[+] release .whl

1. update dependencies;
  2. partially add tickers retrieval and parsing;

deps/test-task-2025-06-30-v1/.dockerignore

@@ -0,0 +1,5 @@
+.venv
+tmp
+.git
+.env
+build

deps/test-task-2025-06-30-v1/.gitattributes

@@ -0,0 +1 @@
+releases/whl/** filter=lfs diff=lfs merge=lfs -text

deps/test-task-2025-06-30-v1/.gitignore

@@ -0,0 +1,6 @@
+!.tmuxp/
+!python
+.env/
+releases/tar
+build
+!releases/whl/**

deps/test-task-2025-06-30-v1/.tmuxp/v1.yaml

@@ -0,0 +1,9 @@
+session_name: test-task-2025-06-30-v1
+start_directory: ${PWD}/deps/test-task-2025-06-30-v1
+windows:
+- focus: 'true'
+  layout: 5687,98x12,0,0,18
+  options: {}
+  panes:
+  - pane
+  window_name: zsh

deps/test-task-2025-06-30-v1/Makefile

@@ -0,0 +1,62 @@
+ENV_PATH ?= .venv
+PYTHON_PATH = $(ENV_PATH)/bin/python3
+PYTHON_VERSION ?= 3.10
+UV_ARGS ?= --offline
+DOCKER ?= podman
+COMPOSE ?= podman compose
+
+venv_extract_requirements:
+	$(ENV_PATH)/bin/tomlq \
+	-r '.project.dependencies | join("\n")' \
+	pyproject.toml > requirements.in
+
+venv_compile:
+	uv pip compile \
+	$(UV_ARGS) \
+	-p $(PYTHON_VERSION) \
+	--generate-hashes \
+	requirements.in  > \
+	requirements.txt
+
+
+venv:
+	uv \
+		venv \
+		-p 3.13 \
+		$(UV_ARGS) \
+		--seed \
+		$(ENV_PATH)
+	uv \
+		pip install \
+		$(UV_ARGS) \
+		-p $(ENV_PATH) \
+		-r requirements.txt
+
+pyright:
+	$(ENV_PATH)/bin/python3 -m pyright \
+		-p pyproject.toml \
+		--pythonpath $(PYTHON_PATH)
+
+
+compose_env:
+	cat docker/postgresql/.env .env/postgresql.env > .env/postgresql.patched.env
+	cat docker/web/.env .env/web.env > .env/web.patched.env
+
+compose_build_web:
+	$(COMPOSE) build web
+
+git-release:
+	git archive \
+		--format=tar \
+		-o "releases/tar/repo-$$(git describe --tags).tar" \
+		HEAD
+
+ALEMBIC_CMD ?= --help
+alembic:
+	$(ENV_PATH)/bin/alembic \
+	-c pyproject.toml \
+	$(ALEMBIC_CMD)
+
+deploy_wheel:
+	make pyright
+	$(PYTHON_PATH) -m build -o releases/whl -w -n

deps/test-task-2025-06-30-v1/docker-compose.yml

@@ -0,0 +1,76 @@
+services:
+  redis:
+    image: docker.io/redis:latest-alpine@sha256:e71b4cb00ea461ac21114cff40ff12fb8396914238e1e9ec41520b2d5a4d3423
+    ports:
+      - 127.0.0.1:9004:6379
+
+  web: &web
+    image: online.fxreader.pr34.test_task_2025_06_30_v1:dev
+    build:
+      context: .
+      dockerfile: ./docker/web/Dockerfile
+      target: web
+    env_file: .env/web.env
+    logging:
+      driver: "json-file"
+      options:
+        max-size: 10m
+        max-file: "3"
+    deploy:
+      resources:
+        limits:
+          cpus: '0.5'
+          memory: 128M
+
+  web-dev:
+    <<: *web
+    volumes:
+      - .:/app:ro
+      - ./tmp/cache:/app/tmp/cache:rw
+
+  emcont_worker:
+    <<: *web
+    image: online.fxreader.pr34.test_task_2025_06_30_v1:dev
+    environment:
+    command:
+      - python3
+      - -m
+      - online.fxreader.pr34.test_task_2025_06_30_v1.async_api.app
+
+  postgresql:
+    image: docker.io/postgres:14.18-bookworm@sha256:c0aab7962b283cf24a0defa5d0d59777f5045a7be59905f21ba81a20b1a110c9
+    # restart: always
+    # set shared memory limit when using docker compose
+    shm_size: 128mb
+    volumes:
+      - postgresql_data:/var/lib/postgresql/data/:rw
+    # or set shared memory limit when deploy via swarm stack
+    #volumes:
+    #  - type: tmpfs
+    #    target: /dev/shm
+    #    tmpfs:
+    #      size: 134217728 # 128*2^20 bytes = 128Mb
+    env_file: .env/postgresql.patched.env
+    # environment:
+    #   POSTGRES_PASSWORD: example
+    ports:
+      - 127.0.0.1:9002:5432
+    logging:
+      driver: "json-file"
+      options:
+        max-size: 10m
+        max-file: "3"
+    deploy:
+      resources:
+        limits:
+          cpus: '0.5'
+          memory: 128M
+
+  adminer:
+      image: docker.io/adminer:standalone@sha256:730215fe535daca9a2f378c48321bc615c8f0d88668721e0eff530fa35b6e8f6
+      ports:
+        - 127.0.0.1:9001:8080
+
+
+volumes:
+  postgresql_data:

deps/test-task-2025-06-30-v1/docker/postgresql/.env

@@ -0,0 +1,3 @@
+PGDATA=/var/lib/postgresql/data/pgdata
+POSTGRES_USER=tickers
+POSTGRES_DB=tickers

deps/test-task-2025-06-30-v1/docker/web/.env

@@ -0,0 +1 @@
+# DB_URL=

deps/test-task-2025-06-30-v1/docker/web/Dockerfile

@@ -0,0 +1,50 @@
+FROM docker.io/library/python:3.12@sha256:6121c801703ec330726ebf542faab113efcfdf2236378c03df8f49d80e7b4180 AS base
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+WORKDIR /app
+
+COPY docker/web/apt.requirements.txt docker/web/apt.requirements.txt
+RUN apt-get update \
+    && apt-get install -y $(cat docker/web/apt.requirements.txt)
+
+RUN \
+	pip3 install \
+	--break-system-packages uv
+
+COPY requirements.txt requirements.txt
+
+RUN \
+	--mount=type=bind,source=releases/whl,target=/app/releases/whl \
+	--mount=type=cache,target=/root/.cache/pip \
+	--mount=type=cache,target=/root/.cache/uv \
+	uv pip \
+	install \
+	--system \
+	--break-system-packages \
+	-f releases/whl \
+	-r requirements.txt
+
+WORKDIR /app
+RUN apt-get update -yy && apt-get install -yy tini
+
+FROM base as web
+
+RUN \
+	--mount=type=bind,source=releases/whl,target=/app/releases/whl \
+	--mount=type=cache,target=/root/.cache/pip \
+	--mount=type=cache,target=/root/.cache/uv \
+	uv pip \
+	install \
+	--system \
+	--break-system-packages \
+	--no-index \
+	-f releases/whl \
+	'online.fxreader.pr34.test_task_2025_06_30_v1==0.1'
+
+ENTRYPOINT ["tini", "--"]
+CMD [ \
+	"python3", \
+	"-m", \
+	"online.fxreader.pr34.test_task_2025_06_30_v1.async_api.app" \
+]

deps/test-task-2025-06-30-v1/docker/web/apt.requirements.txt

@@ -0,0 +1 @@
+wget tar git curl

deps/test-task-2025-06-30-v1/docs/readme.md

@@ -0,0 +1,89 @@
+# Requirements
+
+Tickers of interest:
+- EURUSD
+- USDJPY
+- GBPUSD
+- AUDUSD
+- USDCAD
+
+Rest API - https://rates.emcont.com
+
+Scrape every second;
+
+Schema:
+	Ticker:
+		id: foreign_key market
+		timestamp: datetime
+		# (ask + bid) / 2
+		value: decimal
+
+Store up to 30 minutes of recent tickers;
+
+Return via websocket up to 30 minutes of recent tickers;
+
+# AsyncAPI
+
+```yaml
+AsyncAPI:
+	Endpoints:
+		subscribe:
+			Request: SubscribeAction
+			Response: AssetHistoryResponse | AssetTickerResponse
+		list:
+			Request: AssetsAction
+			Response: AssetsResponse
+	Schema:
+		SubscribeAction:
+			action: Literal['subscribe']
+			message:
+				assetId: 1
+		AssetHistoryResponse:
+			action: Literal['asset_history']
+			message:
+				points:
+					- assetName: EURUSD
+						time: 1455883484
+						assetId: 1
+						value: 1.110481
+					- assetName: EURUSD
+						time: 1455883485
+						assetId: 1
+						value: 1.110948
+					- assetName: EURUSD
+						time: 1455883486
+						assetId: 1
+						value: 1.111122
+		AssetTickerResponse:
+			action: Literal['point']
+			message:
+				assetName: EURUSD
+				time: 1455883484
+				assetId: 1
+				value: 1.110481
+		AssetsAction:
+			action: Literal['assets']
+			message: {}
+		AssetsResponse:
+			action: Literal['assets']
+			message:
+				assets:
+					- id: 1
+						name: EURUSD
+					- id: 2
+						name: USDJPY
+					- id: 3
+						name: GBPUSD
+					- id: 4
+						name: AUDUSD
+					- id: 5
+						name: USDCAD
+```
+
+# Services:
+
+``` yaml
+web:
+	ports:
+		- 8080:80
+```

deps/test-task-2025-06-30-v1/pyproject.toml

@@ -0,0 +1,229 @@
+[project]
+description = 'test task for websocket with crypto tickers'
+requires-python = '>= 3.10'
+maintainers = [
+  { name = 'Siarhei Siniak', email = 'siarheisiniak@gmail.com' },
+]
+classifiers = [
+  'Programming Language :: Python',
+]
+
+name = 'online.fxreader.pr34.test_task_2025_06_30_v1'
+version = '0.1.1'
+
+dependencies = [
+	'alembic',
+	'fastapi',
+	'uvicorn',
+	'websockets',
+	'uvloop',
+	'tomlq',
+	'mypy',
+	'marisa-trie',
+	'pydantic',
+	'asyncpg',
+	'pydantic-settings',
+	'tomlkit',
+	'tomlq',
+	'numpy',
+	'cryptography',
+	'mypy',
+	'pyright',
+	'ruff',
+	'ipython',
+	'ipdb',
+	'requests',
+	'types-requests',
+	'aiohttp',
+	'build',
+	'wheel',
+	'setuptools',
+	'setuptools-scm',
+]
+
+[build-system]
+requires = ['build', 'wheel', 'setuptools', 'setuptools-scm']
+build-backend = 'setuptools.build_meta'
+
+[tool.setuptools]
+include-package-data = false
+[tool.setuptools.package-dir]
+'online.fxreader.pr34.test_task_2025_06_30_v1' = 'python/online/fxreader/pr34/test_task_2025_06_30_v1'
+
+[tool.alembic]
+script_location = 'python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/alembic'
+prepend_sys_path = ['python']
+
+# sqlalchemy.url = 'asdfasdf:/asdfasdfa'
+
+[tool.ruff]
+line-length = 160
+target-version = 'py310'
+# builtins = ['_', 'I', 'P']
+include = [
+    # 'follow_the_leader/**/*.py',
+    #'*.py',
+    # '*.recipe',
+    'python/**/*.py',
+    'python/**/*.pyi',
+]
+exclude = [
+    '.venv',
+]
+
+[tool.ruff.format]
+quote-style = 'single'
+indent-style = 'tab'
+skip-magic-trailing-comma = false
+
+
+[tool.ruff.lint]
+ignore = [
+    'E402', 'E722', 'E741', 'W191', 'E101', 'E501', 'I001', 'F401', 'E714',
+    'E713',
+    # remove lambdas later on
+    'E731',
+    # fix this too
+    'E712',
+    'E703',
+    # remove unused variables, or fix a bug
+    'F841',
+    # fix * imports
+    'F403',
+    # don't care about trailing new lines
+    'W292',
+
+]
+select = ['E', 'F', 'I', 'W', 'INT']
+
+
+[tool.ruff.lint.isort]
+detect-same-package = true
+# extra-standard-library = ["aes", "elementmaker", "encodings"]
+# known-first-party = ["calibre_extensions", "calibre_plugins", "polyglot"]
+# known-third-party = ["odf", "qt", "templite", "tinycss", "css_selectors"]
+relative-imports-order = "closest-to-furthest"
+split-on-trailing-comma = true
+section-order = [
+    # '__python__',
+    "future",
+    "standard-library", "third-party", "first-party", "local-folder"
+]
+force-wrap-aliases = true
+
+# [tool.ruff.lint.isort.sections]
+# '__python__' = ['__python__']
+
+[tool.pylsp-mypy]
+enabled = false
+
+[tool.pyright]
+include = [
+    #'../../../../../follow_the_leader/views2/payments.py',
+    #'../../../../../follow_the_leader/logic/payments.py',
+    #'../../../../../follow_the_leader/logic/paypal.py',
+    'python/**/*.py',
+    'python/**/*.pyi',
+]
+# stubPath = '../mypy-stubs'
+extraPaths = [
+]
+#strict = ["src"]
+
+analyzeUnannotatedFunctions = true
+disableBytesTypePromotions = true
+strictParameterNoneValue = true
+enableTypeIgnoreComments = true
+enableReachabilityAnalysis = true
+strictListInference = true
+strictDictionaryInference = true
+strictSetInference = true
+deprecateTypingAliases = false
+enableExperimentalFeatures = false
+reportMissingTypeStubs ="error"
+reportMissingModuleSource = "warning"
+reportInvalidTypeForm = "error"
+reportMissingImports = "error"
+reportUndefinedVariable = "error"
+reportAssertAlwaysTrue = "error"
+reportInvalidStringEscapeSequence = "error"
+reportInvalidTypeVarUse = "error"
+reportSelfClsParameterName = "error"
+reportUnsupportedDunderAll = "error"
+reportUnusedExpression = "error"
+reportWildcardImportFromLibrary = "error"
+reportAbstractUsage = "error"
+reportArgumentType = "error"
+reportAssertTypeFailure = "error"
+reportAssignmentType = "error"
+reportAttributeAccessIssue = "error"
+reportCallIssue = "error"
+reportGeneralTypeIssues = "error"
+reportInconsistentOverload = "error"
+reportIndexIssue = "error"
+reportInvalidTypeArguments = "error"
+reportNoOverloadImplementation = "error"
+reportOperatorIssue = "error"
+reportOptionalSubscript = "error"
+reportOptionalMemberAccess = "error"
+reportOptionalCall = "error"
+reportOptionalIterable = "error"
+reportOptionalContextManager = "error"
+reportOptionalOperand = "error"
+reportRedeclaration = "error"
+reportReturnType = "error"
+reportTypedDictNotRequiredAccess = "error"
+reportPrivateImportUsage = "error"
+reportUnboundVariable = "error"
+reportUnhashable = "error"
+reportUnusedCoroutine = "error"
+reportUnusedExcept = "error"
+reportFunctionMemberAccess = "error"
+reportIncompatibleMethodOverride = "error"
+reportIncompatibleVariableOverride = "error"
+reportOverlappingOverload = "error"
+reportPossiblyUnboundVariable = "error"
+reportConstantRedefinition = "error"
+#reportDeprecated = "error"
+reportDeprecated = "warning"
+reportDuplicateImport = "error"
+reportIncompleteStub = "error"
+reportInconsistentConstructor = "error"
+reportInvalidStubStatement = "error"
+reportMatchNotExhaustive = "error"
+reportMissingParameterType = "error"
+reportMissingTypeArgument = "error"
+reportPrivateUsage = "error"
+reportTypeCommentUsage = "error"
+reportUnknownArgumentType = "error"
+reportUnknownLambdaType = "error"
+reportUnknownMemberType = "error"
+reportUnknownParameterType = "error"
+reportUnknownVariableType = "error"
+#reportUnknownVariableType = "warning"
+reportUnnecessaryCast = "error"
+reportUnnecessaryComparison = "error"
+reportUnnecessaryContains = "error"
+#reportUnnecessaryIsInstance = "error"
+reportUnnecessaryIsInstance = "warning"
+reportUnusedClass = "error"
+#reportUnusedImport = "error"
+reportUnusedImport = "none"
+# reportUnusedFunction = "error"
+reportUnusedFunction = "warning"
+#reportUnusedVariable = "error"
+reportUnusedVariable = "warning"
+reportUntypedBaseClass = "error"
+reportUntypedClassDecorator = "error"
+reportUntypedFunctionDecorator = "error"
+reportUntypedNamedTuple = "error"
+reportCallInDefaultInitializer = "none"
+reportImplicitOverride = "none"
+reportImplicitStringConcatenation = "none"
+reportImportCycles = "none"
+reportMissingSuperCall = "none"
+reportPropertyTypeMismatch = "none"
+reportShadowedImports = "none"
+reportUninitializedInstanceVariable = "none"
+reportUnnecessaryTypeIgnoreComment = "none"
+reportUnusedCallResult = "none"

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/async_api/app.py

@@ -0,0 +1,68 @@
+import asyncio
+import datetime
+import logging
+# import os
+from ..tickers_retrieval.emcont import Emcont
+from ..tickers.models import Ticker
+from ..tickers.logic import ticker_store_multiple, markets_get_by_symbol
+from .db import create_engine
+import sqlalchemy.ext.asyncio
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.ext.asyncio import async_sessionmaker
+
+from typing import Any
+
+logger = logging.getLogger(__name__)
+
+async def run() -> None:
+	async_session = create_engine()
+
+	async def store_cb(
+		rates: list[Emcont.rates_get_t.data_t.rate_t],
+		timestamp: datetime.datetime,
+		session: 'async_sessionmaker[AsyncSession]',
+	) -> None:
+		logger.info(dict(
+			msg='before markets',
+		))
+
+		markets = await markets_get_by_symbol(
+			session,
+			set([
+				rate.symbol
+				for rate in rates
+			]),
+		)
+
+		logger.info(dict(
+			msg='after markets',
+		))
+
+		await ticker_store_multiple(
+			session,
+			[
+				Ticker(
+					id=markets[rate.symbol],
+					timestamp=timestamp,
+					value=rate.value,
+				)
+				for rate in rates
+			]
+		)
+
+		logger.info(dict(
+			rates=rates,
+			timestamp=timestamp.isoformat()
+		))
+
+	await Emcont.worker(
+		only_symbols={'EURUSD', 'USDJPY', 'GBPUSD', 'AUDUSD', 'USDCAD'},
+		session=async_session,
+		store_cb=store_cb,
+		request_timeout=2,
+		store_timeout=0.5,
+	)
+
+if __name__ == '__main__':
+	logging.basicConfig(level=logging.INFO)
+	asyncio.run(run())

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/async_api/db.py

@@ -0,0 +1,15 @@
+from ..tickers.settings import Settings as ModelsSettings
+
+import sqlalchemy.ext.asyncio
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.ext.asyncio import async_sessionmaker
+
+def create_engine() -> 'async_sessionmaker[AsyncSession]':
+	engine = sqlalchemy.ext.asyncio.create_async_engine(
+		ModelsSettings.singleton().db_url
+	)
+	async_session = sqlalchemy.ext.asyncio.async_sessionmaker(
+		engine
+	)
+
+	return async_session

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/async_api/fastapi.py

@@ -0,0 +1,71 @@
+import fastapi
+import pydantic
+import functools
+import logging
+import copy
+import uvicorn
+import uvicorn.config
+import sys
+
+from .settings import Settings as APISettings
+from .db import create_engine
+from .websocket_api import WebsocketAPI
+
+from typing import (Any, Optional, Literal, Annotated,)
+
+logger = logging.getLogger(__name__)
+
+
+async def websocket_tickers(
+	websocket: fastapi.WebSocket,
+	websocket_api: WebsocketAPI,
+) -> None:
+	try:
+		await websocket_api.connect(websocket)
+
+		while True:
+			msg = await websocket.receive_text()
+			await websocket_api.on_message(websocket, msg)
+	except fastapi.WebSocketDisconnect:
+		pass
+		# websocket_api.disconnect(websocket)
+	except:
+		logger.exception('')
+		raise
+	finally:
+		await websocket_api.disconnect(websocket)
+
+def create_app() -> fastapi.FastAPI:
+	async_session = create_engine()
+
+	websocket_api = WebsocketAPI(
+		session=async_session,
+	)
+
+	app = fastapi.FastAPI()
+
+	app.websocket(
+		'/tickers/',
+	)(
+		functools.partial(
+			websocket_tickers,
+			websocket_api=fastapi.Depends(lambda : websocket_api),
+		)
+	)
+
+	return app
+
+def run(args: list[str]):
+	log_config = copy.deepcopy(uvicorn.config.LOGGING_CONFIG)
+
+	uvicorn.run(
+		create_app(),
+		host=APISettings.singleton().uvicorn_host,
+		port=APISettings.singleton().uvicorn_port,
+		loop='uvloop',
+		log_config=log_config,
+		log_level=logging.INFO,
+	)
+
+if __name__ == '__main__':
+	run(sys.argv[1:])

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/async_api/schema.py

@@ -0,0 +1,67 @@
+import pydantic
+import decimal
+
+from typing import (Literal, Annotated,)
+
+class SubscribeAction(pydantic.BaseModel):
+	action: Literal['subscribe']
+	class message_t(pydantic.BaseModel):
+		asset_id: Annotated[
+			int,
+			pydantic.Field(alias='assetId')
+		]
+
+	message: message_t
+
+class AssetsAction(pydantic.BaseModel):
+	action: Literal['assets']
+	class message_t(pydantic.BaseModel):
+		pass
+
+	message: Annotated[
+		message_t,
+		pydantic.Field(
+			default_factory=message_t,
+		)
+	]
+
+Action = pydantic.RootModel[
+	AssetsAction | SubscribeAction
+]
+
+class AssetHistoryResponse(pydantic.BaseModel):
+	action: Literal['asset_history'] = 'asset_history'
+
+	class message_t(pydantic.BaseModel):
+		class point_t(pydantic.BaseModel):
+			asset_name : Annotated[
+				str,
+				pydantic.Field(
+					alias='assetName',
+				)
+			]
+			time: int
+			asset_id : Annotated[
+				int,
+				pydantic.Field(alias='assetId')
+			]
+			value: decimal.Decimal
+
+		points: list[point_t]
+	message: message_t
+
+class AssetTickerResponse(pydantic.BaseModel):
+	action: Literal['point'] = 'point'
+
+	message: 'AssetHistoryResponse.message_t.point_t'
+
+class AssetsResponse(pydantic.BaseModel):
+	action: Literal['assets'] = 'assets'
+
+	class message_t(pydantic.BaseModel):
+		class asset_t(pydantic.BaseModel):
+			id: int
+			name: str
+
+		assets: list[asset_t]
+	message: message_t

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/async_api/settings.py

@@ -0,0 +1,18 @@
+import pydantic
+import pydantic_settings
+
+from typing import (ClassVar, Optional,)
+
+
+class Settings(pydantic_settings.BaseSettings):
+	uvicorn_port : int = 80
+	uvicorn_host : str = '127.0.0.1'
+
+	_singleton : ClassVar[Optional['Settings']] = None
+
+	@classmethod
+	def singleton(cls) -> 'Settings':
+		if cls._singleton is None:
+			cls._singleton = Settings.model_validate({})
+
+		return cls._singleton

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/async_api/websocket_api.py

@@ -0,0 +1,126 @@
+import fastapi
+import datetime
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.ext.asyncio import async_sessionmaker
+from . import schema
+from ..tickers.logic import tickers_get_by_period, markets_all
+
+from typing import (Optional, Literal)
+
+class WebsocketAPI:
+	def __init__(
+		self,
+		session: 'async_sessionmaker[AsyncSession]',
+	) -> None:
+		self.connections : set[
+			fastapi.WebSocket,
+		] = set()
+		self.subscriptions_by_asset_id : dict[
+			int, set[fastapi.WebSocket]
+		] = dict()
+		self.subscriptions_by_client : dict[
+			fastapi.WebSocket,
+			int,
+		] = dict()
+		self.session = session
+
+	async def connect(self, client: fastapi.WebSocket) -> None:
+		assert not client in self.connections
+
+		await client.accept()
+
+		self.connections.add(client)
+
+
+	async def subscribe(
+		self,
+		client: fastapi.WebSocket,
+		asset_id: int
+	) -> None:
+		if client in self.subscriptions_by_client:
+			last_asset_id = self.subscriptions_by_client[client]
+			del self.subscriptions_by_asset_id[last_asset_id]
+			del self.subscriptions_by_client[client]
+
+		if not asset_id in self.subscriptions_by_asset_id:
+			self.subscriptions_by_asset_id[asset_id] = set()
+
+		self.subscriptions_by_asset_id[asset_id].add(client)
+		self.subscriptions_by_client[client] = asset_id
+
+		await self.asset_last_period(client, asset_id)
+
+	async def asset_last_period(
+		self,
+		client: fastapi.WebSocket,
+		asset_id: int,
+	) -> None:
+		tickers = await tickers_get_by_period(
+			self.session,
+			period=datetime.timedelta(minutes=30),
+			market_id=asset_id,
+		)
+
+		await client.send_text(
+			schema.AssetHistoryResponse(
+				message=schema.AssetHistoryResponse.message_t(
+					points=[
+						schema.AssetHistoryResponse.message_t.point_t.model_construct(
+							asset_name=o.market.name,
+							asset_id=o.market.id,
+							time=int(o.timestamp.timestamp()),
+							value=o.value,
+						)
+						for o in tickers
+					]
+				)
+			).json(by_alias=True,),
+		)
+
+	async def assets_index(
+		self,
+		client: fastapi.WebSocket,
+	)	-> None:
+		markets = await markets_all(
+			self.session,
+		)
+
+		await client.send_text(
+			schema.AssetsResponse(
+				message=schema.AssetsResponse.message_t(
+					assets=[
+						schema.AssetsResponse.message_t.asset_t.model_construct(
+							name=o.name,
+							id=o.id,
+						)
+						for o in markets
+					]
+				)
+			).json(by_alias=True,),
+		)
+
+	async def on_message(
+		self,
+		client: fastapi.WebSocket,
+		msg_raw: str
+	) -> None:
+		msg = schema.Action.model_validate_json(
+			msg_raw
+		).root
+
+		if isinstance(msg, schema.SubscribeAction):
+			await self.subscribe(
+				client,
+				msg.message.asset_id
+			)
+		elif isinstance(msg, schema.AssetsAction):
+			await self.assets_index(
+				client,
+			)
+		else:
+			raise NotImplementedError
+
+	async def disconnect(self, client: fastapi.WebSocket) -> None:
+		assert client in self.connections
+
+		self.connections.remove(client)

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/alembic/env.py

@@ -0,0 +1,117 @@
+import asyncio
+import logging
+
+from logging.config import fileConfig
+
+from sqlalchemy.ext.asyncio import async_engine_from_config
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from sqlalchemy.engine.base import Connection
+
+from alembic import context
+
+from online.fxreader.pr34.test_task_2025_06_30_v1.tickers.settings import Settings
+from online.fxreader.pr34.test_task_2025_06_30_v1.tickers.models import (
+    Base,
+    Market,
+)
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+config.set_main_option(
+    'sqlalchemy.url',
+    Settings.singleton().db_url
+)
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+# if config.config_file_name is not None:
+#     fileConfig(config.config_file_name)
+# else:
+if True:
+    logging.basicConfig(level=logging.DEBUG)
+
+logger = logging.getLogger(__name__)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+# target_metadata = None
+target_metadata = Base.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def do_run_migrations(
+    connection: Connection,
+):
+    context.configure(connection=connection, target_metadata=target_metadata)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+async def run_async_migrations():
+    """In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    logger.info(dict(msg='started'))
+    connectable = async_engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+
+    async with connectable.connect() as connection:
+        await connection.run_sync(do_run_migrations)
+
+    await connectable.dispose()
+
+    logger.info(dict(msg='done'))
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode."""
+
+    asyncio.run(run_async_migrations())
+
+
+if context.is_offline_mode():
+    raise NotImplementedError
+    # run_migrations_offline()
+else:
+    run_migrations_online()

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/alembic/script.py.mako

@@ -0,0 +1,28 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, Sequence[str], None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    ${downgrades if downgrades else "pass"}

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/alembic/versions/335b4c4f052c_add_market_table.py

@@ -0,0 +1,36 @@
+"""add Market table
+
+Revision ID: 335b4c4f052c
+Revises: 
+Create Date: 2025-07-04 11:31:10.983947
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '335b4c4f052c'
+down_revision: Union[str, Sequence[str], None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('tickers_market',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('name', sa.String(length=32), nullable=False),
+    sa.PrimaryKeyConstraint('id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('tickers_market')
+    # ### end Alembic commands ###

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/alembic/versions/729afc7194c9_add_timezone.py

@@ -0,0 +1,38 @@
+"""add timezone
+
+Revision ID: 729afc7194c9
+Revises: eb63f793db3a
+Create Date: 2025-07-11 11:30:06.246152
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision: str = '729afc7194c9'
+down_revision: Union[str, Sequence[str], None] = 'eb63f793db3a'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('tickers_ticker', 'timestamp',
+               existing_type=postgresql.TIMESTAMP(),
+               type_=sa.DateTime(timezone=True),
+               existing_nullable=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.alter_column('tickers_ticker', 'timestamp',
+               existing_type=sa.DateTime(timezone=True),
+               type_=postgresql.TIMESTAMP(),
+               existing_nullable=False)
+    # ### end Alembic commands ###

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/alembic/versions/eb63f793db3a_add_ticker_table.py

@@ -0,0 +1,38 @@
+"""add Ticker table
+
+Revision ID: eb63f793db3a
+Revises: 335b4c4f052c
+Create Date: 2025-07-07 10:32:49.812738
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = 'eb63f793db3a'
+down_revision: Union[str, Sequence[str], None] = '335b4c4f052c'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('tickers_ticker',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('timestamp', sa.DateTime(), nullable=False),
+    sa.Column('value', sa.Numeric(precision=32, scale=6), nullable=False),
+    sa.ForeignKeyConstraint(['id'], ['tickers_market.id'], ondelete='CASCADE'),
+    sa.UniqueConstraint('id', 'timestamp')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('tickers_ticker')
+    # ### end Alembic commands ###

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/logic.py

@@ -0,0 +1,83 @@
+import datetime
+
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.ext.asyncio import async_sessionmaker
+from sqlalchemy.orm import selectinload, make_transient
+from sqlalchemy.future import select
+
+from .models import Ticker, Market
+from .utils import get_or_create
+
+async def markets_get_by_symbol(
+	session: 'async_sessionmaker[AsyncSession]',
+	symbols: set[str],
+) -> dict[str, int]:
+	res : dict[str, int] = dict()
+
+	async with session() as active_session:
+		async with active_session.begin() as transaction:
+			for o in symbols:
+				m = (await get_or_create(
+					active_session,
+					Market,
+					name=o,
+				))[0]
+				res[o] = m.id
+
+	return res
+
+async def ticker_store_multiple(
+	session: 'async_sessionmaker[AsyncSession]',
+	tickers: list[Ticker],
+) -> None:
+	async with session() as active_session:
+		async with active_session.begin() as transaction:
+			active_session.add_all(
+				tickers,
+			)
+
+async def tickers_get_by_period(
+	session: 'async_sessionmaker[AsyncSession]',
+	market_id: int,
+	period: datetime.timedelta,
+) -> list[Ticker]:
+	async with session() as active_session:
+		async with active_session.begin() as transaction:
+			q = select(
+				Ticker
+			).join(Ticker.market).where(
+				Market.id == market_id,
+				Ticker.timestamp >= datetime.datetime.now(
+					tz=datetime.timezone.utc
+				) - period
+			).order_by(Ticker.timestamp.desc()).options(
+				selectinload(Ticker.market)
+			)
+
+			res = await active_session.execute(q)
+
+			rows = [o[0] for o in res]
+
+			for o in rows:
+				active_session.expunge(o)
+				make_transient(o.market)
+
+			return rows
+
+async def markets_all(
+	session: 'async_sessionmaker[AsyncSession]',
+) -> list[Market]:
+	async with session() as active_session:
+		async with active_session.begin() as transaction:
+			q = select(
+				Market
+			)
+
+			res = await active_session.execute(q)
+
+			rows = [o[0] for o in res]
+
+			for o in rows:
+				active_session.expunge(o)
+
+			return rows

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/models.py

@@ -0,0 +1,63 @@
+import datetime
+import decimal
+
+from sqlalchemy.orm import (
+	mapped_column,
+	Mapped,
+	DeclarativeBase,
+	relationship,
+)
+from sqlalchemy import (
+	String,
+	ForeignKey,
+	Numeric,
+	DateTime,
+	UniqueConstraint,
+)
+
+from typing import (Optional,)
+
+class Base(DeclarativeBase):
+	pass
+
+class Market(Base):
+	__tablename__ = 'tickers_market'
+
+	id: Mapped[int] = mapped_column(primary_key=True)
+	name: Mapped[str] = mapped_column(String(32))
+
+	tickers: Mapped[list['Ticker']] = relationship(
+		back_populates='market',
+	)
+
+	def __repr__(self) -> str:
+		return f"Market(id={self.id!r}, name={self.name!r})"
+
+class Ticker(Base):
+	__tablename__ = 'tickers_ticker'
+
+	id: Mapped[int] = mapped_column(ForeignKey(
+		'tickers_market.id',
+		ondelete='CASCADE',
+	))
+	market: Mapped['Market'] = relationship(
+		back_populates='tickers'
+	)
+
+	timestamp: Mapped[datetime.datetime] = mapped_column(
+		DateTime(timezone=True,)
+	)
+	value: Mapped[decimal.Decimal] = mapped_column(Numeric(
+		precision=32, scale=6,
+	))
+
+	__table_args__ = (
+		UniqueConstraint('id', 'timestamp'),
+	)
+
+	__mapper_args__ = dict(
+		primary_key=('id', 'timestamp',)
+	)
+
+	def __repr__(self) -> str:
+		return f"Ticker(id={self.id!r}, timestamp={self.timestamp!r}, value={self.value!r})"

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/settings.py

@@ -0,0 +1,17 @@
+import pydantic
+import pydantic_settings
+
+from typing import (ClassVar, Optional,)
+
+
+class Settings(pydantic_settings.BaseSettings):
+	db_url : str
+
+	_singleton : ClassVar[Optional['Settings']] = None
+
+	@classmethod
+	def singleton(cls) -> 'Settings':
+		if cls._singleton is None:
+			cls._singleton = Settings.model_validate({})
+
+		return cls._singleton

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers/utils.py

@@ -0,0 +1,50 @@
+from typing import (TypeVar, Optional, Any, cast,)
+from sqlalchemy.ext.asyncio import AsyncSessionTransaction, AsyncSession
+from sqlalchemy.future import select
+from sqlalchemy.orm import DeclarativeBase
+from sqlalchemy.exc import NoResultFound, IntegrityError
+
+M = TypeVar('M', bound='DeclarativeBase')
+
+async def get_or_create(
+	session: AsyncSession,
+	model: type[M],
+	create_method: Optional[str] = None,
+	create_method_kwargs: Optional[dict[str, Any]] = None,
+	**kwargs: Any
+) -> tuple[M, bool]:
+	async def select_row() -> M:
+		res = await session.execute(
+			select(model).where(
+				*[
+					getattr(model, k) == v
+					for k, v in kwargs.items()
+				]
+			)
+		)
+
+		row = res.one()[0]
+
+		assert isinstance(row, model)
+
+		return row
+
+	try:
+		res = await select_row()
+		return res, False
+	except NoResultFound:
+		if create_method_kwargs:
+			kwargs.update(create_method_kwargs)
+
+		if not create_method:
+			created = model(**kwargs)
+		else:
+			created = getattr(model, create_method)(**kwargs)
+
+		try:
+			session.add(created)
+			await session.flush()
+			return created, True
+		except IntegrityError:
+			await session.rollback()
+			return await select_row(), False

deps/test-task-2025-06-30-v1/python/online/fxreader/pr34/test_task_2025_06_30_v1/tickers_retrieval/emcont.py

@@ -0,0 +1,165 @@
+import aiohttp
+import asyncio
+import decimal
+import logging
+import datetime
+# import datetime.timezone
+import pydantic
+import json
+
+from sqlalchemy.ext.asyncio import AsyncSession
+from sqlalchemy.ext.asyncio import async_sessionmaker
+
+from typing import (
+	Any, Annotated, Optional, Awaitable, Callable,
+	Protocol,
+)
+
+logger = logging.getLogger(__name__)
+
+class Emcont:
+	class rates_get_t:
+		class data_t(pydantic.BaseModel):
+			class rate_t(pydantic.BaseModel):
+				symbol: Annotated[
+					str,
+					pydantic.Field(
+						alias='Symbol',
+					)
+				]
+				bid: Annotated[
+					decimal.Decimal,
+					pydantic.Field(
+						alias='Bid',
+					)
+				]
+				ask: Annotated[
+					decimal.Decimal,
+					pydantic.Field(
+						alias='Ask',
+					)
+				]
+
+				@pydantic.computed_field
+				def value(self) -> decimal.Decimal:
+					return (self.ask + self.bid) / 2
+
+				product_type: Annotated[
+					str,
+					pydantic.Field(
+						alias='ProductType',
+					)
+				]
+
+			rates: Annotated[
+				list[rate_t],
+				pydantic.Field(
+					alias='Rates',
+				)
+			]
+
+	@classmethod
+	async def rates_get(
+		cls,
+		only_symbols: Optional[set[str]] = None,
+	) -> Any:
+		async with aiohttp.ClientSession() as session:
+			async with session.get('https://rates.emcont.com') as response:
+				data_json = await response.text()
+				data = cls.rates_get_t.data_t.model_validate_json(
+					data_json[5:-3],
+				)
+
+				if only_symbols:
+					data.rates = [
+						o
+						for o in data.rates
+						if o.symbol in only_symbols
+					]
+
+				return data
+
+	class store_cb_t(Protocol):
+		async def __call__(
+			self,
+			rates: list['Emcont.rates_get_t.data_t.rate_t'],
+			timestamp: datetime.datetime,
+			session: 'async_sessionmaker[AsyncSession]',
+		) -> None: ...
+
+	@classmethod
+	async def worker(
+		cls,
+		session: 'async_sessionmaker[AsyncSession]',
+		store_cb: 'Emcont.store_cb_t',
+		only_symbols: Optional[set[str]] = None,
+		request_timeout: float | int = 0.5,
+		store_timeout: float | int = 0.5,
+		request_period: float | int = 1,
+	) -> None:
+		last_retrieval = datetime.datetime.now(
+			tz=datetime.timezone.utc,
+		)
+
+		assert request_timeout >= 0
+		assert store_timeout >= 0
+
+		request_period_timedelta = datetime.timedelta(
+			seconds=request_period,
+		)
+
+		while True:
+			logger.info(dict(msg='started'))
+
+			entries : Optional['Emcont.rates_get_t.data_t'] = None
+
+			try:
+				try:
+					async with asyncio.timeout(request_timeout):
+						entries = await cls.rates_get(
+							only_symbols=only_symbols,
+						)
+				except TimeoutError:
+					logger.exception('request timeout')
+
+				try:
+					async with asyncio.timeout(store_timeout):
+						if entries:
+							await store_cb(
+								rates=entries.rates,
+								timestamp=last_retrieval,
+								session=session,
+							)
+				except TimeoutError:
+					logger.exception('store timeout')
+			except:
+				logger.exception('')
+
+			next_retrieval = last_retrieval
+
+			def wait_interval():
+				nonlocal next_retrieval
+
+				return (
+					next_retrieval - datetime.datetime.now(
+						tz=datetime.timezone.utc,
+					)
+				).total_seconds()
+
+			while True:
+				next_retrieval += request_period_timedelta
+
+				if (
+					wait_interval() > 0 or
+					wait_interval() > -request_period_timedelta.total_seconds() / 4
+				):
+					break
+				else:
+					logger.warning(dict(
+						msg='skip period due to huge lag',
+					))
+
+			if wait_interval() > 0:
+				await asyncio.sleep(wait_interval())
+
+			last_retrieval = next_retrieval

deps/test-task-2025-06-30-v1/requirements.in

@@ -0,0 +1,27 @@
+alembic
+fastapi
+uvicorn
+websockets
+uvloop
+tomlq
+mypy
+marisa-trie
+pydantic
+asyncpg
+pydantic-settings
+tomlkit
+tomlq
+numpy
+cryptography
+mypy
+pyright
+ruff
+ipython
+ipdb
+requests
+types-requests
+aiohttp
+build
+wheel
+setuptools
+setuptools-scm