def create_app():
"""Flask application factory to create instances
of the Userservice Flask App
"""
app = Flask(__name__)
# Set up tracing and export spans to Cloud Trace
trace.set_tracer_provider(TracerProvider())
cloud_trace_exporter = CloudTraceSpanExporter()
trace.get_tracer_provider().add_span_processor(
SimpleExportSpanProcessor(cloud_trace_exporter))
set_global_httptextformat(CloudTraceFormatPropagator())
# Add Flask auto-instrumentation for tracing
FlaskInstrumentor().instrument_app(app)
# Disabling unused-variable for lines with route decorated functions
# as pylint thinks they are unused
# pylint: disable=unused-variable
@app.route('/version', methods=['GET'])
def version():
"""
Service version endpoint
"""
return app.config['VERSION'], 200
@app.route('/ready', methods=['GET'])
def readiness():
"""
Readiness probe
"""
return 'ok', 200
@app.route('/users', methods=['POST'])
def create_user():
"""Create a user record.
Fails if that username already exists.
Generates a unique accountid.
request fields:
- username
- password
- password-repeat
- firstname
- lastname
- birthday
- timezone
- address
- state
- zip
- ssn
"""
try:
app.logger.debug('Sanitizing input.')
req = {k: bleach.clean(v) for k, v in request.form.items()}
__validate_new_user(req)
# Check if user already exists
if users_db.get_user(req['username']) is not None:
raise NameError('user {} already exists'.format(
req['username']))
# Create password hash with salt
app.logger.debug("Creating password hash.")
password = req['password']
salt = bcrypt.gensalt()
passhash = bcrypt.hashpw(password.encode('utf-8'), salt)
accountid = users_db.generate_accountid()
# Create user data to be added to the database
user_data = {
'accountid': accountid,
'username': req['username'],
'passhash': passhash,
'firstname': req['firstname'],
'lastname': req['lastname'],
'birthday': req['birthday'],
'timezone': req['timezone'],
'address': req['address'],
'state': req['state'],
'zip': req['zip'],
'ssn': req['ssn'],
}
# Add user_data to database
app.logger.debug("Adding user to the database")
users_db.add_user(user_data)
app.logger.info("Successfully created user.")
except UserWarning as warn:
app.logger.error("Error creating new user: %s", str(warn))
return str(warn), 400
except NameError as err:
app.logger.error("Error creating new user: %s", str(err))
return str(err), 409
except SQLAlchemyError as err:
app.logger.error("Error creating new user: %s", str(err))
return 'failed to create user', 500
return jsonify({}), 201
def __validate_new_user(req):
app.logger.debug('validating create user request: %s', str(req))
# Check if required fields are filled
fields = (
'username',
'password',
'password-repeat',
'firstname',
'lastname',
'birthday',
'timezone',
'address',
'state',
'zip',
'ssn',
)
if any(f not in req for f in fields):
raise UserWarning('missing required field(s)')
if any(not bool(req[f] or req[f].strip()) for f in fields):
raise UserWarning('missing value for input field(s)')
# Check if passwords match
if not req['password'] == req['password-repeat']:
raise UserWarning('passwords do not match')
@app.route('/login', methods=['GET'])
def login():
"""Login a user and return a JWT token
Fails if username doesn't exist or password doesn't match hash
token expiry time determined by environment variable
request fields:
- username
- password
"""
app.logger.debug('Sanitizing login input.')
username = bleach.clean(request.args.get('username'))
password = bleach.clean(request.args.get('password'))
# Get user data
try:
app.logger.debug('Getting the user data.')
user = users_db.get_user(username)
if user is None:
raise LookupError('user {} does not exist'.format(username))
# Validate the password
app.logger.debug('Validating the password.')
if not bcrypt.checkpw(password.encode('utf-8'), user['passhash']):
raise PermissionError('invalid login')
full_name = '{} {}'.format(user['firstname'], user['lastname'])
exp_time = datetime.utcnow() + timedelta(
seconds=app.config['EXPIRY_SECONDS'])
payload = {
'user': username,
'acct': user['accountid'],
'name': full_name,
'iat': datetime.utcnow(),
'exp': exp_time,
}
app.logger.debug('Creating jwt token.')
token = jwt.encode(payload,
app.config['PRIVATE_KEY'],
algorithm='RS256')
app.logger.info('Login Successful.')
return jsonify({'token': token.decode("utf-8")}), 200
except LookupError as err:
app.logger.error('Error logging in: %s', str(err))
return str(err), 404
except PermissionError as err:
app.logger.error('Error logging in: %s', str(err))
return str(err), 401
except SQLAlchemyError as err:
app.logger.error('Error logging in: %s', str(err))
return 'failed to retrieve user information', 500
@atexit.register
def _shutdown():
"""Executed when web app is terminated."""
app.logger.info("Stopping userservice.")
# Set up logger
app.logger.handlers = logging.getLogger('gunicorn.error').handlers
app.logger.setLevel(logging.getLogger('gunicorn.error').level)
app.logger.info('Starting userservice.')
app.config['VERSION'] = os.environ.get('VERSION')
app.config['EXPIRY_SECONDS'] = int(os.environ.get('TOKEN_EXPIRY_SECONDS'))
app.config['PRIVATE_KEY'] = open(os.environ.get('PRIV_KEY_PATH'),
'r').read()
app.config['PUBLIC_KEY'] = open(os.environ.get('PUB_KEY_PATH'), 'r').read()
# Configure database connection
try:
users_db = UserDb(os.environ.get("ACCOUNTS_DB_URI"), app.logger)
except OperationalError:
app.logger.critical("users_db database connection failed")
sys.exit(1)
return app
ConsoleSpanExporter,
SimpleSpanProcessor,
BatchSpanProcessor,
)
from opentelemetry.instrumentation.flask import FlaskInstrumentor
from opentelemetry.instrumentation.requests import RequestsInstrumentor
from prometheus_client import start_http_server, Counter
service_name = os.environ.get('SERVICE_NAME', 'otel-flask-service')
agent_host = os.environ.get('AGENT_HOST', 'localhost')
agent_port = os.environ.get('AGENT_PORT', '6831')
trace.set_tracer_provider(
TracerProvider(
resource=Resource.create({SERVICE_NAME: service_name})
)
)
jaeger_exporter = JaegerExporter(
agent_host_name = agent_host,
agent_port = int(agent_port),
)
trace.get_tracer_provider().add_span_processor(
BatchSpanProcessor(jaeger_exporter)
)
# Create a metric to track total number of requests made.
REQUEST_TOTAL = Counter('total_requests', 'Total number of HTTP requests')
# Licensed under the MIT License.
"""
An example to show an application using Opentelemetry tracing api and sdk with the OpenTelemetry Collector
and the Azure monitor exporter.
Telemetry is exported to application insights with the AzureMonitorTraceExporter and Zipkin with the
OTLP Span exporter.
"""
import os
from opentelemetry import trace
from opentelemetry.exporter.otlp.proto.grpc.trace_exporter import OTLPSpanExporter
from opentelemetry.sdk.resources import SERVICE_NAME, Resource
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchSpanProcessor
from azure.monitor.opentelemetry.exporter import AzureMonitorTraceExporter
trace.set_tracer_provider(
TracerProvider(
resource=Resource.create({SERVICE_NAME: "my-zipkin-service"})))
tracer = trace.get_tracer(__name__)
exporter = AzureMonitorTraceExporter.from_connection_string(
os.environ["APPLICATIONINSIGHTS_CONNECTION_STRING"])
otlp_exporter = OTLPSpanExporter(endpoint="http://localhost:4317")
span_processor = BatchSpanProcessor(otlp_exporter)
trace.get_tracer_provider().add_span_processor(span_processor)
with tracer.start_as_current_span("test"):
print("Hello world!")
input(...)
def tearDown(self):
if HAS_OPENTELEMETRY_INSTALLED:
trace_api.set_tracer_provider(self.original_tracer_provider)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from opentelemetry import trace
from opentelemetry.sdk.resources import Resource
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import (
ConsoleSpanExporter,
SimpleSpanProcessor,
)
resource = Resource.create({"service.name": "basic_service"})
trace.set_tracer_provider(TracerProvider(resource=resource))
trace.get_tracer_provider().add_span_processor(
SimpleSpanProcessor(ConsoleSpanExporter()))
tracer = trace.get_tracer(__name__)
with tracer.start_as_current_span("foo"):
print("Hello world!")
def tracer():
trace.set_tracer_provider(TracerProvider())
return trace.get_tracer(__name__)
def setUp(self):
"""Create an OpenTelemetry tracer and a shim before every test case."""
trace.set_tracer_provider(TracerProvider())
self.shim = create_tracer(trace.get_tracer_provider())
from opentelemetry.instrumentation.flask import FlaskInstrumentor
from opentelemetry.instrumentation.sqlalchemy import SQLAlchemyInstrumentor
from opentelemetry.instrumentation.requests import RequestsInstrumentor
from opentelemetry.sdk.resources import SERVICE_NAME, Resource
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchSpanProcessor
from azure.monitor.opentelemetry.exporter import AzureMonitorTraceExporter
app = Flask(__name__)
app.config.from_object(Config)
db = SQLAlchemy(app)
# Set global TracerProvider before instrumenting
trace.set_tracer_provider(
TracerProvider(resource=Resource.create({SERVICE_NAME: "flask-sample"})))
# Enable tracing for sqlalchemy library
SQLAlchemyInstrumentor().instrument()
# Enable tracing for Flask library
FlaskInstrumentor().instrument_app(app)
# Enable tracing for requests library
RequestsInstrumentor().instrument()
trace_exporter = AzureMonitorTraceExporter(
connection_string=Config.CONNECTION_STRING)
trace.get_tracer_provider().add_span_processor(
BatchSpanProcessor(trace_exporter))
def create_app():
"""Flask application factory to create instances
of the Connector Service Flask App
"""
app = Flask(__name__)
# Set up tracing and export spans to Cloud Trace
trace.set_tracer_provider(TracerProvider())
cloud_trace_exporter = CloudTraceSpanExporter()
trace.get_tracer_provider().add_span_processor(
SimpleExportSpanProcessor(cloud_trace_exporter))
set_global_httptextformat(CloudTraceFormatPropagator())
# Add Flask auto-instrumentation for tracing
FlaskInstrumentor().instrument_app(app)
# Disabling unused-variable for lines with route decorated functions
# as pylint thinks they are unused
# pylint: disable=unused-variable
@app.route("/version", methods=["GET"])
def version():
"""
Service version endpoint
"""
return app.config["VERSION"], 200
@app.route("/ready", methods=["GET"])
def ready():
"""Readiness probe."""
return "ok", 200
@app.route("/sync", methods=["POST"])
def sync():
"""Sync PostgreSQL metadata with Google Data Catalog
"""
auth_header = request.headers.get("Authorization")
if auth_header:
token = auth_header.split(" ")[-1]
else:
token = ""
try:
auth_payload = jwt.decode(token,
key=app.config["PUBLIC_KEY"],
algorithms="RS256")
if auth_payload is None:
raise PermissionError
logging.info("Starting sync logic.")
datacatalog_cli.PostgreSQL2DatacatalogCli().run(
_get_connector_run_args())
logging.info("Sync execution done.")
return jsonify({}), 200
except (PermissionError, jwt.exceptions.InvalidTokenError) as err:
logging.error("Error executing sync: %s", str(err))
return "authentication denied", 401
except UserWarning as warn:
logging.error("Error executing sync: %s", str(warn))
return str(warn), 400
except Exception as err:
logging.error("Error executing sync: %s", str(err))
return "failed to sync", 500
@atexit.register
def _shutdown():
"""Executed when web app is terminated."""
logging.info("Stopping contacts service.")
def _get_connector_run_args():
return [
'--datacatalog-project-id',
os.environ.get('DATACATALOG_PROJECT_ID'),
'--datacatalog-location-id',
os.environ.get('DATACATALOG_LOCATION_ID'), '--postgresql-host',
os.environ.get('POSTGRESQL_SERVER'), '--postgresql-user',
os.environ.get('POSTGRES_USER'), '--postgresql-pas',
os.environ.get('POSTGRES_PASSWORD'), '--postgresql-database',
os.environ.get('POSTGRES_DB')
]
logging_client = gcp_logging.Client()
logging_client.setup_logging(log_level=logging.INFO)
root_logger = logging.getLogger()
# use the GCP handler ONLY in order to prevent logs from getting written to STDERR
root_logger.handlers = [
handler for handler in root_logger.handlers
if isinstance(handler, (CloudLoggingHandler, ContainerEngineHandler,
AppEngineHandler))
]
logging.info("Service PostgreSQL connector created.")
# setup global variables
app.config["VERSION"] = os.environ.get("VERSION")
app.config["PUBLIC_KEY"] = open(os.environ.get("PUB_KEY_PATH"), "r").read()
return app
from opentelemetry import trace
from opentelemetry.exporter.jaeger.thrift import JaegerExporter
from opentelemetry.sdk.resources import Resource
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchSpanProcessor
trace.set_tracer_provider(
TracerProvider(resource=Resource.create(
{"service.name": "example_exporter"}), ), )
# Configurando o agente do jeager
# From https://opentelemetry-python.readthedocs.io/en/latest/exporter/jaeger/jaeger.html
jaeger_exporter = JaegerExporter(
agent_host_name='jaeger',
agent_port=6831,
)
# Criando um span e vinculando a um BatchSpanProcessor para envio ao Jeager
# https://opentelemetry-python.readthedocs.io/en/stable/sdk/trace.export.html?highlight=BatchSpanProcessor#opentelemetry.sdk.trace.export.BatchSpanProcessor
span_processor = BatchSpanProcessor(jaeger_exporter)
# Neste exemplo adicionamos o dados de telemetria ao tracer a partir do batch declarado acima:
trace.get_tracer_provider().add_span_processor(span_processor)
tracer = trace.get_tracer(__name__)
with tracer.start_as_current_span("teste_com_span"):
print("SRE and DevOps work together!!!")
class Model(BaseModel): # hacking for type annotation
...
else:
Model = db.Model
tracer = trace.get_tracer(__name__)
# pytest no need to check
if not setting.ENV == "TEST":
use_console_exporter = True
if use_console_exporter:
span_processor = BatchSpanProcessor(ConsoleSpanExporter())
else:
jaeger_exporter = JaegerExporter(
agent_host_name="jaeger",
agent_port=6831,
)
span_processor = BatchSpanProcessor(jaeger_exporter)
trace.set_tracer_provider(
TracerProvider(resource=Resource.create({SERVICE_NAME: "tifa"})))
provider = trace.get_tracer_provider()
provider.add_span_processor(span_processor)
celery = Celery()
celery.conf.broker_url = setting.REDIS_CELERY_URL
celery.conf.timezone = "Asia/Shanghai"
def tearDownClass(cls):
trace_api.set_tracer_provider(cls.original_provider)
def setUpClass(cls):
cls.original_provider = trace_api.get_tracer_provider()
result = cls.create_tracer_provider()
cls.tracer_provider, cls.memory_exporter = result
trace_api.set_tracer_provider(cls.tracer_provider)
from flask import Flask
from opentelemetry import trace
from opentelemetry.exporter.otlp.proto.grpc.trace_exporter import OTLPSpanExporter
from opentelemetry.sdk.resources import Resource
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchSpanProcessor
trace.set_tracer_provider(
TracerProvider(
resource=Resource.create({"service.name": "python-flask-app"})))
trace.get_tracer_provider().add_span_processor(
BatchSpanProcessor(
OTLPSpanExporter(endpoint="https://otlp.nr-data.net:4317")))
tracer = trace.get_tracer(__name__)
with tracer.start_as_current_span("foo"):
with tracer.start_as_current_span("bar"):
with tracer.start_as_current_span("baz"):
print("Hello world from OpenTelemetry Python!")
app = Flask(__name__)
@app.route("/")
def index():
return "Congratulations, it's a web app!"
if __name__ == "__main__":
app.run(host="127.0.0.1", port=8080, debug=True)
BatchExportSpanProcessor,
)
from opentelemetry.resource import AwsLambdaResourceDetector
from opentelemetry.instrumentation.aws_lambda import AwsLambdaInstrumentor
from pkg_resources import iter_entry_points
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger(__name__)
# TODO: get_aggregated_resources
resource = Resource.create().merge(AwsLambdaResourceDetector().detect())
trace.set_tracer_provider(
TracerProvider(
ids_generator=AWSXRayIdsGenerator(),
resource=resource,
)
)
console_exporter = os.environ.get("CONSOLE_EXPORTER", None)
if not console_exporter is None:
from opentelemetry.sdk.trace.export import ConsoleSpanExporter
trace.get_tracer_provider().add_span_processor(
SimpleExportSpanProcessor(ConsoleSpanExporter())
)
logger.info("Console exporter initialized.")
ci = os.environ.get("CI", None)
if ci is None:
from opentelemetry.exporter.otlp.trace_exporter import OTLPSpanExporter
def create_app():
"""Flask application factory to create instances
of the Contact Service Flask App
"""
app = Flask(__name__)
# Disabling unused-variable for lines with route decorated functions
# as pylint thinks they are unused
# pylint: disable=unused-variable
@app.route("/version", methods=["GET"])
def version():
"""
Service version endpoint
"""
return app.config["VERSION"], 200
@app.route("/ready", methods=["GET"])
def ready():
"""Readiness probe."""
return "ok", 200
@app.route("/contacts/<username>", methods=["GET"])
def get_contacts(username):
"""Retrieve the contacts list for the authenticated user.
This list is used for populating Payment and Deposit fields.
Return: a list of contacts
"""
auth_header = request.headers.get("Authorization")
if auth_header:
token = auth_header.split(" ")[-1]
else:
token = ""
try:
auth_payload = jwt.decode(token,
key=app.config["PUBLIC_KEY"],
algorithms="RS256")
if username != auth_payload["user"]:
raise PermissionError
contacts_list = contacts_db.get_contacts(username)
app.logger.debug("Succesfully retrieved contacts.")
return jsonify(contacts_list), 200
except (PermissionError, jwt.exceptions.InvalidTokenError) as err:
app.logger.error("Error retrieving contacts list: %s", str(err))
return "authentication denied", 401
except SQLAlchemyError as err:
app.logger.error("Error retrieving contacts list: %s", str(err))
return "failed to retrieve contacts list", 500
@app.route("/contacts/<username>", methods=["POST"])
def add_contact(username):
"""Add a new favorite account to user's contacts list
Fails if account or routing number are invalid
or if label is not alphanumeric
request fields:
- account_num
- routing_num
- label
- is_external
"""
auth_header = request.headers.get("Authorization")
if auth_header:
token = auth_header.split(" ")[-1]
else:
token = ""
try:
auth_payload = jwt.decode(token,
key=app.config["PUBLIC_KEY"],
algorithms="RS256")
if username != auth_payload["user"]:
raise PermissionError
req = {
k: (bleach.clean(v) if isinstance(v, str) else v)
for k, v in request.get_json().items()
}
_validate_new_contact(req)
_check_contact_allowed(username, auth_payload["acct"], req)
# Create contact data to be added to the database.
contact_data = {
"username": username,
"label": req["label"],
"account_num": req["account_num"],
"routing_num": req["routing_num"],
"is_external": req["is_external"],
}
# Add contact_data to database
app.logger.debug("Adding new contact to the database.")
contacts_db.add_contact(contact_data)
app.logger.info("Successfully added new contact.")
return jsonify({}), 201
except (PermissionError, jwt.exceptions.InvalidTokenError) as err:
app.logger.error("Error adding contact: %s", str(err))
return "authentication denied", 401
except UserWarning as warn:
app.logger.error("Error adding contact: %s", str(warn))
return str(warn), 400
except ValueError as err:
app.logger.error("Error adding contact: %s", str(err))
return str(err), 409
except SQLAlchemyError as err:
app.logger.error("Error adding contact: %s", str(err))
return "failed to add contact", 500
def _validate_new_contact(req):
"""Check that this new contact request has valid fields"""
app.logger.debug("validating add contact request: %s", str(req))
# Check if required fields are filled
fields = ("label", "account_num", "routing_num", "is_external")
if any(f not in req for f in fields):
raise UserWarning("missing required field(s)")
# Validate account number (must be 10 digits)
if req["account_num"] is None or not re.match(r"\A[0-9]{10}\Z",
req["account_num"]):
raise UserWarning("invalid account number")
# Validate routing number (must be 9 digits)
if req["routing_num"] is None or not re.match(r"\A[0-9]{9}\Z",
req["routing_num"]):
raise UserWarning("invalid routing number")
# Only allow external accounts to deposit
if (req["is_external"]
and req["routing_num"] == app.config["LOCAL_ROUTING"]):
raise UserWarning("invalid routing number")
# Validate label
# Must be >0 and <=30 chars, alphanumeric and spaces, can't start with space
if req["label"] is None or not re.match(
r"^[0-9a-zA-Z][0-9a-zA-Z ]{0,29}$", req["label"]):
raise UserWarning("invalid account label")
def _check_contact_allowed(username, accountid, req):
"""Check that this contact is allowed to be created"""
app.logger.debug(
"checking that this contact is allowed to be created: %s",
str(req))
# Don't allow self reference
if (req["account_num"] == accountid
and req["routing_num"] == app.config["LOCAL_ROUTING"]):
raise ValueError("may not add yourself to contacts")
# Don't allow identical contacts
for contact in contacts_db.get_contacts(username):
if (contact["account_num"] == req["account_num"]
and contact["routing_num"] == req["routing_num"]):
raise ValueError("account already exists as a contact")
if contact["label"] == req["label"]:
raise ValueError("contact already exists with that label")
@atexit.register
def _shutdown():
"""Executed when web app is terminated."""
app.logger.info("Stopping contacts service.")
# set up logger
app.logger.handlers = logging.getLogger("gunicorn.error").handlers
app.logger.setLevel(logging.getLogger("gunicorn.error").level)
app.logger.info("Starting contacts service.")
# Set up tracing and export spans to Cloud Trace.
if os.environ['ENABLE_TRACING'] == "true":
app.logger.info("✅ Tracing enabled.")
# Set up tracing and export spans to Cloud Trace
trace.set_tracer_provider(TracerProvider())
cloud_trace_exporter = CloudTraceSpanExporter()
trace.get_tracer_provider().add_span_processor(
BatchExportSpanProcessor(cloud_trace_exporter))
set_global_textmap(CloudTraceFormatPropagator())
FlaskInstrumentor().instrument_app(app)
else:
app.logger.info("🚫 Tracing disabled.")
# setup global variables
app.config["VERSION"] = os.environ.get("VERSION")
app.config["LOCAL_ROUTING"] = os.environ.get("LOCAL_ROUTING_NUM")
app.config["PUBLIC_KEY"] = open(os.environ.get("PUB_KEY_PATH"), "r").read()
# Configure database connection
try:
contacts_db = ContactsDb(os.environ.get("ACCOUNTS_DB_URI"), app.logger)
except OperationalError:
app.logger.critical("database connection failed")
sys.exit(1)
return app
def configure_opentelemetry(
access_token: str = _LS_ACCESS_TOKEN,
span_endpoint: str = _OTEL_EXPORTER_OTLP_SPAN_ENDPOINT,
metric_endpoint: str = _OTEL_EXPORTER_OTLP_METRIC_ENDPOINT,
service_name: str = _LS_SERVICE_NAME,
service_version: str = _LS_SERVICE_VERSION,
propagator: list = _OTEL_PROPAGATORS,
resource_labels: str = _OTEL_RESOURCE_LABELS,
log_level: int = _OTEL_LOG_LEVEL,
span_exporter_endpoint_insecure: bool = _OTEL_EXPORTER_OTLP_SPAN_INSECURE,
metric_exporter_endpoint_insecure: bool = (
_OTEL_EXPORTER_OTLP_METRIC_INSECURE
),
):
"""
Configures OpenTelemetry with Lightstep environment variables
This function works as a configuration layer that allows the Lightstep end
user to use current environment variables seamlessly with OpenTelemetry. In
this way, it is not needed to make any configuration changes to the
environment before using OpenTelemetry. The configuration can be done via
environment variables (prefixed with `LS`) or via arguments passed to this
function. Each argument has a 1:1 correspondence with an environment
variable, their description follows:
Arguments:
access_token (str): LS_ACCESS_TOKEN, the access token used to
authenticate with the Lightstep satellite. This configuration value
is mandatory.
span_endpoint (str): OTEL_EXPORTER_OTLP_SPAN_ENDPOINT, the URL of the Lightstep
satellite where the spans are to be exported. Defaults to
`ingest.lightstep.com:443`.
metric_endpoint (str): OTEL_EXPORTER_OTLP_METRIC_ENDPOINT, the URL of the metrics collector
where the metrics are to be exported. Defaults to
`ingest.lightstep.com:443/metrics`.
service_name (str): LS_SERVICE_NAME, the name of the service that is
used along with the access token to send spans to the Lighstep
satellite. This configuration value is mandatory.
service_version (str): LS_SERVICE_VERSION, the version of the service
used to sernd spans to the Lightstep satellite. Defaults to
`"unknown"`.
propagator (list): OTEL_PROPAGATORS, a list of propagators to be used.
Defaults to `["b3"]`.
resource_labels (dict): OTEL_RESOURCE_LABELS, a dictionary of
key value pairs used to instantiate the resouce of the tracer
provider. Defaults to
`{
"service.name": _LS_SERVICE_NAME,
"service.version": _LS_SERVICE_VERSION,
"telemetry.sdk.language": "python",
"telemetry.sdk.version": "0.9b0",
}`
log_level (int): OTEL_LOG_LEVEL, a boolean value that indicates the log
level. Defaults to `logging.DEBUG`.
information is to be printed. Defaults to `False`.
span_exporter_endpoint_insecure (bool):
OTEL_EXPORTER_OTLP_SPAN_INSECURE, a boolean value that indicates if
an insecure channel is to be used to send spans to the satellite.
Defaults to `False`.
metric_exporter_endpoint_insecure (bool):
OTEL_EXPORTER_OTLP_METRIC_INSECURE, a boolean value that indicates
if an insecure channel is to be used to send spans to the
satellite. Defaults to `False`.
"""
basicConfig(level=log_level)
_logger.debug("configuration")
for key, value in {
"access_token": access_token,
"span_endpoint": span_endpoint,
"metric_endpoint": metric_endpoint,
"service_name": service_name,
"service_version": service_version,
"propagator": propagator,
"resource_labels": resource_labels,
"log_level": log_level,
"span_exporter_endpoint_insecure": span_exporter_endpoint_insecure,
"metric_exporter_endpoint_insecure": metric_exporter_endpoint_insecure,
}.items():
_logger.debug("%s: %s", key, value)
if not _validate_service_name(service_name):
message = (
"Invalid configuration: service name missing. "
"Set environment variable LS_SERVICE_NAME or call "
"configure_opentelemetry with service_name defined"
)
_logger.error(message)
raise InvalidConfigurationError(message)
if access_token is None:
if span_endpoint == _DEFAULT_OTEL_EXPORTER_OTLP_SPAN_ENDPOINT:
message = (
"Invalid configuration: token missing. "
"Must be set to send data to {}. "
"Set environment variable LS_ACCESS_TOKEN or call"
"configure_opentelemetry with access_token defined"
).format(_OTEL_EXPORTER_OTLP_SPAN_ENDPOINT)
_logger.error(message)
raise InvalidConfigurationError(message)
if not _validate_token(access_token):
message = (
"Invalid configuration: invalid token. "
"Token must be a 32, 84 or 104 character long string."
)
_logger.error(message)
raise InvalidConfigurationError(message)
_logger.debug("configuring propagation")
# FIXME use entry points (instead of a dictionary) to locate propagator
# classes
set_global_httptextformat(
CompositeHTTPPropagator(
[{"b3": B3Format}[propagator] for propagator in _OTEL_PROPAGATORS]
)
)
_logger.debug("configuring tracing")
metadata = None
if _env.str("OPENTELEMETRY_PYTHON_TRACER_PROVIDER", None) is None:
# FIXME now that new values can be set in the global configuration
# object, check for this object having a tracer_provider attribute, if
# not, set it to "sdk_tracer_provider" instead of using
# set_tracer_provider, this in order to avoid having more than one
# method of setting configuration.
set_tracer_provider(TracerProvider())
if access_token != "":
metadata = (("lightstep-access-token", access_token),)
credentials = ssl_channel_credentials()
if span_exporter_endpoint_insecure:
credentials = None
# FIXME Do the same for metrics when the OTLPMetricsExporter is in
# OpenTelemetry.
get_tracer_provider().add_span_processor(
BatchExportSpanProcessor(
LightstepOTLPSpanExporter(
endpoint=span_endpoint,
credentials=credentials,
metadata=metadata,
)
)
)
get_tracer_provider().resource = Resource(resource_labels)
if log_level == DEBUG:
get_tracer_provider().add_span_processor(
BatchExportSpanProcessor(ConsoleSpanExporter())
)
def create_app():
"""Flask application factory to create instances
of the Frontend Flask App
"""
app = Flask(__name__)
# Disabling unused-variable for lines with route decorated functions
# as pylint thinks they are unused
# pylint: disable=unused-variable
@app.route('/version', methods=['GET'])
def version():
"""
Service version endpoint
"""
return os.environ.get('VERSION'), 200
@app.route('/ready', methods=['GET'])
def readiness():
"""
Readiness probe
"""
return 'ok', 200
@app.route('/whereami', methods=['GET'])
def whereami():
"""
Returns the cluster name + zone name where this Pod is running.
"""
return "Cluster: " + cluster_name + ", Pod: " + pod_name + ", Zone: " + pod_zone, 200
@app.route("/")
def root():
"""
Renders home page or login page, depending on authentication status.
"""
token = request.cookies.get(app.config['TOKEN_NAME'])
if not verify_token(token):
return login_page()
return home()
@app.route("/home")
def home():
"""
Renders home page. Redirects to /login if token is not valid
"""
token = request.cookies.get(app.config['TOKEN_NAME'])
if not verify_token(token):
# user isn't authenticated
app.logger.debug(
'User isn\'t authenticated. Redirecting to login page.')
return redirect(
url_for('login_page',
_external=True,
_scheme=app.config['SCHEME']))
token_data = jwt.decode(token, verify=False)
display_name = token_data['name']
username = token_data['user']
account_id = token_data['acct']
hed = {'Authorization': 'Bearer ' + token}
# get balance
balance = None
try:
url = '{}/{}'.format(app.config["BALANCES_URI"], account_id)
app.logger.debug('Getting account balance.')
response = requests.get(url=url,
headers=hed,
timeout=app.config['BACKEND_TIMEOUT'])
if response:
balance = response.json()
except (requests.exceptions.RequestException, ValueError) as err:
app.logger.error('Error getting account balance: %s', str(err))
# get history
transaction_list = None
try:
url = '{}/{}'.format(app.config["HISTORY_URI"], account_id)
app.logger.debug('Getting transaction history.')
response = requests.get(url=url,
headers=hed,
timeout=app.config['BACKEND_TIMEOUT'])
if response:
transaction_list = response.json()
except (requests.exceptions.RequestException, ValueError) as err:
app.logger.error('Error getting transaction history: %s', str(err))
# get contacts
contacts = []
try:
url = '{}/{}'.format(app.config["CONTACTS_URI"], username)
app.logger.debug('Getting contacts.')
response = requests.get(url=url,
headers=hed,
timeout=app.config['BACKEND_TIMEOUT'])
if response:
contacts = response.json()
except (requests.exceptions.RequestException, ValueError) as err:
app.logger.error('Error getting contacts: %s', str(err))
_populate_contact_labels(account_id, transaction_list, contacts)
return render_template('index.html',
cluster_name=cluster_name,
pod_name=pod_name,
pod_zone=pod_zone,
cymbal_logo=os.getenv('CYMBAL_LOGO', 'false'),
history=transaction_list,
balance=balance,
name=display_name,
account_id=account_id,
contacts=contacts,
message=request.args.get('msg', None),
bank_name=os.getenv('BANK_NAME',
'Bank of Anthos'))
def _populate_contact_labels(account_id, transactions, contacts):
"""
Populate contact labels for the passed transactions.
Side effect:
Take each transaction and set the 'accountLabel' field with the label of
the contact each transaction was associated with. If there was no
associated contact, set 'accountLabel' to None.
If any parameter is None, nothing happens.
Params: account_id - the account id for the user owning the transaction list
transactions - a list of transactions as key/value dicts
[{transaction1}, {transaction2}, ...]
contacts - a list of contacts as key/value dicts
[{contact1}, {contact2}, ...]
"""
app.logger.debug('Populating contact labels.')
if account_id is None or transactions is None or contacts is None:
return
# Map contact accounts to their labels. If no label found, default to None.
contact_map = {c['account_num']: c.get('label') for c in contacts}
# Populate the 'accountLabel' field. If no match found, default to None.
for trans in transactions:
if trans['toAccountNum'] == account_id:
trans['accountLabel'] = contact_map.get(
trans['fromAccountNum'])
elif trans['fromAccountNum'] == account_id:
trans['accountLabel'] = contact_map.get(trans['toAccountNum'])
@app.route('/payment', methods=['POST'])
def payment():
"""
Submits payment request to ledgerwriter service
Fails if:
- token is not valid
- basic validation checks fail
- response code from ledgerwriter is not 201
"""
token = request.cookies.get(app.config['TOKEN_NAME'])
if not verify_token(token):
# user isn't authenticated
app.logger.error(
'Error submitting payment: user is not authenticated.')
return abort(401)
try:
account_id = jwt.decode(token, verify=False)['acct']
recipient = request.form['account_num']
if recipient == 'add':
recipient = request.form['contact_account_num']
label = request.form.get('contact_label', None)
if label:
# new contact. Add to contacts list
_add_contact(label, recipient, app.config['LOCAL_ROUTING'],
False)
transaction_data = {
"fromAccountNum": account_id,
"fromRoutingNum": app.config['LOCAL_ROUTING'],
"toAccountNum": recipient,
"toRoutingNum": app.config['LOCAL_ROUTING'],
"amount": int(Decimal(request.form['amount']) * 100),
"uuid": request.form['uuid']
}
_submit_transaction(transaction_data)
app.logger.info('Payment initiated successfully.')
return redirect(
url_for('home',
msg='Payment successful',
_external=True,
_scheme=app.config['SCHEME']))
except requests.exceptions.RequestException as err:
app.logger.error('Error submitting payment: %s', str(err))
except UserWarning as warn:
app.logger.error('Error submitting payment: %s', str(warn))
msg = 'Payment failed: {}'.format(str(warn))
return redirect(
url_for('home',
msg=msg,
_external=True,
_scheme=app.config['SCHEME']))
return redirect(
url_for('home',
msg='Payment failed',
_external=True,
_scheme=app.config['SCHEME']))
@app.route('/deposit', methods=['POST'])
def deposit():
"""
Submits deposit request to ledgerwriter service
Fails if:
- token is not valid
- routing number == local routing number
- response code from ledgerwriter is not 201
"""
token = request.cookies.get(app.config['TOKEN_NAME'])
if not verify_token(token):
# user isn't authenticated
app.logger.error(
'Error submitting deposit: user is not authenticated.')
return abort(401)
try:
# get account id from token
account_id = jwt.decode(token, verify=False)['acct']
if request.form['account'] == 'add':
external_account_num = request.form['external_account_num']
external_routing_num = request.form['external_routing_num']
if external_routing_num == app.config['LOCAL_ROUTING']:
raise UserWarning("invalid routing number")
external_label = request.form.get('external_label', None)
if external_label:
# new contact. Add to contacts list
_add_contact(external_label, external_account_num,
external_routing_num, True)
else:
account_details = json.loads(request.form['account'])
external_account_num = account_details['account_num']
external_routing_num = account_details['routing_num']
transaction_data = {
"fromAccountNum": external_account_num,
"fromRoutingNum": external_routing_num,
"toAccountNum": account_id,
"toRoutingNum": app.config['LOCAL_ROUTING'],
"amount": int(Decimal(request.form['amount']) * 100),
"uuid": request.form['uuid']
}
_submit_transaction(transaction_data)
app.logger.info('Deposit submitted successfully.')
return redirect(
url_for('home',
msg='Deposit successful',
_external=True,
_scheme=app.config['SCHEME']))
except requests.exceptions.RequestException as err:
app.logger.error('Error submitting deposit: %s', str(err))
except UserWarning as warn:
app.logger.error('Error submitting deposit: %s', str(warn))
msg = 'Deposit failed: {}'.format(str(warn))
return redirect(
url_for('home',
msg=msg,
_external=True,
_scheme=app.config['SCHEME']))
return redirect(
url_for('home',
msg='Deposit failed',
_external=True,
_scheme=app.config['SCHEME']))
def _submit_transaction(transaction_data):
app.logger.debug('Submitting transaction.')
token = request.cookies.get(app.config['TOKEN_NAME'])
hed = {
'Authorization': 'Bearer ' + token,
'content-type': 'application/json'
}
resp = requests.post(url=app.config["TRANSACTIONS_URI"],
data=jsonify(transaction_data).data,
headers=hed,
timeout=app.config['BACKEND_TIMEOUT'])
try:
resp.raise_for_status() # Raise on HTTP Status code 4XX or 5XX
except requests.exceptions.HTTPError as http_request_err:
raise UserWarning(resp.text) from http_request_err
def _add_contact(label, acct_num, routing_num, is_external_acct=False):
"""
Submits a new contact to the contact service.
Raise: UserWarning if the response status is 4xx or 5xx.
"""
app.logger.debug('Adding new contact.')
token = request.cookies.get(app.config['TOKEN_NAME'])
hed = {
'Authorization': 'Bearer ' + token,
'content-type': 'application/json'
}
contact_data = {
'label': label,
'account_num': acct_num,
'routing_num': routing_num,
'is_external': is_external_acct
}
token_data = jwt.decode(token, verify=False)
url = '{}/{}'.format(app.config["CONTACTS_URI"], token_data['user'])
resp = requests.post(url=url,
data=jsonify(contact_data).data,
headers=hed,
timeout=app.config['BACKEND_TIMEOUT'])
try:
resp.raise_for_status() # Raise on HTTP Status code 4XX or 5XX
except requests.exceptions.HTTPError as http_request_err:
raise UserWarning(resp.text) from http_request_err
@app.route("/login", methods=['GET'])
def login_page():
"""
Renders login page. Redirects to /home if user already has a valid token
"""
token = request.cookies.get(app.config['TOKEN_NAME'])
if verify_token(token):
# already authenticated
app.logger.debug(
'User already authenticated. Redirecting to /home')
return redirect(
url_for('home', _external=True, _scheme=app.config['SCHEME']))
return render_template('login.html',
cymbal_logo=os.getenv('CYMBAL_LOGO', 'false'),
cluster_name=cluster_name,
pod_name=pod_name,
pod_zone=pod_zone,
message=request.args.get('msg', None),
default_user=os.getenv('DEFAULT_USERNAME', ''),
default_password=os.getenv(
'DEFAULT_PASSWORD', ''),
bank_name=os.getenv('BANK_NAME',
'Bank of Anthos'))
@app.route('/login', methods=['POST'])
def login():
"""
Submits login request to userservice and saves resulting token
Fails if userservice does not accept input username and password
"""
return _login_helper(request.form['username'],
request.form['password'])
def _login_helper(username, password):
try:
app.logger.debug('Logging in.')
req = requests.get(url=app.config["LOGIN_URI"],
params={
'username': username,
'password': password
})
req.raise_for_status() # Raise on HTTP Status code 4XX or 5XX
# login success
token = req.json()['token'].encode('utf-8')
claims = jwt.decode(token, verify=False)
max_age = claims['exp'] - claims['iat']
resp = make_response(
redirect(
url_for('home',
_external=True,
_scheme=app.config['SCHEME'])))
resp.set_cookie(app.config['TOKEN_NAME'], token, max_age=max_age)
app.logger.info('Successfully logged in.')
return resp
except (RequestException, HTTPError) as err:
app.logger.error('Error logging in: %s', str(err))
return redirect(
url_for('login',
msg='Login Failed',
_external=True,
_scheme=app.config['SCHEME']))
@app.route("/signup", methods=['GET'])
def signup_page():
"""
Renders signup page. Redirects to /login if token is not valid
"""
token = request.cookies.get(app.config['TOKEN_NAME'])
if verify_token(token):
# already authenticated
app.logger.debug(
'User already authenticated. Redirecting to /home')
return redirect(
url_for('home', _external=True, _scheme=app.config['SCHEME']))
return render_template('signup.html',
cymbal_logo=os.getenv('CYMBAL_LOGO', 'false'),
cluster_name=cluster_name,
pod_name=pod_name,
pod_zone=pod_zone,
bank_name=os.getenv('BANK_NAME',
'Bank of Anthos'))
@app.route("/signup", methods=['POST'])
def signup():
"""
Submits signup request to userservice
Fails if userservice does not accept input form data
"""
try:
# create user
app.logger.debug('Creating new user.')
resp = requests.post(url=app.config["USERSERVICE_URI"],
data=request.form,
timeout=app.config['BACKEND_TIMEOUT'])
if resp.status_code == 201:
# user created. Attempt login
app.logger.info('New user created.')
return _login_helper(request.form['username'],
request.form['password'])
except requests.exceptions.RequestException as err:
app.logger.error('Error creating new user: %s', str(err))
return redirect(
url_for('login',
msg='Error: Account creation failed',
_external=True,
_scheme=app.config['SCHEME']))
@app.route('/logout', methods=['POST'])
def logout():
"""
Logs out user by deleting token cookie and redirecting to login page
"""
app.logger.info('Logging out.')
resp = make_response(
redirect(
url_for('login_page',
_external=True,
_scheme=app.config['SCHEME'])))
resp.delete_cookie(app.config['TOKEN_NAME'])
return resp
def verify_token(token):
"""
Validates token using userservice public key
"""
app.logger.debug('Verifying token.')
if token is None:
return False
try:
jwt.decode(token,
key=app.config['PUBLIC_KEY'],
algorithms='RS256',
verify=True)
app.logger.debug('Token verified.')
return True
except jwt.exceptions.InvalidTokenError as err:
app.logger.error('Error validating token: %s', str(err))
return False
# register html template formatters
def format_timestamp_day(timestamp):
""" Format the input timestamp day in a human readable way """
# TODO: time zones?
date = datetime.datetime.strptime(timestamp,
app.config['TIMESTAMP_FORMAT'])
return date.strftime('%d')
def format_timestamp_month(timestamp):
""" Format the input timestamp month in a human readable way """
# TODO: time zones?
date = datetime.datetime.strptime(timestamp,
app.config['TIMESTAMP_FORMAT'])
return date.strftime('%b')
def format_currency(int_amount):
""" Format the input currency in a human readable way """
if int_amount is None:
return '$---'
amount_str = '${:0,.2f}'.format(abs(Decimal(int_amount) / 100))
if int_amount < 0:
amount_str = '-' + amount_str
return amount_str
# set up global variables
app.config["TRANSACTIONS_URI"] = 'http://{}/transactions'.format(
os.environ.get('TRANSACTIONS_API_ADDR'))
app.config["USERSERVICE_URI"] = 'http://{}/users'.format(
os.environ.get('USERSERVICE_API_ADDR'))
app.config["BALANCES_URI"] = 'http://{}/balances'.format(
os.environ.get('BALANCES_API_ADDR'))
app.config["HISTORY_URI"] = 'http://{}/transactions'.format(
os.environ.get('HISTORY_API_ADDR'))
app.config["LOGIN_URI"] = 'http://{}/login'.format(
os.environ.get('USERSERVICE_API_ADDR'))
app.config["CONTACTS_URI"] = 'http://{}/contacts'.format(
os.environ.get('CONTACTS_API_ADDR'))
app.config['PUBLIC_KEY'] = open(os.environ.get('PUB_KEY_PATH'), 'r').read()
app.config['LOCAL_ROUTING'] = os.getenv('LOCAL_ROUTING_NUM')
app.config[
'BACKEND_TIMEOUT'] = 4 # timeout in seconds for calls to the backend
app.config['TOKEN_NAME'] = 'token'
app.config['TIMESTAMP_FORMAT'] = '%Y-%m-%dT%H:%M:%S.%f%z'
app.config['SCHEME'] = os.environ.get('SCHEME', 'http')
# where am I?
metadata_url = 'http://metadata.google.internal/computeMetadata/v1/'
metadata_headers = {'Metadata-Flavor': 'Google'}
# get GKE cluster name
cluster_name = "unknown"
try:
req = requests.get(metadata_url + 'instance/attributes/cluster-name',
headers=metadata_headers)
if req.ok:
cluster_name = str(req.text)
except (RequestException, HTTPError) as err:
app.logger.warning("Unable to capture GKE cluster name.")
# get GKE pod name
pod_name = "unknown"
pod_name = socket.gethostname()
# get GKE node zone
pod_zone = "unknown"
try:
req = requests.get(metadata_url + 'instance/zone',
headers=metadata_headers)
if req.ok:
pod_zone = str(req.text.split("/")[3])
except (RequestException, HTTPError) as err:
app.logger.warning("Unable to capture GKE node zone.")
# register formater functions
app.jinja_env.globals.update(format_currency=format_currency)
app.jinja_env.globals.update(format_timestamp_month=format_timestamp_month)
app.jinja_env.globals.update(format_timestamp_day=format_timestamp_day)
# Set up logging
app.logger.handlers = logging.getLogger('gunicorn.error').handlers
app.logger.setLevel(logging.getLogger('gunicorn.error').level)
app.logger.info('Starting frontend service.')
# Set up tracing and export spans to Cloud Trace.
if os.environ['ENABLE_TRACING'] == "true":
app.logger.info("✅ Tracing enabled.")
trace.set_tracer_provider(TracerProvider())
cloud_trace_exporter = CloudTraceSpanExporter()
trace.get_tracer_provider().add_span_processor(
BatchExportSpanProcessor(cloud_trace_exporter))
set_global_textmap(CloudTraceFormatPropagator())
# Add tracing auto-instrumentation for Flask, jinja and requests
FlaskInstrumentor().instrument_app(app)
RequestsInstrumentor().instrument()
Jinja2Instrumentor().instrument()
else:
app.logger.info("🚫 Tracing disabled.")
return app
# jaeger_example.py
from opentelemetry import trace
from opentelemetry.exporter.jaeger.thrift import JaegerExporter
from opentelemetry.sdk.resources import SERVICE_NAME, Resource
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchSpanProcessor
trace.set_tracer_provider(
TracerProvider(
resource=Resource.create({SERVICE_NAME: "my-helloworld-service"})))
jaeger_exporter = JaegerExporter(
agent_host_name="localhost",
agent_port=6831,
)
trace.get_tracer_provider().add_span_processor(
BatchSpanProcessor(jaeger_exporter))
tracer = trace.get_tracer(__name__)
with tracer.start_as_current_span("foo"):
with tracer.start_as_current_span("bar"):
with tracer.start_as_current_span("baz"):
print("Hello world from OpenTelemetry Python!")
def enable_tracing() -> None:
from opentelemetry.trace import set_tracer_provider
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.trace.sampling import DEFAULT_OFF
set_tracer_provider(TracerProvider(sampler=DEFAULT_OFF))
rsv_status = requests.post(os.getenv("RSV_SVC"),
json={
"date": request.json["date"],
"name": request.json["name"]
})
if not rsv_status.ok:
return 'bad request for rsv', 400
return jsonify({
"payment": pay_status.json(),
"reservation": rsv_status.json()
})
@app.route("/debug", methods=["POST"])
def make_debug():
return jsonify(request.json)
if __name__ == '__main__':
endpoint = "{}:{}".format(os.getenv("OTC_HOST"),
os.getenv("OTC_PORT", "55680"))
print('OTC Collector endpoint set to {}'.format(endpoint))
trace.set_tracer_provider(
TracerProvider(resource=Resource({"service.name": "booking"})))
trace.get_tracer_provider().add_span_processor(
BatchExportSpanProcessor(
OTLPSpanExporter(endpoint=endpoint, insecure=True)))
app.run(debug=True, host='0.0.0.0')
def setUpClass(cls):
set_tracer_provider(TracerProvider())
from flask import Flask
from opentelemetry import trace
from opentelemetry.sdk.resources import Resource
from opentelemetry.sdk.trace import TracerProvider
from opentelemetry.sdk.trace.export import BatchSpanProcessor, ConsoleSpanExporter
from opentelemetry.instrumentation.flask import FlaskInstrumentor
from opentelemetry.instrumentation.requests import RequestsInstrumentor
from opentelemetry.exporter.jaeger.thrift import JaegerExporter
exporter = ConsoleSpanExporter()
resource = Resource.create({"service.name": "grocery-store"})
provider = TracerProvider(resource=resource)
span_processor = BatchSpanProcessor(exporter)
provider.add_span_processor(span_processor)
provider.add_span_processor(BatchSpanProcessor(JaegerExporter()))
trace.set_tracer_provider(provider)
app = Flask(__name__)
FlaskInstrumentor().instrument_app(app)
RequestsInstrumentor().instrument()
@app.route("/")
def welcome():
with trace.get_tracer(__name__).start_as_current_span("welcome message"):
return "Welcome to the grocery store!"
@app.route("/whats-in-store")
def whats_in_store():
inventory_service = os.environ.get("INVENTORY_SERVICE_URL",
from flask import jsonify, Flask, request
import os
from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider, Resource
from opentelemetry.sdk.trace.export import BatchExportSpanProcessor
from opentelemetry.exporter.otlp.trace_exporter import OTLPSpanExporter
app = Flask("reservations")
@app.route("/reserve", methods=["POST"])
def reserve():
return jsonify({"status": "reserved for {} {}".format(request.json['name'], request.json['date'])})
if __name__ == '__main__':
endpoint = "{}:{}".format(os.getenv("OTC_HOST"), os.getenv("OTC_PORT", "55680"))
print('OTC Collector endpoint set to {}'.format(endpoint))
trace.set_tracer_provider(TracerProvider(resource=Resource({"service.name": "reservations"})))
trace.get_tracer_provider().add_span_processor(BatchExportSpanProcessor(OTLPSpanExporter(endpoint=endpoint,
insecure=True)))
app.run(debug=True, host='0.0.0.0')
SimpleExportSpanProcessor,
)
import flask, os, pkg_resources
import socket
app = Flask(__name__)
OTLP = os.getenv("OTLP") if os.getenv("OTLP") is not None else "localhost"
trace.set_tracer_provider(
TracerProvider(
resource=Resource.create(
{
"service.name": "database",
"service.instance.id": str(id(app)),
"telemetry.sdk.name": "opentelemetry",
"telemetry.sdk.language": "python",
"telemetry.sdk.version": pkg_resources.get_distribution("opentelemetry-sdk").version,
"host.hostname": socket.gethostname(),
}
)
)
)
tracerProvider = trace.get_tracer_provider()
tracer = tracerProvider.get_tracer(__name__)
tracerProvider.add_span_processor(
SimpleExportSpanProcessor(ConsoleSpanExporter())
)
otlp_exporter = OTLPSpanExporter(endpoint="{}:55680".format(OTLP))
tracerProvider.add_span_processor(
SimpleExportSpanProcessor(otlp_exporter)
def setUpClass(cls):
trace.set_tracer_provider(
TracerProvider(
resource=Resource({SERVICE_NAME: TEST_SERVICE_NAME})))
elif 'btn-nclicks-4' in changed_id:
return deliveryStatus() + old_output
elif 'btn-nclicks-5' in changed_id:
return payOrder() + old_output
else:
load_main_screen()
return old_output
trace.set_tracer_provider(
TracerProvider(resource=Resource.create({
"service.name":
"frontend-client",
"host.hostname":
socket.gethostname(),
"telemetry.sdk.name":
"opentelemetry",
"telemetry.sdk.language":
"python",
"telemetry.sdk.version":
pkg_resources.get_distribution("opentelemetry-sdk").version,
})))
tracerProvider = trace.get_tracer_provider()
tracer = tracerProvider.get_tracer(__name__)
tracerProvider.add_span_processor(SimpleSpanProcessor(ConsoleSpanExporter()))
otlp_exporter = OTLPSpanExporter(endpoint="{}:55680".format(OTLP),
insecure=True)
tracerProvider.add_span_processor(SimpleSpanProcessor(otlp_exporter))
RequestsInstrumentor().instrument(tracer_provider=tracerProvider)
def configure_exporter(exporter):
trace.set_tracer_provider(TracerProvider())
trace.get_tracer_provider().add_span_processor(
SimpleExportSpanProcessor(exporter))
propagators.set_global_textmap(CloudTraceFormatPropagator())
from opentelemetry.sdk.trace.export import (
ConsoleSpanExporter,
SimpleExportSpanProcessor,
)
try:
# Relative imports should work in the context of the package, e.g.:
# `python -m opentelemetry_example_app.grpc.hello_world_client`.
from .gen import helloworld_pb2, helloworld_pb2_grpc
except ImportError:
# This will fail when running the file as a script, e.g.:
# `./hello_world_client.py`
# fall back to importing from the same directory in this case.
from gen import helloworld_pb2, helloworld_pb2_grpc
trace.set_tracer_provider(TracerProvider())
trace.get_tracer_provider().add_span_processor(
SimpleExportSpanProcessor(ConsoleSpanExporter()))
def run():
# NOTE(gRPC Python Team): .close() is possible on a channel and should be
# used in circumstances in which the with statement does not fit the needs
# of the code.
with grpc.insecure_channel("localhost:50051") as channel:
channel = intercept_channel(channel, client_interceptor())
stub = helloworld_pb2_grpc.GreeterStub(channel)
# stub.SayHello is a _InterceptorUnaryUnaryMultiCallable
@app.route('/alpha/<username>')
def hello_world(username):
beta_status = requests.post(os.getenv("BETA_SVC"), json={
"name": username,
"date": datetime.datetime.today().strftime('%Y-%m-%d')
})
if not beta_status.ok:
return 'bad request to ' + os.getenv("BETA_SVC"), 400
delta_status = requests.post(os.getenv("DELTA_SVC"), json={
"name": username,
"date": datetime.datetime.today().strftime('%Y-%m-%d')
})
if not delta_status.ok:
return 'bad request to ' + os.getenv("DELTA_SVC"), 400
curr_time = datetime.datetime.today().strftime('%Y-%m-%d : %H:%M:%S')
return jsonify({"time": curr_time, "beta_response": beta_status.json(), "delta_response": delta_status.json()})
if __name__ == '__main__':
endpoint = "{}:{}".format(os.getenv("OTC_HOST"), os.getenv("OTC_PORT", "55680"))
print('OTC Collector endpoint set to {}'.format(endpoint))
trace.set_tracer_provider(TracerProvider(resource=Resource({"service.name": "alpha"})))
trace.get_tracer_provider().add_span_processor(BatchExportSpanProcessor(OTLPSpanExporter(endpoint=endpoint,
insecure=True)))
app.run(debug=True, host='0.0.0.0')
