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use std::{error::Error as StdError, sync::Arc};
use async_trait::async_trait;
use futures::TryStreamExt;
use mongodb::{
bson::{self, doc, Bson, DateTime, Document},
options::FindOptions,
Cursor as MongoDbCursor, Database,
};
use serde::{Deserialize, Serialize};
use super::super::application_dldata::{
ApplicationDlData, ApplicationDlDataModel, Cursor, ListOptions, ListQueryCond, QueryCond,
SortKey, UpdateQueryCond, Updates, EXPIRES,
/// Model instance.
pub struct Model {
/// The associated database connection.
conn: Arc<Database>,
}
/// Cursor instance.
struct DbCursor {
/// The associated collection cursor.
cursor: MongoDbCursor<Schema>,
/// (Useless) only for Cursor trait implementation.
offset: u64,
/// MongoDB schema.
#[derive(Deserialize, Serialize)]
struct Schema {
#[serde(rename = "dataId")]
pub data_id: String,
pub proc: DateTime,
#[serde(skip_serializing_if = "Option::is_none")]
pub resp: Option<DateTime>,
pub status: i32,
#[serde(rename = "unitId")]
pub unit_id: String,
#[serde(rename = "deviceId", skip_serializing_if = "Option::is_none")]
pub device_id: Option<String>,
#[serde(rename = "networkCode", skip_serializing_if = "Option::is_none")]
pub network_code: Option<String>,
#[serde(rename = "networkAddr", skip_serializing_if = "Option::is_none")]
pub network_addr: Option<String>,
pub profile: String,
pub data: String,
pub extension: Option<Document>,
const COL_NAME: &'static str = "applicationDlData";
impl Model {
/// To create the model instance with a database connection.
pub async fn new(conn: Arc<Database>) -> Result<Self, Box<dyn StdError>> {
let model = Model { conn };
model.init().await?;
Ok(model)
#[async_trait]
impl ApplicationDlDataModel for Model {
async fn init(&self) -> Result<(), Box<dyn StdError>> {
let indexes = vec![
doc! {"name": "dataId_1", "key": {"dataId": 1}, "unique": true},
doc! {"name": "status_1", "key": {"status": 1}},
doc! {"name": "unitId_1", "key": {"unitId": 1}},
doc! {"name": "deviceId_1", "key": {"deviceId": 1}},
doc! {"name": "networkCode_1", "key": {"networkCode": 1}},
doc! {"name": "networkAddr_1", "key": {"networkAddr": 1}},
doc! {"name": "profile_1", "key": {"profile": 1}},
doc! {"name": "proc_1", "key": {"proc": 1}, "expireAfterSeconds": EXPIRES},
doc! {"name": "resp_1", "key": {"resp": 1}},
];
let command = doc! {
"createIndexes": COL_NAME,
"indexes": indexes,
self.conn.run_command(command, None).await?;
Ok(())
async fn count(&self, cond: &ListQueryCond) -> Result<u64, Box<dyn StdError>> {
let filter = get_list_query_filter(cond);
let count = self
.conn
.collection::<Schema>(COL_NAME)
.count_documents(filter, None)
.await?;
Ok(count)
async fn list(
&self,
opts: &ListOptions,
cursor: Option<Box<dyn Cursor>>,
) -> Result<(Vec<ApplicationDlData>, Option<Box<dyn Cursor>>), Box<dyn StdError>> {
let mut cursor = match cursor {
None => {
let filter = get_list_query_filter(opts.cond);
let options = get_find_options(opts);
Box::new(DbCursor::new(
self.conn
.find(filter, options)
.await?,
))
Some(cursor) => cursor,
let mut count: u64 = 0;
let mut list = Vec::new();
while let Some(item) = cursor.try_next().await? {
list.push(item);
if let Some(cursor_max) = opts.cursor_max {
count += 1;
if count >= cursor_max {
return Ok((list, Some(cursor)));
Ok((list, None))
async fn add(&self, data: &ApplicationDlData) -> Result<(), Box<dyn StdError>> {
let item = Schema {
data_id: data.data_id.clone(),
proc: data.proc.into(),
resp: match data.resp {
None => None,
Some(resp) => Some(resp.into()),
},
status: data.status,
unit_id: data.unit_id.clone(),
device_id: data.device_id.clone(),
network_code: data.network_code.clone(),
network_addr: data.network_addr.clone(),
profile: data.profile.clone(),
data: data.data.clone(),
extension: match data.extension.as_ref() {
Some(extension) => Some(bson::to_document(extension)?),
.insert_one(item, None)
async fn del(&self, cond: &QueryCond) -> Result<(), Box<dyn StdError>> {
let filter = get_query_filter(cond);
.delete_many(filter, None)
async fn update(
cond: &UpdateQueryCond,
updates: &Updates,
) -> Result<(), Box<dyn StdError>> {
let filter = get_update_query_filter(cond, updates.status);
if let Some(updates) = get_update_doc(updates) {
.update_one(filter, updates, None)
return Ok(());
impl DbCursor {
/// To create the cursor instance with a collection cursor.
pub fn new(cursor: MongoDbCursor<Schema>) -> Self {
DbCursor { cursor, offset: 0 }
impl Cursor for DbCursor {
async fn try_next(&mut self) -> Result<Option<ApplicationDlData>, Box<dyn StdError>> {
if let Some(item) = self.cursor.try_next().await? {
self.offset += 1;
return Ok(Some(ApplicationDlData {
data_id: item.data_id,
proc: item.proc.into(),
resp: match item.resp {
status: item.status,
unit_id: item.unit_id,
device_id: item.device_id,
network_code: item.network_code,
network_addr: item.network_addr,
profile: item.profile,
data: item.data,
extension: match item.extension {
Some(extension) => Some(bson::from_document(extension)?),
}));
Ok(None)
fn offset(&self) -> u64 {
self.offset
/// Transforms query conditions to the MongoDB document.
fn get_query_filter(cond: &QueryCond) -> Document {
let mut filter = Document::new();
if let Some(value) = cond.unit_id {
filter.insert("unitId", value);
if let Some(value) = cond.device_id {
filter.insert("deviceId", value);
if let Some(value) = cond.network_code {
filter.insert("networkCode", value);
if let Some(value) = cond.network_addr {
filter.insert("networkAddr", value);
let mut time_doc = Document::new();
if let Some(value) = cond.proc_gte {
time_doc.insert("$gte", Bson::DateTime(value.into()));
if let Some(value) = cond.proc_lte {
time_doc.insert("$lte", Bson::DateTime(value.into()));
if time_doc.len() > 0 {
filter.insert("proc", time_doc);
filter
fn get_list_query_filter(cond: &ListQueryCond) -> Document {
if let Some(value) = cond.profile {
filter.insert("profile", value);
time_doc = Document::new();
if let Some(value) = cond.resp_gte {
if let Some(value) = cond.resp_lte {
filter.insert("resp", time_doc);
/// Transforms model options to the options.
fn get_find_options(opts: &ListOptions) -> FindOptions {
let mut options = FindOptions::builder().build();
if let Some(offset) = opts.offset {
options.skip = Some(offset);
if let Some(limit) = opts.limit {
if limit > 0 {
options.limit = Some(limit as i64);
if let Some(sort_list) = opts.sort.as_ref() {
if sort_list.len() > 0 {
let mut sort_opts = Document::new();
for cond in sort_list.iter() {
let key = match cond.key {
SortKey::Proc => "proc",
SortKey::Resp => "resp",
SortKey::NetworkCode => "networkCode",
SortKey::NetworkAddr => "networkAddr",
if cond.asc {
sort_opts.insert(key.to_string(), 1);
} else {
sort_opts.insert(key.to_string(), -1);
options.sort = Some(sort_opts);
options
fn get_update_query_filter(cond: &UpdateQueryCond, status: i32) -> Document {
let mut document = doc! {"dataId": cond.data_id};
if status >= 0 {
document.insert("status", doc! {"$ne": 0});
document.insert("status", doc! {"$lt": status});
document
/// Transforms the model object to the MongoDB document.
fn get_update_doc(updates: &Updates) -> Option<Document> {
let document = doc! {
"resp": DateTime::from_chrono(updates.resp),
"status": updates.status,
Some(doc! {"$set": document})