概述

策略是专为特定用户角色制定的一组权限，通常包含多项权限和其他策略。合理设计和使用策略可实现基于角色的访问控制。

显示策略

获取数据库中的所有策略：

show().policy()

获取一个特定策略信息，如名为manager的策略：

show().policy("manager")

返回的_policy表包含策略信息：

创建策略

使用语句create().policy().params()在数据库中创建策略。

语法

create().policy("<name>").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>", ...]
})

示例

创建名为superADM的策略，包含所有图集权限、所有系统权限以及对所有属性的write权限，但不包含其他策略：

create().policy("superADM").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"]},
  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","SHOW_HDC_SERVER","ADD_HDC_SERVER","DELETE_HDC_SERVER","LICENSE_UPDATE","LICENSE_DUMP"],
  property_privileges: {
    "node": {"write": [["*", "*", "*"]]},
    "edge": {"write": [["*", "*", "*"]]}
  }
})

创建名为Tester的策略，其中包含：

• 图集权限：所有图集的UPDATE权限
• 系统权限：SHOW_POLICY，ALTER_GRAPH
• 属性权限：
  • 点属性：所有点属性的read权限
  • 边属性：
    • 图集Tax所有边属性value和time的write权限
    • 禁止图集miniCircle中rate schema的属性score的read和write权限
• 策略：manager

create().policy("Tester").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"]
})

修改策略

使用语句alter().policy().set()修改策略中包含的图集权限、系统权限、属性权限和策略。请留意，语句中包含的权限类型或策略会被修改，其余保持不变。

语法

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

示例

修改策略sales的图集权限，其他类型的权限和策略保持不变：

alter().policy("Tester").set({graph_privileges: {"Tax": ["UPDATE"]}})

修改策略manager中的图集权限、属性权限和策略，系统权限保持不变：

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

给策略追加权限

使用语句grant().policy().params()为策略追加指定的图集权限、系统权限、属性权限和策略。请留意，策略原本包含的权限和策略保持不变。

语法

grant().policy("<policyName>").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>", ...]
})

示例

给策略manager追加图集Tax的权限CREATE_SCHEMA和DROP_SCHEMA以及系统权限ADD_HDC_SERVER：

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

从策略撤销权限

使用语句revoke().policy().params()从策略撤销指定的图集权限、系统权限、属性权限和策略。

语法

revoke().policy("<policyName>").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>", ...]
})

示例

从策略manager撤销图集Tax的权限CREATE_SCHEMA和DROP_SCHEMA以及系统权限ADD_HDC_SERVER：

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

删除策略

使用语句drop().policy()删除策略。

删除策略manager：

drop().policy("manager")