diff options
Diffstat (limited to 'examples/example02_streaming.cpp')
-rw-r--r-- | examples/example02_streaming.cpp | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/examples/example02_streaming.cpp b/examples/example02_streaming.cpp new file mode 100644 index 0000000..0f95343 --- /dev/null +++ b/examples/example02_streaming.cpp @@ -0,0 +1,102 @@ +/* This file is part of mastodonpp. + * Copyright © 2020 tastytea <tastytea@tastytea.de> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY + * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION + * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN + * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +// Print information about an instance (/api/v1/instance). + +#include "mastodonpp.hpp" + +#include <chrono> +#include <iostream> +#include <string> +#include <string_view> +#include <thread> +#include <vector> + +namespace masto = mastodonpp; +using namespace std::chrono_literals; +using std::cout; +using std::cerr; +using std::endl; +using std::to_string; +using std::string_view; +using std::thread; +using std::this_thread::sleep_for; +using std::vector; + +int main(int argc, char *argv[]) +{ + const vector<string_view> args(argv, argv + argc); + if (args.size() <= 1) + { + cerr << "Usage: " << args[0] << " <instance hostname>\n"; + return 1; + } + + try + { + // Initialize an Instance. + masto::Instance instance{args[1], {}}; + + // Initialize a Connection. + masto::Connection connection{instance}; + + // Find out if the streaming service is fine. + auto answer{connection.get(masto::API::v1::streaming_health)}; + if (answer && answer.body == "OK") + { + // Make a thread, get all public events. + thread stream_thread{[&] + { + answer = connection.get(masto::API::v1::streaming_public); + }}; + + // Print new events every 2 seconds, for 10 seconds. + for (auto counter{0}; counter < 5; ++counter) + { + cout << "----------------------------------------" << endl; + sleep_for(2s); + cout << connection.get_new_stream_contents() << endl; + } + + // Cancel the stream, … + connection.cancel_stream(); + // … and get the rest of the data. + cout << connection.get_new_stream_contents() << endl; + stream_thread.join(); + } + else + { + if (answer.curl_error_code == 0) + { + // If it is no libcurl error, it must be an HTTP error. + cerr << "HTTP status: " << answer.http_status << endl; + } + else + { + // Network errors like “Couldn't resolve host.”. + cerr << "libcurl error " << to_string(answer.curl_error_code) + << ": " << answer.error_message << endl; + } + } + } + catch (const masto::CURLException &e) + { + // Only libcurl errors that are not network errors will be thrown. + // There went probably something wrong with the initialization. + cerr << e.what() << endl; + } + + return 0; +} |