* + Copyright The KWasm 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 containerd + +import ( + "fmt" + "log/slog" + "syscall" + + "github.com/mitchellh/go-ps" +) + +var psProcesses = ps.Processes + +type ContainerdRestarter struct{} + +func (c ContainerdRestarter) Restart() error { + pid, err := getPid() + if err != nil { + return err + } + slog.Debug("found containerd process", "pid", pid) + + err = syscall.Kill(pid, syscall.SIGHUP) + + if err != nil { + return fmt.Errorf("failed to send SIGHUP to containerd: %w", err) + } + return nil +} + +func getPid() (int, error) { + processes, err := psProcesses() + if err != nil { + return 0, fmt.Errorf("could not get processes: %w", err) + } + + var containerdProcesses = []ps.Process{} + + for _, process := range processes { + if process.Executable() == "containerd" { + containerdProcesses = append(containerdProcesses, process) + } + } + + if len(containerdProcesses) != 1 { + return 0, fmt.Errorf("need exactly one containerd process, found: %d", len(containerdProcesses)) + } + + return containerdProcesses[0].Pid(), nil +} diff --git a/pkg/containerd/restart_unix_test.go b/pkg/containerd/restart_unix_test.go new file mode 100644 index 0000000..866f684 --- /dev/null +++ b/pkg/containerd/restart_unix_test.go @@ -0,0 +1,71 @@ +//go:build unix +// +build unix + +package containerd //nolint:testpackage // whitebox test + +import ( + "fmt" + "testing" + + "github.com/mitchellh/go-ps" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +type mockProcess struct { + executable string + pid int +} + +func (p *mockProcess) Executable() string { + return p.executable +} + +func (p *mockProcess) Pid() int { + return p.pid +} + +func (p *mockProcess) PPid() int { + return 0 +} + +func Test_getPid(t *testing.T) { + tests := []struct { + name string + psProccessesMock func() ([]ps.Process, error) + want int + wantErr bool + }{ + {"no containerd process found", func() ([]ps.Process, error) { + return []ps.Process{}, nil + }, 0, true}, + {"single containerd process found", func() ([]ps.Process, error) { + return []ps.Process{ + &mockProcess{executable: "containerd", pid: 123}, + }, nil + }, 123, false}, + {"multiple containerd processes found", func() ([]ps.Process, error) { + return []ps.Process{ + &mockProcess{executable: "containerd", pid: 0}, + &mockProcess{executable: "containerd", pid: 0}, + }, nil + }, 0, true}, + {"error getting processes", func() ([]ps.Process, error) { + return nil, fmt.Errorf("error getting processes") + }, 0, true}, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + psProcesses = tt.psProccessesMock + got, err := getPid() + + if tt.wantErr { + require.Error(t, err) + } else { + require.NoError(t, err) + } + + assert.Equal(t, tt.want, got) + }) + } +} diff --git a/pkg/containerd/restart_windows.go b/pkg/containerd/restart_windows.go new file mode 100644 index 0000000..7018205 --- /dev/null +++ b/pkg/containerd/restart_windows.go @@ -0,0 +1,12 @@ +//go:build windows +// +build windows + +package containerd + +import "errors" + +type ContainerdRestarter struct{} + +func (r ContainerdRestarter) Restart() error { + return errors.New("restarting containerd not implemented") +} diff --git a/pkg/shim/install.go b/pkg/shim/install.go new file mode 100644 index 0000000..aed7bf4 --- /dev/null +++ b/pkg/shim/install.go @@ -0,0 +1,67 @@ +/* + Copyright The KWasm 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 shim + +import ( + "crypto/sha256" + "io" + "os" + "path" + "path/filepath" + + "github.com/kwasm/kwasm-node-installer/pkg/state" +) + +func (c *Config) Install(shimName string) (filePath string, changed bool, err error) { + shimPath := filepath.Join(c.assetPath, shimName) + srcFile, err := c.rootFs.OpenFile(shimPath, os.O_RDONLY, 0000) //nolint:gomnd // file permissions + if err != nil { + return "", false, err + } + dstFilePath := path.Join(c.kwasmPath, "bin", shimName) + + err = c.hostFs.MkdirAll(path.Dir(dstFilePath), 0775) //nolint:gomnd // file permissions + if err != nil { + return dstFilePath, false, err + } + + dstFile, err := c.hostFs.OpenFile(dstFilePath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0755) //nolint:gomnd // file permissions + if err != nil { + return "", false, err + } + + st, err := state.Get(c.hostFs, c.kwasmPath) + if err != nil { + return "", false, err + } + shimSha256 := sha256.New() + + _, err = io.Copy(io.MultiWriter(dstFile, shimSha256), srcFile) + runtimeName := RuntimeName(shimName) + changed = st.ShimChanged(runtimeName, shimSha256.Sum(nil), dstFilePath) + if changed { + st.UpdateShim(runtimeName, state.Shim{ + Path: dstFilePath, + Sha256: shimSha256.Sum(nil), + }) + if err := st.Write(); err != nil { + return "", false, err + } + } + + return dstFilePath, changed, err +} diff --git a/pkg/shim/install_test.go b/pkg/shim/install_test.go new file mode 100644 index 0000000..20375af --- /dev/null +++ b/pkg/shim/install_test.go @@ -0,0 +1,127 @@ +/* + Copyright The KWasm 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 shim //nolint:testpackage // whitebox test + +import ( + "testing" + + "github.com/kwasm/kwasm-node-installer/tests" + "github.com/spf13/afero" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +func TestConfig_Install(t *testing.T) { + type wants struct { + filepath string + changed bool + } + type fields struct { + rootFs afero.Fs + hostFs afero.Fs + assetPath string + kwasmPath string + } + type args struct { + shimName string + } + tests := []struct { + name string + fields fields + args args + want wants + wantErr bool + }{ + { + "no changes to shim", + fields{ + tests.FixtureFs("../../testdata"), + tests.FixtureFs("../../testdata/shim"), + "/assets", + "/opt/kwasm"}, + args{"containerd-shim-spin-v1"}, + wants{ + "/opt/kwasm/bin/containerd-shim-spin-v1", + false, + }, + false, + }, + { + "install new shim over old", + fields{ + tests.FixtureFs("../../testdata"), + tests.FixtureFs("../../testdata/shim"), + "/assets", + "/opt/kwasm"}, + args{"containerd-shim-slight-v1"}, + wants{ + "/opt/kwasm/bin/containerd-shim-slight-v1", + true, + }, + false, + }, + { + "unable to find new shim", + fields{ + afero.NewMemMapFs(), + tests.FixtureFs("../../testdata/shim"), + "/assets", + "/opt/kwasm"}, + args{"some-shim"}, + wants{ + "", + false, + }, + true, + }, + { + "unable to write to hostFs", + fields{ + tests.FixtureFs("../../testdata"), + afero.NewReadOnlyFs(tests.FixtureFs("../../testdata/shim")), + "/assets", + "/opt/kwasm"}, + args{"containerd-shim-spin-v1"}, + wants{ + "/opt/kwasm/bin/containerd-shim-spin-v1", + false, + }, + true, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + c := &Config{ + rootFs: tt.fields.rootFs, + hostFs: tt.fields.hostFs, + assetPath: tt.fields.assetPath, + kwasmPath: tt.fields.kwasmPath, + } + + filepath, changed, err := c.Install(tt.args.shimName) + + if tt.wantErr { + require.Error(t, err) + } else { + require.NoError(t, err) + } + + assert.Equal(t, tt.want.filepath, filepath) + assert.Equal(t, tt.want.changed, changed) + }) + } +} diff --git a/pkg/shim/shim.go b/pkg/shim/shim.go new file mode 100644 index 0000000..5666835 --- /dev/null +++ b/pkg/shim/shim.go @@ -0,0 +1,43 @@ +/* + Copyright The KWasm 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 shim + +import ( + "strings" + + "github.com/spf13/afero" +) + +type Config struct { + rootFs afero.Fs + hostFs afero.Fs + assetPath string + kwasmPath string +} + +func NewConfig(rootFs afero.Fs, hostFs afero.Fs, assetPath string, kwasmPath string) *Config { + return &Config{ + rootFs: rootFs, + hostFs: hostFs, + assetPath: assetPath, + kwasmPath: kwasmPath, + } +} + +func RuntimeName(bin string) string { + return strings.TrimPrefix(bin, "containerd-shim-") +} diff --git a/pkg/shim/uninstall.go b/pkg/shim/uninstall.go new file mode 100644 index 0000000..88d8e79 --- /dev/null +++ b/pkg/shim/uninstall.go @@ -0,0 +1,36 @@ +package shim + +import ( + "errors" + "log/slog" + "os" + + "github.com/kwasm/kwasm-node-installer/pkg/state" +) + +func (c *Config) Uninstall(shimName string) (string, error) { + st, err := state.Get(c.hostFs, c.kwasmPath) + if err != nil { + return "", err + } + s, ok := st.Shims[shimName] + if !ok { + slog.Warn("shim not installed", "shim", shimName) + return "", nil + } + filePath := s.Path + + err = c.hostFs.Remove(filePath) + if err != nil { + if !errors.Is(err, os.ErrNotExist) { + return "", err + } + slog.Warn("shim binary did not exist, nothing to delete") + } + + st.RemoveShim(shimName) + if err := st.Write(); err != nil { + return "", err + } + return filePath, err +} diff --git a/pkg/state/shim.go b/pkg/state/shim.go new file mode 100644 index 0000000..892c1d1 --- /dev/null +++ b/pkg/state/shim.go @@ -0,0 +1,38 @@ +package state + +import ( + "encoding/hex" + "encoding/json" +) + +type Shim struct { + Sha256 []byte + Path string +} + +func (s *Shim) MarshalJSON() ([]byte, error) { + return json.Marshal(&struct { + Sha256 string `json:"sha256"` + Path string `json:"path"` + }{ + Sha256: hex.EncodeToString(s.Sha256), + Path: s.Path, + }) +} + +func (s *Shim) UnmarshalJSON(data []byte) error { + var aux struct { + Sha256 string `json:"sha256"` + Path string `json:"path"` + } + if err := json.Unmarshal(data, &aux); err != nil { + return err + } + s.Path = aux.Path + sha256, err := hex.DecodeString(aux.Sha256) + if err != nil { + return err + } + s.Sha256 = sha256 + return nil +} diff --git a/pkg/state/shim_test.go b/pkg/state/shim_test.go new file mode 100644 index 0000000..b2b0c4f --- /dev/null +++ b/pkg/state/shim_test.go @@ -0,0 +1,110 @@ +package state //nolint:testpackage // whitebox test + +import ( + "testing" + + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +func TestShim_MarshalJSON(t *testing.T) { + type fields struct { + Sha256 []byte + Path string + } + tests := []struct { + name string + fields fields + want string + wantErr bool + }{ + { + "default", + fields{ + Sha256: []byte{109, 165, 232, 241, 122, 155, 250, 156, 176, 76, 242, 44, 135, 182, 71, 83, 148, 236, 236, 58, 244, 253, 195, 55, 247, 45, 109, 191, 51, 25, 234, 82}, + Path: "/opt/kwasm/bin/containerd-shim-spin-v1", + }, + `{"sha256":"6da5e8f17a9bfa9cb04cf22c87b6475394ecec3af4fdc337f72d6dbf3319ea52","path":"/opt/kwasm/bin/containerd-shim-spin-v1"}`, + false, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + s := &Shim{ + Sha256: tt.fields.Sha256, + Path: tt.fields.Path, + } + got, err := s.MarshalJSON() + if tt.wantErr { + require.Error(t, err) + } else { + require.NoError(t, err) + } + assert.Equal(t, tt.want, string(got)) + }) + } +} + +func TestShim_UnmarshalJSON(t *testing.T) { + type wants struct { + path string + sha256 []byte + } + type args struct { + data string + } + tests := []struct { + name string + args args + want wants + wantErr bool + }{ + { + "default", + args{ + `{"sha256":"6da5e8f17a9bfa9cb04cf22c87b6475394ecec3af4fdc337f72d6dbf3319ea52","path":"/opt/kwasm/bin/containerd-shim-spin-v1"}`, + }, + wants{ + path: "/opt/kwasm/bin/containerd-shim-spin-v1", + sha256: []byte{109, 165, 232, 241, 122, 155, 250, 156, 176, 76, 242, 44, 135, 182, 71, 83, 148, 236, 236, 58, 244, 253, 195, 55, 247, 45, 109, 191, 51, 25, 234, 82}, + }, + false, + }, + { + "broken sha", + args{ + `{"sha256":"2","path":"/opt/kwasm/bin/containerd-shim-spin-v1"}`, + }, + wants{ + path: "/opt/kwasm/bin/containerd-shim-spin-v1", + sha256: nil, + }, + true, + }, + { + "broken json", + args{ + `broken`, + }, + wants{ + path: "", + sha256: nil, + }, + true, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + var s Shim + err := s.UnmarshalJSON([]byte(tt.args.data)) + + if tt.wantErr { + require.Error(t, err) + } else { + require.NoError(t, err) + } + assert.Equal(t, tt.want.path, s.Path) + assert.Equal(t, tt.want.sha256, s.Sha256) + }) + } +} diff --git a/pkg/state/state.go b/pkg/state/state.go new file mode 100644 index 0000000..34113d3 --- /dev/null +++ b/pkg/state/state.go @@ -0,0 +1,64 @@ +package state + +import ( + "bytes" + "encoding/json" + "errors" + "log/slog" + "os" + "path/filepath" + + "github.com/spf13/afero" +) + +type State struct { + Shims map[string]*Shim `json:"shims"` + fs afero.Fs + lockFilePath string +} + +func Get(fs afero.Fs, kwasmPath string) (*State, error) { + out := State{ + Shims: make(map[string]*Shim), + lockFilePath: filepath.Join(kwasmPath, "kwasm-lock.json"), + fs: fs, + } + content, err := afero.ReadFile(fs, out.lockFilePath) + if err == nil { + err := json.Unmarshal(content, &out) + return &out, err + } + if !errors.Is(err, os.ErrNotExist) { + return nil, err + } + + return &out, nil +} + +func (l *State) ShimChanged(shimName string, sha256 []byte, path string) bool { + shim, ok := l.Shims[shimName] + if !ok { + return true + } + + return !bytes.Equal(shim.Sha256, sha256) || shim.Path != path +} + +func (l *State) UpdateShim(shimName string, shim Shim) { + l.Shims[shimName] = &shim +} + +func (l *State) RemoveShim(shimName string) { + delete(l.Shims, shimName) +} + +func (l *State) Write() error { + out, err := json.MarshalIndent(l, "", " ") + if err != nil { + return err + } + + slog.Debug("writing lock file", "content", string(out)) + + return afero.WriteFile(l.fs, l.lockFilePath, out, 0644) //nolint:gomnd // file permissions +} diff --git a/pkg/state/state_test.go b/pkg/state/state_test.go new file mode 100644 index 0000000..a34755b --- /dev/null +++ b/pkg/state/state_test.go @@ -0,0 +1,129 @@ +package state_test + +import ( + "testing" + + "github.com/kwasm/kwasm-node-installer/pkg/state" + "github.com/kwasm/kwasm-node-installer/tests" + "github.com/spf13/afero" + "github.com/stretchr/testify/assert" + "github.com/stretchr/testify/require" +) + +func TestGet(t *testing.T) { + type args struct { + fs afero.Fs + kwasmPath string + } + tests := []struct { + name string + args args + want *state.State + wantErr bool + }{ + { + "existing state", + args{ + tests.FixtureFs("../../testdata/containerd/existing-containerd-shim-config"), + "/opt/kwasm", + }, + &state.State{ + Shims: map[string]*state.Shim{ + "spin-v1": { + Sha256: []byte{109, 165, 232, 241, 122, 155, 250, 156, 176, 76, 242, 44, 135, 182, 71, 83, 148, 236, 236, 58, 244, 253, 195, 55, 247, 45, 109, 191, 51, 25, 234, 82}, + Path: "/opt/kwasm/bin/containerd-shim-spin-v1", + }, + }, + }, + false, + }, + { + "missing state", + args{ + tests.FixtureFs("../../testdata/containerd/missing-containerd-shim-config"), + "/opt/kwasm", + }, + &state.State{ + Shims: map[string]*state.Shim{}, + }, + false, + }, + } + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + got, err := state.Get(tt.args.fs, tt.args.kwasmPath) + if tt.wantErr { + require.Error(t, err) + } else { + require.NoError(t, err) + } + assert.Equal(t, tt.want.Shims, got.Shims) + }) + } +} + +func TestShimChanged(t *testing.T) { + type args struct { + shimName string + sha256 []byte + path string + } + state := &state.State{ + Shims: map[string]*state.Shim{ + "spin-v1": { + Sha256: []byte{109, 165, 232, 241, 122, 155, 250, 156, 176, 76, 242, 44, 135, 182, 71, 83, 148, 236, 236, 58, 244, 253, 195, 55, 247, 45, 109, 191, 51, 25, 234, 82}, + Path: "/opt/kwasm/bin/containerd-shim-spin-v1", + }, + }, + } + + tests := []struct { + name string + args args + want bool + }{ + { + "existing shim, same sha256 and path", + args{ + "spin-v1", + []byte{109, 165, 232, 241, 122, 155, 250, 156, 176, 76, 242, 44, 135, 182, 71, 83, 148, 236, 236, 58, 244, 253, 195, 55, 247, 45, 109, 191, 51, 25, 234, 82}, + "/opt/kwasm/bin/containerd-shim-spin-v1", + }, + false, + }, + { + "existing shim, different sha256", + args{ + "spin-v1", + []byte{109, 165, 232, 241, 122, 155, 250, 156, 176, 76, 242, 44, 135, 182, 71, 83, 148, 236, 236, 58, 244, 253, 195, 55, 247, 45, 109, 191, 51, 25, 234, 83}, + "/opt/kwasm/bin/containerd-shim-spin-v1", + }, + true, + }, + { + "existing shim, different path", + args{ + "spin-v1", + []byte{109, 165, 232, 241, 122, 155, 250, 156, 176, 76, 242, 44, 135, 182, 71, 83, 148, 236, 236, 58, 244, 253, 195, 55, 247, 45, 109, 191, 51, 25, 234, 82}, + "/opt/kwasm/bin/containerd-shim-spin-v2", + }, + true, + }, + { + "non-existing shim", + args{ + "non-existing", + []byte{109, 165, 232, 241, 122, 155, 250, 156, 176, 76, 242, 44, 135, 182, 71, 83, 148, 236, 236, 58, 244, 253, 195, 55, 247, 45, 109, 191, 51, 25, 234, 82}, + "/opt/kwasm/bin/containerd-shim-spin-v1", + }, + true, + }, + } + + for _, tt := range tests { + t.Run(tt.name, func(t *testing.T) { + changed := state.ShimChanged(tt.args.shimName, tt.args.sha256, tt.args.path) + assert.Equal(t, tt.want, changed) + }) + } +} diff --git a/testdata/assets/containerd-shim-slight-v1 b/testdata/assets/containerd-shim-slight-v1 new file mode 100644 index 0000000..9eca0fc --- /dev/null +++ b/testdata/assets/containerd-shim-slight-v1 @@ -0,0 +1,3 @@ +#!/usr/bin/env bash + +echo "hello from spin-v1" \ No newline at end of file diff --git a/testdata/assets/containerd-shim-spin-v1 b/testdata/assets/containerd-shim-spin-v1 new file mode 100644 index 0000000..2eea022 --- /dev/null +++ b/testdata/assets/containerd-shim-spin-v1 @@ -0,0 +1,3 @@ +#!/usr/bin/env sh + +echo "Hello from spin shim" \ No newline at end of file diff --git a/testdata/containerd/existing-containerd-shim-config/etc/containerd/config.toml b/testdata/containerd/existing-containerd-shim-config/etc/containerd/config.toml new file mode 100644 index 0000000..927d258 --- /dev/null +++ b/testdata/containerd/existing-containerd-shim-config/etc/containerd/config.toml @@ -0,0 +1,21 @@ +[plugins] + [plugins."io.containerd.monitor.v1.cgroups"] + no_prometheus = false + [plugins."io.containerd.service.v1.diff-service"] + default = ["walking"] + [plugins."io.containerd.gc.v1.scheduler"] + pause_threshold = 0.02 + deletion_threshold = 0 + mutation_threshold = 100 + schedule_delay = 0 + startup_delay = "100ms" + [plugins."io.containerd.runtime.v2.task"] + platforms = ["linux/amd64"] + sched_core = true + [plugins."io.containerd.service.v1.tasks-service"] + blockio_config_file = "" + rdt_config_file = "" + +# KWASM runtime config for spin-v1 +[plugins."io.containerd.grpc.v1.cri".containerd.runtimes.spin-v1] +runtime_type = "/opt/kwasm/bin/containerd-shim-spin-v1" diff --git a/testdata/containerd/existing-containerd-shim-config/opt/kwasm/bin/containerd-shim-spin-v1 b/testdata/containerd/existing-containerd-shim-config/opt/kwasm/bin/containerd-shim-spin-v1 new file mode 100644 index 0000000..2eea022 --- /dev/null +++ b/testdata/containerd/existing-containerd-shim-config/opt/kwasm/bin/containerd-shim-spin-v1 @@ -0,0 +1,3 @@ +#!/usr/bin/env sh + +echo "Hello from spin shim" \ No newline at end of file diff --git a/testdata/containerd/existing-containerd-shim-config/opt/kwasm/kwasm-lock.json b/testdata/containerd/existing-containerd-shim-config/opt/kwasm/kwasm-lock.json new file mode 100644 index 0000000..a9baf29 --- /dev/null +++ b/testdata/containerd/existing-containerd-shim-config/opt/kwasm/kwasm-lock.json @@ -0,0 +1,8 @@ +{ + "shims": { + "spin-v1": { + "sha256": "6da5e8f17a9bfa9cb04cf22c87b6475394ecec3af4fdc337f72d6dbf3319ea52", + "path": "/opt/kwasm/bin/containerd-shim-spin-v1" + } + } +} \ No newline at end of file diff --git a/testdata/containerd/missing-containerd-config/etc/containerd/.gitkeep b/testdata/containerd/missing-containerd-config/etc/containerd/.gitkeep new file mode 100644 index 0000000..e69de29 diff --git a/testdata/containerd/missing-containerd-shim-config/etc/containerd/config.toml b/testdata/containerd/missing-containerd-shim-config/etc/containerd/config.toml new file mode 100644 index 0000000..3389a42 --- /dev/null +++ b/testdata/containerd/missing-containerd-shim-config/etc/containerd/config.toml @@ -0,0 +1,17 @@ +[plugins] + [plugins."io.containerd.monitor.v1.cgroups"] + no_prometheus = false + [plugins."io.containerd.service.v1.diff-service"] + default = ["walking"] + [plugins."io.containerd.gc.v1.scheduler"] + pause_threshold = 0.02 + deletion_threshold = 0 + mutation_threshold = 100 + schedule_delay = 0 + startup_delay = "100ms" + [plugins."io.containerd.runtime.v2.task"] + platforms = ["linux/amd64"] + sched_core = true + [plugins."io.containerd.service.v1.tasks-service"] + blockio_config_file = "" + rdt_config_file = "" diff --git a/testdata/shim/opt/kwasm/bin/containerd-shim-spin-v1 b/testdata/shim/opt/kwasm/bin/containerd-shim-spin-v1 new file mode 100644 index 0000000..2eea022 --- /dev/null +++ b/testdata/shim/opt/kwasm/bin/containerd-shim-spin-v1 @@ -0,0 +1,3 @@ +#!/usr/bin/env sh + +echo "Hello from spin shim" \ No newline at end of file diff --git a/testdata/shim/opt/kwasm/kwasm-lock.json b/testdata/shim/opt/kwasm/kwasm-lock.json new file mode 100644 index 0000000..a9baf29 --- /dev/null +++ b/testdata/shim/opt/kwasm/kwasm-lock.json @@ -0,0 +1,8 @@ +{ + "shims": { + "spin-v1": { + "sha256": "6da5e8f17a9bfa9cb04cf22c87b6475394ecec3af4fdc337f72d6dbf3319ea52", + "path": "/opt/kwasm/bin/containerd-shim-spin-v1" + } + } +} \ No newline at end of file diff --git a/tests/fs.go b/tests/fs.go new file mode 100644 index 0000000..eb95876 --- /dev/null +++ b/tests/fs.go @@ -0,0 +1,11 @@ +package tests + +import ( + "github.com/spf13/afero" +) + +func FixtureFs(fixturePath string) afero.Fs { + baseFs := afero.NewBasePathFs(afero.NewOsFs(), fixturePath) + fs := afero.NewCopyOnWriteFs(baseFs, afero.NewMemMapFs()) + return fs +}