Overview

A database user has access to the database system and can perform various querying or administering operations based on their assigned privileges.

Showing Users

To list all database users:

show().user()

Or retrieves a specific user, such as the one named root:

show().user("root")

Or retrieves the current logged-in user:

show().self()

It returns a table _user with the following fields:

Creating a User

The create().user().params() statement creates a database user.

Syntax

create().user("<username>", "<password>").params({
  graph_privileges: {
    "<graph>": ["<graphPriv>", "<graphPriv>", ...],
    ...
  }, 
  system_privileges: ["<systemPriv>", "<systemPriv>", ...], 
  property_privileges: {
    "node": {
      "<propertyPriv>": [
        ["<graph>", "<schema>", "<property>"],
        ...
      ],
      ...
    },
    "edge": {
      "<propertyPriv>": [
        ["<graph>", "<schema>", "<property>"],
        ...
      ],
      ...
    }
  },
  policies: ["<policyName>", "<policyName>", ...]
})

Examples

To create a user called admin who has all graph and system privileges, and write privilege for all properties, but doesn't have any other policies:

create().user("admin", "U7MRDBFXd2Ab").params({
  graph_privileges: {"*":["READ","INSERT","UPSERT","UPDATE","DELETE","CREATE_SCHEMA","DROP_SCHEMA","ALTER_SCHEMA","SHOW_SCHEMA","RELOAD_SCHEMA","CREATE_PROPERTY","DROP_PROPERTY","ALTER_PROPERTY","SHOW_PROPERTY","CREATE_FULLTEXT","DROP_FULLTEXT","SHOW_FULLTEXT","CREATE_INDEX","DROP_INDEX","SHOW_INDEX","LTE","UFE","CLEAR_JOB","STOP_JOB","SHOW_JOB","ALGO","CREATE_PROJECT","SHOW_PROJECT","DROP_PROJECT","CREATE_HDC_GRAPH","SHOW_HDC_GRAPH","DROP_HDC_GRAPH","COMPACT_HDC_GRAPH","SHOW_VECTOR_INDEX","CREATE_VECTOR_INDEX","DROP_VECTOR_INDEX","SHOW_CONSTRAINT","CREATE_CONSTRAINT","DROP_CONSTRAINT"]}, 
  system_privileges: ["TRUNCATE","COMPACT","CREATE_GRAPH","SHOW_GRAPH","DROP_GRAPH","ALTER_GRAPH","TOP","KILL","STAT","SHOW_POLICY","CREATE_POLICY","DROP_POLICY","ALTER_POLICY","SHOW_USER","CREATE_USER","DROP_USER","ALTER_USER","SHOW_PRIVILEGE","SHOW_META","SHOW_SHARD","ADD_SHARD","DELETE_SHARD","REPLACE_SHARD","SHOW_HDC_SERVER","ADD_HDC_SERVER","DELETE_HDC_SERVER","LICENSE_UPDATE","LICENSE_DUMP","GRANT","REVOKE","SHOW_BACKUP","CREATE_BACKUP","SHOW_VECTOR_SERVER","ADD_VECTOR_SERVER","DELETE_VECTOR_SERVER"],
  property_privileges: {
    "node": {"write": [["*", "*", "*"]]},
    "edge": {"write": [["*", "*", "*"]]}
  }
})

To create a user called johndoe that has:

• Graph privileges: UPDATE for all graphsets
• System privileges: SHOW_POLICY, ALTER_GRAPH
• Property privileges:
  • Node properties: read all node properties
  • Edge properties:
    • write edge properties value and time in the graphset Tax
  • deny (Do not allow read and write) edge property score of the schema rate in the graphset miniCircle
• Policies: manager

create().user("johndoe", "mHMUUjQWG46z").params({
  graph_privileges: {"*": ["UPDATE"]}, 
  system_privileges: ["SHOW_POLICY", "ALTER_GRAPH"],
  property_privileges: {
    "node": {
      "read": [
        ["*", "*", "*"]
      ]
    },
    "edge": {
      "write": [
        ["Tax", "*", "value"],
        ["Tax", "*", "time"]
      ],
      "deny": [
        ["miniCircle", "rates", "score"]
      ]
    }
  },
  policies: ["manager"]
})

Altering a User

You can alter the password, the privileges and policies of a user using the alter().user().set() statement. Note that only the mentioned items will be updated, others remain unchanged.

Syntax

alter().user("<username>").set({
  password: "<password>",
  graph_privileges: {
    "<graph>": ["<graphPriv>", "<graphPriv>", ...],
    ...
  }, 
  system_privileges: ["<systemPriv>", "<systemPriv>", ...], 
  property_privileges: {
    "node": {
      "<propertyPriv>": [
        ["<graph>", "<schema>", "<property>"],
        ...
      ],
      ...
    },
    "edge": {
      "<propertyPriv>": [
        ["<graph>", "<schema>", "<property>"],
        ...
      ],
      ...
    }
  },
  policies: ["<policyName>", "<policyName>", ...]
})

Examples

To modify user admin's password while keeping all privileges and policies unchanged:

alter().user("admin").set({password: "zdcsQ7QFaCCE"})

To modify user johndoe's graph and property privileges, and policies, while keeping password and system privileges unchanged:

alter().user("johndoe").set({
  graph_privileges: {"*": ["UPDATE", "DELETE"]},
  property_privileges: {
    "node": {
      "write": [["miniCircle","*","*"]]
    },
    "edge": {
      "write": [["miniCircle","*","*"]]
    }
  },
  policies: ["sales"]
})

Granting to a User

You can grant additional privileges and policies to a user using the grant().user().params() statement. Note that the existing privileges and policies the user has remain unchanged.

Syntax

grant().user("<userName>").params({
  graph_privileges: {
    "<graph>": ["<graphPriv>", "<graphPriv>", ...],
    ...
  }, 
  system_privileges: ["<systemPriv>", "<systemPriv>", ...], 
  property_privileges: {
    "node": {
      "<propertyPriv>": [
        ["<graph>", "<schema>", "<property>"],
        ...
      ],
      ...
    },
    "edge": {
      "<propertyPriv>": [
        ["<graph>", "<schema>", "<property>"],
        ...
      ],
      ...
    }
  },
  policies: ["<policyName>", "<policyName>", ...]
})

Examples

To grant the graph privileges CREATE_SCHEMA and DROP_SCHEMA of the graphset Tax, and system privilege ADD_HDC_SERVER to the user ultipaUsr:

grant().user("ultipaUsr").params({
  graph_privileges: {"Tax": ["CREATE_SCHEMA", "DROP_SCHEMA"]}, 
  system_privileges: ["ADD_HDC_SERVER"]
})

Revoking from a User

You can revoke specified privileges and policies from a user using the revoke().user().params() statement.

Syntax

revoke().user("<userName>").params({
  graph_privileges: {
    "<graph>": ["<graphPriv>", "<graphPriv>", ...],
    ...
  }, 
  system_privileges: ["<systemPriv>", "<systemPriv>", ...], 
  property_privileges: {
    "node": {
      "<propertyPriv>": [
        ["<graph>", "<schema>", "<property>"],
        ...
      ],
      ...
    },
    "edge": {
      "<propertyPriv>": [
        ["<graph>", "<schema>", "<property>"],
        ...
      ],
      ...
    }
  },
  policies: ["<policyName>", "<policyName>", ...]
})

Examples

To revoke the graph privileges CREATE_SCHEMA and DROP_SCHEMA of the graphset Tax, and system privilege ADD_HDC_SERVER from the user ultipaUsr:

revoke().user("ultipaUsr").params({
  graph_privileges: {"Tax": ["CREATE_SCHEMA", "DROP_SCHEMA"]}, 
  system_privileges: ["ADD_HDC_SERVER"]
})

Dropping a User

You can drop a user using the drop().user() statement.

To drop the user johndoe:

drop().user("johndoe")