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import os
from subprocess import run
from .taler_service import TalerService
class Exchange(TalerService):
def __init__(self, config, watcher_getter, request):
super().__init__(config, watcher_getter, request)
# get own URL from config
r = run(["taler-config", "-c", config.conf, "-s", "EXCHANGE", "-o", "BASE_URL"],
check=True, text=True, capture_output=True)
self.url = r.stdout.rstrip()
# get and create directory for terms of service
r = run(["taler-config", "-c", config.conf, "-s", "EXCHANGE", "-o", "TERMS_DIR"],
check=True, text=True, capture_output=True)
self.terms_dir = r.stdout.rstrip().replace("${TALER_DATA_HOME}", config.data_home)
terms_dir_en = os.path.join(self.terms_dir, 'en')
os.makedirs(terms_dir_en)
# get eTag and create ToS file for it
r = run(["taler-config", "-c", config.conf, "-s", "EXCHANGE", "-o", "TERMS_ETAG"],
check=True, text=True, capture_output=True)
self.terms_etag = r.stdout.rstrip()
self.tos = "ToS Foo Bar\n"
with open(os.path.join(terms_dir_en, "%s.txt" % self.terms_etag), 'w') as f:
f.write(self.tos)
def start(self):
run(["taler-exchange-dbinit", "-c", self.config.conf], check=True)
run(["taler-exchange-wire", "-c", self.config.conf], check=True)
run(["taler-exchange-keyup", "-c", self.config.conf,
"-L", "INFO",
"-o", os.path.join(self.config.tmpdir, "e2a.dat")
], check=True, capture_output=True)
log_path = os.path.join(self.config.tmpdir, "exchange.log")
self.watcher_getter(
name='taler-exchange-httpd',
arguments=['-c', self.config.conf, '-l', log_path],
checker=self.test_url,
request=self.request, # Needed for the correct execution order of finalizers
)
# the wirewatch is needed for interaction with the bank
log_wirewatch_path = os.path.join(self.config.tmpdir, "exchange-wirewatch.log")
self.watcher_getter(
name='taler-exchange-wirewatch',
arguments=['-c', self.config.conf, '-l', log_wirewatch_path],
checker=lambda: True, # no need to wait for this to come up
request=self.request, # Needed for the correct execution order of finalizers
)
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