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Fixed the duplicate portmappings caused by Docker's /containers/json API returning two Ports entries for every bound port

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This commit is contained in:
mrkmntal 2026-08-29 21:25:58 -04:00
commit c3419524e5
5 changed files with 24 additions and 5 deletions
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7
src/container_parser.cpp
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@ -3,6 +3,7 @@
#include <nlohmann/json.hpp>
#include <sstream>
#include <unordered_set>
using json = nlohmann::json;
@ -17,6 +18,7 @@ std::string portsFor(const json& item) {
const auto it = item.find("Ports");
if (it == item.end() || !it->is_array()) return {};
std::ostringstream result;
std::unordered_set<std::string> seen;
bool first = true;
for (const auto& port : *it) {
if (!port.is_object()) continue;
@ -24,8 +26,11 @@ std::string portsFor(const json& item) {
const auto private_it = port.find("PrivatePort");
if (public_it == port.end() || private_it == port.end() ||
!public_it->is_number() || !private_it->is_number()) continue;
const std::string mapping = std::to_string(public_it->get<int>()) + ":" +
std::to_string(private_it->get<int>());
if (!seen.insert(mapping).second) continue;
if (!first) result << ", ";
result << *public_it << ":" << *private_it;
result << mapping;
first = false;
}
return result.str();