👩🏿 ♥️ ◻️ Alfa Battle - bagaimana itu, rekaman konferensi dan daftar tugas 🕠 ⏫ 🙀

Pada awal Juni, kami meluncurkan Alfa Battle untuk pengembang Java. Saatnya berbicara tentang bagaimana semuanya berjalan, berbagi video bermanfaat dari pembicara konferensi aliran "Coding of the Future" (Alfa-Bank, Beeline, X5 Retail Group) dan tunjukkan tugas kita. Ngomong-ngomong, tentang tugas. Entah kami melebih-lebihkan dan melebih-lebihkan kemungkinan peserta, atau cuaca biasa-biasa saja, secara umum, dari 1498 peserta dari 50 kota, tidak ada yang tuntas menyelesaikan semua masalah (5 buah). Oleh karena itu, di bawah potongan Anda akan menemukan semua tugas dengan deskripsi dan, jika Anda ingin menyelesaikannya, Anda dapat melakukannya tanpa tenggat waktu. Kami dengan senang hati akan mengundang mereka yang menguasai

... Di akhir posting - tentang strategi baru untuk mempekerjakan spesialis. Ada suatu masa ketika TI Alfa-Bank sebagian besar terkonsentrasi di tiga kota - Moskow, St. Petersburg, Yekaterinburg. Sekarang kita bisa melihat orang-orang dari seluruh negeri. Dan tidak hanya.

Terima kasih kepada semua orang yang menanggapi - ada lebih dari 1.500 orang seperti itu, 198 orang di antaranya mencapai final yang menunjukkan hasil terbaik. Ya, memang tidak mudah: tugas ternyata lebih sulit dari yang diharapkan banyak peserta, dan format kejuaraan online dengan aliran konferensi, sejujurnya, tegang. Tetap saja, 5 jam pemrograman online bukanlah pengalaman retro dalam sebuah tim.

Secara total - tiga pemenang yang menerima hadiah uang tunai, serta undangan untuk bekerja bersama kami dan mitra kejuaraan. Ini dia:

Juara 1: Mikhail Burshtein, Moskow (250.000 rubel)

Juara 2: Alexander Ilyushechkin, Moskow (150.000 rubel)

Juara 3: Pavel Lyubinsky, St. Petersburg (100.000 rubel)

Tugas

# 1 Dimana ATMnya

Detail tugas

Kondisi

-.

REST API IP:8080.

API – api.json.

- API .

: api.alfabank.ru/node/238

API .

: api.alfabank.ru/start

* IP — IP .

* : github.com/evgenyshiryaev/alfa-battle-resources/tree/master/task1

1. deviceId

: GET IP:8080/atms/{deviceId}

:

— 200 AtmResponse

— 404 ErrorResponse ( )

:

GET http://IP:8080/atms/153463
200
{
  "deviceId": 153463,
  "latitude": "55.6610213",
  "longitude": "37.6309405",
  "city": "",
  "location": " ., 4, . 10",
  "payments": false
}

GET http://IP:8080/atms/1
404
{
  “status”: “atm not found”
}

18 .

2. (-)

- — .

3 ! -.

payments=true, (. - API ATMServices).

: GET IP:8080/atms/nearest?latitude=string&longitude=string&payments=boolean

: 200 AtmResponse

:

GET http://IP:8080/atms/nearest?latitude=55.66&longitude=37.63
200
{
  "deviceId": 153463,
  "latitude": "55.6610213",
  "longitude": "37.6309405",
  "city": "",
  "location": " ., 4, . 10",
  "payments": false
}

GET http://IP:8080/atms/nearest?latitude=55.66&longitude=37.63&payments=true
200
{
  "deviceId": 210612,
  "latitude": "55.66442",
  "longitude": "37.628051",
  "city": "",
  "location": " , . 14",
  "payments": true
}

36 .

3.

- .

, .

: GET IP:8080/atms/nearest-with-alfik?latitude=string&longitude=string&alfik=int

: 200 [AtmResponse]

, WebSocket STOMP .

:

mkdir task1 ; cd task1
      

        
        
        
      

    
wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task1/docker-compose.yml
      

        
        
        
      

    
docker-compose up -d

( task1):

docker-compose down

: ws://IP:8100

: { “deviceId”: 0 }

/topic/alfik: { “deviceId”: 0, “alfik”: 0 }

:

 GET http://IP:8080/atms/nearest-with-alfik?latitude=55.66&longitude=37.63&alfik=300000
200
[{
  "deviceId": 153463,
  "latitude": "55.6610213",
  "longitude": "37.6309405",
  "city": "",
  "location": " ., 4, . 10",
  "payments": false
}]

(.. 153463 — 383026 )

:

GET http://IP:8080/atms/nearest-with-alfik?latitude=55.66&longitude=37.63&alfik=400000
200
[{
  "deviceId": 153463,
  "latitude": "55.6610213",
  "longitude": "37.6309405",
  "city": "",
  "location": " ., 4, . 10",
  "payments": false
},
{
  “deviceId": 153465,
  "latitude": "55.6602801",
  "longitude": "37.633823",
  "city": "",
  "location":"  ., 18",
  "payments": false
}]

( , )

# 2 Analisis itu

Detail tugas

Kafka RAW_PAYMENTS .

docker IP:29092 .

Kafka.

:

mkdir task2 ; cd task2
      

        
        
        
      

    
wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task2/data.txt
      

        
        
        
      

    
wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task2/docker-compose.yml
      

        
        
        
      

    
wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task2/start.sh
      

        
        
        
      

    
bash start.sh

.

( task2):

docker-compose down

* IP — IP .

* : github.com/evgenyshiryaev/alfa-battle-resources/tree/master/task2

:

key1:{"ref":"U030306190000188", "categoryId":1, "userId":"XAABAA", "recipientId":"XA3SZV", "desc":"  ", "amount":10.0}

, key1 — .

.

:

Kafka.
.
REST API . 8081.

RAW_PAYMENTS. .

, .

, Kafka .

.

, , . , ( , - ).

:

consumer-group-id. .
consumer-group. , , ,

docker exec -i broker kafka-consumer-groups --bootstrap-server broker:9092 --all-groups --all-topics --reset-offsets --to-earliest --execute

start.sh, . ,

Swagger-

Swagger- api-swagger.json .

key1:{"ref":"ref1", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _1", "amount":10.0}
key2:{"ref":"ref2", "categoryId":2, "userId":"User_1", "recipientId":"User_2", "desc":" _2", "amount":350.56}
key3:{"ref":"ref3", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _3", "amount":700.0}
key4:{"ref":"ref4", "categoryId":3, "userId":"User_1", "recipientId":"User_2", "desc":" _4", "amount":5.99}
key5:{"ref":"ref5", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _5", "amount":10.0}
key6:{"ref":"ref6", "categoryId":2, "userId":"User_2", "recipientId":"User_3", "desc":" _6", "amount":350.56}
key7:{"ref":"ref7", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _7", "amount":890.0}
key8:{"ref":"ref8", "categoryId":3, "userId":"User_3", "recipientId":"User_2", "desc":" _8", "amount":35.99}
key9:{"ref":"ref9", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _9", "amount":890.0}
key10:{"ref":"ref10", "categoryId":3, "userId":"User_3", "recipientId":"User_2", "desc":" _10", "amount":35.9910}
key11:{"ref":"ref11", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _11", "amount":10.0}
key12:{"ref":"ref12", "categoryId":2, "userId":"User_2", "recipientId":"User_3", "desc":" _12", "amount":350.56}
key13:{"ref":"ref13", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _13", "amount":10.0}
key14:{"ref":"ref14", "categoryId":2, "userId":"User_2", "recipientId":"User_3", "desc":" _14", "amount":350.56}
key15:{"ref":"ref15", "categoryId":4, "userId":"User_1", "recipientId":"User_4", "desc":" _15", "amount":15.00}

1.

( categoryId).

, .

.

GET IP:8081/admin/health

200

:

{"status":"UP"}

<h4>GET http://IP:8081/analytic</h4>
200

[
  {
    "userId": "User_3",
    "totalSum": 71.981,
    "analyticInfo": {
      "3": {
        "min": 35.99,
        "max": 35.991,
        "sum": 71.981
      }
    }
  },
  {
    "userId": "User_2",
    "totalSum": 1051.68,
    "analyticInfo": {
      "2": {
        "min": 350.56,
        "max": 350.56,
        "sum": 1051.68
      }
    }
  },
  {
    "userId": "User_1",
    "totalSum": 2891.55,
    "analyticInfo": {
      "1": {
        "min": 10,
        "max": 890,
        "sum": 2520
      },
      "2": {
        "min": 350.56,
        "max": 350.56,
        "sum": 350.56
      },
      "3": {
        "min": 5.99,
        "max": 5.99,
        "sum": 5.99
      },
      "4": {
        "min": 15,
        "max": 15,
        "sum": 15
      }
    }
  }
]

analyticInfo Id .

GET IP:8081/analytic/{userId}

— 200

— 404 + {«status»:”user not found"} ( )

:

GET http://IP:8081/analytic/User_1

{
  "userId": "User_1",
  "totalSum": 2891.55,
  "analyticInfo": {
    "1": {
      "min": 10,
      "max": 890,
      "sum": 2520
    },
    "2": {
      "min": 350.56,
      "max": 350.56,
      "sum": 350.56
    },
    "3": {
      "min": 5.99,
      "max": 5.99,
      "sum": 5.99
    },
    "4": {
      "min": 15,
      "max": 15,
      "sum": 15
    }
  }
}

40 .

2.

. :

GET IP:8081/analytic/{userId}/stats

— 200

— 404 + {«status»:”user not found"} ( )

.

:

GET http://IP:8081/analytic/User_1/stats
 :
{
  "oftenCategoryId": 1,
  "rareCategoryId": 2,
  "maxAmountCategoryId": 1,
  "minAmountCategoryId": 3
}

3.

.

:

, , (recipientId userId )

, .

GET IP:8081/analytic/{userId}/templates

— 200

— 404 + {«status»:”user not found"} ( )

, .

:

GET http://IP:8081/analytic/User_1/templates
 :
[
  {
    "recipientId": "User_2",
    "categoryId": 1,
    "amount": 10
  }
]

# 3 Meja kas gratis

Detail tugas

- .

REST API IP:8082.

API – api.json.

, , , , .

PostgreSQL.

PostgreSQL:

mkdir task3 ; cd task3
      

        
        
        
      

    
wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task3/docker-compose.yml
      

        
        
        
      

    
wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task3/Dockerfile
      

        
        
        
      

    
wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task3/init_db.sql
      

        
        
        
      

    
docker-compose up -d

( task3):

docker-compose down

: IP:5432

DB: alfa_battle

Auth: alfa_battle / qwe123

* IP — IP .

* : github.com/evgenyshiryaev/alfa-battle-resources/tree/master/task3

1. id

: GET IP:8082/branches/{id}

:

— 200 Branches

— 404 ErrorResponse ( )

:

GET http://IP:8082/branches/612
200
{
  "id": 612,
  "title": "",
  "lon": 37.6329,
  "lat": 55.7621,
  "address": " ., 13, . 1"
}

 GET http://IP:8082/branches/1
404
{
  “status”: “branch not found”
}

8 .

2. (-)

-, , 1.

.

, Latitude Longitude.

: GET IP:8082/branches/lat=string&lon=string

: 200 Branches

:

GET http://IP:8082/branches/lat=55.773284&lon=37.624125
200
{
  "id": 631,
  "title": " ",
  "lon": 37.6227,
  "lat": 55.7695,
  "address": " ., 16/1",
  "distance": 430
}

Distance — , , .

28 .

3.

, — , , , , .

.

: GET IP:8082/branches/{id}/predict?dayOfWeek=int&hourOfDay=int

:

— 200 BranchesWithPredicting

— 404 ErrorResponse ( )

:

GET http://IP:8082/branches/612/predict?dayOfWeek=1&hourOfDay=14
200
{
  "id": 612,
  "title": "",
  "lon": 37.6329,
  "lat": 55.7621,
  "address": " ., 13, . 1",
  "dayOfWeek": 1,
  "hourOfDay": 14,
  "predicting": 117
}

dayOfWeek — , 1, 7

hourOfDay — 0 23

Predicting — , , .

:

GET http://IP:8082/branches/1/predict?dayOfWeek=1&hourOfDay=14
404
{
  “status”: “branch not found”
}

.

, , apache-commons-math3

# 4 Pinjaman elastis

Detail tugas

1 2 JSON:

person.json — , :

{
     "ID":"29",
     "DocId":"702821510",
     "FIO":"Phoebe Whitehouse",
     "Birthday":"7/12/1971",
     "Salary":"201.02",
     "Gender":"F"
}

, :

ID — ,

DocId — ( 9 )

FIO —

Birthday — MM/dd/yyyy

Salary — , , .. 201.02 20102 .

Gender —

loans.json — , :

{
     "Loan":"631553",
     "PersonId":"68",
     "Amount":"201.02",
     "StartDate":"6/1/2019",
     "Period":"1"
}

, :

Loan — ,

PersonId —

Amount — , , .. 201.02 20 102

StartDate — MM/dd/yyyy

Period —

, ElasticSearch .

REST- ElasticSearch, . IP:8083

ElasticSearch:

mkdir task4 ; cd task4
      

        
        
        
      

    
wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task4/docker-compose.yml
      

        
        
        
      

    
docker-compose up -d

ElasticSearch IP:9200

( task4):

docker-compose down

* IP — IP .

* : github.com/evgenyshiryaev/alfa-battle-resources/tree/master/task4

ElasticSearch :

persons

Birthday — 1945-05-03
Salary — ,

loans

PersonId — , Document, DocId Persons.
Amount — , .
StartDate — , 1945-05-03
Period — ,

GET IP:8083/admin/health

200

{«status»:«UP»}

ElasicSearch.

POST IP:8083/loans/loadPersons

200

{«status»:«OK»}

ElasicSearch.

, Document, ElasticSearch .

POST IP:8083/loans/loadLoans

200

{«status»:«OK»}

GET http://IP:8083/loans/getPerson/855406656/
200
{
   "docid": "855406656",
   "fio": "Celina Jackson",
   "birthday": "1961-05-22",
   "salary": 69106.0,
   "gender": "F"
}

400 ( )

{

«status»: «person not found»

}

GET http://IP:8083/loans/getLoan/692826/
200
{
   "loan": "692826",
   "amount": 448900,
   "document": "027665876",
   "startdate": "2017-01-16",
   "period": 48
}

400 ( )

{
   "status": "loan not found"
}

, — Document.

GET http://IP:8083/loans/creditHistory/737767072/
200
{
   "countLoan": 4,
   "sumAmountLoans": 1058400.0,
   "loans": [
       {
           "loan": "434224",
           "amount": 7100,
           "document": "737767072",
           "startdate": "2019-09-18",
           "period": 12
       },
       {
           "loan": "917105",
           "amount": 283600,
           "document": "737767072",
           "startdate": "2019-12-22",
           "period": 12
       },
       {
           "loan": "692147",
           "amount": 300800,
           "document": "737767072",
           "startdate": "2016-08-01",
           "period": 24
       },
       {
           "loan": "145020",
           "amount": 466900,
           "document": "737767072",
           "startdate": "2017-01-16",
           "period": 36
       }
   ]
}

, :

countLoan —

sumAmountLoans —

loans —

,

GET http://IP:8083/loans/creditClosed
200
[
   {
       "loan": "222398",
       "amount": 265400,
       "document": "074658188",
       "startdate": "2017-09-22",
       "period": 12
   },
  
       "loan": "826942",
       "amount": 329400,
       "document": "788117788",
       "startdate": "2016-01-29",
       "period": 48
   },
...
]

, ( ElasticSearch).

GET http://IP:8083/loans/loansSortByPersonBirthday
200
[
   {
       "id": null,
       "docid": "840704451",
       "fio": "John Isaac",
       "birthday": "19.08.1989",
       "salary": 58295.0,
       "gender": "M",
       "loans": [
           {
               "loan": "771916",
               "amount": 337600,
               "document": "840704451",
               "startdate": "2019-11-09",
               "period": 48
           },
           {
               "loan": "504544",
               "amount": 358900,
               "document": "840704451",
               "startdate": "2018-06-10",
               "period": 36
           },
           {
               "loan": "699247",
               "amount": 464400,
               "document": "840704451",
               "startdate": "2018-10-30",
               "period": 36
           },
           {
               "loan": "783101",
               "amount": 139300,
               "document": "840704451",
               "startdate": "2017-02-19",
               "period": 36
           }
       ]
   },
   {
       "id": null,
       "docid": "023665566",
       "fio": "Denny Tanner",
       "birthday": "25.03.1989",
       "salary": 80713.0,
       "gender": "M",
       "loans": [
           {
               "loan": "631553",
               "amount": 403000,
               "document": "023665566",
               "startdate": "2019-06-01",
               "period": 12
           },
           {
               "loan": "598452",
               "amount": 198500,
               "document": "023665566",
               "startdate": "2015-09-28",
               "period": 36
           },
           {
               "loan": "151915",
               "amount": 13600,
               "document": "023665566",
               "startdate": "2019-06-15",
               "period": 12
           },
           {
               "loan": "368342",
               "amount": 350500,
               "document": "023665566",
               "startdate": "2017-02-06",
               "period": 48
           },
           {
               "loan": "633056",
               "amount": 482900,
               "document": "023665566",
               "startdate": "2016-07-01",
               "period": 12
           }
       ]
   },
...
]

# 5 Di jarum promo

Detail tugas

.

- .

.

REST API IP:8084 :

/promo – POST - ( , ). .
/receipt – , POST id , (, ), , , .

: /promo, /receipt.

* IP — IP .

* : github.com/evgenyshiryaev/alfa-battle-resources/tree/master/task5

CSV :
API – api.yml

- , -, .

-, - .

- , -, .

2 RoundingMode.HALF_EVEN.

!!! , code review !!!

1. -

:

: POST IP:8084/promo

{}

: 200

: POST IP:8084/receipt

{

«shopId»: 1,

«loyaltyCard»: false,

«positions»:

[

{

«itemId»: «3432166»,

«quantity»: 1

}

]

}

: 200

{

«total»: 141.99,

«discount»: 0.00,

«positions»:

[

{

«id»: «3432166»,

«name»: «...G11 Green .1»,

«price»: 141.99,

«regularPrice»: 141.99

}

]

}

8 .

2. -

/promo - “ ” (LoyaltyCardRule). , .

- , /receipt loyaltyCard=true - , id .

:

: POST IP:8084/promo

{
  "loyaltyCardRules": 
  [
    {
      "shopId": -1,
      "discount": 0.03
    },
    {
      "shopId": 2,
      "discount": 0.05
    }
  ]
}

: 200

: POST IP:8084/receipt

{
  "shopId": 1,
  "loyaltyCard": false,
  "positions":
  [
    {
      "itemId": "3432166",
      "quantity": 1
    }
  ]
}
: 200
{
  "total": 137.73,
  "discount": 4.26,
  "positions":
  [
    {
      "id": "3432166",
      "name": "...G11 Green .1",
      "price": 137.73,
      "regularPrice": 141.99
    }
  ]
}

16 .

3. - N+k

/promo - LoyaltyCardRule ItemCountRule. , .

N+k , N ID k . N=3, k=2:

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Alfa Battle - bagaimana itu, rekaman konferensi dan daftar tugas

Tugas

# 1 Dimana ATMnya

Kondisi

1. deviceId

2. (-)

3.

# 2 Analisis itu

Swagger-

1.

GET IP:8081/admin/health

GET IP:8081/analytic/{userId}

2.

GET IP:8081/analytic/{userId}/stats

3.

GET IP:8081/analytic/{userId}/templates

# 3 Meja kas gratis

1. id

2. (-)

3.

# 4 Pinjaman elastis

,

# 5 Di jarum promo

1. -

2. -

3. - N+k

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