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Application Packaging Standard

Last updated 18-Mar-2019

Assign DNS Services

Many applications must be integrated with the DNS services provided by the platform. Often, an application service requires some DNS records for proper functioning. Some services may require a domain zone with multiple DNS records.

In this scenario we will use a sample application whose resource model requires for every new virtual private server (VPS) to assign a domain zone and optionally a collection of DNS records in it.

Scenario

To reach the goal, use the customer credentials (token) to go through the following steps:

  1. Create a domain zone using the customer subscription.
  2. Create a VPS with a link to the domain zone.
  3. In the domain zone, create DNS records for the VPS.
  4. Bind the VPS with the DNS records.

Source Data

Collect the following data before you start provisioning application resources.

Note

A VPS must have relationship with the following resources whose APS IDs you must collect before provisioning a VPS:

  • APS ID of the management context that will be related with the VPS:

    GET /aps/2/resources?implementing(http://aps-standard.org/samples/dns1p/context/1.0)

    The response must contain only one resource of this type, since this is a singular resource in a subscription:

    HTTP/1.1 200 OK

[{"aps":{
    "id":"156608a4-d5bf-4497-85f1-74267930cd69",
    "subscription":"93959b89-365f-46e9-b838-8bb1f445cfa3",
...},...}]

  • APS ID of the subscription that allows creating VPSes - the previous response contains it in the aps.subscription property.

Preliminary Inspection

Before you start creating a new VPS, verify if there is a VPS with similar properties and if the respective resource usage did not reach its limit in the subscription.

  • Get a list of all VPSes created by the application:

    GET /aps/2/resources?implementing(http://aps-standard.org/samples/dns1p/vps/1.0)

  • Verify if there is a VPS with the name similar to the name of the new VPS:

    GET /aps/2/resources?implementing(http://aps-standard.org/samples/dns1p/vps/1.0),like(name,*VPS-1001*)

  • Verify if the vps resource usage did not reach the limit in the subscription. Use the subscription APS ID in the following request:

    GET /aps/2/resources/93959b89-365f-46e9-b838-8bb1f445cfa3/resources

    The following response shows that no VPSes out of 10 allowed are used:

    HTTP/1.1 200 OK

[
   {
     "id": "1000059",
     "title": "DNS - Virtual Server",
     "apsType": "http://aps-standard.org/samples/dns1p/vps/1.0",
     "usage": 0,
     "limit": 10,
     "unit": "unit"
   },
   {
     "id": "1000057",
     "title": "DNS - App REF",
     "apsId": "9c62ec36-1edf-4b23-b313-b5d5594a3fc6",
     "apsType": "http://aps-standard.org/samples/dns1p/cloud/1.0",
     "usage": 1,
     "limit": 1,
     "unit": "unit"
   },
   {
     "id": "1000058",
     "title": "DNS - Management Context",
     "apsId": "156608a4-d5bf-4497-85f1-74267930cd69",
     "apsType": "http://aps-standard.org/samples/dns1p/context/1.0",
     "usage": 1,
     "limit": 1,
     "autoprovisioning": true,
     "unit": "unit"
   }
]

  • Verify if there is no domain with the name you are going to use, for example:

    GET /aps/2/resources?implementing(http://parallels.com/aps/types/pa/dns/zone/1.1),eq(name,isv1.test)

Creating Resources

Create Domain Zone

Create a domain zone isv1.test by sending the following request with properties declared in the PAHostedDomain APS type:

POST /aps/2/resources
"APS-Subscription-ID": "93959b89-365f-46e9-b838-8bb1f445cfa3"

{
   "aps": {
      "type": "http://parallels.com/aps/types/pa/dns/zone/1.1"
   },
   "name": "isv1.test",
   "hosting": {
      "aps": {
         "link": "weak",
         "id": "93959b89-365f-46e9-b838-8bb1f445cfa3"
      }
   }
}

A typical response looks as follows:

HTTP/1.1 200 OK

{
  "aps": {
    "type": "http://parallels.com/aps/types/pa/dns/zone/1.1",
    "id": "21947ac1-6509-4629-95c3-62151fd65a9d",
    "status": "aps:ready",
    "revision": 4,
    "modified": "2016-10-03T10:15:11Z",
    "subscription": "93959b89-365f-46e9-b838-8bb1f445cfa3",
    "package": {
      "id": "e86ef200-5751-4c2c-b342-e65483ede6d0",
      "href": "/aps/2/packages/e86ef200-5751-4c2c-b342-e65483ede6d0"
    }
  },
  "hosts": [
      "857afca8-cc8e-4067-b3a2-5cbb9a8e3b22"
  ]
  "name": "isv1.test",
  "nameServers": [
      "a.isv1.apsdemo.org"
  ]
  "serviceDescription": "Domain subscription isv1.test",
  "serviceName": "Domains",
  "zone": {
    "TTL": 3600,
    "adminEmail": "isv1@aps.test",
    "expire": 2419200,
    "refresh": 14400,
    "retry": 7200
  },
  "zoneId": 1,
  "account": {
    "aps": {
      "link": "strong",
      "href": "/aps/2/resources/e489cb96-e988-475a-854b-0d0a67a18aed",
      "id": "e489cb96-e988-475a-854b-0d0a67a18aed"
    }
  },
  "hosting": {
      "aps": {
         "link": "weak",
         "href": "/aps/2/resources/93959b89-365f-46e9-b838-8bb1f445cfa3",
         "id": "93959b89-365f-46e9-b838-8bb1f445cfa3"
      }
  },
  "records": {
    "aps": {
      "link": "collection",
      "href": "/aps/2/resources/21947ac1-6509-4629-95c3-62151fd65a9d/records"
    }
  },
  "subdomains": {
    "aps": {
      "link": "collection",
      "href": "/aps/2/resources/21947ac1-6509-4629-95c3-62151fd65a9d/subdomains"
    }
  }
}

Notice the aps.id property that you will use in the next step.

Create Resource Linked to Domain Zone

A REST request for creating a new VPS must comply with the vps type investigated earlier. The most important is to specify the required links with the management context and the domain zone, as well as to specify the subscription APS ID in the APS-Subscription-ID header.

POST /aps/2/resources
"APS-Subscription-ID": "c315f4a9-1e00-4458-b3e9-95de5659b3d7"

{
    "aps":{
    "type":"http://aps-standard.org/samples/dns1p/vps/1.0"
    },
    "name":"VPS-1001",
    "state":"Stopped",
    "hardware":{
        "memory": 512,
        "diskspace": 64,
        "CPU":{
         "number": 2
        }
    },
    "platform":{
      "OS":{
          "name":"CentOS",
          "version": 7
        }
    },
   "context":{
      "aps":{
         "href":"aps/2/resources/156608a4-d5bf-4497-85f1-74267930cd69",
         "id":"156608a4-d5bf-4497-85f1-74267930cd69"
      }
   },
   "domain":{
      "aps":{
         "href":"aps/2/resources/21947ac1-6509-4629-95c3-62151fd65a9d",
         "id":"21947ac1-6509-4629-95c3-62151fd65a9d"
      }
   }
}

The response must look similar to:

HTTP/1.1 200 OK

{
  "aps": {
    "type": "http://aps-standard.org/samples/dns1p/vps/1.0",
    "id": "fb205cce-6874-4493-8e05-f404a16aa5b9",
    "status": "aps:ready",
    "revision": 3,
    "modified": "2016-10-03T11:20:59Z",
    "subscription": "93959b89-365f-46e9-b838-8bb1f445cfa3",
    "package": {
      "id": "57e39966-afab-4e5a-aeb4-703def4fd955",
      "href": "/aps/2/packages/57e39966-afab-4e5a-aeb4-703def4fd955"
    }
  },
  "hardware": {
    "CPU": {
      "number": 2
    },
    "diskspace": 64,
    "memory": 512
  },
  "name": "VPS-1001",
  "platform": {
    "OS": {
      "name": "CentOS",
      "version": "7"
    }
  },
  "state": "Stopped",
  "context": {
    "aps": {
      "link": "strong",
      "href": "/aps/2/resources/156608a4-d5bf-4497-85f1-74267930cd69",
      "id": "156608a4-d5bf-4497-85f1-74267930cd69",
      "subscription": "93959b89-365f-46e9-b838-8bb1f445cfa3"
    }
  },
  "domain": {
    "aps": {
      "link": "strong",
      "href": "/aps/2/resources/21947ac1-6509-4629-95c3-62151fd65a9d",
      "id": "21947ac1-6509-4629-95c3-62151fd65a9d",
      "subscription": "93959b89-365f-46e9-b838-8bb1f445cfa3"
    }
  },
  "records": {
    "aps": {
      "link": "collection",
      "href": "/aps/2/resources/fb205cce-6874-4493-8e05-f404a16aa5b9/records"
    }
  }
}

Create DNS Record

In the isv1.test domain zone, create an A record for the VPS:

POST /aps/2/resources
"APS-Subscription-ID": "93959b89-365f-46e9-b838-8bb1f445cfa3"

{
   "aps": {
      "type":"http://parallels.com/aps/types/pa/dns/record/a/1.0"
   },
   "zone": "isv1.test",
   "source": "vps1001.isv1.test.",
   "address" : "10.10.10.111"
}

A typical response looks as follows:

HTTP/1.1 200 OK

{
   "aps": {
      "type": "http://parallels.com/aps/types/pa/dns/record/a/1.0",
      "id": "d1d3800b-0f4f-48da-86a3-2244085cec5a",
      "status": "aps:ready",
      "revision": 4,
      "modified": "2016-10-03T11:22:24Z",
      "subscription": "93959b89-365f-46e9-b838-8bb1f445cfa3",
      "package": {
         "id": "e86ef200-5751-4c2c-b342-e65483ede6d0",
         "href": "/aps/2/packages/e86ef200-5751-4c2c-b342-e65483ede6d0"
      }
   },
   "RRState": "active",
   "TTL": 0,
   "address": "10.10.10.111",
   "data": "10.10.10.111",
   "recordId": 1,
   "source": "vps1001",
   "sourceFQN": "vps1001.isv1.test.",
   "replacedBy": {
      "aps": {
         "link": "collection",
         "href": "/aps/2/resources/d1d3800b-0f4f-48da-86a3-2244085cec5a/replacedBy"
      }
   },
   "replaces": {
      "aps": {
         "link": "collection",
         "href": "/aps/2/resources/d1d3800b-0f4f-48da-86a3-2244085cec5a/replaces"
      }
   },
   "zone": {
      "aps": {
         "link": "strong",
         "href": "/aps/2/resources/21947ac1-6509-4629-95c3-62151fd65a9d",
         "id": "21947ac1-6509-4629-95c3-62151fd65a9d",
         "subscription": "93959b89-365f-46e9-b838-8bb1f445cfa3"
      }
   }
}

Notice the aps.id property that you will use in the next step.

Conclusion

You have successfully created a resource and assigned to it two DNS resources: a domain zone and a DNS record. Similarly, you can create more resources.

Use the REST requests described in Preliminary Inspection to find the created resources.

On completion of this scenario, you have achieved the business goal.