Release D doc update

Change-Id: I6b2749e5692cf6af2615ff5aff81ff060a1a25d3
Signed-off-by: zhipengh <huangzhipeng@huawei.com>

14 files changed, 1950 insertions, 0 deletions

diff --git a/docs/developer/design/examples/Simple_RNC.yaml b/docs/developer/design/examples/Simple_RNC.yaml
new file mode 100644
index 0000000..281b064
--- /dev/null
+++ b/docs/developer/design/examples/Simple_RNC.yaml
@@ -0,0 +1,457 @@
+##    Licensed under the Apache License, Version 2.0 (the "License"); you may
+##    not use this file except in compliance with the License. You may obtain
+##    a copy of the License at
+##
+##         http://www.apache.org/licenses/LICENSE-2.0
+##
+##    Unless required by applicable law or agreed to in writing, software
+##    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+##    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+##    License for the specific language governing permissions and limitations
+##    under the License.
+
+tosca_definitions_version: tosca_simple_profile_for_nfv_1_0_0
+
+metadata:
+  template_name: tosca_simple_profile_for_nfv_vRNC
+  template_author: opnfv_parser_project_from_zte
+  template_version: tosca_simple_profile_for_nfv_1_0
+
+# Optional description of the definitions inside the file.
+description: >
+  TOSCA simple profile for RNC
+    1. Compute Node MM, CM, DM, LB...
+      1.1 MM: MaintainModule;
+      1.2 CM: Control Module;
+      1.3 DM: Data Module;
+      1.4 LB: LineCard Module
+    2. Network Node VL and CP
+
+imports:
+  - Simple_RNC_definition.yaml
+
+# list of YAML alias anchors (or macros)
+dsl_definitions:
+  compute_props_os_DEF: &compute_props_os_DEF
+    architecture: x86_64
+    type: Linux
+    distribution: Ubuntu
+    version: 14.10
+
+  compute_props_host_MM: &compute_props_host_MM
+    disk_size: 80 GB
+    iops: 300
+    num_cpus: 8
+    mem_size: 8192 MB
+    swap: 512 MB
+
+  compute_props_host_CM: &compute_props_host_CM
+    disk_size: 0 GB
+    num_cpus: 8
+    mem_size: 8192 MB
+
+  compute_props_host_DM: &compute_props_host_DM
+    disk_size: 0 GB
+    num_cpus: 8
+    mem_size: 8192 MB
+
+  compute_props_host_LB: &compute_props_host_LB
+    disk_size: 0 GB
+    num_cpus: 4
+    mem_size: 8192 MB
+
+# topology template definition of the cloud application or service
+topology_template:
+  # a description of the topology template
+  description: >
+    simple RNC template
+
+  inputs:
+    mm_storage_size:
+      type: integer
+      default: 40 GB
+      description: mm additional block storage size
+      constraints:
+        - in_range: [ 1, 200 ]
+
+  substitution_mappings:
+    node_type: rnc.nodes.VNF
+    requirements:
+      virtualLink_VNFM: [ MM_Port_CTRL, virtualLink ]
+      virtualLink_EMS: [ MM_Port_EMS, virtualLink ]
+      virtualLink_TRAFFIC: [ LB_Port_EXTERMEDIA, virtualLink ]
+
+  # definition of the node templates of the topology
+  node_templates:
+    MM_Active:
+      type: rnc.nodes.compute.MM
+      properties:
+        activestatus: 1
+      capabilities:
+        os:
+          properties: *compute_props_os_DEF
+        host:
+          properties: *compute_props_host_MM
+      requirements:
+        - local_storage:
+            node: MM_BlockStorage
+            relationship: Storage_attachesto
+      artifacts:
+        #the VM image of MM
+        vm_image: mm.image
+      interfaces:
+        Standard:
+          create:
+            implementation: mm_install.sh
+          configure:
+            implementation: mm_active_configure.sh
+      attributes:
+        ip_address: { get_attribute: [ SELF, private_address ] }
+
+    MM_Passive:
+      type: rnc.nodes.compute.MM
+      properties:
+        activestatus: 0
+      capabilities:
+        os:
+          properties: *compute_props_os_DEF
+        host:
+          properties: *compute_props_host_MM
+      requirements:
+        - local_storage:
+            node: MM_BlockStorage
+            relationship: Storage_attachesto
+        - high_availability: MM_Active
+      artifacts:
+        #the VM image of MM
+        vm_image: mm.image
+      interfaces:
+        Standard:
+          create:
+            implementation: mm_install.sh
+          configure:
+            implementation: mm_passvie_configure.sh
+      attributes:
+        ip_address: { get_attribute: [ SELF, private_address ] }
+
+    CM_Active:
+      type: rnc.nodes.compute.CM
+      properties:
+        activestatus: 1
+      capabilities:
+        os:
+          properties: *compute_props_os_DEF
+        host:
+          properties: *compute_props_host_CM
+        scalable:
+          properties:
+            min_instances: 1
+            max_instances: 126
+            default_instances: 1
+      artifacts:
+        #the VM image of CM
+        vm_image: cm.image
+      interfaces:
+        Standard:
+          create:
+            implementation: cm_install.sh
+          configure:
+            implementation: cm_active_configure.sh
+      attributes:
+        ip_address: { get_attribute: [ SELF, private_address ] }
+
+    CM_Passive:
+      type: rnc.nodes.compute.CM
+      properties:
+        activestatus: 0
+      capabilities:
+        os:
+          properties: *compute_props_os_DEF
+        host:
+          properties: *compute_props_host_CM
+        scalable:
+          properties:
+            min_instances: 1
+            max_instances: 126
+            default_instances: 1
+      requirements:
+        - high_availability: CM_Active
+      artifacts:
+        #the VM image of CM
+        vm_image: mm.image
+      interfaces:
+        Standard:
+          create:
+            implementation: cm_install.sh
+          configure:
+            implementation: cm_passvie_configure.sh
+      attributes:
+        ip_address: { get_attribute: [ SELF, private_address ] }
+
+    DM:
+      type: rnc.nodes.compute.DM
+      capabilities:
+        os:
+          properties: *compute_props_os_DEF
+        host:
+          properties: *compute_props_host_DM
+        scalable:
+          properties:
+            min_instances: 1
+            max_instances: 120
+            default_instances: 1
+      artifacts:
+        vm_image: dm.image
+      interfaces:
+        Standard:
+          create:
+            implementation: dm_install.sh
+          configure:
+            implementation: dm_configure.sh
+      attributes:
+        ip_address: { get_attribute: [ SELF, private_address ] }
+
+    LB:
+      type: rnc.nodes.compute.LB
+      capabilities:
+        os:
+          properties: *compute_props_os_DEF
+        host:
+          properties: *compute_props_host_LB
+        scalable:
+          properties:
+            min_instances: 1
+            max_instances: 20
+            default_instances: 1
+      artifacts:
+        #the VM image of LB
+        vm_image: lb.image
+      interfaces:
+        Standard:
+          create:
+            implementation: lb_install.sh
+          configure:
+            implementation: lb_configure.sh
+      attributes:
+        ip_address: { get_attribute: [ SELF, private_address ] }
+
+    MM_BlockStorage:
+      type: rnc.nodes.BlockStorage
+      properties:
+        size: { get_input: mm_storage_size }
+      interfaces:
+        Configure:
+          post_configure_target:
+            implementation: default_script.sh
+
+    CTRL_Net:
+      type: rnc.nodes.VL
+      properties:
+        vendor: ZTE
+        cidr: "128.0.0.0/8"
+        network_name: Ctrl_Net
+        network_type: vlan
+        segmentation_id: 110
+        dhcp_enabled: false
+
+    INTERMEDIA_Net:
+      type: rnc.nodes.VL
+      properties:
+        vendor: ZTE
+        cidr: 10.0.0.0/8
+        start_ip: 10.1.0.1
+        end_ip: 10.1.2.254
+        network_name: InterMedia_Net
+        network_type: vlan
+        segmentation_id: 111
+        dhcp_enabled: false
+
+    EXTERMEDIA_Net:
+      type: rnc.nodes.VL
+      properties:
+        vendor: ZTE
+        cidr: 172.1.0.0/16
+        start_ip: 172.1.0.2
+        end_ip: 172.1.2.254
+        gateway_ip: 172.1.0.1
+        network_name: ExterMdedia_Net
+        network_type: vlan
+        segmentation_id: 100
+        dhcp_enabled: false
+
+    EMS_Net:
+      type: rnc.nodes.VL
+      properties:
+        vendor: ZTE
+        cidr: 129.0.0.0/24
+        start_ip: 129.0.0.2
+        end_ip: 129.0.0.64
+        gateway_ip: 129.0.0.1
+        network_name: Ems_Net
+        network_type: vlan
+        segmentation_id: 101
+        dhcp_enabled: false
+
+    MM_Port_EMS:
+      type: rnc.nodes.CP
+      properties:
+        order: 0
+        is_default: true
+      requirements:
+        - virtualBinding: MM_Active
+        - virtualLink: EMS_Net
+
+    MM_Port_CTRL:
+      type: rnc.nodes.CP
+      properties:
+        order: 1
+        is_default: false
+      requirements:
+        - virtualBinding: MM_Active
+        - virtualLink: CTRL_Net
+
+    MM_Port_EXTERMEDIA:
+      type: rnc.nodes.CP
+      properties:
+        order: 2
+        is_default: false
+      requirements:
+        - virtualBinding: MM_Active
+        - virtualLink: EXTERMEDIA_Net
+
+    CM_Port_CTRL:
+      type: rnc.nodes.CP
+      properties:
+        order: 0
+        is_default: true
+      requirements:
+        - virtualBinding: CM_Active
+        - virtualLink: CTRL_Net
+
+    CM_Port_INTERMEDIA:
+      type: rnc.nodes.CP
+      properties:
+        order: 1
+        is_default: false
+      requirements:
+        - virtualBinding: CM_Active
+        - virtualLink: INTERMEDIA_Net
+
+    DM_Port_CTRL:
+      type: rnc.nodes.CP
+      properties:
+        order: 0
+        is_default: true
+      requirements:
+        - virtualBinding: DM
+        - virtualLink: CTRL_Net
+
+    DM_Port_INTERMEDIA:
+      type: rnc.nodes.CP
+      properties:
+        order: 1
+        is_default: false
+      requirements:
+        - virtualBinding: DM
+        - virtualLink: INTERMEDIA_Net
+
+    LB_Port_CTRL:
+      type: rnc.nodes.CP
+      properties:
+        order: 0
+        is_default: true
+      requirements:
+        - virtualBinding: LB
+        - virtualLink: CTRL_Net
+
+    LB_Port_INTERMEDIA:
+      type: rnc.nodes.CP
+      properties:
+        order: 1
+        is_default: false
+      requirements:
+        - virtualBinding: LB
+        - virtualLink: INTERMEDIA_Net
+
+    LB_Port_EXTERMEDIA:
+      type: rnc.nodes.CP
+      properties:
+        order: 2
+        is_default: false
+      requirements:
+        - virtualBinding: LB
+        - virtualLink: EXTERMEDIA_Net
+
+  # definition of the relationship templates of the topology
+  relationship_templates:
+    Storage_attachesto:
+      type: tosca.relationships.AttachesTo
+      properties:
+        location: /data_location
+
+  # definition of output parameters for the topology template
+  outputs:
+    private_ip_of_MM:
+      description: The private IP address of the MM.
+      value: { get_attribute: [ MM_Active, private_address ] }
+
+    private_ip_of_CM:
+      description: The private IP address of the CM.
+      value: { get_attribute: [ CM_Active, private_address ] }
+
+    private_ip_of_DM:
+      description: The private IP address of the DM.
+      value: { get_attribute: [ DM, private_address ] }
+
+    private_ip_of_LB:
+      description: The private IP address of the LB.
+      value: { get_attribute: [ LB, private_address ] }
+
+  # definition of logical groups of node templates within the topology
+  # To be continue about this section
+  groups:
+    AnitAffinityServerGroup:
+      type: tosca.groups.Root
+      description: >
+         Logical component grouping for anti affinity placement,
+         MM_Acitve, MM_Passive, CM_Acitve, CM_Passive, LB must host
+         on different host to reduce the impact to each other.
+      members: [ MM_Active, MM_Passive, CM_Active, CM_Passive, LB ]
+      policies:
+        type: tosca.policy.placement.Antilocate
+
+    AffinityServerGroup:
+      type: tosca.groups.Root
+      description: >
+        Logical component grouping for affinity placement,
+        CM and DM will be host on the same host to get high performence
+      members: [ CM_Active, DM ]
+      policies:
+        type: tosca.policy.placement.Antilocate
+
+  policies:
+    - AnitAffinityPolicy:
+        type: tosca.policies.Placement.Antilocate
+        description: Apply anti-locate placement policy to group
+        targets: [ AnitAffinityServerGroup ]
+
+    - AffinityPolicy:
+        type: tosca.policies.Placement.Colocate
+        description: Apply anti-locate placement policy to group
+        targets: [ AffinityServerGroup ]
+
+  #  ServerGroupScaling_DM: # added future
+  #    members: [ DM, ]# only one, will be error
+  #    policies:
+  #      - name: MyScaleUpPolicy
+  #      - type: tosca.policy.scale.up | tosca.policy.scale.down
+  #      - rule: fn.utilizaton [ DM ], greater_than: 80
+  #      - trigger: script_dm
+
+  #  ServerGroupScaling_LB: # added future
+  #    members: [ LB, ] # only one, will be error
+  #    policies:
+  #      - name: MyScaleUpPolicy
+  #      - type: tosca.policy.scale.up | tosca.policy.scale.down
+  #      - rule: fn.utilizaton [ LB ], greater_than: 80
+  #      - trigger: script_lb
diff --git a/docs/developer/design/examples/Simple_RNC_definition.yaml b/docs/developer/design/examples/Simple_RNC_definition.yaml
new file mode 100644
index 0000000..7478d98
--- /dev/null
+++ b/docs/developer/design/examples/Simple_RNC_definition.yaml
@@ -0,0 +1,119 @@
+##    Licensed under the Apache License, Version 2.0 (the "License"); you may
+##    not use this file except in compliance with the License. You may obtain
+##    a copy of the License at
+##
+##         http://www.apache.org/licenses/LICENSE-2.0
+##
+##    Unless required by applicable law or agreed to in writing, software
+##    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+##    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+##    License for the specific language governing permissions and limitations
+##    under the License.
+
+tosca_definitions_version: tosca_simple_profile_for_nfv_1_0_0
+
+#metadata:
+#  template_name: tosca_simple_profile_for_nfv_vRNC
+#  template_author: opnfv_parser_project_from_zte
+#  template_version: tosca_simple_profile_for_nfv_1_0
+
+# Optional description of the definitions inside the file.
+description: >
+  NFV TOSCA simple profile for RNC types
+    1. Compute Node MM, CM, DM, LB...
+       1.1 MM: MaintainModule;
+       1.2 CM: Control Module;
+       1.3 DM: Data Module;
+       1.4 LB: LineCard Module.
+    2. Network Node VL and CP
+
+# The import section shall be ignored if the value of tosca_definitions_version
+# is tosca_simple_profile_for_nfv_1_0_0, otherwise will be needed.
+#imports:
+#  - TOSCA_nfv_definition_1_0.yaml
+
+# list of node type definitions
+node_types:
+  rnc.nodes.VNF:
+    derived_from: tosca.nodes.nfv.VNF
+    properties:
+      vnftype:
+        type: string
+        description: type of the RNC
+        default:  UMTS
+        required: false
+        constraints:
+          - valid_values: [ TDS-CDMA, UMTS, CDMA ]
+    requirements:
+      - virtualLink_VNFM:
+          capability: tosca.capabilities.nfv.VirtualLinkable
+          relationship: tosca.relationships.nfv.VirtualLinksTo
+          node: rnc.nodes.VL
+      - virtualLink_EMS:
+          capability: tosca.capabilities.nfv.VirtualLinkable
+          relationship: tosca.relationships.nfv.VirtualLinksTo
+          node: rnc.nodes.VL
+      - virtualLink_TRAFFIC:
+          capability: tosca.capabilities.nfv.VirtualLinkable
+          relationship: tosca.relationships.nfv.VirtualLinksTo
+          node: rnc.nodes.VL
+
+  rnc.nodes.compute.MM:
+    derived_from: tosca.nodes.nfv.VDU
+    properties:
+      activestatus:
+        type: integer
+        description: 1 for active or 0 for passive
+        constraints:
+            - valid_values: [ 0, 1 ]
+      id:
+        type: string
+        defaule: MM
+        description: >
+          A identifier of this VDU within the scope of the VNFD,
+          including version functional description and other
+          identification information.
+
+  rnc.nodes.compute.CM:
+    derived_from: tosca.nodes.nfv.VDU
+    properties:
+      activestatus:
+        type: integer
+        description: 1 for active or 0 for passive
+        constraints:
+          - valid_values: [ 0, 1 ]
+
+  rnc.nodes.compute.DM:
+    derived_from: tosca.nodes.nfv.VDU
+
+  rnc.nodes.compute.LB:
+    derived_from: tosca.nodes.nfv.VDU
+
+  rnc.nodes.BlockStorage:
+    derived_from: tosca.nodes.BlockStorage
+
+  rnc.nodes.VL:
+    derived_from: tosca.nodes.nfv.VL
+
+  rnc.nodes.CP:
+    derived_from: tosca.nodes.nfv.CP
+
+# list of capability type definitions
+capability_types:
+  rnc.capabilities.Container:
+    derived_from: tosca.capabilities.Container
+    properties:
+      swap:
+        type: scalar-unit.size
+        description: swap info
+        required: false
+        default: 0
+        constraints:
+            - greater_or_equal: 0 MB
+      iops:
+        type: integer
+        description: IOPS for disk
+        required: false
+        default: 0
+        constraints:
+          - greater_than: 0
diff --git a/docs/developer/design/examples/TOSCA_nfv_definition_1_0.yaml b/docs/developer/design/examples/TOSCA_nfv_definition_1_0.yaml
new file mode 100644
index 0000000..c535144
--- /dev/null
+++ b/docs/developer/design/examples/TOSCA_nfv_definition_1_0.yaml
@@ -0,0 +1,627 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+##########################################################################
+# The content of this file reflects TOSCA NFV Profile in YAML version
+# 1.0.0, which is derived from TOSCA Simple Profile. It describes the
+# definition for nfv TOSCA types including Node Type,
+# Relationship Type, Capability Type and Interfaces.
+##########################################################################
+tosca_definitions_version: tosca_simple_profile_for_nfv_1_0_0
+
+##########################################################################
+# Node Type.
+# A Node Type is a reusable entity that defines the type of one or more
+# Node Templates.
+##########################################################################
+
+tosca.nodes.nfv.VNF:
+  derived_from: tosca.nodes.Root
+  properties:
+    id:
+      type: string
+      description: ID of this VNF
+    vendor:
+      type: string
+      description: name of the vendor who generate this VNF
+    version:
+      type: version
+      description: version of the software for this VNF
+  requirements:
+    - virtualLink:
+        capability: tosca.capabilities.nfv.VirtualLinkable
+        relationship: tosca.relationships.nfv.VirtualLinksTo
+        node: tosca.nodes.nfv.VL
+
+tosca.nodes.nfv.VDU:
+  derived_from: tosca.nodes.Compute
+  properties:
+    id:
+      type: string
+      required: true
+      description: >
+        A unique identifier of this VDU within the scope
+        of the VNFD, including version functional
+        description and other identification information.
+        This will be used to refer to VDU when defining
+        relationships between them.
+  capabilities:
+    high_availability:
+      type: tosca.capabilities.nfv.HA
+    virtualbinding:
+      type: tosca.capabilities.nfv.VirtualBindable
+    monitoring_parameter:
+      type: tosca.capabilities.nfv.Metric
+  requirements:
+    - high_availability:
+        capability: tosca.capabilities.nfv.HA
+        relationship: tosca.relationships.nfv.HA
+        node: tosca.nodes.nfv.VDU
+        occurrences: [ 0, 1 ]
+
+tosca.nodes.nfv.CP:
+  derived_from: tosca.nodes.network.Port
+  description: >
+    The NFV CP node represents a logical connection point
+    entity as defined by ETSI GS NFV-MAN
+  properties:
+    type:
+      type: string
+      required: false
+  requirements:
+    - virtualLink:
+        capability: tosca.capabilities.nfv.VirtualLinkable
+        relationship: tosca.relationships.nfv.VirtualLinksTo
+        node: tosca.nodes.nfv.VL
+    - virtualBinding:
+        capability: tosca.capabilities.nfv.VirtualBindable
+        relationship: tosca.relationships.nfv.VirtualBindsTo
+        node: tosca.nodes.nfv.VDU
+
+tosca.nodes.nfv.VL:
+  derived_from: tosca.nodes.network.Network
+  properties:
+    vendor:
+      type: string
+      required: true
+      description: name of the vendor who generate this VL
+  capabilities:
+    virtual_linkable:
+      type: tosca.capabilities.nfv.VirtualLinkable
+
+tosca.nodes.nfv.VL.ELine:
+  derived_from: tosca.nodes.nfv.VL
+  capabilities:
+    virtual_linkable:
+      occurrences: 2
+
+tosca.nodes.nfv.VL.ELAN:
+  derived_from: tosca.nodes.nfv.VL
+
+tosca.nodes.nfv.VL.ETree:
+  derived_from: tosca.nodes.nfv.VL
+
+tosca.nodes.nfv.FP:
+  derived_from: tosca.nodes.Root
+  properties:
+    policy:
+      type: string
+      required: false
+      description: name of the vendor who generate this VL
+  requirements:
+    - forwarder:
+        capability: tosca.capabilities.nfv.Forwarder
+        relationship: tosca.relationships.nfv.ForwardsTo
+
+##########################################################################
+# Relationship Type.
+# A Relationship Type is a reusable entity that defines the type of one
+# or more relationships between Node Types or Node Templates.
+##########################################################################
+
+tosca.relationships.nfv.VirtualLinksTo:
+  derived_from: tosca.relationships.network.LinksTo
+  valid_target_types: [ tosca.capabilities.nfv.VirtualLinkable ]
+
+tosca.relationships.nfv.VirtualBindsTo:
+  derived_from: tosca.relationships.network.BindsTo
+  valid_target_types: [ tosca.capabilities.nfv.VirtualBindable ]
+
+tosca.relationships.nfv.HA:
+  derived_from: tosca.relationships.Root
+  valid_target_types: [ tosca.capabilities.nfv.HA ]
+
+tosca.relationships.nfv.Monitor:
+  derived_from: tosca.relationships.ConnectsTo
+  valid_target_types: [ tosca.capabilities.nfv.Metric ]
+
+tosca.relationships.nfv.ForwardsTo:
+  derived_from: tosca.relationships.root
+  valid_target_types: [ tosca.capabilities.nfv.Forwarder]
+
+##########################################################################
+# Capability Type.
+# A Capability Type is a reusable entity that describes a kind of
+# capability that a Node Type can declare to expose.
+##########################################################################
+
+tosca.capabilities.nfv.VirtualLinkable:
+  derived_from: tosca.capabilities.network.Linkable
+
+tosca.capabilities.nfv.VirtualBindable:
+  derived_from: tosca.capabilities.network.Bindable
+
+tosca.capabilities.nfv.HA:
+  derived_from: tosca.capabilities.Root
+  valid_source_types: [ tosca.nodes.nfv.VDU ]
+
+tosca.capabilities.nfv.HA.ActiveActive:
+  derived_from: tosca.capabilities.nfv.HA
+
+tosca.capabilities.nfv.HA.ActivePassive:
+  derived_from: tosca.capabilities.nfv.HA
+
+tosca.capabilities.nfv.Metric:
+  derived_from: tosca.capabilities.Root
+
+tosca.capabilities.nfv.Forwarder:
+  derived_from: tosca.capabilities.Root
+
+
+
+tosca.capabilities.nfv.CPU_extension:
+  derived_from: tosca.capabilities.Root
+  properties:
+    cpu_instruction_set_extension:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        Instruction sets are often enhanced with
+        instruction set extensions. This element
+        represents instruction set extensions that the
+        VDU has been developed, optimized or tested with
+    cpu_model:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        The CPU model for which the VDU has been
+        developed, compiled with CPU model specific
+        optimisations, optimized or validated on.
+    cpu_model_specification_binding:
+      type: string
+      required: false
+      description: >
+        VDUs may be developed, compiled, optimized
+        or validated on particular CPU models. Some
+        deployments may wish to permit the VDU to
+        be deployed on a platform with the specified
+        CPU only, or with an alternative CPU with the
+        same architecture, instruction set, and if
+        specified, instruction set extensions, or with a
+        CPU of equivalent or greater capability.
+    cpu_min_clock_speed:
+      type: string
+      required: false
+      description: >
+        The minimum CPU clock speed may be one of
+        the elements that the development and
+        validation of the VDU has been considered
+        with. This may be in conjunction with some of
+        the other CPU elements such as CPU Model.
+        Requiring a minimum clock speed may be part
+        of a deployment requirement necessary to
+        help ensure particular performance or timing
+        related characteristics are met in the
+        deployment.
+    cpu_core_reservation:
+      type: string
+      required: false
+      description: >
+        The number of CPU cores allocated to the
+        VDU. This may be necessary to help ensure
+        particular performance or timing related
+        characteristics are met in the deployment.
+    cpu_simultaneous_multi_threading_hw_thread_specification:
+      type: string
+      required: false
+      description: >
+        The use of Simultaneous Multi-Threading HW
+        is an efficient way to increase the compute
+        capacity of a platform. SMT HW threads share
+        some CPU core resources. In some VDU
+        implementations, it may be necessary to very
+        explicitly control the HW thread allocation on a
+        platform. This could be to help ensure locality
+        in data caches or as a mechanism to enhance
+        determinism.
+    cpu_core_oversubscription_policy:
+      type: string
+      required: false
+      description: >
+        The VDU may co-exist on a platform with
+        multiple VDUs or VMs and as such will be
+        sharing CPU core resources available in the
+        platform. It may be necessary to specify the
+        CPU core oversubscription policy in terms of
+        virtual cores to physical cores/threads on the
+        platform. This policy could be based on
+        required VDU deployment characteristics such
+        as high performance, low latency, and /or
+        deterministic behaviour.
+    cpu_core_and_hw_thread_allocation_topology_policy:
+      type: string
+      required: false
+      description: >
+        The VDU may be designed to use a specific
+        mapping of virtual CPUs to HW threads or
+        cores with a specific allocation topology in
+        order to ensure locality in data caches and
+        maximize performance. The VDU will not
+        specify which physical resources to use, but
+        may specify if virtual CPUs shall be coupled
+        together as HW threads belonging to the same
+        core, or as belonging to the same processor.
+    cpu_last_level_cache_size:
+      type: scalar-unit.size
+      required: false
+      constraints:
+        - greater_or_equal: 0 KB
+      description: >
+        The size of the last level cache may impact the
+        performance of the VDU, particularly for cache
+        intensive workloads.
+    cpu_direct_io_access_to_cache:
+      type: string
+      required: false
+      description: >
+        The ability of an I/O device to have direct
+        access to the CPU cache enables
+        considerable memory access savings and for
+        I/O intensive workloads can offer significant
+        performance benefits.
+    cpu_translation_look_aside_buffer_parameter:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        The Translation Look-aside Buffer (TLB) is a
+        cache for address translation typically used by
+        a hardware based memory management units.
+        The Input/Output TLB (IOTLB) is a cache for
+        address translation related to remapping
+        hardware. The availability of a TLB and an
+        IOTLB can significantly improve the
+        performance of a virtual machine.
+        A number of parameters of the TLBs impact
+        the performance potential. These include:
+        1  TLB Size.
+        2  TLB Large Page Support.
+        3  IOTLB Size.
+        4  IOTLB Large Page Support.
+    cpu_hot_add:
+      type: boolean
+      required: false
+      description: >
+        Hot add CPU is the ability to dynamically add
+        CPUs to a running system. The new CPU can
+        immediately replace a failing CPU via
+        migration or be brought on-line later.
+    cpu_support_accelerator:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        This capability refers to support by the CPU
+        and associated chipsets of a data processing
+        accelerator framework, together with its
+        libraries and drivers.
+
+tosca.capabilities.nfv.Memory_extension:
+  derived_from: tosca.capabilities.Root
+  properties:
+    memory_parameter:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        There are a number of memory related parameters that can have a
+        significant impact on the performance and/or reliability of the VDU.
+        These include:
+        •  Memory Type.
+        •  Memory Speed
+        •  Number of memory channels.
+        •  Size of available memory.
+        •  Reliability characteristics such as Memory Error Correction
+        codes.
+        •  Memory oversubscription policy.
+        •  Memory bandwidth required per VDU.
+        •  Number of large pages required per VDU
+        •  Non-Uniform Memory Architecture (NUMA) Allocation Policy,
+        i.e. in NUMA architecture how you specify memory allocation
+        that is cognisant of the relevant process/core allocation. This
+        applies also to allocation of huge pages.
+    memory_hot_add:
+      type: boolean
+      required: false
+      description: >
+        Hot add memory is the ability to add physical memory while the system
+        is running. Added memory can immediately replace failing memory via
+        migration or be brought on-line later.
+
+tosca.capabilities.nfv.Hypervisors:
+  derived_from: tosca.capabilities.Root
+  properties:
+    hypervisors:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        There are a number of hypervisor related parameters that can have a
+        significant impact on the deployment and performance of the VDU.
+        These include:
+        •  Hypervisor type
+        •  Hypervisor version as a VDU may be validated with a particular
+        version.
+        •  Hypervisor Address Translation support parameters including:
+        o  Second Level Address Translation.
+        o  Second Level Address Translation with Large page
+        support.
+        o  Second Level Address Translation for I/O.
+        o  Second Level Address Translation for I/O with Large page.
+        support. Where "Large" is considered to be 1 GB or
+        greater.
+        o  Support for interrupt remapping, i.e. supporting the IOMMU
+        in the hypervisor.
+        o  Support of data processing acceleration libraries in the
+        hypervisor, i.e. for acceleration libraries which require
+        hypervisor support for high performance.
+
+tosca.capabilities.nfv.PCIe:
+  derived_from: tosca.capabilities.Root
+  properties:
+    platform_pcie_parameter:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        There are a number of PCIe related parameters that can
+        have a significant impact on the deployment and
+        performance of the VDU. These include:
+        •  PCIe generational capabilities.
+        •  PCIe bandwidth.
+        •  PCIe Device Pass-through.
+        •  PCIe SR-IOV as the VDU may require that an SR-
+        IOV virtual vunction from the specified PCIe
+        device can be allocated to the VM.
+        •  PCIe Device Assignment Affinity. The VDU may
+        require for performance reasons the ability to
+        allocate a partitionable PCIe Device capability
+        such as a NIC port, an entire NIC or a NIC virtual
+        function to the VDU while also ensuring that the
+        selected device is locally connected to the same
+        processor.
+    platform_pcie_parameter:
+      type: string
+      required: false
+      description: >
+        Detecting and reporting correctable and un-correctable
+        (fatal and non-fatal) PCIe errors to software for error
+        handling and remediation.
+    platform_acceleration_device:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        The VDU may have been developed, optimized or
+        tested with an acceleration device such as a crypto
+        accelerator that may typically be accessed over a PCIe
+        bus.
+
+tosca.capabilities.nfv.network.Interfaces:
+  derived_from: tosca.capabilities.Root
+  properties:
+    network_interface_card_capability:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        The VDU may have been developed, optimized or
+        tested with certain NIC capabilities to benefit items
+        such as performance or scalability. These include:
+        •  TCP Large Segmentation Offload (LSO) for
+        offload the segmentation of large TCP
+        messages into MTU sized packets from the
+        CPU to the NIC.
+        •  Large Receive Offload (LRO), i.e. the
+        inverse of LSO by coalescing incoming
+        TCP/IP packets into larger segments for
+        processing in the CPU.
+        •  Checksum Offload.
+        •  Receive Side Scaling (RSS), for packet
+        distribution between cores.
+        •  Flow Director, for more fine grained (than
+        RSS) packet distribution between cores.
+        •  Mirroring of packets between interfaces.
+        •  Availability of Independent Rx/Tx queues for
+        VM so that queue pairs in the NIC can be
+        allocated to the VMs.
+        •  Jumbo Frame support.
+        •  VLAN tag stripping.
+        •  RDMA support.
+        •  SR-IOV support.
+        •  Data processing acceleration software
+        library support, e.g. DPDK ® - see note.
+    network_interface_bandwidth:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        The network speed/bandwidth to be guaranteed
+        per requested NIC.
+    data_processing_acceleration_library:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        Name and version of the data processing
+        acceleration library used. Orchestration can match
+        any NIC that is known to be compatible with the
+        specified library
+
+tosca.capabilities.nfv.network.Virtual_switches:
+  derived_from: tosca.capabilities.Root
+  properties:
+    vswitch_capability:
+      type: list
+      required: false
+      entry_schema:
+        type: string
+      constraints:
+        - min_length: 1
+      description: >
+        The VDU may have been developed, optimized or tested with a
+        particular vSwitch and may require specifying the vSwitch type, version
+        and key features such as overlay tunnel termination support.
+
+tosca.capabilities.nfv.Storage:
+  derived_from: tosca.capabilities.Root
+  properties:
+    storage_requirement:
+      type: scalar-unit.size
+      required: false
+      constraints:
+        - greater_or_equal: 0 MB
+      description: >
+        Required storage characteristics (e.g. size), including Key Quality
+        Indicators (KQIs) for performance and reliability/availability.
+    rdma_support_bandwitdh:
+      type: integer
+      required: false
+      constraints:
+        - greater_or_equal: 0
+      description: >
+        The VDU may have been developed, optimized or tested with a
+        storage supporting RDMA over a given bandwidth.
+
+
+
+##########################################################################
+# Group Type.
+# Defined within the TOSCA nfv Simple Profile specification.
+##########################################################################
+tosca.groups.nfv.VNFFG:
+  derived_from: tosca.groups.Root
+  properties:
+    vendor:
+      type: string
+      required: true
+      description: name of the vendor who generate this VNFFG
+    version:
+      type: string
+      required: true
+      description: version of this VNFFG
+    number_of_endpoints:
+      type: integer
+      required: true
+      description: count of the external endpoints included in this VNFFG
+    dependent_virtual_link:
+      type: list
+      description: Reference to a VLD  used in this Forwarding Graph
+      required: true
+      entry_schema:
+        type: string
+    connection_point:
+      type: list
+      description: Reference to Connection Points forming the VNFFG
+      required: true
+      entry_schema:
+        type: string
+    constituent_vnfs:
+      type: list
+      description: Reference to a list of  VNFD used in this VNF Forwarding Graph
+      required: true
+      entry_schema:
+        type: string
+    targets:
+      type: list
+      required: false
+      description: list of  Network Forwarding Path within the VNFFG
+      entry_schema:
+        type: string
+  requirements:
+    - forwarder:
+        capability: tosca.capabilities.nfv.Forwarder
+        relationship: tosca.relationships.nfv.ForwardsTo
+
+#data_types:
+##########################################################################
+# Data Type. To be continue
+# A Datatype is a complex data type declaration which contains other
+# complex or simple data types.
+# BWT: will be added future.
+##########################################################################
+#tosca.datatypes.network.XX:
+#  properties:
+#    network_name:
+#      type: string
+#    network_id:
+#      type: string
+#    addresses:
+#      type: list
+#      entry_schema:
+#       type: string
+
+#artifact_types:
+##########################################################################
+# Artifact Type.To be continue
+# An Artifact Type is a reusable entity that defines the type of one or more
+# files which Node Types or Node Templates can have dependent relationships
+# and used during operations such as during installation or deployment.
+# BWT: will be added future.
+##########################################################################
+#tosca.artifacts.File.XXX:
+#  derived_from: tosca.artifacts.Root
diff --git a/docs/developer/design/examples/clearwater_tosca.yaml b/docs/developer/design/examples/clearwater_tosca.yaml
new file mode 100644
index 0000000..2b4dd52
--- /dev/null
+++ b/docs/developer/design/examples/clearwater_tosca.yaml
@@ -0,0 +1,151 @@
+tosca_definitions_version: tosca_simple_yaml_1_0_0
+description: >
+  This module defines a VNF Deployment Unit.
+
+metadata:
+  template_name: clearwater
+  template_author: HP
+
+dsl_definitions:
+  compute_props_host_ellis: &compute_props_host_ellis
+    num_cpu: 4
+    mem_size: 4096
+  compute_props_host_bono: &compute_props_host_bono
+    num_cpu: 3
+    mem_size: 2048
+
+node_types:
+  tosca.nodes.compute.ellis:
+    derived_from: tosca.nodes.compute
+
+  tosca.nodes.compute.bono:
+    derived_from: tosca.nodes.compute
+
+topology_template:
+  # a description of the topology template
+  description: >
+
+
+  inputs:
+   storage_size:
+     type: scalar-unit.size
+     default: 2048 M
+     description: The required storage resource
+
+   storage_location:
+     type: string
+     description: >
+       Block storage mount point (filesystem path).
+
+  node_templates:
+    ellis:
+      type: tosca.nodes.compute.ellis
+      capabilities:
+        host:
+          properties: *compute_props_host_ellis
+        scalable:
+          properties:
+            min_instances: 1
+            default_instances: 1
+      requirements:
+        - local_storage:
+            node: ellis_BlockStorage
+            relationship:
+              type: AttachesTo
+                properties:
+                  location: { get_input: storage_location }
+      interfaces:
+        Standard:
+          start:
+            implementation: start.sh
+          delete:
+            implementaion: stop.sh
+          stop:
+            implementaion: shutdown.sh
+
+    ellis_BlockStorage:
+      type: tosca.nodes.BlockStorage
+      properties:
+        size: { get_input: storage_size }
+
+    bono:
+      type: tosca.nodes.compute.bono
+      capabilities:
+        host:
+          properties: *compute_props_host_bono
+        scalable:
+          properties:
+            min_instances: 3
+            default_instances: 3
+      requirements:
+        - local_storage:
+            node: bono_BlockStorage
+            relationship:
+              type: AttachesTo
+                properties:
+                  location: { get_input: storage_location }
+      interfaces:
+        Standard:
+          start:
+            implementation: start.sh
+          delete:
+            implementaion: stop.sh
+          stop:
+            implementaion: shutdown.sh
+
+    bono_BlockStorage:
+      type: tosca.nodes.BlockStorage
+      properties:
+        size: { get_input: storage_size }
+
+    clearwater_network1:
+      type: tosca.nodes.network.Network
+      properties:
+        ip_version: 4
+
+    ellis_port1:
+      type: tosca.nodes.network.Port
+      requirements:
+        - binding:
+            node: ellis
+        - link:
+            node: clearwater_network1
+
+    clearwater_network2:
+      type: tosca.nodes.network.Network
+      properties:
+        ip_version: 4
+
+    ellis_port2:
+      type: tosca.nodes.network.Port
+      requirements:
+        - binding:
+            node: ellis
+        - link:
+            node: clearwater_network2
+
+    clearwater_network1:
+      type: tosca.nodes.network.Network
+      properties:
+        ip_version: 4
+
+    bono_port1:
+      type: tosca.nodes.network.Port
+      requirements:
+        - binding:
+            node: bono
+        - link:
+            node: clearwater_network1
+
+    clearwater_network2:
+      type: tosca.nodes.network.Network
+      properties:
+        ip_version: 4
+
+    bono_port2:
+      type: tosca.nodes.network.Port
+      requirements:
+        - binding:
+            node: bono
+        - link:
+            node: clearwater_network2
diff --git a/docs/developer/design/images/vRNC_Definition.png b/docs/developer/design/images/vRNC_Definition.png
new file mode 100644
index 0000000..84d25e3
--- /dev/null
+++ b/docs/developer/design/images/vRNC_Definition.png
diff --git a/docs/developer/design/images/vRNC_Topology.png b/docs/developer/design/images/vRNC_Topology.png
new file mode 100644
index 0000000..e4f04f1
--- /dev/null
+++ b/docs/developer/design/images/vRNC_Topology.png
diff --git a/docs/developer/design/index.rst b/docs/developer/design/index.rst
new file mode 100644
index 0000000..ab83cec
--- /dev/null
+++ b/docs/developer/design/index.rst
@@ -0,0 +1,15 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+*********************************
+OPNFV Parser Design Documentation
+*********************************
+
+.. toctree::
+   :numbered:
+   :maxdepth: 6
+
+   yang2tosca.rst
+   policy2tosca.rst
+   parser_new_keywords.rst
+   vRNC_tosca_intro.rst
diff --git a/docs/developer/design/parser_new_keywords.rst b/docs/developer/design/parser_new_keywords.rst
new file mode 100644
index 0000000..f430b1d
--- /dev/null
+++ b/docs/developer/design/parser_new_keywords.rst
@@ -0,0 +1,117 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+===================
+New Parser keywords
+===================
+
+1.NFV-tosca new keywords
+------------------------
+
+All keywords in nfv tosca are not implemented in code, and will be
+implemented by parser.
+
+1.1 Nodes types
+~~~~~~~~~~~~~~~
+
+Basic types
+^^^^^^^^^^^
+
+* tosca.nodes.nfv.VDU
+* tosca.nodes.nfv.CP
+* tosca.nodes.nfv.VL
+
+Extend types
+^^^^^^^^^^^^
+
+* tosca.nodes.nfv.VL.ELine
+* tosca.nodes.nfv.VL.ELAN
+* tosca.nodes.nfv.VL.ETree
+* tosca.nodes.nfv.FP
+
+1.2 Capability types
+~~~~~~~~~~~~~~~~~~~~
+
+Basic types
+^^^^^^^^^^^
+
+* tosca.capabilities.nfv.VirtualBindable
+* tosca.capabilities.nfv.VirtualLinkable
+* tosca.capabilities.nfv.HA.ActiveActive
+* tosca.capabilities.nfv.HA.ActivePassive
+* tosca.capabilities.nfv.Metric
+
+Extend types
+^^^^^^^^^^^^
+
+* tosca.capabilities.nfv.Forwarder
+* tosca.capabilities.nfv.CPU\_extension
+* tosca.capabilities.nfv.Memory\_extension
+* tosca.capabilities.nfv.Hypervisors
+* tosca.capabilities.nfv.PCIe
+* tosca.capabilities.nfv.network.Interfaces
+* tosca.capabilities.nfv.network.Virtual\_switches
+* tosca.capabilities.nfv.Storage
+
+1.3 Relationship types
+~~~~~~~~~~~~~~~~~~~~~~
+
+Basic types
+^^^^^^^^^^^
+
+* tosca.relationships.nfv.VirtualBindsTo
+* tosca.relationships.nfv.VirtualLinksTo
+* tosca.relationships.nfv.HA
+* tosca.relationships.nfv.Monitor
+
+Extend types
+^^^^^^^^^^^^
+
+* tosca.relationships.nfv.ForwardsTo
+
+1.4 Group Types
+~~~~~~~~~~~~~~~
+
+* tosca.groups.nfv.VNFFG
+
+2.Simple-tosca new keywords
+---------------------------
+
+Some keywords are only defined in tosca simple profile,but are not
+supported in tosca-paser, and some keywords such as "policy type", are not yet defined
+completely so far.
+
+2.1 topology template keyname
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+* "substitution\_mappings" syntax
+
+    An optional declaration that exports the topology template as an
+    impletmentation of a node type, which is not supported by tosca-parser.
+
+2.2 Group types
+~~~~~~~~~~~~~~~
+
+Basic types
+^^^^^^^^^^^
+
+* tosca.group.root
+
+2.3 Policy Types
+~~~~~~~~~~~~~~~~
+
+Basic types
+^^^^^^^^^^^
+
+* tosca.policies.Root
+* tosca.policies.Placement
+* tosca.policies.Scaling
+
+Extend types
+^^^^^^^^^^^^
+
+* tosca.policies.Update
+* tosca.policies.Performance
+* tosca.policy.placement.Antilocate
+* tosca.policy.placement.Colocate
+
diff --git a/docs/developer/design/policy2tosca.rst b/docs/developer/design/policy2tosca.rst
new file mode 100644
index 0000000..fa238b2
--- /dev/null
+++ b/docs/developer/design/policy2tosca.rst
@@ -0,0 +1,87 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+===================
+Parser POLICY2TOSCA
+===================
+
+Overview
+========
+
+Parser is an open source project and licensed under Apache 2. Parser will help
+to provide a tooling mechanism, by parsing Telecom operators’ VNF descriptors
+(YANG templates) into TOSCA templates and then further translate TOSCA
+templates into certain common templates, which could be used in IaaS orchestration
+projects like OpenStack Heat.
+
+Prerequisites
+=============
+
+Parser - POLICY2TOSCA requires the following to be installed.
+
+1. cliff
+--------
+
+Install cliff with the following links.
+::
+- `install <http://docs.openstack.org/developer/cliff/install.html>`
+or
+- `demoapp <http://docs.openstack.org/developer/cliff/demoapp.html>`
+
+Installation
+============================
+
+Please follow the below installation steps to install parser - POLICY2TOSCA.
+
+Step 1: Clone the parser project.
+
+.. code-block:: bash
+
+    git clone https://gerrit.opnfv.org/gerrit/parser
+
+Step 2: Install the policy2tosca module.
+
+.. code-block:: bash
+
+    cd parser/policy2tosca
+    python setup.py install
+
+Execution
+===========================
+
+Step 1: To see a list of commands available.
+
+.. code-block:: bash
+
+    policy2tosca --help
+
+Step 2: To see help for an individual command, include the command name on the command line
+
+.. code-block:: bash
+
+    policy2tosca help <service>
+
+Step 3: To inject/remove policy types/policy definitions provide the TOSCA file as input to policy2tosca command line.
+
+.. code-block:: bash
+
+    policy2tosca <service> [arguments]
+
+Example:
+
+.. code-block:: bash
+
+    policy2tosca add-definition --policy_name rule2 --policy_type  tosca.policies.Placement.Geolocation --description "test description" --properties region:us-north-1,region:us-north-2,min_inst:2 --targets VNF2,VNF4 --metadata "map of strings" --triggers "1,2,3,4" --source example.yaml
+
+
+Step 4: Verify the TOSCA YAMl updated with the injection/removal executed.
+
+.. code-block:: bash
+
+    cat "<source tosca file>"
+
+Example:
+
+.. code-block:: bash
+
+    cat example_tosca.yaml
diff --git a/docs/developer/design/vRNC_tosca_intro.rst b/docs/developer/design/vRNC_tosca_intro.rst
new file mode 100644
index 0000000..11e1bdb
--- /dev/null
+++ b/docs/developer/design/vRNC_tosca_intro.rst
@@ -0,0 +1,166 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+======================================
+OPNFV Parser tosca2heat - New Keywords
+======================================
+
+1.NFV-tosca new keywords
+------------------------
+
+All keywords in nfv tosca are not implemented in code, and will be
+implemented by parser.
+
+1.1 Nodes types
+~~~~~~~~~~~~~~~
+
+Basic types
+^^^^^^^^^^^
+
+* tosca.nodes.nfv.VDU
+* tosca.nodes.nfv.CP
+* tosca.nodes.nfv.VL
+
+Extend types
+^^^^^^^^^^^^
+
+* tosca.nodes.nfv.VL.ELine
+* tosca.nodes.nfv.VL.ELAN
+* tosca.nodes.nfv.VL.ETree
+* tosca.nodes.nfv.FP
+
+1.2 Capability types
+~~~~~~~~~~~~~~~~~~~~
+
+Basic types
+^^^^^^^^^^^
+
+* tosca.capabilities.nfv.VirtualBindable
+* tosca.capabilities.nfv.VirtualLinkable
+* tosca.capabilities.nfv.HA.ActiveActive
+* tosca.capabilities.nfv.HA.ActivePassive
+* tosca.capabilities.nfv.Metric
+
+Extend types
+^^^^^^^^^^^^
+
+* tosca.capabilities.nfv.Forwarder
+* tosca.capabilities.nfv.CPU\_extension
+* tosca.capabilities.nfv.Memory\_extension
+* tosca.capabilities.nfv.Hypervisors
+* tosca.capabilities.nfv.PCIe
+* tosca.capabilities.nfv.network.Interfaces
+* tosca.capabilities.nfv.network.Virtual\_switches
+* tosca.capabilities.nfv.Storage
+
+1.3 Relationship types
+~~~~~~~~~~~~~~~~~~~~~~
+
+Basic types
+^^^^^^^^^^^
+
+* tosca.relationships.nfv.VirtualBindsTo
+* tosca.relationships.nfv.VirtualLinksTo
+* tosca.relationships.nfv.HA
+* tosca.relationships.nfv.Monitor
+
+Extend types
+^^^^^^^^^^^^
+
+* tosca.relationships.nfv.ForwardsTo
+
+1.4 Group Types
+~~~~~~~~~~~~~~~
+
+* tosca.groups.nfv.VNFFG
+
+2.Simple-tosca new keywords
+---------------------------
+
+Some keywords are only defined in tosca simple profile,but are not
+supported in tosca-paser, and some keywords such as "policy type", are not yet defined
+completely so far.
+
+2.1 topology template keyname
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+* "substitution\_mappings" syntax
+
+    An optional declaration that exports the topology template as an
+    impletmentation of a node type, which is not supported by tosca-parser.
+
+2.2 Group types
+~~~~~~~~~~~~~~~
+
+Basic types
+^^^^^^^^^^^
+
+* tosca.group.root
+
+2.3 Policy Types
+~~~~~~~~~~~~~~~~
+
+Basic types
+^^^^^^^^^^^
+
+* tosca.policies.Root
+* tosca.policies.Placement
+* tosca.policies.Scaling
+
+Extend types
+^^^^^^^^^^^^
+
+* tosca.policies.Update
+* tosca.policies.Performance
+* tosca.policy.placement.Antilocate
+* tosca.policy.placement.Colocate
+
+
+=======================================
+OPNFV Parser tosca2heat - vRNC Topology
+=======================================
+
+The simple vRNC topology is shown below: :numref:`figure_topo`
+
+.. figure:: images/vRNC_Topology.png
+   :name: figure_topo
+   :width: 100%
+
+   vRNC Topology
+
+-  vRNC includes four networks: EMS\_network, CTRL\_network,
+   Intermedia\_network and extermedia\_network;
+-  vRNC includes four node types: MM, LB, CM and DM;
+-  MM: Stands for Maintain Module, which links to EMS\_network,
+   CTRL\_network and extermedia\_network. It composes of active vdu and
+   standby vdu.
+-  CM: Stands for Control Module, which links to CTRL\_network and
+   intermedia\_network. All CM nodes form resource pool and each node
+   composes of active vdu and standby vdu.
+-  DM: Stands for Data Module, which links to CTRL\_network and
+   intermedia\_network. All DM nodes form resource pool and each node is
+   a vdu.
+-  LB: Stands for LineCard Module, which links to CTRL\_network and
+   intermedia\_network and extermedia\_network. All LB nodes form
+   resource pool and each node is a vdu.
+
+=========================================
+OPNFV Parser tosca2heat - vRNC Definition
+=========================================
+
+The files dependency and correspoding specificaiton of vRNC definition
+are shown below: :numref:`figure_def`
+
+.. figure:: images/vRNC_Definition.png
+   :name: figure_def
+   :width: 100%
+
+   vRNC Definition
+
+-  TOSCA\_definition\_1.0.yaml should be the lastest version, which is
+   updated by tosca-parser community, but some keywords (such as
+   substitution\_mappings) in the correspoding standard of
+   "TOSCA-simple-profile-YAML-v1.0" is not supported.
+-  TOSCA\_nfv\_definition\_1.0.yaml is a new file, and not implemented
+   in code, and the correspoding standard of
+   "tosca-nfv-v1.0-wd02-rev02" is not complete now.
diff --git a/docs/developer/design/yang2tosca.rst b/docs/developer/design/yang2tosca.rst
new file mode 100644
index 0000000..5aaf463
--- /dev/null
+++ b/docs/developer/design/yang2tosca.rst
@@ -0,0 +1,98 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+=================
+Parser YANG2TOSCA
+=================
+
+Overview
+========
+
+Parser is an open source project and licensed under Apache 2. Parser will help
+to provide a tooling mechanism, by parsing Telecom operators’ VNF descriptors
+(YANG templates) into TOSCA templates and then further translate TOSCA
+templates into certain common templates, which could be used in IaaS orchestration
+projects like OpenStack Heat.
+
+Prerequisites
+=============
+
+Parser requires the following to be installed.
+
+1. PYANG
+--------
+
+Please follow the below installation steps.
+
+Step 1: Clone pyang tool or download the zip file from the following link.
+
+.. code-block:: bash
+
+    git clone https://github.com/mbj4668/pyang.git
+
+OR
+
+.. code-block:: bash
+
+    wget https://github.com/mbj4668/pyang/archive/master.zip
+
+Step 2: Change directory to the downloaded directory and run the setup file.
+
+.. code-block:: bash
+
+    cd pyang
+    python setup.py
+
+2. python-lxml
+--------------
+
+Please follow the below installation link. http://lxml.de/installation.html
+
+
+Installation
+============================
+
+Please follow the below installation steps to install parser.
+
+Step 1: Clone the parser project.
+
+.. code-block:: bash
+
+    git clone https://gerrit.opnfv.org/gerrit/parser
+
+Execution
+===========================
+
+Step 1: Change directory to where the scripts are present.
+
+.. code-block:: bash
+
+    cd parser/yang2tosca
+
+Step 2: Copy the YANG file which needs to be converted into TOSCA to
+        current (parser/yang2tosca) folder.
+
+Step 3: Run the python script "parser.py" with the YANG file as an input option.
+
+.. code-block:: bash
+
+    python parser.py -n "YANG filename"
+
+Example:
+
+.. code-block:: bash
+
+    python parser.py -n example.yaml
+
+Step 4: Verify the TOSCA YAMl which file has been created with the same name
+        as the YANG file with a “_tosca” suffix.
+
+.. code-block:: bash
+
+    cat "YANG filename_tosca.yaml"
+
+Example:
+
+.. code-block:: bash
+
+    cat example_tosca.yaml
diff --git a/docs/developer/overview/index.rst b/docs/developer/overview/index.rst
new file mode 100644
index 0000000..aff89d9
--- /dev/null
+++ b/docs/developer/overview/index.rst
@@ -0,0 +1,13 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International
+.. License.
+.. http://creativecommons.org/licenses/by/4.0
+
+=============================================
+OPNFV Parser Danube Overview
+=============================================
+
+
+.. toctree::
+   :maxdepth: 1
+
+   overview
diff --git a/docs/developer/overview/overview.rst b/docs/developer/overview/overview.rst
new file mode 100644
index 0000000..d1cad64
--- /dev/null
+++ b/docs/developer/overview/overview.rst
@@ -0,0 +1,89 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+=========================================
+OPNFV Parser Danube Overview Doumentation
+=========================================
+
+.. contents::
+   :depth: 3
+   :local:
+
+Introduction
+---------------
+
+In NFV, various templates (such as descriptors, records and so on) are utilized
+to describe the deployment requirements (such as basic VM requirements – vCPU,
+memory, storage, as well as the NFV acceleration management requirement such as
+Huge Pages support, SR-IOV, NUMA affinity, DPDK support etc.),
+the post-instaniation records (such as storage usage report, CPU performance
+report etc.) or other purposes. However in order to make these templates
+adaptable and feasible for purpose like deployment orchestration/automation,
+certain tooling mechanism that provides template translation is necessary.
+
+Project Parser will help to provide such tooling mechanism, by parsing Telecom
+operators’ descriptors/records into TOSCA/CAMP templates and then further
+translate TOSCA/CAMP templates into certain common templates, which could be
+used in IaaS orchestration projects like OpenStack Heat.
+
+Upgrades from Arno
+------------------------
+
+For Release B, Parser offers the following additional capabilities:
+
+* Integration of Heat-Translator Liberty release code. (both heat in-tree code and standalone package are provided)
+
+* Yang2Tosca module which offers the capability to translate yang based
+  scriptors to tosca formate templates. Users could further use Heat-translator
+  module to translate this tosca template to Heat Orchestration template.
+  Yang2Tosca module could be installed seperately after user installed
+  OPNFV B release platform.
+
+* The "parser_new_keywords" document demonstrate a set of keywords concluded by
+  Parser team that need to be supported in tosca to heat translation. However
+  it should be noted that these keywords only serve as a roadmap. We will start
+  from Release C to indicate which specific set of keywords are supported in
+  Parser.
+
+* The "vRNC_tosca_intro" document describes Parser's use case analysis on vRNC scenario.
+  The "example" folder contains examples of tosca-nfv standard and vRNC scenario.
+  See also https://wiki.opnfv.org/parser.
+
+Upgrades from Brumapatra
+-----------------------
+
+For Release C, Parser offers the following additional capabilities:
+
+* Policy2Tosca module which enables policy related fields in tosca could be translated
+  into heat orchestration template correctly. Policy2Tosca module could be installed seperately
+  after user installed OPNFV C release platform.
+
+* Tosca2Heat enhancements which includes a set of feature addons (such as substitution mapping)
+for OpenStack tosca-parser module which is integrated in the OPNFV C release platform. And the
+main details are listed below:
+
+  ** support substitution mapping semantic in tosca-parser:
+    - support parse and validation about substitution mapping definition;
+    - support import nested template;
+    - support deployment a node which is substituted by a template;
+    - support deployment a template alone which has substitution mapping definition.
+
+  ** afinity and anti-affinity support when deploy servers:
+    - tosca.policies.Placement.Colocate;
+    - tosca.policies.Placement.Antilocate;
+
+  ** add validation about input parameters;
+
+  ** add high availability and block volume in compute translation;
+
+  ** add ip output in compute translation;
+
+  ** add deployment a whole vRNC testcase with parser.
+
+* Additional testing support.
+
+Upgrades from Colorado
+----------------------
+
+For Release D, Parser offers the following additional capabilities:
+
diff --git a/docs/developer/requirements/index.rst b/docs/developer/requirements/index.rst
new file mode 100644
index 0000000..7eddaae
--- /dev/null
+++ b/docs/developer/requirements/index.rst
@@ -0,0 +1,11 @@
+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+
+********************************
+OPNFV Parser Danube Requirements
+********************************
+
+.. toctree::
+   :maxdepth: 1
+
+