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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,304 @@ | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // SPDX-FileCopyrightText: 2021-Present The Zarf Authors | ||
|
|
||
| // Package actions contains functions for running component actions within Zarf packages. | ||
| package actions | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "path/filepath" | ||
| "regexp" | ||
| "runtime" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/defenseunicorns/pkg/helpers/v2" | ||
| "github.com/zarf-dev/zarf/src/api/v1alpha1" | ||
| "github.com/zarf-dev/zarf/src/internal/packager/template" | ||
| "github.com/zarf-dev/zarf/src/pkg/message" | ||
| "github.com/zarf-dev/zarf/src/pkg/utils" | ||
| "github.com/zarf-dev/zarf/src/pkg/utils/exec" | ||
| "github.com/zarf-dev/zarf/src/pkg/variables" | ||
| ) | ||
|
|
||
| // Run runs all provided actions. | ||
| func Run(ctx context.Context, basePath string, defaultCfg v1alpha1.ZarfComponentActionDefaults, actions []v1alpha1.ZarfComponentAction, variableConfig *variables.VariableConfig) error { | ||
| if variableConfig == nil { | ||
| variableConfig = template.GetZarfVariableConfig(ctx) | ||
| } | ||
|
|
||
| for _, a := range actions { | ||
| if err := runAction(ctx, basePath, defaultCfg, a, variableConfig); err != nil { | ||
| return err | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // Run commands that a component has provided. | ||
| func runAction(ctx context.Context, basePath string, defaultCfg v1alpha1.ZarfComponentActionDefaults, action v1alpha1.ZarfComponentAction, variableConfig *variables.VariableConfig) error { | ||
| var ( | ||
| cmdEscaped string | ||
| out string | ||
| err error | ||
|
|
||
| cmd = action.Cmd | ||
| ) | ||
|
|
||
| // If the action is a wait, convert it to a command. | ||
| if action.Wait != nil { | ||
| // If the wait has no timeout, set a default of 5 minutes. | ||
| if action.MaxTotalSeconds == nil { | ||
| fiveMin := 300 | ||
| action.MaxTotalSeconds = &fiveMin | ||
| } | ||
|
|
||
| // Convert the wait to a command. | ||
| if cmd, err = convertWaitToCmd(ctx, *action.Wait, action.MaxTotalSeconds); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| // Mute the output because it will be noisy. | ||
| t := true | ||
| action.Mute = &t | ||
|
|
||
| // Set the max retries to 0. | ||
| z := 0 | ||
| action.MaxRetries = &z | ||
|
|
||
| // Not used for wait actions. | ||
| d := "" | ||
| action.Dir = &d | ||
| action.Env = []string{} | ||
| action.SetVariables = []v1alpha1.Variable{} | ||
| } | ||
|
|
||
| if action.Description != "" { | ||
| cmdEscaped = action.Description | ||
| } else { | ||
| cmdEscaped = helpers.Truncate(cmd, 60, false) | ||
| } | ||
|
|
||
| spinner := message.NewProgressSpinner("Running \"%s\"", cmdEscaped) | ||
| // Persist the spinner output so it doesn't get overwritten by the command output. | ||
| spinner.EnablePreserveWrites() | ||
|
|
||
| actionDefaults := actionGetCfg(ctx, defaultCfg, action, variableConfig.GetAllTemplates()) | ||
| actionDefaults.Dir = filepath.Join(basePath, actionDefaults.Dir) | ||
|
|
||
| if cmd, err = actionCmdMutation(ctx, cmd, actionDefaults.Shell); err != nil { | ||
| spinner.Errorf(err, "Error mutating command: %s", cmdEscaped) | ||
| } | ||
|
|
||
| duration := time.Duration(actionDefaults.MaxTotalSeconds) * time.Second | ||
| timeout := time.After(duration) | ||
|
|
||
| // Keep trying until the max retries is reached. | ||
| // TODO: Refactor using go-retry | ||
| retryCmd: | ||
| for remaining := actionDefaults.MaxRetries + 1; remaining > 0; remaining-- { | ||
| // Perform the action run. | ||
| tryCmd := func(ctx context.Context) error { | ||
| // Try running the command and continue the retry loop if it fails. | ||
| if out, err = actionRun(ctx, actionDefaults, cmd, actionDefaults.Shell, spinner); err != nil { | ||
| return err | ||
| } | ||
|
|
||
| out = strings.TrimSpace(out) | ||
|
|
||
| // If an output variable is defined, set it. | ||
| for _, v := range action.SetVariables { | ||
| variableConfig.SetVariable(v.Name, out, v.Sensitive, v.AutoIndent, v.Type) | ||
| if err := variableConfig.CheckVariablePattern(v.Name, v.Pattern); err != nil { | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| // If the action has a wait, change the spinner message to reflect that on success. | ||
| if action.Wait != nil { | ||
| spinner.Successf("Wait for \"%s\" succeeded", cmdEscaped) | ||
| } else { | ||
| spinner.Successf("Completed \"%s\"", cmdEscaped) | ||
| } | ||
|
|
||
| // If the command ran successfully, continue to the next action. | ||
| return nil | ||
| } | ||
|
|
||
| // If no timeout is set, run the command and return or continue retrying. | ||
| if actionDefaults.MaxTotalSeconds < 1 { | ||
| spinner.Updatef("Waiting for \"%s\" (no timeout)", cmdEscaped) | ||
| //TODO (schristoff): Make it so tryCmd can take a normal ctx | ||
| if err := tryCmd(context.Background()); err != nil { | ||
| continue retryCmd | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| // Run the command on repeat until success or timeout. | ||
| spinner.Updatef("Waiting for \"%s\" (timeout: %ds)", cmdEscaped, actionDefaults.MaxTotalSeconds) | ||
| select { | ||
| // On timeout break the loop to abort. | ||
| case <-timeout: | ||
| break retryCmd | ||
|
|
||
| // Otherwise, try running the command. | ||
| default: | ||
| ctx, cancel := context.WithTimeout(ctx, duration) | ||
| defer cancel() | ||
| if err := tryCmd(ctx); err != nil { | ||
| continue retryCmd | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
| } | ||
|
|
||
| select { | ||
| case <-timeout: | ||
| // If we reached this point, the timeout was reached or command failed with no retries. | ||
| if actionDefaults.MaxTotalSeconds < 1 { | ||
| return fmt.Errorf("command %q failed after %d retries", cmdEscaped, actionDefaults.MaxRetries) | ||
| } else { | ||
| return fmt.Errorf("command %q timed out after %d seconds", cmdEscaped, actionDefaults.MaxTotalSeconds) | ||
| } | ||
| default: | ||
| // If we reached this point, the retry limit was reached. | ||
| return fmt.Errorf("command %q failed after %d retries", cmdEscaped, actionDefaults.MaxRetries) | ||
| } | ||
| } | ||
|
|
||
| // convertWaitToCmd will return the wait command if it exists, otherwise it will return the original command. | ||
| func convertWaitToCmd(_ context.Context, wait v1alpha1.ZarfComponentActionWait, timeout *int) (string, error) { | ||
| // Build the timeout string. | ||
| timeoutString := fmt.Sprintf("--timeout %ds", *timeout) | ||
|
|
||
| // If the action has a wait, build a cmd from that instead. | ||
| cluster := wait.Cluster | ||
| if cluster != nil { | ||
| ns := cluster.Namespace | ||
| if ns != "" { | ||
| ns = fmt.Sprintf("-n %s", ns) | ||
| } | ||
|
|
||
| // Build a call to the zarf tools wait-for command. | ||
| return fmt.Sprintf("./zarf tools wait-for %s %s %s %s %s", | ||
| cluster.Kind, cluster.Name, cluster.Condition, ns, timeoutString), nil | ||
| } | ||
|
|
||
| network := wait.Network | ||
| if network != nil { | ||
| // Make sure the protocol is lower case. | ||
| network.Protocol = strings.ToLower(network.Protocol) | ||
|
|
||
| // If the protocol is http and no code is set, default to 200. | ||
| if strings.HasPrefix(network.Protocol, "http") && network.Code == 0 { | ||
| network.Code = 200 | ||
| } | ||
|
|
||
| // Build a call to the zarf tools wait-for command. | ||
| return fmt.Sprintf("./zarf tools wait-for %s %s %d %s", | ||
| network.Protocol, network.Address, network.Code, timeoutString), nil | ||
| } | ||
|
|
||
| return "", fmt.Errorf("wait action is missing a cluster or network") | ||
| } | ||
|
|
||
| // Perform some basic string mutations to make commands more useful. | ||
| func actionCmdMutation(_ context.Context, cmd string, shellPref v1alpha1.Shell) (string, error) { | ||
| zarfCommand, err := utils.GetFinalExecutableCommand() | ||
| if err != nil { | ||
| return cmd, err | ||
| } | ||
|
|
||
| // Try to patch the zarf binary path in case the name isn't exactly "./zarf". | ||
| cmd = strings.ReplaceAll(cmd, "./zarf ", zarfCommand+" ") | ||
|
|
||
| // Make commands 'more' compatible with Windows OS PowerShell | ||
| if runtime.GOOS == "windows" && (exec.IsPowershell(shellPref.Windows) || shellPref.Windows == "") { | ||
| // Replace "touch" with "New-Item" on Windows as it's a common command, but not POSIX so not aliased by M$. | ||
| // See https://mathieubuisson.github.io/powershell-linux-bash/ & | ||
| // http://web.cs.ucla.edu/~miryung/teaching/EE461L-Spring2012/labs/posix.html for more details. | ||
| cmd = regexp.MustCompile(`^touch `).ReplaceAllString(cmd, `New-Item `) | ||
|
|
||
| // Convert any ${ZARF_VAR_*} or $ZARF_VAR_* to ${env:ZARF_VAR_*} or $env:ZARF_VAR_* respectively (also TF_VAR_*). | ||
| // https://regex101.com/r/xk1rkw/1 | ||
| envVarRegex := regexp.MustCompile(`(?P<envIndicator>\${?(?P<varName>(ZARF|TF)_VAR_([a-zA-Z0-9_-])+)}?)`) | ||
| get, err := helpers.MatchRegex(envVarRegex, cmd) | ||
| if err == nil { | ||
| newCmd := strings.ReplaceAll(cmd, get("envIndicator"), fmt.Sprintf("$Env:%s", get("varName"))) | ||
| message.Debugf("Converted command \"%s\" to \"%s\" t", cmd, newCmd) | ||
| cmd = newCmd | ||
| } | ||
| } | ||
|
|
||
| return cmd, nil | ||
| } | ||
|
|
||
| // Merge the ActionSet defaults with the action config. | ||
| func actionGetCfg(_ context.Context, cfg v1alpha1.ZarfComponentActionDefaults, a v1alpha1.ZarfComponentAction, vars map[string]*variables.TextTemplate) v1alpha1.ZarfComponentActionDefaults { | ||
| if a.Mute != nil { | ||
| cfg.Mute = *a.Mute | ||
| } | ||
|
|
||
| // Default is no timeout, but add a timeout if one is provided. | ||
| if a.MaxTotalSeconds != nil { | ||
| cfg.MaxTotalSeconds = *a.MaxTotalSeconds | ||
| } | ||
|
|
||
| if a.MaxRetries != nil { | ||
| cfg.MaxRetries = *a.MaxRetries | ||
| } | ||
|
|
||
| if a.Dir != nil { | ||
| cfg.Dir = *a.Dir | ||
| } | ||
|
|
||
| if len(a.Env) > 0 { | ||
| cfg.Env = append(cfg.Env, a.Env...) | ||
| } | ||
|
|
||
| if a.Shell != nil { | ||
| cfg.Shell = *a.Shell | ||
| } | ||
|
|
||
| // Add variables to the environment. | ||
| for k, v := range vars { | ||
| // Remove # from env variable name. | ||
| k = strings.ReplaceAll(k, "#", "") | ||
| // Make terraform variables available to the action as TF_VAR_lowercase_name. | ||
| k1 := strings.ReplaceAll(strings.ToLower(k), "zarf_var", "TF_VAR") | ||
| cfg.Env = append(cfg.Env, fmt.Sprintf("%s=%s", k, v.Value)) | ||
| cfg.Env = append(cfg.Env, fmt.Sprintf("%s=%s", k1, v.Value)) | ||
| } | ||
|
|
||
| return cfg | ||
| } | ||
|
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| func actionRun(ctx context.Context, cfg v1alpha1.ZarfComponentActionDefaults, cmd string, shellPref v1alpha1.Shell, spinner *message.Spinner) (string, error) { | ||
| shell, shellArgs := exec.GetOSShell(shellPref) | ||
|
|
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| message.Debugf("Running command in %s: %s", shell, cmd) | ||
|
|
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| execCfg := exec.Config{ | ||
| Env: cfg.Env, | ||
| Dir: cfg.Dir, | ||
| } | ||
|
|
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| fmt.Println("exec cfg", execCfg.Dir) | ||
|
|
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| if !cfg.Mute { | ||
| execCfg.Stdout = spinner | ||
| execCfg.Stderr = spinner | ||
| } | ||
|
|
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| out, errOut, err := exec.CmdWithContext(ctx, execCfg, shell, append(shellArgs, cmd)...) | ||
| // Dump final complete output (respect mute to prevent sensitive values from hitting the logs). | ||
| if !cfg.Mute { | ||
| message.Debug(cmd, out, errOut) | ||
| } | ||
|
|
||
| return out, err | ||
| } |
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