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[traffic] Implement HttpTraffSource

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Signed-off-by: mvglasow <michael -at- vonglasow.com>
This commit is contained in:
mvglasow
2025-07-20 13:14:23 +03:00
parent a20d1453e0
commit 3f58c6ee20
8 changed files with 549 additions and 8 deletions
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94
traffxml/traff_model_xml.cpp
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@@ -303,6 +303,41 @@ std::optional<IsoTime> OptionalTimeFromXml(pugi::xml_attribute const & attribute
return result;
}
/**
* @brief Retrieves a response status from an attribute.
*
* @param attribute The XML attribute to retrieve.
* @param status Receives the status retrieved.
* @return `true` on success, `false` if the attribute is not set or set to an empty string.
*/
bool ResponseStatusFromXml(pugi::xml_attribute const & attribute, ResponseStatus & status)
{
std::string statusString;
if (!StringFromXml(attribute, statusString))
return false;
if (statusString == "OK")
status = ResponseStatus::Ok;
else if (statusString == "INVALID")
status = ResponseStatus::InvalidOperation;
else if (statusString == "SUBSCRIPTION_REJECTED")
status = ResponseStatus::SubscriptionRejected;
else if (statusString == "NOT_COVERED")
status = ResponseStatus::NotCovered;
else if (statusString == "PARTIALLY_COVERED")
status = ResponseStatus::PartiallyCovered;
else if (statusString == "SUBSCRIPTION_UNKNOWN")
status = ResponseStatus::SubscriptionUnknown;
else if (statusString == "PUSH_REJECTED")
status = ResponseStatus::PushRejected;
else if (statusString == "INTERNAL_ERROR")
status = ResponseStatus::InternalError;
else
status = ResponseStatus::Invalid;
return true;
}
/**
* @brief Retrieves a boolean value from an attribute.
* @param attribute The XML attribute to retrieve.
@@ -1057,14 +1092,21 @@ void MessageToXml(TraffMessage const & message, pugi::xml_node node)
}
}
bool ParseTraff(pugi::xml_document const & document,
std::optional<std::reference_wrapper<const DataSource>> dataSource,
TraffFeed & feed)
/**
* @brief Retrieves a TraFF feed from an XML element.
* @param node The XML element to retrieve (`feed`).
* @param dataSource The data source for coloring, see `ParseTraff()`.
* @param feed Receives the feed.
* @return `true` on success, `false` if the node does not exist or does not contain valid message data.
*/
bool FeedFromXml(pugi::xml_node const & node,
std::optional<std::reference_wrapper<const DataSource>> dataSource,
TraffFeed & feed)
{
bool result = false;
// Select all messages elements that are direct children of the root.
auto const messages = document.document_element().select_nodes("./message");
// Select all messages elements that are direct children of the node.
auto const messages = node.select_nodes("./message");
if (messages.empty())
return true;
@@ -1085,6 +1127,13 @@ bool ParseTraff(pugi::xml_document const & document,
return result;
}
bool ParseTraff(pugi::xml_document const & document,
std::optional<std::reference_wrapper<const DataSource>> dataSource,
TraffFeed & feed)
{
return FeedFromXml(document.document_element(), dataSource, feed);
}
void GenerateTraff(TraffFeed const & feed, pugi::xml_document & document)
{
auto root = document.append_child("feed");
@@ -1117,4 +1166,39 @@ std::string FiltersToXml(std::vector<m2::RectD> & bboxRects)
mercator::XToLon(rect.maxX()));
return os.str();
}
TraffResponse ParseResponse(std::string const & responseXml)
{
TraffResponse result;
pugi::xml_document responseDocument;
if (!responseDocument.load_string(responseXml.c_str()))
return result;
auto const responseElement = responseDocument.document_element();
std::string responseElementName(responseElement.name());
if (responseElementName != "response")
return result;
if (!ResponseStatusFromXml(responseElement.attribute("status"), result.m_status))
return result;
StringFromXml(responseElement.attribute("subscription_id"), result.m_subscriptionId);
IntegerFromXml(responseElement.attribute("timeout"), result.m_timeout);
LOG(LDEBUG, ("Response, status:", result.m_status, "subscription ID:", result.m_subscriptionId, "timeout:", result.m_timeout));
if (responseElement.child("feed"))
{
TraffFeed feed;
FeedFromXml(responseElement.child("feed"), std::nullopt /* dataSource */, feed);
LOG(LDEBUG, ("Feed received, number of messages:", feed.size()));
result.m_feed = std::move(feed);
}
else
LOG(LDEBUG, ("No feed in response"));
return result;
}
} // namespace openlr