9.5 KiB
Server Resource
A server resource represents a backend database server.
Resource Operations
Get a server
GET /servers/:name
Get a single server. The :name in the URI must be a valid server name with all whitespace replaced with hyphens. The server names are case-insensitive.
Note: The parameters field contains all custom parameters for servers, including the server weighting parameters.
Response
Status: 200 OK
{
"name": "server1",
"parameters": {
"address": "127.0.0.1",
"port": 3000,
"protocol": "MySQLBackend",
"monitoruser": "maxuser",
"monitorpw": "maxpwd"
},
"status": "Master, Running",
"version": "10.1.22-MariaDB",
"node_id": 3000,
"master_id": -1,
"replication_depth": 0,
"slaves": [
3001
],
"statictics": {
"connections": 0,
"total_connections": 0,
"active_operations": 0
},
"relationships": {
"self": "http://localhost:8989/servers/server1",
"services": [
"http://localhost:8989/services/RW-Split-Router",
"http://localhost:8989/services/Read-Connection-Router"
],
"monitors": [
"http://localhost:8989/monitors/MySQL-Monitor"
]
}
}
Server not found:
Status: 404 Not Found
Supported Request Parameter
pretty
Get all servers
GET /servers
Response
Response contains an array of all servers.
Status: 200 OK
[
{
"name": "server1",
"parameters": {
"address": "127.0.0.1",
"port": 3000,
"protocol": "MySQLBackend",
"monitoruser": "maxuser",
"monitorpw": "maxpwd"
},
"status": "Master, Running",
"version": "10.1.22-MariaDB",
"node_id": 3000,
"master_id": -1,
"replication_depth": 0,
"slaves": [
3001
],
"statictics": {
"connections": 0,
"total_connections": 0,
"active_operations": 0
},
"relationships": {
"self": "http://localhost:8989/servers/server1",
"services": [
"http://localhost:8989/services/RW-Split-Router",
"http://localhost:8989/services/Read-Connection-Router"
],
"monitors": [
"http://localhost:8989/monitors/MySQL-Monitor"
]
}
},
{
"name": "server2",
"parameters": {
"address": "127.0.0.1",
"port": 3001,
"protocol": "MySQLBackend",
"my-weighting-parameter": "3"
},
"status": "Slave, Running",
"version": "10.1.22-MariaDB",
"node_id": 3001,
"master_id": 3000,
"replication_depth": 1,
"slaves": [],
"statictics": {
"connections": 0,
"total_connections": 0,
"active_operations": 0
},
"relationships": {
"self": "http://localhost:8989/servers/server2",
"services": [
"http://localhost:8989/services/RW-Split-Router"
],
"monitors": [
"http://localhost:8989/monitors/MySQL-Monitor"
]
}
}
]
Supported Request Parameter
pretty
Create a server
POST /servers
Create a new server by defining the resource. The posted object must define the name field with the name of the server and the parameters field with JSON object containing values for the address and port parameters. The following is the minimal required JSON object for defining a new server.
{
"name": "test-server",
"parameters": {
"address": "127.0.0.1",
"port": 3003
}
}
Response
Response contains the created resource.
Status: 200 OK
{
"name": "test-server",
"parameters": {
"address": "127.0.0.1",
"port": 3003,
"protocol": "MySQLBackend"
},
"status": "Running",
"node_id": -1,
"master_id": -1,
"replication_depth": -1,
"slaves": [],
"statictics": {
"connections": 0,
"total_connections": 0,
"active_operations": 0
},
"relationships": {
"self": "http://localhost:8989/servers/test-server"
}
}
Invalid JSON body:
Status: 400 Bad Request
Supported Request Parameter
pretty
Update a server
PUT /servers/:name
The :name in the URI must map to a server name with all whitespace replaced with hyphens and the request body must be a valid JSON document representing the modified server. If the server in question is not found, a 404 Not Found response is returned.
Modifiable Fields
The following standard server parameter can be modified.
Refer to the documentation on these parameters for valid values.
The server weighting parameters can also be added, removed and updated. To
remove a parameter, define the value of that parameter as the null JSON type
e.g. { "my-param": null }. To add a parameter, add a new key-value pair to
the parameters object with a name that does not conflict with the standard
parameters. To modify a weighting parameter, simply change the value.
In addition to standard parameters, the services and monitors fields of the relationships object can be modified. Removal, addition and modification of the links will change which service and monitors use this server.
For example, removing the first value in the services list in the relationships object from the following JSON document will remove the server1 from the service RW-Split-Router.
Removing a service from a server is analogous to removing the server from the service. Both unlink the two objects from each other.
{
"name": "server1",
"parameters": {
"address": "127.0.0.1",
"port": 3000,
"protocol": "MySQLBackend",
"monitoruser": "maxuser",
"monitorpw": "maxpwd"
},
"status": "Master, Running",
"version": "10.1.22-MariaDB",
"node_id": 3000,
"master_id": -1,
"replication_depth": 0,
"slaves": [
3001
],
"statictics": {
"connections": 0,
"total_connections": 0,
"active_operations": 0
},
"relationships": {
"self": "http://localhost:8989/servers/server1",
"services": [
"http://localhost:8989/services/RW-Split-Router", // This value is removed
"http://localhost:8989/services/Read-Connection-Router"
],
"monitors": [
"http://localhost:8989/monitors/MySQL-Monitor"
]
}
}
Response
Response contains the modified resource.
Status: 200 OK
{
"name": "server1",
"parameters": {
"address": "127.0.0.1",
"port": 3000,
"protocol": "MySQLBackend",
"monitoruser": "maxuser",
"monitorpw": "maxpwd"
},
"status": "Master, Running",
"version": "10.1.22-MariaDB",
"node_id": 3000,
"master_id": -1,
"replication_depth": 0,
"slaves": [
3001
],
"statictics": {
"connections": 0,
"total_connections": 0,
"active_operations": 0
},
"relationships": {
"self": "http://localhost:8989/servers/server1",
"services": [
"http://localhost:8989/services/Read-Connection-Router"
],
"monitors": [
"http://localhost:8989/monitors/MySQL-Monitor"
]
}
}
Server not found:
Status: 404 Not Found
Invalid JSON body:
Status: 400 Bad Request
Supported Request Parameter
pretty
Destroy a server
DELETE /servers/:name
The :name in the URI must map to a server name with all whitespace replaced with hyphens.
A server can only be deleted if the only relations in the relationships object is the self link.
Response
OK:
Status: 204 No Content
Server not found:
Status: 404 Not Found
Server is in use:
Status: 400 Bad Request
TODO: Implement the following features
Get all connections to a server
Get all connections that are connected to a server.
GET /servers/:name/connections
Response
Status: 200 OK
[
{
"state": "DCB in the polling loop",
"role": "Backend Request Handler",
"server": "/servers/db-serv-01",
"service": "/services/my-service",
"statistics": {
"reads": 2197
"writes": 1562
"buffered_writes": 0
"high_water_events": 0
"low_water_events": 0
}
},
{
"state": "DCB in the polling loop",
"role": "Backend Request Handler",
"server": "/servers/db-serv-01",
"service": "/services/my-second-service"
"statistics": {
"reads": 0
"writes": 0
"buffered_writes": 0
"high_water_events": 0
"low_water_events": 0
}
}
]
Supported Request Parameter
fieldsrange
Close all connections to a server
Close all connections to a particular server. This will forcefully close all backend connections.
DELETE /servers/:name/connections
Response
Status: 204 No Content