[WIP] Resource tagging (#1332)

* Ran scaffold

* Made a start on get_resources.

* Added more EC2 to tag list

* More stuff

* Added more methods

* Added S3 region name

* Added values test

* Some final touchups

moto/__init__.py

@@ -41,6 +41,7 @@ from .swf import mock_swf, mock_swf_deprecated  # flake8: noqa
 from .xray import mock_xray, mock_xray_client, XRaySegment  # flake8: noqa
 from .logs import mock_logs, mock_logs_deprecated # flake8: noqa
 from .batch import mock_batch  # flake8: noqa
+from .resourcegroupstaggingapi import mock_resourcegroupstaggingapi  # flake8: noqa
 from .iot import mock_iot  # flake8: noqa
 from .iotdata import mock_iotdata  # flake8: noqa
 

moto/backends.py

@@ -38,6 +38,7 @@ from moto.xray import xray_backends
 from moto.iot import iot_backends
 from moto.iotdata import iotdata_backends
 from moto.batch import batch_backends
+from moto.resourcegroupstaggingapi import resourcegroupstaggingapi_backends
 
 
 BACKENDS = {
@@ -78,6 +79,7 @@ BACKENDS = {
     'route53': route53_backends,
     'lambda': lambda_backends,
     'xray': xray_backends,
+    'resourcegroupstaggingapi': resourcegroupstaggingapi_backends,
     'iot': iot_backends,
     'iot-data': iotdata_backends,
 }

moto/resourcegroupstaggingapi/__init__.py

@@ -0,0 +1,6 @@
+from __future__ import unicode_literals
+from .models import resourcegroupstaggingapi_backends
+from ..core.models import base_decorator
+
+resourcegroupstaggingapi_backend = resourcegroupstaggingapi_backends['us-east-1']
+mock_resourcegroupstaggingapi = base_decorator(resourcegroupstaggingapi_backends)

moto/resourcegroupstaggingapi/models.py

@@ -0,0 +1,511 @@
+from __future__ import unicode_literals
+import uuid
+import boto3
+import six
+from moto.core import BaseBackend
+from moto.core.exceptions import RESTError
+
+from moto.s3 import s3_backends
+from moto.ec2 import ec2_backends
+from moto.elb import elb_backends
+from moto.elbv2 import elbv2_backends
+from moto.kinesis import kinesis_backends
+from moto.rds2 import rds2_backends
+from moto.glacier import glacier_backends
+from moto.redshift import redshift_backends
+from moto.emr import emr_backends
+
+# Left: EC2 ElastiCache RDS ELB CloudFront WorkSpaces Lambda EMR Glacier Kinesis Redshift Route53
+# StorageGateway DynamoDB MachineLearning ACM DirectConnect DirectoryService CloudHSM
+# Inspector Elasticsearch
+
+
+class ResourceGroupsTaggingAPIBackend(BaseBackend):
+    def __init__(self, region_name=None):
+        super(ResourceGroupsTaggingAPIBackend, self).__init__()
+        self.region_name = region_name
+
+        self._pages = {}
+        # Like 'someuuid': {'gen': <generator>, 'misc': None}
+        # Misc is there for peeking from a generator and it cant
+        # fit in the current request. As we only store generators
+        # theres not really any point to clean up
+
+    def reset(self):
+        region_name = self.region_name
+        self.__dict__ = {}
+        self.__init__(region_name)
+
+    @property
+    def s3_backend(self):
+        """
+        :rtype: moto.s3.models.S3Backend
+        """
+        return s3_backends['global']
+
+    @property
+    def ec2_backend(self):
+        """
+        :rtype: moto.ec2.models.EC2Backend
+        """
+        return ec2_backends[self.region_name]
+
+    @property
+    def elb_backend(self):
+        """
+        :rtype: moto.elb.models.ELBBackend
+        """
+        return elb_backends[self.region_name]
+
+    @property
+    def elbv2_backend(self):
+        """
+        :rtype: moto.elbv2.models.ELBv2Backend
+        """
+        return elbv2_backends[self.region_name]
+
+    @property
+    def kinesis_backend(self):
+        """
+        :rtype: moto.kinesis.models.KinesisBackend
+        """
+        return kinesis_backends[self.region_name]
+
+    @property
+    def rds_backend(self):
+        """
+        :rtype: moto.rds2.models.RDS2Backend
+        """
+        return rds2_backends[self.region_name]
+
+    @property
+    def glacier_backend(self):
+        """
+        :rtype: moto.glacier.models.GlacierBackend
+        """
+        return glacier_backends[self.region_name]
+
+    @property
+    def emr_backend(self):
+        """
+        :rtype: moto.emr.models.ElasticMapReduceBackend
+        """
+        return emr_backends[self.region_name]
+
+    @property
+    def redshift_backend(self):
+        """
+        :rtype: moto.redshift.models.RedshiftBackend
+        """
+        return redshift_backends[self.region_name]
+
+    def _get_resources_generator(self, tag_filters=None, resource_type_filters=None):
+        # Look at
+        # https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html
+
+        # TODO move these to their respective backends
+        filters = [lambda t, v: True]
+        for tag_filter_dict in tag_filters:
+            values = tag_filter_dict.get('Values', [])
+            if len(values) == 0:
+                # Check key matches
+                filters.append(lambda t, v: t == tag_filter_dict['Key'])
+            elif len(values) == 1:
+                # Check its exactly the same as key, value
+                filters.append(lambda t, v: t == tag_filter_dict['Key'] and v == values[0])
+            else:
+                # Check key matches and value is one of the provided values
+                filters.append(lambda t, v: t == tag_filter_dict['Key'] and v in values)
+
+        def tag_filter(tag_list):
+            result = []
+
+            for tag in tag_list:
+                temp_result = []
+                for f in filters:
+                    f_result = f(tag['Key'], tag['Value'])
+                    temp_result.append(f_result)
+                result.append(all(temp_result))
+
+            return any(result)
+
+        # Do S3, resource type s3
+        if not resource_type_filters or 's3' in resource_type_filters:
+            for bucket in self.s3_backend.buckets.values():
+                tags = []
+                for tag in bucket.tags.tag_set.tags:
+                    tags.append({'Key': tag.key, 'Value': tag.value})
+
+                if not tags or not tag_filter(tags):  # Skip if no tags, or invalid filter
+                    continue
+                yield {'ResourceARN': 'arn:aws:s3:::' + bucket.name, 'Tags': tags}
+
+        # EC2 tags
+        def get_ec2_tags(res_id):
+            result = []
+            for key, value in self.ec2_backend.tags.get(res_id, {}).items():
+                result.append({'Key': key, 'Value': value})
+            return result
+
+        # EC2 AMI, resource type ec2:image
+        if not resource_type_filters or 'ec2' in resource_type_filters or 'ec2:image' in resource_type_filters:
+            for ami in self.ec2_backend.amis.values():
+                tags = get_ec2_tags(ami.id)
+
+                if not tags or not tag_filter(tags):  # Skip if no tags, or invalid filter
+                    continue
+                yield {'ResourceARN': 'arn:aws:ec2:{0}::image/{1}'.format(self.region_name, ami.id), 'Tags': tags}
+
+        # EC2 Instance, resource type ec2:instance
+        if not resource_type_filters or 'ec2' in resource_type_filters or 'ec2:instance' in resource_type_filters:
+            for reservation in self.ec2_backend.reservations.values():
+                for instance in reservation.instances:
+                    tags = get_ec2_tags(instance.id)
+
+                    if not tags or not tag_filter(tags):  # Skip if no tags, or invalid filter
+                        continue
+                    yield {'ResourceARN': 'arn:aws:ec2:{0}::instance/{1}'.format(self.region_name, instance.id), 'Tags': tags}
+
+        # EC2 NetworkInterface, resource type ec2:network-interface
+        if not resource_type_filters or 'ec2' in resource_type_filters or 'ec2:network-interface' in resource_type_filters:
+            for eni in self.ec2_backend.enis.values():
+                tags = get_ec2_tags(eni.id)
+
+                if not tags or not tag_filter(tags):  # Skip if no tags, or invalid filter
+                    continue
+                yield {'ResourceARN': 'arn:aws:ec2:{0}::network-interface/{1}'.format(self.region_name, eni.id), 'Tags': tags}
+
+        # TODO EC2 ReservedInstance
+
+        # EC2 SecurityGroup, resource type ec2:security-group
+        if not resource_type_filters or 'ec2' in resource_type_filters or 'ec2:security-group' in resource_type_filters:
+            for vpc in self.ec2_backend.groups.values():
+                for sg in vpc.values():
+                    tags = get_ec2_tags(sg.id)
+
+                    if not tags or not tag_filter(tags):  # Skip if no tags, or invalid filter
+                        continue
+                    yield {'ResourceARN': 'arn:aws:ec2:{0}::security-group/{1}'.format(self.region_name, sg.id), 'Tags': tags}
+
+        # EC2 Snapshot, resource type ec2:snapshot
+        if not resource_type_filters or 'ec2' in resource_type_filters or 'ec2:snapshot' in resource_type_filters:
+            for snapshot in self.ec2_backend.snapshots.values():
+                tags = get_ec2_tags(snapshot.id)
+
+                if not tags or not tag_filter(tags):  # Skip if no tags, or invalid filter
+                    continue
+                yield {'ResourceARN': 'arn:aws:ec2:{0}::snapshot/{1}'.format(self.region_name, snapshot.id), 'Tags': tags}
+
+        # TODO EC2 SpotInstanceRequest
+
+        # EC2 Volume, resource type ec2:volume
+        if not resource_type_filters or 'ec2' in resource_type_filters or 'ec2:volume' in resource_type_filters:
+            for volume in self.ec2_backend.volumes.values():
+                tags = get_ec2_tags(volume.id)
+
+                if not tags or not tag_filter(tags):  # Skip if no tags, or invalid filter
+                    continue
+                yield {'ResourceARN': 'arn:aws:ec2:{0}::volume/{1}'.format(self.region_name, volume.id), 'Tags': tags}
+
+        # TODO add these to the keys and values functions / combine functions
+        # ELB
+
+        # EMR Cluster
+
+        # Glacier Vault
+
+        # Kinesis
+
+        # RDS Instance
+        # RDS Reserved Database Instance
+        # RDS Option Group
+        # RDS Parameter Group
+        # RDS Security Group
+        # RDS Snapshot
+        # RDS Subnet Group
+        # RDS Event Subscription
+
+        # RedShift Cluster
+        # RedShift Hardware security module (HSM) client certificate
+        # RedShift HSM connection
+        # RedShift Parameter group
+        # RedShift Snapshot
+        # RedShift Subnet group
+
+        # VPC
+        # VPC Customer Gateway
+        # VPC DHCP Option Set
+        # VPC Internet Gateway
+        # VPC Network ACL
+        # VPC Route Table
+        # VPC Subnet
+        # VPC Virtual Private Gateway
+        # VPC VPN Connection
+
+    def _get_tag_keys_generator(self):
+        # Look at
+        # https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html
+
+        # Do S3, resource type s3
+        for bucket in self.s3_backend.buckets.values():
+            for tag in bucket.tags.tag_set.tags:
+                yield tag.key
+
+        # EC2 tags
+        def get_ec2_keys(res_id):
+            result = []
+            for key in self.ec2_backend.tags.get(res_id, {}):
+                result.append(key)
+            return result
+
+        # EC2 AMI, resource type ec2:image
+        for ami in self.ec2_backend.amis.values():
+            for key in get_ec2_keys(ami.id):
+                yield key
+
+        # EC2 Instance, resource type ec2:instance
+        for reservation in self.ec2_backend.reservations.values():
+            for instance in reservation.instances:
+                for key in get_ec2_keys(instance.id):
+                    yield key
+
+        # EC2 NetworkInterface, resource type ec2:network-interface
+        for eni in self.ec2_backend.enis.values():
+            for key in get_ec2_keys(eni.id):
+                yield key
+
+        # TODO EC2 ReservedInstance
+
+        # EC2 SecurityGroup, resource type ec2:security-group
+        for vpc in self.ec2_backend.groups.values():
+            for sg in vpc.values():
+                for key in get_ec2_keys(sg.id):
+                    yield key
+
+        # EC2 Snapshot, resource type ec2:snapshot
+        for snapshot in self.ec2_backend.snapshots.values():
+            for key in get_ec2_keys(snapshot.id):
+                yield key
+
+        # TODO EC2 SpotInstanceRequest
+
+        # EC2 Volume, resource type ec2:volume
+        for volume in self.ec2_backend.volumes.values():
+            for key in get_ec2_keys(volume.id):
+                yield key
+
+    def _get_tag_values_generator(self, tag_key):
+        # Look at
+        # https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html
+
+        # Do S3, resource type s3
+        for bucket in self.s3_backend.buckets.values():
+            for tag in bucket.tags.tag_set.tags:
+                if tag.key == tag_key:
+                    yield tag.value
+
+        # EC2 tags
+        def get_ec2_values(res_id):
+            result = []
+            for key, value in self.ec2_backend.tags.get(res_id, {}).items():
+                if key == tag_key:
+                    result.append(value)
+            return result
+
+        # EC2 AMI, resource type ec2:image
+        for ami in self.ec2_backend.amis.values():
+            for value in get_ec2_values(ami.id):
+                yield value
+
+        # EC2 Instance, resource type ec2:instance
+        for reservation in self.ec2_backend.reservations.values():
+            for instance in reservation.instances:
+                for value in get_ec2_values(instance.id):
+                    yield value
+
+        # EC2 NetworkInterface, resource type ec2:network-interface
+        for eni in self.ec2_backend.enis.values():
+            for value in get_ec2_values(eni.id):
+                yield value
+
+        # TODO EC2 ReservedInstance
+
+        # EC2 SecurityGroup, resource type ec2:security-group
+        for vpc in self.ec2_backend.groups.values():
+            for sg in vpc.values():
+                for value in get_ec2_values(sg.id):
+                    yield value
+
+        # EC2 Snapshot, resource type ec2:snapshot
+        for snapshot in self.ec2_backend.snapshots.values():
+            for value in get_ec2_values(snapshot.id):
+                yield value
+
+        # TODO EC2 SpotInstanceRequest
+
+        # EC2 Volume, resource type ec2:volume
+        for volume in self.ec2_backend.volumes.values():
+            for value in get_ec2_values(volume.id):
+                yield value
+
+    def get_resources(self, pagination_token=None,
+                      resources_per_page=50, tags_per_page=100,
+                      tag_filters=None, resource_type_filters=None):
+        # Simple range checning
+        if 100 >= tags_per_page >= 500:
+            raise RESTError('InvalidParameterException', 'TagsPerPage must be between 100 and 500')
+        if 1 >= resources_per_page >= 50:
+            raise RESTError('InvalidParameterException', 'ResourcesPerPage must be between 1 and 50')
+
+        # If we have a token, go and find the respective generator, or error
+        if pagination_token:
+            if pagination_token not in self._pages:
+                raise RESTError('PaginationTokenExpiredException', 'Token does not exist')
+
+            generator = self._pages[pagination_token]['gen']
+            left_over = self._pages[pagination_token]['misc']
+        else:
+            generator = self._get_resources_generator(tag_filters=tag_filters,
+                                                      resource_type_filters=resource_type_filters)
+            left_over = None
+
+        result = []
+        current_tags = 0
+        current_resources = 0
+        if left_over:
+            result.append(left_over)
+            current_resources += 1
+            current_tags += len(left_over['Tags'])
+
+        try:
+            while True:
+                # Generator format: [{'ResourceARN': str, 'Tags': [{'Key': str, 'Value': str]}, ...]
+                next_item = six.next(generator)
+                resource_tags = len(next_item['Tags'])
+
+                if current_resources >= resources_per_page:
+                    break
+                if current_tags + resource_tags >= tags_per_page:
+                    break
+
+                current_resources += 1
+                current_tags += resource_tags
+
+                result.append(next_item)
+
+        except StopIteration:
+            # Finished generator before invalidating page limiting constraints
+            return None, result
+
+        # Didn't hit StopIteration so there's stuff left in generator
+        new_token = str(uuid.uuid4())
+        self._pages[new_token] = {'gen': generator, 'misc': next_item}
+
+        # Token used up, might as well bin now, if you call it again your an idiot
+        if pagination_token:
+            del self._pages[pagination_token]
+
+        return new_token, result
+
+    def get_tag_keys(self, pagination_token=None):
+
+        if pagination_token:
+            if pagination_token not in self._pages:
+                raise RESTError('PaginationTokenExpiredException', 'Token does not exist')
+
+            generator = self._pages[pagination_token]['gen']
+            left_over = self._pages[pagination_token]['misc']
+        else:
+            generator = self._get_tag_keys_generator()
+            left_over = None
+
+        result = []
+        current_tags = 0
+        if left_over:
+            result.append(left_over)
+            current_tags += 1
+
+        try:
+            while True:
+                # Generator format: ['tag', 'tag', 'tag', ...]
+                next_item = six.next(generator)
+
+                if current_tags + 1 >= 128:
+                    break
+
+                current_tags += 1
+
+                result.append(next_item)
+
+        except StopIteration:
+            # Finished generator before invalidating page limiting constraints
+            return None, result
+
+        # Didn't hit StopIteration so there's stuff left in generator
+        new_token = str(uuid.uuid4())
+        self._pages[new_token] = {'gen': generator, 'misc': next_item}
+
+        # Token used up, might as well bin now, if you call it again your an idiot
+        if pagination_token:
+            del self._pages[pagination_token]
+
+        return new_token, result
+
+    def get_tag_values(self, pagination_token, key):
+
+        if pagination_token:
+            if pagination_token not in self._pages:
+                raise RESTError('PaginationTokenExpiredException', 'Token does not exist')
+
+            generator = self._pages[pagination_token]['gen']
+            left_over = self._pages[pagination_token]['misc']
+        else:
+            generator = self._get_tag_values_generator(key)
+            left_over = None
+
+        result = []
+        current_tags = 0
+        if left_over:
+            result.append(left_over)
+            current_tags += 1
+
+        try:
+            while True:
+                # Generator format: ['value', 'value', 'value', ...]
+                next_item = six.next(generator)
+
+                if current_tags + 1 >= 128:
+                    break
+
+                current_tags += 1
+
+                result.append(next_item)
+
+        except StopIteration:
+            # Finished generator before invalidating page limiting constraints
+            return None, result
+
+        # Didn't hit StopIteration so there's stuff left in generator
+        new_token = str(uuid.uuid4())
+        self._pages[new_token] = {'gen': generator, 'misc': next_item}
+
+        # Token used up, might as well bin now, if you call it again your an idiot
+        if pagination_token:
+            del self._pages[pagination_token]
+
+        return new_token, result
+
+    # These methods will be called from responses.py.
+    # They should call a tag function inside of the moto module
+    # that governs the resource, that way if the target module
+    # changes how tags are delt with theres less to change
+
+    # def tag_resources(self, resource_arn_list, tags):
+    #     return failed_resources_map
+    #
+    # def untag_resources(self, resource_arn_list, tag_keys):
+    #     return failed_resources_map
+
+
+available_regions = boto3.session.Session().get_available_regions("resourcegroupstaggingapi")
+resourcegroupstaggingapi_backends = {region: ResourceGroupsTaggingAPIBackend(region) for region in available_regions}

moto/resourcegroupstaggingapi/responses.py

@@ -0,0 +1,97 @@
+from __future__ import unicode_literals
+from moto.core.responses import BaseResponse
+from .models import resourcegroupstaggingapi_backends
+import json
+
+
+class ResourceGroupsTaggingAPIResponse(BaseResponse):
+    SERVICE_NAME = 'resourcegroupstaggingapi'
+
+    @property
+    def backend(self):
+        """
+        Backend
+        :returns: Resource tagging api backend
+        :rtype: moto.resourcegroupstaggingapi.models.ResourceGroupsTaggingAPIBackend
+        """
+        return resourcegroupstaggingapi_backends[self.region]
+
+    def get_resources(self):
+        pagination_token = self._get_param("PaginationToken")
+        tag_filters = self._get_param("TagFilters", [])
+        resources_per_page = self._get_int_param("ResourcesPerPage", 50)
+        tags_per_page = self._get_int_param("TagsPerPage", 100)
+        resource_type_filters = self._get_param("ResourceTypeFilters", [])
+
+        pagination_token, resource_tag_mapping_list = self.backend.get_resources(
+            pagination_token=pagination_token,
+            tag_filters=tag_filters,
+            resources_per_page=resources_per_page,
+            tags_per_page=tags_per_page,
+            resource_type_filters=resource_type_filters,
+        )
+
+        # Format tag response
+        response = {
+            'ResourceTagMappingList': resource_tag_mapping_list
+        }
+        if pagination_token:
+            response['PaginationToken'] = pagination_token
+
+        return json.dumps(response)
+
+    def get_tag_keys(self):
+        pagination_token = self._get_param("PaginationToken")
+        pagination_token, tag_keys = self.backend.get_tag_keys(
+            pagination_token=pagination_token,
+        )
+
+        response = {
+            'TagKeys': tag_keys
+        }
+        if pagination_token:
+            response['PaginationToken'] = pagination_token
+
+        return json.dumps(response)
+
+    def get_tag_values(self):
+        pagination_token = self._get_param("PaginationToken")
+        key = self._get_param("Key")
+        pagination_token, tag_values = self.backend.get_tag_values(
+            pagination_token=pagination_token,
+            key=key,
+        )
+
+        response = {
+            'TagValues': tag_values
+        }
+        if pagination_token:
+            response['PaginationToken'] = pagination_token
+
+        return json.dumps(response)
+
+    # These methods are all thats left to be implemented
+    # the response is already set up, all thats needed is
+    # the respective model function to be implemented.
+    #
+    # def tag_resources(self):
+    #     resource_arn_list = self._get_list_prefix("ResourceARNList.member")
+    #     tags = self._get_param("Tags")
+    #     failed_resources_map = self.backend.tag_resources(
+    #         resource_arn_list=resource_arn_list,
+    #         tags=tags,
+    #     )
+    #
+    #     # failed_resources_map should be {'resource': {'ErrorCode': str, 'ErrorMessage': str, 'StatusCode': int}}
+    #     return json.dumps({'FailedResourcesMap': failed_resources_map})
+    #
+    # def untag_resources(self):
+    #     resource_arn_list = self._get_list_prefix("ResourceARNList.member")
+    #     tag_keys = self._get_list_prefix("TagKeys.member")
+    #     failed_resources_map = self.backend.untag_resources(
+    #         resource_arn_list=resource_arn_list,
+    #         tag_keys=tag_keys,
+    #     )
+    #
+    #     # failed_resources_map should be {'resource': {'ErrorCode': str, 'ErrorMessage': str, 'StatusCode': int}}
+    #     return json.dumps({'FailedResourcesMap': failed_resources_map})

moto/resourcegroupstaggingapi/urls.py

@@ -0,0 +1,10 @@
+from __future__ import unicode_literals
+from .responses import ResourceGroupsTaggingAPIResponse
+
+url_bases = [
+    "https?://tagging.(.+).amazonaws.com",
+]
+
+url_paths = {
+    '{0}/$': ResourceGroupsTaggingAPIResponse.dispatch,
+}

tests/test_resourcegroupstaggingapi/test_resourcegroupstaggingapi.py

@@ -0,0 +1,226 @@
+from __future__ import unicode_literals
+
+import boto3
+import sure  # noqa
+from moto import mock_resourcegroupstaggingapi, mock_s3, mock_ec2
+
+
+@mock_s3
+@mock_resourcegroupstaggingapi
+def test_get_resources_s3():
+    # Tests pagination
+    s3_client = boto3.client('s3', region_name='eu-central-1')
+
+    # Will end up having key1,key2,key3,key4
+    response_keys = set()
+
+    # Create 4 buckets
+    for i in range(1, 5):
+        i_str = str(i)
+        s3_client.create_bucket(Bucket='test_bucket' + i_str)
+        s3_client.put_bucket_tagging(
+            Bucket='test_bucket' + i_str,
+            Tagging={'TagSet': [{'Key': 'key' + i_str, 'Value': 'value' + i_str}]}
+        )
+        response_keys.add('key' + i_str)
+
+    rtapi = boto3.client('resourcegroupstaggingapi', region_name='eu-central-1')
+    resp = rtapi.get_resources(ResourcesPerPage=2)
+    for resource in resp['ResourceTagMappingList']:
+        response_keys.remove(resource['Tags'][0]['Key'])
+
+    response_keys.should.have.length_of(2)
+
+    resp = rtapi.get_resources(
+        ResourcesPerPage=2,
+        PaginationToken=resp['PaginationToken']
+    )
+    for resource in resp['ResourceTagMappingList']:
+        response_keys.remove(resource['Tags'][0]['Key'])
+
+    response_keys.should.have.length_of(0)
+
+
+@mock_ec2
+@mock_resourcegroupstaggingapi
+def test_get_resources_ec2():
+    client = boto3.client('ec2', region_name='eu-central-1')
+
+    instances = client.run_instances(
+        ImageId='ami-123',
+        MinCount=1,
+        MaxCount=1,
+        InstanceType='t2.micro',
+        TagSpecifications=[
+            {
+                'ResourceType': 'instance',
+                'Tags': [
+                    {
+                        'Key': 'MY_TAG1',
+                        'Value': 'MY_VALUE1',
+                    },
+                    {
+                        'Key': 'MY_TAG2',
+                        'Value': 'MY_VALUE2',
+                    },
+                ],
+            },
+            {
+                'ResourceType': 'instance',
+                'Tags': [
+                    {
+                        'Key': 'MY_TAG3',
+                        'Value': 'MY_VALUE3',
+                    },
+                ]
+            },
+        ],
+    )
+    instance_id = instances['Instances'][0]['InstanceId']
+    image_id = client.create_image(Name='testami', InstanceId=instance_id)['ImageId']
+
+    client.create_tags(
+        Resources=[image_id],
+        Tags=[{'Key': 'ami', 'Value': 'test'}]
+    )
+
+    rtapi = boto3.client('resourcegroupstaggingapi', region_name='eu-central-1')
+    resp = rtapi.get_resources()
+    # Check we have 1 entry for Instance, 1 Entry for AMI
+    resp['ResourceTagMappingList'].should.have.length_of(2)
+
+    # 1 Entry for AMI
+    resp = rtapi.get_resources(ResourceTypeFilters=['ec2:image'])
+    resp['ResourceTagMappingList'].should.have.length_of(1)
+    resp['ResourceTagMappingList'][0]['ResourceARN'].should.contain('image/')
+
+    # As were iterating the same data, this rules out that the test above was a fluke
+    resp = rtapi.get_resources(ResourceTypeFilters=['ec2:instance'])
+    resp['ResourceTagMappingList'].should.have.length_of(1)
+    resp['ResourceTagMappingList'][0]['ResourceARN'].should.contain('instance/')
+
+    # Basic test of tag filters
+    resp = rtapi.get_resources(TagFilters=[{'Key': 'MY_TAG1', 'Values': ['MY_VALUE1', 'some_other_value']}])
+    resp['ResourceTagMappingList'].should.have.length_of(1)
+    resp['ResourceTagMappingList'][0]['ResourceARN'].should.contain('instance/')
+
+
+@mock_ec2
+@mock_resourcegroupstaggingapi
+def test_get_tag_keys_ec2():
+    client = boto3.client('ec2', region_name='eu-central-1')
+
+    client.run_instances(
+        ImageId='ami-123',
+        MinCount=1,
+        MaxCount=1,
+        InstanceType='t2.micro',
+        TagSpecifications=[
+            {
+                'ResourceType': 'instance',
+                'Tags': [
+                    {
+                        'Key': 'MY_TAG1',
+                        'Value': 'MY_VALUE1',
+                    },
+                    {
+                        'Key': 'MY_TAG2',
+                        'Value': 'MY_VALUE2',
+                    },
+                ],
+            },
+            {
+                'ResourceType': 'instance',
+                'Tags': [
+                    {
+                        'Key': 'MY_TAG3',
+                        'Value': 'MY_VALUE3',
+                    },
+                ]
+            },
+        ],
+    )
+
+    rtapi = boto3.client('resourcegroupstaggingapi', region_name='eu-central-1')
+    resp = rtapi.get_tag_keys()
+
+    resp['TagKeys'].should.contain('MY_TAG1')
+    resp['TagKeys'].should.contain('MY_TAG2')
+    resp['TagKeys'].should.contain('MY_TAG3')
+
+    # TODO test pagenation
+
+
+@mock_ec2
+@mock_resourcegroupstaggingapi
+def test_get_tag_values_ec2():
+    client = boto3.client('ec2', region_name='eu-central-1')
+
+    client.run_instances(
+        ImageId='ami-123',
+        MinCount=1,
+        MaxCount=1,
+        InstanceType='t2.micro',
+        TagSpecifications=[
+            {
+                'ResourceType': 'instance',
+                'Tags': [
+                    {
+                        'Key': 'MY_TAG1',
+                        'Value': 'MY_VALUE1',
+                    },
+                    {
+                        'Key': 'MY_TAG2',
+                        'Value': 'MY_VALUE2',
+                    },
+                ],
+            },
+            {
+                'ResourceType': 'instance',
+                'Tags': [
+                    {
+                        'Key': 'MY_TAG3',
+                        'Value': 'MY_VALUE3',
+                    },
+                ]
+            },
+        ],
+    )
+    client.run_instances(
+        ImageId='ami-123',
+        MinCount=1,
+        MaxCount=1,
+        InstanceType='t2.micro',
+        TagSpecifications=[
+            {
+                'ResourceType': 'instance',
+                'Tags': [
+                    {
+                        'Key': 'MY_TAG1',
+                        'Value': 'MY_VALUE4',
+                    },
+                    {
+                        'Key': 'MY_TAG2',
+                        'Value': 'MY_VALUE5',
+                    },
+                ],
+            },
+            {
+                'ResourceType': 'instance',
+                'Tags': [
+                    {
+                        'Key': 'MY_TAG3',
+                        'Value': 'MY_VALUE6',
+                    },
+                ]
+            },
+        ],
+    )
+
+    rtapi = boto3.client('resourcegroupstaggingapi', region_name='eu-central-1')
+    resp = rtapi.get_tag_values(Key='MY_TAG1')
+
+    resp['TagValues'].should.contain('MY_VALUE1')
+    resp['TagValues'].should.contain('MY_VALUE4')
+
+    # TODO test pagenation

tests/test_resourcegroupstaggingapi/test_server.py

@@ -0,0 +1,24 @@
+from __future__ import unicode_literals
+
+import sure  # noqa
+
+import moto.server as server
+
+'''
+Test the different server responses
+'''
+
+
+def test_resourcegroupstaggingapi_list():
+    backend = server.create_backend_app("resourcegroupstaggingapi")
+    test_client = backend.test_client()
+    # do test
+
+    headers = {
+        'X-Amz-Target': 'ResourceGroupsTaggingAPI_20170126.GetResources',
+        'X-Amz-Date': '20171114T234623Z'
+    }
+    resp = test_client.post('/', headers=headers, data='{}')
+
+    assert resp.status_code == 200
+    assert b'ResourceTagMappingList' in resp.data