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Feature: Implement merge_headers

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Implement and document `merge_headers`
for all other ESPs that can support it. (See #371
for base and Amazon SES implementation.)

Closes #374
This commit is contained in:
Mike Edmunds
2024-06-20 15:31:58 -07:00
committed by GitHub
parent 6e696b8566
commit 0776b12331
35 changed files with 754 additions and 40 deletions
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40
anymail/backends/brevo.py
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@@ -91,28 +91,32 @@ class BrevoPayload(RequestsPayload):
self.merge_data = {}
self.metadata = {}
self.merge_metadata = {}
self.merge_headers = {}
def serialize_data(self):
"""Performs any necessary serialization on self.data, and returns the result."""
if self.is_batch():
# Burst data["to"] into data["messageVersions"]
to_list = self.data.pop("to", [])
self.data["messageVersions"] = [
{"to": [to], "params": self.merge_data.get(to["email"])}
for to in to_list
]
if self.merge_metadata:
# Merge global metadata with any per-recipient metadata.
# (Top-level X-Mailin-custom header is already set to global metadata,
# and will apply for recipients without a "headers" override.)
for version in self.data["messageVersions"]:
to_email = version["to"][0]["email"]
if to_email in self.merge_metadata:
recipient_metadata = self.metadata.copy()
recipient_metadata.update(self.merge_metadata[to_email])
version["headers"] = {
"X-Mailin-custom": self.serialize_json(recipient_metadata)
}
self.data["messageVersions"] = []
for to in to_list:
to_email = to["email"]
version = {"to": [to]}
headers = CaseInsensitiveDict()
if to_email in self.merge_data:
version["params"] = self.merge_data[to_email]
if to_email in self.merge_metadata:
# Merge global metadata with any per-recipient metadata.
# (Top-level X-Mailin-custom header already has global metadata,
# and will apply for recipients without version headers.)
recipient_metadata = self.metadata.copy()
recipient_metadata.update(self.merge_metadata[to_email])
headers["X-Mailin-custom"] = self.serialize_json(recipient_metadata)
if to_email in self.merge_headers:
headers.update(self.merge_headers[to_email])
if headers:
version["headers"] = headers
self.data["messageVersions"].append(version)
if not self.data["headers"]:
del self.data["headers"] # don't send empty headers
@@ -212,6 +216,10 @@ class BrevoPayload(RequestsPayload):
# Late-bound in serialize_data:
self.merge_metadata = merge_metadata
def set_merge_headers(self, merge_headers):
# Late-bound in serialize_data:
self.merge_headers = merge_headers
def set_send_at(self, send_at):
try:
start_time_iso = send_at.isoformat(timespec="milliseconds")