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- Main DCM Microservice (contains the service mesh Module(formally Logical Cloud Controller), User Module and Namespace Module, Quota Module(Limits resources available to each logical cloud))
- CA Key Distribution Controller ( Generate intermediate CA key for each edge which is signed by an root or intermediate key)
...
- Client creates logical cloud using logical cloud creation API and the following documents are created in the DCM collection
- The core module parses the Json and creates a new document for the logical cloud in the mongodb DCM collection.
- The core module also creates a cluster document in the DCM collection
- The user module parses the Json and creates a new document for user
The namespace module parses the Json and creates a new document for namespace
- Associates logical cloud with clusters (this API is called multiple times)
- Updates the cluster document with the cluster name, loadbalancer ip every time its called
- Add quota for logical cloud
- The quota module creates a quota document containing the quota details
- Apply API is called
- Service mesh module gets CA bundle from CA controller via gRPC
- Service mesh module gets names of logical cloud and creates a new namespace name using name of logical cloud name
- Service mesh module creates helm template/istioctl manifest (WIP)
- Service mesh module creates service mesh document in the DCM collection and stores the above (CA bundle contents, istio namespace, istioctl manifest) in the document
- DCM informs the resource synchronizer to start the logical cloud creation via gRPC and the resource synchronizer starts reading from the DB
- The DCM gets status from the resource synchronizer via gRPC
- When the logical cloud creation is complete, the resource synchronizer will store the modified kubeconfig file for each cluster in the cluster document of the logical cloud
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The details of the DCM Data Model can be found in DCM MongoDB Data Model
DCM Source Code Directory Structure
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| Code Block |
|---|
| language | js |
|---|
| title | Logical Cloud Creation API |
|---|
|
URL: /v2/projects/<project-name>/logical-clouds
POST BODY:
{
"metadata" : {
"logical-cloud-name": "lc-1", //unique name for the record
"description": "logical cloud for walmart finance department", //description for the logical cloud
"userData1":"<user data>",
"userData2":"<user data>"
},
"spec" : {
"namespace" : "ns-1", // one namespace per logical cloud
"user" : {
"user-name" : "user-1", //name of user for this cloud (username and logical cloud name would be used as subject for the user key)
"type" : "certificate", //type of authentication credentials used by user (certificate, Token, UNPW)
"user-permissions" : [
{ "permission-name" : "permission-1",
"apiGroups" : ["stable.example.com"],
"resources" : ["secrets", "pods"],
"verbs" : ["get", "watch", "list", "create"]
},
{ "permission-name" : "permission-2",
"apiGroups" : [""],
"resources" : ["configmaps"],
"verbs" : ["*"]
}
]
}
}
}
Return Status: 201
Return Body:
{
"name" : "logical-cloud-1",
"logical-cloud-name" : "logical-cloud-1",
"namespace" : "ns-1",
"user-name" : "user-1"
} |
...
| Code Block |
|---|
| language | js |
|---|
| title | PUT Logical Cloud |
|---|
|
URL: /v2/projects/<project-name>/logical-clouds/<logical-cloud-name>
PUT BODY:
{
"metadata" : {
"logical-cloud-name": "lc-1",
"description": "logical cloud for walmart finance department", //description for the logical cloud
"userData1":"<user data>",
"userData2":"<user data>"
},
"spec" : {
"namespace" : "ns-1", // one namespace per logical cloud
"user" : {
"user-name" : "user-1", //name of user for this cloud (username and logical cloud name would be used as subject for the user key)
"type" : "certificate", //type of authentication credentials used by user (certificate, Token, UNPW)
"user-permissions" : [
{ "permission-name" : "permission-1",
"apiGroups" : ["stable.example.com"],
"resources" : ["secrets", "pods"],
"verbs" : ["get", "watch", "list", "create"]
},
{ "permission-name" : "permission-2",
"apiGroups" : [""],
"resources" : ["configmaps"],
"verbs" : ["*"]
}
]
}
}
}
Return Status: 200 (OK)
Return Body:
{
"name" : "logical-cloud-1",
"logical-cloud-name" : "logical-cloud-1",
"namespace" : "ns-1",
"user" : "user-1"
}
|
...
| Code Block |
|---|
| language | js |
|---|
| title | GET Logical Cloud |
|---|
|
GET
URL: /v2/projects/<project-name>/logical-clouds/<logical-cloud-name>
RESPONSE BODY:
{
"metadata" : {
"logical-cloud-name": "lc-1", //unique name for the record
"description": "logical cloud for walmart finance department", //description for the logical cloud
"userData1":"<user data>",
"userData2":"<user data>"
},
"spec" : {
"namespace" : "ns-1", // one namespace per logical cloud
"user" : {
"user-name" : "user-1", //name of user for this cloud (username and logical cloud name would be used as subject for the user key)
"type" : "certificate", //type of authentication credentials used by user (certificate, Token, UNPW)
"user-permissions" : [
{ "permission-name" : "permission-1",
"apiGroups" : ["stable.example.com"],
"resources" : ["secrets", "pods"],
"verbs" : ["get", "watch", "list", "create"]
},
{ "permission-name" : "permission-2",
"apiGroups" : [""],
"resources" : ["configmaps"],
"verbs" : ["*"]
}
],
"clusters" : ["cluster-1", "cluster-2", "cluster-3]
}
}
}
|
...
| Code Block |
|---|
| language | js |
|---|
| title | Update cluster in logical cloud |
|---|
|
URL: /v2/projects/<project-name>/logical-clouds/<logical-cloud-name>/cluster-providers/<cluster-provider-name>/cluster-references/cluster-name
PUT BODY:
{
"loadbalancer-ip" : "0.0.0.0" //IP address of the istio loadbalancer for the logical cloud control plane in the cluster
}
Return Status: 200 (OK)
Return Body:
{
"cluster-name" : "cluster-1"
"loadbalancer-ip" : "0.0.0.0"
} |
...
| Code Block |
|---|
| language | js |
|---|
| title | Get Clusters Associated with logical clouds |
|---|
|
GET
URL: /v2/projects/<project-name>/logical-clouds/<logical-cloud-name>/cluster-providers/<cluster-provider-name>/cluster-references/
RESPONSE BODY:
{ cluster-references : [
{ "cluster-name" : "c1",
"loadbalancer-ip" : "0.0.0.0
},
{ "cluster-name" : "c2",
"loadbalancer-ip" : "x.x.x.x
}
]
}
|
...
| Code Block |
|---|
| language | js |
|---|
| title | Delete Cluster from logical cloud |
|---|
|
DELETE
URL: /v2/projects/<project-name>/logical-clouds/<logical-cloud-name>/cluster-providers/<cluster-provider-name>/cluster-references/<cluster-name>
RESPONSE STATUS: 204
}
|
...