unkin-agent
78ba0011f9
Configure the arrstack Vault secrets engine (backend config + roles) from terraform-vault, matching the schema declared in terraform-vault #127. - Add terraform-plugin-framework provider (local name arrstack) authenticating to Vault/OpenBao via address + token (VAULT_ADDR/VAULT_TOKEN fallback). - Add arrstack_secret_backend resource: mounts the engine and writes <mount>/config. - Add arrstack_secret_backend_role resource: manages <mount>/roles/<name>. - Add Vault client, conversions, unit tests, Makefile, woodpecker CI + tag release to artifactapi terraform-unkin, examples, and README.
241 lines
8.1 KiB
Go
241 lines
8.1 KiB
Go
package provider
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import (
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"context"
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"fmt"
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"strings"
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"github.com/hashicorp/terraform-plugin-framework/path"
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"github.com/hashicorp/terraform-plugin-framework/resource"
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"github.com/hashicorp/terraform-plugin-framework/resource/schema"
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"github.com/hashicorp/terraform-plugin-framework/resource/schema/int64default"
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"github.com/hashicorp/terraform-plugin-framework/resource/schema/planmodifier"
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"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringdefault"
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"github.com/hashicorp/terraform-plugin-framework/resource/schema/stringplanmodifier"
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"github.com/hashicorp/terraform-plugin-framework/types"
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)
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var (
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_ resource.Resource = &secretBackendResource{}
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_ resource.ResourceWithImportState = &secretBackendResource{}
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)
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const defaultPluginType = "vault-plugin-secrets-arrstack"
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const defaultBaseURL = "https://arrstack.unkin.net"
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type secretBackendResource struct {
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client *vaultClient
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}
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type secretBackendModel struct {
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Path types.String `tfsdk:"path"`
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Plugin types.String `tfsdk:"plugin"`
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Description types.String `tfsdk:"description"`
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BaseURL types.String `tfsdk:"base_url"`
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AdminToken types.String `tfsdk:"admin_token"`
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CACert types.String `tfsdk:"ca_cert"`
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RequestTimeoutSeconds types.Int64 `tfsdk:"request_timeout_seconds"`
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}
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func NewSecretBackendResource() resource.Resource {
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return &secretBackendResource{}
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}
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func (r *secretBackendResource) Metadata(_ context.Context, req resource.MetadataRequest, resp *resource.MetadataResponse) {
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resp.TypeName = req.ProviderTypeName + "_secret_backend"
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}
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func (r *secretBackendResource) Schema(_ context.Context, _ resource.SchemaRequest, resp *resource.SchemaResponse) {
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resp.Schema = schema.Schema{
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Description: "Mounts the arrstack secrets engine and writes its connection config and seeded arrproxy admin token.",
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Attributes: map[string]schema.Attribute{
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"path": schema.StringAttribute{
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Description: "Mount path for the arrstack secrets engine (e.g. \"arrstack\").",
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Required: true,
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PlanModifiers: []planmodifier.String{
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stringplanmodifier.RequiresReplace(),
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},
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},
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"plugin": schema.StringAttribute{
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Description: "Registered plugin name/type to mount.",
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Optional: true,
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Computed: true,
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Default: stringdefault.StaticString(defaultPluginType),
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PlanModifiers: []planmodifier.String{
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stringplanmodifier.RequiresReplace(),
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},
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},
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"description": schema.StringAttribute{
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Description: "Human-readable description of the mount.",
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Optional: true,
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Computed: true,
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Default: stringdefault.StaticString(""),
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},
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"base_url": schema.StringAttribute{
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Description: "Base URL of the arrproxy front door (e.g. https://arrstack.unkin.net).",
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Optional: true,
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Computed: true,
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Default: stringdefault.StaticString(defaultBaseURL),
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},
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"admin_token": schema.StringAttribute{
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Description: "arrproxy admin token the engine authenticates with. Write-only; never read back.",
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Required: true,
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Sensitive: true,
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},
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"ca_cert": schema.StringAttribute{
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Description: "PEM CA certificate that signed the arrproxy server's TLS certificate (optional; omit to use the system trust store). Write-only; never read back.",
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Optional: true,
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Sensitive: true,
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},
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"request_timeout_seconds": schema.Int64Attribute{
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Description: "HTTP timeout in seconds for calls from the plugin to arrproxy.",
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Optional: true,
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Computed: true,
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Default: int64default.StaticInt64(30),
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},
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},
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}
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}
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func (r *secretBackendResource) Configure(_ context.Context, req resource.ConfigureRequest, resp *resource.ConfigureResponse) {
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if req.ProviderData == nil {
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return
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}
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client, ok := req.ProviderData.(*vaultClient)
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if !ok {
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resp.Diagnostics.AddError("unexpected provider data type", fmt.Sprintf("got %T", req.ProviderData))
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return
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}
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r.client = client
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}
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func (r *secretBackendResource) Create(ctx context.Context, req resource.CreateRequest, resp *resource.CreateResponse) {
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var plan secretBackendModel
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resp.Diagnostics.Append(req.Plan.Get(ctx, &plan)...)
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if resp.Diagnostics.HasError() {
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return
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}
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mountPath := strings.Trim(plan.Path.ValueString(), "/")
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err := r.client.enableMount(ctx, mountPath, plan.Plugin.ValueString(), plan.Description.ValueString(), mountConfig{})
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if err != nil {
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if isMountAlreadyExists(err) {
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resp.Diagnostics.AddError(
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"mount path already in use",
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fmt.Sprintf("A secrets engine is already mounted at %q. Import it or choose another path.", mountPath),
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)
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return
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}
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resp.Diagnostics.AddError("failed to enable arrstack secrets engine", err.Error())
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return
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}
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if err := r.client.write(ctx, configPath(mountPath), r.configData(plan)); err != nil {
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// Roll back the mount so we don't leave a half-configured engine.
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_ = r.client.disableMount(ctx, mountPath)
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resp.Diagnostics.AddError("failed to write arrstack config", err.Error())
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return
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}
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plan.Path = types.StringValue(mountPath)
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resp.Diagnostics.Append(resp.State.Set(ctx, plan)...)
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}
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func (r *secretBackendResource) Read(ctx context.Context, req resource.ReadRequest, resp *resource.ReadResponse) {
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var state secretBackendModel
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resp.Diagnostics.Append(req.State.Get(ctx, &state)...)
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if resp.Diagnostics.HasError() {
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return
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}
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mountPath := strings.Trim(state.Path.ValueString(), "/")
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mount, err := r.client.mountInfo(ctx, mountPath)
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if err != nil {
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resp.Diagnostics.AddError("failed to read mount", err.Error())
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return
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}
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if mount == nil {
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resp.State.RemoveResource(ctx)
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return
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}
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state.Description = types.StringValue(mount.Description)
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if mount.Type != "" {
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state.Plugin = types.StringValue(mount.Type)
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}
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cfg, err := r.client.read(ctx, configPath(mountPath))
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if err != nil {
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resp.Diagnostics.AddError("failed to read arrstack config", err.Error())
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return
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}
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if cfg != nil {
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if v, ok := cfg["base_url"].(string); ok {
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state.BaseURL = types.StringValue(v)
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}
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if n, ok := toInt64(cfg["request_timeout_seconds"]); ok {
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state.RequestTimeoutSeconds = types.Int64Value(n)
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}
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}
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// admin_token and ca_cert are never returned by the backend; preserve the
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// state values.
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resp.Diagnostics.Append(resp.State.Set(ctx, state)...)
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}
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func (r *secretBackendResource) Update(ctx context.Context, req resource.UpdateRequest, resp *resource.UpdateResponse) {
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var plan, state secretBackendModel
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resp.Diagnostics.Append(req.Plan.Get(ctx, &plan)...)
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resp.Diagnostics.Append(req.State.Get(ctx, &state)...)
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if resp.Diagnostics.HasError() {
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return
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}
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mountPath := strings.Trim(state.Path.ValueString(), "/")
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if !plan.Description.Equal(state.Description) {
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if err := r.client.tuneMount(ctx, mountPath, plan.Description.ValueString(), mountConfig{}); err != nil {
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resp.Diagnostics.AddError("failed to tune mount description", err.Error())
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return
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}
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}
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if err := r.client.write(ctx, configPath(mountPath), r.configData(plan)); err != nil {
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resp.Diagnostics.AddError("failed to update arrstack config", err.Error())
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return
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}
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plan.Path = types.StringValue(mountPath)
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resp.Diagnostics.Append(resp.State.Set(ctx, plan)...)
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}
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func (r *secretBackendResource) Delete(ctx context.Context, req resource.DeleteRequest, resp *resource.DeleteResponse) {
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var state secretBackendModel
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resp.Diagnostics.Append(req.State.Get(ctx, &state)...)
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if resp.Diagnostics.HasError() {
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return
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}
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if err := r.client.disableMount(ctx, strings.Trim(state.Path.ValueString(), "/")); err != nil {
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resp.Diagnostics.AddError("failed to disable arrstack secrets engine", err.Error())
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return
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}
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}
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func (r *secretBackendResource) ImportState(ctx context.Context, req resource.ImportStateRequest, resp *resource.ImportStateResponse) {
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resource.ImportStatePassthroughID(ctx, path.Root("path"), req, resp)
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}
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func (r *secretBackendResource) configData(m secretBackendModel) map[string]interface{} {
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data := map[string]interface{}{
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"base_url": m.BaseURL.ValueString(),
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"admin_token": m.AdminToken.ValueString(),
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"request_timeout_seconds": m.RequestTimeoutSeconds.ValueInt64(),
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}
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if !m.CACert.IsNull() && !m.CACert.IsUnknown() {
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data["ca_cert"] = m.CACert.ValueString()
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}
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return data
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}
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