{
    "schema":{
        "bsonType":"object",
        "description":"记录设备访问时产生的会话日志",
        "required":[
        ],
        "permission":{
            "read":false,
            "create":false,
            "update":false,
            "delete":false
        },
        "properties":{
            "_id":{
                "description":"ID，系统自动生成"
            },
            "appid":{
                "bsonType":"string",
                "description":"客户端上报的应用ID"
            },
            "version":{
                "bsonType":"string",
                "description":"客户端上报的应用版本号"
            },
            "platform":{
                "bsonType":"string",
                "description":"客户端上报的平台code"
            },
            "channel":{
                "bsonType":"string",
                "description":"客户端上报的渠道code/场景值"
            },
            "type":{
                "bsonType":"string",
                "description":"会话类型",
                "defaultValue":1,
                "enum":[
                    {
                        "text":"正常进入上报",
                        "value":1
                    },
                    {
                        "text":"后台进前台超时上报",
                        "value":2
                    },
                    {
                        "text":"页面停留超时上报",
                        "value":3
                    }
                ]
            },
            "device_id":{
                "bsonType":"string",
                "description":"客户端携带的设备标识"
            },
            "last_visit_user_id":{
                "bsonType":"string",
                "description":"本次会话最终访问用户的ID, uni-id-users._id，客户端上报"
            },
            "is_first_visit":{
                "bsonType":"int",
                "description":"是否为首次访问",
                "defaultValue":0,
                "enum":[
                    {
                        "text":"否",
                        "value":0
                    },
                    {
                        "text":"是",
                        "value":1
                    }
                ]
            },
            "first_visit_time":{
                "bsonType":"timestamp",
                "description":"用户首次访问时间"
            },
            "last_visit_time":{
                "bsonType":"timestamp",
                "description":"用户最后一次访问时间"
            },
            "total_visit_count":{
                "bsonType":"int",
                "description":"用户累计访问次数，客户端上报"
            },
            "entry_page_id":{
                "bsonType":"string",
                "description":"本次会话入口页面ID, 同uni-stat-pagesd"
            },
            "exit_page_id":{
                "bsonType":"string",
                "description":"本次会话退出页面ID, 同uni-stat-pagesd"
            },
            "page_count":{
                "bsonType":"int",
                "description":"本次会话浏览的页面数"
            },
            "event_count":{
                "bsonType":"int",
                "description":"本次会话产生的事件数"
            },
            "duration":{
                "bsonType":"int",
                "description":"本次会话时长，单位为秒，服务端计算"
            },
            "sdk_version":{
                "bsonType":"string",
                "description":"基础库版本号"
            },
            "platform_version":{
                "bsonType":"string",
                "description":"平台版本，如微信、支付宝宿主App版本号"
            },
            "device_os":{
                "bsonType":"int",
                "description":"设备系统编号，1：安卓，2：iOS，3：PC"
            },
            "device_os_version":{
                "bsonType":"string",
                "description":"设备系统版本"
            },
            "device_net":{
                "bsonType":"string",
                "description":"设备网络型号wifi/3G/4G/"
            },
            "device_vendor":{
                "bsonType":"string",
                "description":"设备供应商 "
            },
            "device_model":{
                "bsonType":"string",
                "description":"设备型号"
            },
            "device_language":{
                "bsonType":"string",
                "description":"设备语言包"
            },
            "device_pixel_ratio":{
                "bsonType":"string",
                "description":"设备像素比 "
            },
            "device_window_width":{
                "bsonType":"string",
                "description":"设备窗口宽度 "
            },
            "device_window_height":{
                "bsonType":"string",
                "description":"设备窗口高度"
            },
            "device_screen_width":{
                "bsonType":"string",
                "description":"设备屏幕宽度"
            },
            "device_screen_height":{
                "bsonType":"string",
                "description":"设备屏幕高度"
            },
            "location_ip":{
                "bsonType":"string",
                "description":"ip"
            },
            "location_latitude":{
                "bsonType":"double",
                "description":"纬度"
            },
            "location_longitude":{
                "bsonType":"double",
                "description":"经度"
            },
            "location_country":{
                "bsonType":"string",
                "description":"国家"
            },
            "location_province":{
                "bsonType":"string",
                "description":"省份"
            },
            "location_city":{
                "bsonType":"string",
                "description":"城市"
            },
            "is_finish":{
                "bsonType":"int",
                "defaultValue":0,
                "description":"本次会话是否结束，0：否，1是",
                "enum":[
                    {
                        "text":"否",
                        "value":0
                    },
                    {
                        "text":"是",
                        "value":1
                    }
                ]
            },
            "create_time":{
                "bsonType":"timestamp",
                "description":"创建时间"
            }
        }
    },
    "index":[
        {
            "IndexName":"create_time",
            "MgoKeySchema":{
                "MgoIndexKeys":[
                    {
                        "Name":"create_time",
                        "Direction":"1"
                    }
                ],
                "MgoIsUnique":false
            }
        },
        {
            "IndexName":"appid",
            "MgoKeySchema":{
                "MgoIndexKeys":[
                    {
                        "Name":"appid",
                        "Direction":"1"
                    }
                ],
                "MgoIsUnique":false
            }
        },
        {
            "IndexName":"version",
            "MgoKeySchema":{
                "MgoIndexKeys":[
                    {
                        "Name":"version",
                        "Direction":"1"
                    }
                ],
                "MgoIsUnique":false
            }
        },
        {
            "IndexName":"platform",
            "MgoKeySchema":{
                "MgoIndexKeys":[
                    {
                        "Name":"platform",
                        "Direction":"1"
                    }
                ],
                "MgoIsUnique":false
            }
        },
        {
            "IndexName":"channel",
            "MgoKeySchema":{
                "MgoIndexKeys":[
                    {
                        "Name":"channel",
                        "Direction":"1"
                    }
                ],
                "MgoIsUnique":false
            }
        },
        {
            "IndexName":"device_id",
            "MgoKeySchema":{
                "MgoIndexKeys":[
                    {
                        "Name":"device_id",
                        "Direction":"1"
                    }
                ],
                "MgoIsUnique":false
            }
        },
        {
            "IndexName":"is_first_visit",
            "MgoKeySchema":{
                "MgoIndexKeys":[
                    {
                        "Name":"is_first_visit",
                        "Direction":"1"
                    }
                ],
                "MgoIsUnique":false
            }
        },
        {
            "IndexName":"page_count",
            "MgoKeySchema":{
                "MgoIndexKeys":[
                    {
                        "Name":"page_count",
                        "Direction":"1"
                    }
                ],
                "MgoIsUnique":false
            }
        }
    ]
}