2022-04-03 04:07:16 +00:00
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package tfexec
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import (
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"context"
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"fmt"
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2023-03-20 20:25:53 +00:00
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"io"
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2022-04-03 04:07:16 +00:00
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"os/exec"
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"strconv"
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)
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type applyConfig struct {
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backup string
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dirOrPlan string
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lock bool
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// LockTimeout must be a string with time unit, e.g. '10s'
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lockTimeout string
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parallelism int
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reattachInfo ReattachInfo
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refresh bool
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replaceAddrs []string
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state string
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stateOut string
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targets []string
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// Vars: each var must be supplied as a single string, e.g. 'foo=bar'
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vars []string
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varFiles []string
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}
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var defaultApplyOptions = applyConfig{
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lock: true,
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parallelism: 10,
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refresh: true,
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}
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// ApplyOption represents options used in the Apply method.
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type ApplyOption interface {
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configureApply(*applyConfig)
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}
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func (opt *ParallelismOption) configureApply(conf *applyConfig) {
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conf.parallelism = opt.parallelism
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}
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func (opt *BackupOption) configureApply(conf *applyConfig) {
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conf.backup = opt.path
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}
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func (opt *TargetOption) configureApply(conf *applyConfig) {
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conf.targets = append(conf.targets, opt.target)
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}
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func (opt *LockTimeoutOption) configureApply(conf *applyConfig) {
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conf.lockTimeout = opt.timeout
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}
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func (opt *StateOption) configureApply(conf *applyConfig) {
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conf.state = opt.path
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}
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func (opt *StateOutOption) configureApply(conf *applyConfig) {
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conf.stateOut = opt.path
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}
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func (opt *VarFileOption) configureApply(conf *applyConfig) {
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conf.varFiles = append(conf.varFiles, opt.path)
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}
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func (opt *LockOption) configureApply(conf *applyConfig) {
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conf.lock = opt.lock
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}
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func (opt *RefreshOption) configureApply(conf *applyConfig) {
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conf.refresh = opt.refresh
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}
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func (opt *ReplaceOption) configureApply(conf *applyConfig) {
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conf.replaceAddrs = append(conf.replaceAddrs, opt.address)
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}
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func (opt *VarOption) configureApply(conf *applyConfig) {
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conf.vars = append(conf.vars, opt.assignment)
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}
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func (opt *DirOrPlanOption) configureApply(conf *applyConfig) {
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conf.dirOrPlan = opt.path
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}
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func (opt *ReattachOption) configureApply(conf *applyConfig) {
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conf.reattachInfo = opt.info
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}
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// Apply represents the terraform apply subcommand.
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func (tf *Terraform) Apply(ctx context.Context, opts ...ApplyOption) error {
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cmd, err := tf.applyCmd(ctx, opts...)
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if err != nil {
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return err
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}
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return tf.runTerraformCmd(ctx, cmd)
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}
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2023-03-20 20:25:53 +00:00
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// ApplyJSON represents the terraform apply subcommand with the `-json` flag.
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// Using the `-json` flag will result in
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// [machine-readable](https://developer.hashicorp.com/terraform/internals/machine-readable-ui)
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// JSON being written to the supplied `io.Writer`. ApplyJSON is likely to be
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// removed in a future major version in favour of Apply returning JSON by default.
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func (tf *Terraform) ApplyJSON(ctx context.Context, w io.Writer, opts ...ApplyOption) error {
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err := tf.compatible(ctx, tf0_15_3, nil)
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if err != nil {
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return fmt.Errorf("terraform apply -json was added in 0.15.3: %w", err)
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}
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tf.SetStdout(w)
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cmd, err := tf.applyJSONCmd(ctx, opts...)
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if err != nil {
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return err
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}
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return tf.runTerraformCmd(ctx, cmd)
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}
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2022-04-03 04:07:16 +00:00
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func (tf *Terraform) applyCmd(ctx context.Context, opts ...ApplyOption) (*exec.Cmd, error) {
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c := defaultApplyOptions
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for _, o := range opts {
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o.configureApply(&c)
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}
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2023-03-20 20:25:53 +00:00
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args, err := tf.buildApplyArgs(ctx, c)
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if err != nil {
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return nil, err
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}
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return tf.buildApplyCmd(ctx, c, args)
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}
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func (tf *Terraform) applyJSONCmd(ctx context.Context, opts ...ApplyOption) (*exec.Cmd, error) {
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c := defaultApplyOptions
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for _, o := range opts {
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o.configureApply(&c)
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}
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args, err := tf.buildApplyArgs(ctx, c)
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if err != nil {
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return nil, err
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}
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args = append(args, "-json")
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return tf.buildApplyCmd(ctx, c, args)
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}
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func (tf *Terraform) buildApplyArgs(ctx context.Context, c applyConfig) ([]string, error) {
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2022-04-03 04:07:16 +00:00
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args := []string{"apply", "-no-color", "-auto-approve", "-input=false"}
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// string opts: only pass if set
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if c.backup != "" {
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args = append(args, "-backup="+c.backup)
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}
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if c.lockTimeout != "" {
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args = append(args, "-lock-timeout="+c.lockTimeout)
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}
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if c.state != "" {
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args = append(args, "-state="+c.state)
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}
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if c.stateOut != "" {
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args = append(args, "-state-out="+c.stateOut)
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}
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for _, vf := range c.varFiles {
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args = append(args, "-var-file="+vf)
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}
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// boolean and numerical opts: always pass
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args = append(args, "-lock="+strconv.FormatBool(c.lock))
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args = append(args, "-parallelism="+fmt.Sprint(c.parallelism))
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args = append(args, "-refresh="+strconv.FormatBool(c.refresh))
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// string slice opts: split into separate args
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if c.replaceAddrs != nil {
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err := tf.compatible(ctx, tf0_15_2, nil)
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if err != nil {
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return nil, fmt.Errorf("replace option was introduced in Terraform 0.15.2: %w", err)
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}
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for _, addr := range c.replaceAddrs {
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args = append(args, "-replace="+addr)
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}
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}
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if c.targets != nil {
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for _, ta := range c.targets {
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args = append(args, "-target="+ta)
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}
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}
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if c.vars != nil {
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for _, v := range c.vars {
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args = append(args, "-var", v)
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}
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}
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2023-03-20 20:25:53 +00:00
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return args, nil
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}
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func (tf *Terraform) buildApplyCmd(ctx context.Context, c applyConfig, args []string) (*exec.Cmd, error) {
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2022-04-03 04:07:16 +00:00
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// string argument: pass if set
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if c.dirOrPlan != "" {
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args = append(args, c.dirOrPlan)
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}
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mergeEnv := map[string]string{}
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if c.reattachInfo != nil {
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reattachStr, err := c.reattachInfo.marshalString()
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if err != nil {
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return nil, err
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}
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mergeEnv[reattachEnvVar] = reattachStr
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}
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return tf.buildTerraformCmd(ctx, mergeEnv, args...), nil
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}
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