Archived
405 lines
14 KiB
Go
405 lines
14 KiB
Go
package provider
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import (
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"context"
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"errors"
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"fmt"
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"strconv"
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"strings"
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"github.com/hashicorp/terraform-plugin-framework-validators/int64validator"
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"github.com/hashicorp/terraform-plugin-framework-validators/stringvalidator"
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"github.com/hashicorp/terraform-plugin-framework/diag"
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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/schema/validator"
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"github.com/hashicorp/terraform-plugin-framework/types"
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"github.com/dynu/terraform-provider-dynu/internal/dynuclient"
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)
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var (
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_ resource.Resource = &dnsRecordResource{}
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_ resource.ResourceWithConfigure = &dnsRecordResource{}
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_ resource.ResourceWithImportState = &dnsRecordResource{}
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_ resource.ResourceWithValidateConfig = &dnsRecordResource{}
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)
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type dnsRecordResource struct {
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clientProvider *providerData
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}
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type dnsRecordResourceModel struct {
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ID types.String `tfsdk:"id"`
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Hostname types.String `tfsdk:"hostname"`
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RecordType types.String `tfsdk:"record_type"`
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Content types.String `tfsdk:"content"`
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TTL types.Int64 `tfsdk:"ttl"`
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State types.Bool `tfsdk:"state"`
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Group types.String `tfsdk:"group"`
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Host types.String `tfsdk:"host"`
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NodeName types.String `tfsdk:"node_name"`
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DomainID types.Int64 `tfsdk:"domain_id"`
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DomainName types.String `tfsdk:"domain_name"`
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UpdatedOn types.String `tfsdk:"updated_on"`
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}
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func NewDNSRecordResource() resource.Resource {
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return &dnsRecordResource{}
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}
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func (r *dnsRecordResource) Metadata(_ context.Context, req resource.MetadataRequest, resp *resource.MetadataResponse) {
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resp.TypeName = req.ProviderTypeName + "_dns_record"
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}
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func (r *dnsRecordResource) Schema(_ context.Context, _ resource.SchemaRequest, resp *resource.SchemaResponse) {
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resp.Schema = schema.Schema{
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Description: "Manages a Dynu DNS record for the root domain resolved from hostname.",
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Attributes: map[string]schema.Attribute{
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"id": schema.StringAttribute{Computed: true, Description: "Resource identifier in domain_id/record_id format."},
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"hostname": schema.StringAttribute{
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Required: true,
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Description: "Fully-qualified hostname under the target root domain.",
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Validators: []validator.String{
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stringvalidator.LengthAtLeast(1),
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stringvalidator.RegexMatches(hostnameValidator, "must be a valid fully-qualified hostname"),
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},
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},
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"record_type": schema.StringAttribute{Required: true, Description: "DNS record type (A, AAAA, CNAME, TXT, etc.).", Validators: []validator.String{stringvalidator.LengthAtLeast(1)}},
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"content": schema.StringAttribute{Optional: true, Description: "Record content/value."},
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"ttl": schema.Int64Attribute{
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Optional: true,
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Computed: true,
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Description: "DNS TTL in seconds.",
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Validators: []validator.Int64{int64validator.AtLeast(0)},
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},
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"state": schema.BoolAttribute{Optional: true, Computed: true, Description: "Whether this DNS record is active."},
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"group": schema.StringAttribute{Optional: true, Computed: true, Description: "Dynu group value for this record."},
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"host": schema.StringAttribute{Optional: true, Computed: true, Description: "Host field for supported Dynu record types."},
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"node_name": schema.StringAttribute{Optional: true, Computed: true, Description: "Node/label portion of the record."},
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"domain_id": schema.Int64Attribute{Computed: true, Description: "Dynu domain ID resolved from hostname."},
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"domain_name": schema.StringAttribute{Computed: true, Description: "Dynu root domain name resolved from hostname."},
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"updated_on": schema.StringAttribute{Computed: true, Description: "Last update timestamp as returned by Dynu."},
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},
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}
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}
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func (r *dnsRecordResource) 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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providerData, ok := req.ProviderData.(*providerData)
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if !ok {
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resp.Diagnostics.AddError("Unexpected resource configure type", fmt.Sprintf("Expected *providerData, got %T", req.ProviderData))
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return
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}
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r.clientProvider = providerData
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}
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func (r *dnsRecordResource) ValidateConfig(ctx context.Context, req resource.ValidateConfigRequest, resp *resource.ValidateConfigResponse) {
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var config dnsRecordResourceModel
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resp.Diagnostics.Append(req.Config.Get(ctx, &config)...)
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if resp.Diagnostics.HasError() {
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return
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}
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recordType, skip := knownNormalizedString(config.RecordType)
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if skip {
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return
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}
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if recordType == "A" || recordType == "AAAA" {
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return
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}
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if config.Content.IsUnknown() {
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return
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}
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if config.Content.IsNull() || strings.TrimSpace(config.Content.ValueString()) == "" {
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resp.Diagnostics.AddError(
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"Missing required content for DNS record type",
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fmt.Sprintf("The %q record type requires a non-empty content value. Set the content attribute or use A/AAAA when content should be omitted.", recordType),
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)
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}
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}
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func (r *dnsRecordResource) Create(ctx context.Context, req resource.CreateRequest, resp *resource.CreateResponse) {
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var plan dnsRecordResourceModel
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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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domainID, domainName, err := r.clientProvider.client.GetRootDomain(ctx, plan.Hostname.ValueString())
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if err != nil {
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resp.Diagnostics.AddError(diagnosticSummary("Unable to resolve Dynu domain from hostname", err), err.Error())
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return
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}
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createReq := dynuclient.CreateDNSRecordRequest{
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NodeName: recordNodeName(plan.NodeName, plan.Hostname, domainName),
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RecordType: strings.TrimSpace(plan.RecordType.ValueString()),
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Content: stringPointerFromOptional(plan.Content),
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TTL: int64FromOptional(plan.TTL),
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State: boolPointerFromOptional(plan.State),
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Group: stringFromOptional(plan.Group),
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Host: stringFromOptional(plan.Host),
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}
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if !validateDNSRecordContentForType(createReq.RecordType, createReq.Content, &resp.Diagnostics) {
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return
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}
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record, err := r.clientProvider.client.CreateDNSRecord(ctx, domainID, createReq)
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if err != nil {
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addDNSRecordWriteDiagnostic("create", createReq.RecordType, createReq.Content, err, &resp.Diagnostics)
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return
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}
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state := mapDNSRecordToState(*record)
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if plan.Content.IsNull() || plan.Content.IsUnknown() {
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state.Content = types.StringNull()
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}
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state.ID = types.StringValue(formatDNSRecordID(record.DomainID, record.ID))
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resp.Diagnostics.Append(resp.State.Set(ctx, &state)...)
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}
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func (r *dnsRecordResource) Read(ctx context.Context, req resource.ReadRequest, resp *resource.ReadResponse) {
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var state dnsRecordResourceModel
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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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domainID, recordID, err := parseDNSRecordID(state.ID.ValueString())
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if err != nil {
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resp.Diagnostics.AddError("Invalid resource ID", err.Error())
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return
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}
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record, err := r.clientProvider.client.GetDNSRecord(ctx, domainID, recordID)
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if err != nil {
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var apiErr *dynuclient.APIError
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if errors.As(err, &apiErr) && apiErr.StatusCode == 404 {
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resp.State.RemoveResource(ctx)
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return
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}
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resp.Diagnostics.AddError(diagnosticSummary("Unable to read Dynu DNS record", err), err.Error())
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return
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}
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nextState := mapDNSRecordToState(*record)
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if state.Content.IsNull() {
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nextState.Content = types.StringNull()
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}
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nextState.ID = state.ID
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resp.Diagnostics.Append(resp.State.Set(ctx, &nextState)...)
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}
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func (r *dnsRecordResource) Update(ctx context.Context, req resource.UpdateRequest, resp *resource.UpdateResponse) {
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var plan dnsRecordResourceModel
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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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domainID, recordID, err := parseDNSRecordID(plan.ID.ValueString())
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if err != nil {
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resp.Diagnostics.AddError("Invalid resource ID", err.Error())
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return
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}
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domainName := strings.TrimSpace(plan.DomainName.ValueString())
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if domainName == "" {
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_, resolvedDomainName, err := r.clientProvider.client.GetRootDomain(ctx, plan.Hostname.ValueString())
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if err != nil {
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resp.Diagnostics.AddError(diagnosticSummary("Unable to resolve Dynu domain from hostname", err), err.Error())
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return
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}
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domainName = resolvedDomainName
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}
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updateReq := dynuclient.UpdateDNSRecordRequest{
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NodeName: recordNodeName(plan.NodeName, plan.Hostname, domainName),
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RecordType: strings.TrimSpace(plan.RecordType.ValueString()),
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Content: stringPointerFromOptional(plan.Content),
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TTL: int64FromOptional(plan.TTL),
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State: boolPointerFromOptional(plan.State),
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Group: stringFromOptional(plan.Group),
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Host: stringFromOptional(plan.Host),
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}
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if !validateDNSRecordContentForType(updateReq.RecordType, updateReq.Content, &resp.Diagnostics) {
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return
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}
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if _, err := r.clientProvider.client.UpdateDNSRecord(ctx, domainID, recordID, updateReq); err != nil {
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addDNSRecordWriteDiagnostic("update", updateReq.RecordType, updateReq.Content, err, &resp.Diagnostics)
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return
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}
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record, err := r.clientProvider.client.GetDNSRecord(ctx, domainID, recordID)
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if err != nil {
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resp.Diagnostics.AddError(diagnosticSummary("Unable to read Dynu DNS record", err), err.Error())
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return
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}
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nextState := mapDNSRecordToState(*record)
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if plan.Content.IsNull() || plan.Content.IsUnknown() {
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nextState.Content = types.StringNull()
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}
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nextState.ID = types.StringValue(formatDNSRecordID(record.DomainID, record.ID))
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resp.Diagnostics.Append(resp.State.Set(ctx, &nextState)...)
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}
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func (r *dnsRecordResource) Delete(ctx context.Context, req resource.DeleteRequest, resp *resource.DeleteResponse) {
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var state dnsRecordResourceModel
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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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domainID, recordID, err := parseDNSRecordID(state.ID.ValueString())
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if err != nil {
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resp.Diagnostics.AddError("Invalid resource ID", err.Error())
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return
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}
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err = r.clientProvider.client.DeleteDNSRecord(ctx, domainID, recordID)
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if err == nil {
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return
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}
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var apiErr *dynuclient.APIError
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if errors.As(err, &apiErr) && apiErr.StatusCode == 404 {
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return
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}
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resp.Diagnostics.AddError(diagnosticSummary("Unable to delete Dynu DNS record", err), err.Error())
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}
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func (r *dnsRecordResource) ImportState(ctx context.Context, req resource.ImportStateRequest, resp *resource.ImportStateResponse) {
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domainID, recordID, err := parseDNSRecordID(req.ID)
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if err != nil {
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resp.Diagnostics.AddError("Invalid import ID", err.Error())
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return
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}
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state := dnsRecordResourceModel{ID: types.StringValue(formatDNSRecordID(domainID, recordID))}
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resp.Diagnostics.Append(resp.State.Set(ctx, &state)...)
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}
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func mapDNSRecordToState(record dynuclient.DNSRecord) dnsRecordResourceModel {
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return dnsRecordResourceModel{
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Hostname: mapString(record.Hostname),
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RecordType: mapString(record.RecordType),
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Content: mapString(record.Content),
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TTL: types.Int64Value(record.TTL),
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State: types.BoolValue(record.State),
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Group: mapString(record.Group),
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Host: mapString(record.Host),
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NodeName: mapString(record.NodeName),
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DomainID: types.Int64Value(record.DomainID),
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DomainName: mapString(record.DomainName),
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UpdatedOn: mapString(record.UpdatedOn),
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}
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}
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func parseDNSRecordID(id string) (int64, int64, error) {
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parts := strings.Split(strings.TrimSpace(id), "/")
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if len(parts) != 2 {
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return 0, 0, fmt.Errorf("expected import ID in domain_id/record_id format")
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}
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domainID, err := strconv.ParseInt(parts[0], 10, 64)
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if err != nil || domainID <= 0 {
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return 0, 0, fmt.Errorf("invalid domain_id in ID %q", id)
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}
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recordID, err := strconv.ParseInt(parts[1], 10, 64)
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if err != nil || recordID <= 0 {
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return 0, 0, fmt.Errorf("invalid record_id in ID %q", id)
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}
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return domainID, recordID, nil
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}
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func formatDNSRecordID(domainID int64, recordID int64) string {
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return fmt.Sprintf("%d/%d", domainID, recordID)
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}
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func recordNodeName(nodeName types.String, hostname types.String, domainName string) string {
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if !nodeName.IsNull() && !nodeName.IsUnknown() {
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return strings.TrimSpace(nodeName.ValueString())
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}
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host := strings.TrimSpace(hostname.ValueString())
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domain := strings.TrimSpace(domainName)
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if strings.EqualFold(host, domain) {
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return ""
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}
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suffix := "." + domain
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if strings.HasSuffix(strings.ToLower(host), strings.ToLower(suffix)) {
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return strings.TrimSuffix(host, suffix)
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}
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return host
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}
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func int64FromOptional(value types.Int64) int64 {
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if value.IsNull() || value.IsUnknown() {
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return 0
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}
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return value.ValueInt64()
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}
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func boolPointerFromOptional(value types.Bool) *bool {
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if value.IsNull() || value.IsUnknown() {
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return nil
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}
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v := value.ValueBool()
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return &v
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}
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func stringFromOptional(value types.String) string {
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if value.IsNull() || value.IsUnknown() {
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return ""
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}
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return strings.TrimSpace(value.ValueString())
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}
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func stringPointerFromOptional(value types.String) *string {
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if value.IsNull() || value.IsUnknown() {
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return nil
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}
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trimmed := strings.TrimSpace(value.ValueString())
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return &trimmed
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}
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func validateDNSRecordContentForType(recordType string, content *string, diagnostics *diag.Diagnostics) bool {
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normalizedType := strings.ToUpper(strings.TrimSpace(recordType))
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if normalizedType == "A" || normalizedType == "AAAA" {
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return true
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}
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if content == nil || strings.TrimSpace(*content) == "" {
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diagnostics.AddError(
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"Missing required content for DNS record type",
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fmt.Sprintf("The %q record type requires a non-empty content value. Set the content attribute or choose a type that supports omitted content (A/AAAA).", normalizedType),
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)
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return false
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}
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return true
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}
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func addDNSRecordWriteDiagnostic(operation string, recordType string, content *string, err error, diagnostics *diag.Diagnostics) {
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detail := err.Error()
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var apiErr *dynuclient.APIError
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if errors.As(err, &apiErr) {
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presence := "omitted"
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if content != nil {
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presence = fmt.Sprintf("set to %q", *content)
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}
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detail = fmt.Sprintf("%s. Dynu rejected this %s request for record type %q where content was %s.", err.Error(), operation, strings.ToUpper(strings.TrimSpace(recordType)), presence)
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}
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diagnostics.AddError(diagnosticSummary(fmt.Sprintf("Unable to %s Dynu DNS record", operation), err), detail)
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}
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func knownNormalizedString(value types.String) (string, bool) {
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if value.IsNull() || value.IsUnknown() {
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return "", true
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}
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return strings.ToUpper(strings.TrimSpace(value.ValueString())), false
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}
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