feat(elb): import elb resource and add unit test and docs

docs/data-sources/lb_certificate.md

@@ -0,0 +1,46 @@
+---
+subcategory: "Elastic Load Balance (ELB)"
+---
+
+# flexibleengine_lb_certificate
+
+Use this data source to get the certificates in FlexibleEngine Elastic Load Balance (ELB).
+
+## Example Usage
+
+```hcl
+variable "certificate_name" {}
+
+data "flexibleengine_lb_certificate" "test" {
+  name = var.certificate_name
+  type = "server"
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `region` - (Optional, String) The region in which to obtain the ELB certificate. If omitted, the provider-level region
+  will be used.
+
+* `type` - (Optional, String) Specifies the certificate type. The default value is `server`. The value can be one of the
+  following:
+  + `server`: indicates the server certificate.
+  + `client`: indicates the CA certificate.
+
+* `name` - (Required, String) The name of certificate. The value is case sensitive and does not supports fuzzy matching.
+
+  -> **NOTE:** The certificate name is not unique. Only returns the last created one when matched multiple certificates.
+
+## Attribute Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `id` - The certificate ID in UUID format.
+
+* `domain` - The domain of the Certificate. This parameter is valid only when `type` is "server".
+
+* `description` - Human-readable description for the Certificate.
+
+* `expiration` - Indicates the time when the certificate expires.

docs/data-sources/lb_listeners.md

@@ -0,0 +1,72 @@
+---
+subcategory: "Elastic Load Balance (ELB)"
+---
+
+# flexibleengine_lb_listeners
+
+Use this data source to query the list of ELB listeners.
+
+## Example Usage
+
+```
+variable "protocol" {}
+
+data "flexibleengine_lb_listeners" "test" {
+  protocol  = var.protocol
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `region` - (Optional, String) Specifies the region in which to query the data source.
+  If omitted, the provider-level region will be used.
+
+* `name` - (Optional, String) The listener name.
+
+* `protocol` - (Optional, String) The listener protocol.  
+  The valid values are **TCP**, **UDP**, **HTTP** and **TERMINATED_HTTPS**.
+
+* `protocol_port` - (Optional, String) The front-end listening port of the listener.  
+  The valid value is range from `1` to `65535`.
+
+## Attribute Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `id` - The resource ID.
+
+* `listeners` - Listener list.
+The [object](#listeners_listeners) structure is documented below.
+
+<a name="listeners_listeners"></a>
+The `listeners` block supports:
+
+* `id` - The ELB listener ID.
+
+* `name` - The listener name.
+
+* `protocol` - The listener protocol.
+
+* `protocol_port` - The front-end listening port of the listener.
+
+* `default_pool_id` - The ID of the default pool with which the ELB listener is associated.
+
+* `description` - The description of the ELB listener.
+
+* `connection_limit` - The maximum number of connections allowed for the listener.
+
+* `http2_enable` - Whether the ELB listener uses HTTP/2.
+
+* `default_tls_container_ref` - The ID of the server certificate used by the listener.
+
+* `sni_container_refs` - List of the SNI certificate (server certificates with a domain name) IDs used by the listener.
+
+* `loadbalancers` - Listener list.
+The [object](#listeners_loadbalancers) structure is documented below.
+
+<a name="listeners_loadbalancers"></a>
+The `loadbalancers` block supports:
+
+* `id` - The ELB loadbalancer ID.

docs/resources/elb_logtank.md

@@ -0,0 +1,49 @@
+---
+subcategory: "Dedicated Load Balance (Dedicated ELB)"
+---
+
+# flexibleengine_elb_logtank
+
+Manage an ELB logtank resource within FlexibleEngine.
+
+## Example Usage
+
+```hcl
+variable "loadbalancer_id" {}
+variable "group_id" {}
+variable "topic_id" {}
+
+resource "flexibleengine_elb_logtank" "test" {
+  loadbalancer_id = var.loadbalancer_id
+  log_group_id    = var.group_id
+  log_topic_id    = var.topic_id
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `region` - (Optional, String, ForceNew) The region in which to create the logtank resource.
+  If omitted, the provider-level region will be used. Changing this creates a new logtank.
+
+* `loadbalancer_id` - (Required, String, ForceNew) Specifies the ID of a loadbalancer. Changing this
+  creates a new logtank
+
+* `log_group_id` - (Required, String) Specifies the ID of a log group. It is provided by other service.
+
+* `log_topic_id` - (Required, String) Specifies the ID of the subscribe topic.
+
+## Attribute Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `id` - The logtank ID.
+
+## Import
+
+ELB logtank can be imported using the logtank ID, e.g.
+
+```
+$ terraform import flexibleengine_elb_logtank.test 2f148a75-acd3-4ce7-8f63-d5c9fadab3a0
+```

flexibleengine/acceptance/data_source_flexibleengine_lb_certificate_test.go

@@ -0,0 +1,108 @@
+/*
+ Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
+*/
+
+package acceptance
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/acctest"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance"
+)
+
+func TestAccDataSourceLBCertificateV2_basic(t *testing.T) {
+	name := fmt.Sprintf("cert-%s", acctest.RandString(6))
+	dataSourceName := "data.flexibleengine_lb_certificate_v2.cert_1"
+	dc := acceptance.InitDataSourceCheck(dataSourceName)
+
+	resource.Test(t, resource.TestCase{
+		PreCheck:          func() { testAccPreCheck(t) },
+		ProviderFactories: TestAccProviderFactories,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccLBCertificateSourceV2_conf(name),
+				Check: resource.ComposeTestCheckFunc(
+					dc.CheckResourceExists(),
+					resource.TestCheckResourceAttr(dataSourceName, "name", name),
+					resource.TestCheckResourceAttr(dataSourceName, "type", "server"),
+					resource.TestCheckResourceAttrSet(dataSourceName, "domain"),
+					resource.TestCheckResourceAttrSet(dataSourceName, "description"),
+				),
+			},
+		},
+	})
+}
+
+func testAccLBCertificateSourceV2_conf(name string) string {
+	return fmt.Sprintf(`
+data "flexibleengine_lb_certificate_v2" "cert_1" {
+  name = flexibleengine_elb_certificate.certificate_1.name
+
+  depends_on = [flexibleengine_elb_certificate.certificate_1]
+}
+
+resource "flexibleengine_elb_certificate" "certificate_1" {
+  name        = "%s"
+  description = "terraform test certificate"
+  domain      = "www.elb.com"
+  type        = "server"
+  private_key = <<EOT
+-----BEGIN RSA PRIVATE KEY-----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+uvI34J4Rfot0LN3n7cFrAi2+wpNo+MOBwrNzpRmijGP2uKKrq4JiMjFbKV/6utGF
+Up7VxfwS904JYpqGaZctiIECgYA1A6nZtF0riY6ry/uAdXpZHL8ONNqRZtWoT0kD
+79otSVu5ISiRbaGcXsDExC52oKrSDAgFtbqQUiEOFg09UcXfoR6HwRkba2CiDwve
+yHQLQI5Qrdxz8Mk0gIrNrSM4FAmcW9vi9z4kCbQyoC5C+4gqeUlJRpDIkQBWP2Y4
+2ct/bQKBgHv8qCsQTZphOxc31BJPa2xVhuv18cEU3XLUrVfUZ/1f43JhLp7gynS2
+ep++LKUi9D0VGXY8bqvfJjbECoCeu85vl8NpCXwe/LoVoIn+7KaVIZMwqoGMfgNl
+nEqm7HWkNxHhf8A6En/IjleuddS1sf9e/x+TJN1Xhnt9W6pe7Fk1
+-----END RSA PRIVATE KEY-----
+EOT
+
+  certificate = <<EOT
+-----BEGIN CERTIFICATE-----
+MIIDpTCCAo2gAwIBAgIJAKdmmOBYnFvoMA0GCSqGSIb3DQEBCwUAMGkxCzAJBgNV
+BAYTAnh4MQswCQYDVQQIDAJ4eDELMAkGA1UEBwwCeHgxCzAJBgNVBAoMAnh4MQsw
+CQYDVQQLDAJ4eDELMAkGA1UEAwwCeHgxGTAXBgkqhkiG9w0BCQEWCnh4QDE2My5j
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+AQABo1AwTjAdBgNVHQ4EFgQUo5A2tIu+bcUfvGTD7wmEkhXKFjcwHwYDVR0jBBgw
+FoAUo5A2tIu+bcUfvGTD7wmEkhXKFjcwDAYDVR0TBAUwAwEB/zANBgkqhkiG9w0B
+AQsFAAOCAQEAWJ2rS6Mvlqk3GfEpboezx2J3X7l1z8Sxoqg6ntwB+rezvK3mc9H0
+83qcVeUcoH+0A0lSHyFN4FvRQL6X1hEheHarYwJK4agb231vb5erasuGO463eYEG
+r4SfTuOm7SyiV2xxbaBKrXJtpBp4WLL/s+LF+nklKjaOxkmxUX0sM4CTA7uFJypY
+c8Tdr8lDDNqoUtMD8BrUCJi+7lmMXRcC3Qi3oZJW76ja+kZA5mKVFPd1ATih8TbA
+i34R7EQDtFeiSvBdeKRsPp8c0KT8H1B4lXNkkCQs2WX5p4lm99+ZtLD4glw8x6Ic
+i1YhgnQbn5E0hz55OLu5jvOkKQjPCW+8Kg==
+-----END CERTIFICATE-----
+EOT
+}
+`, name)
+}