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e9f5d94c93
Useful when having a service that runs a GStreamer pipeline or application in Google Cloud to avoid storing the inputs and outputs in the running container or service. For example when analyzing a video from a Google Cloud Storage bucket and extracting images or converting the video and then uploading the results into another Google Cloud Storage bucket. - gssrc allows to read from a file located in Google Cloud Storage and it supports seeking. - gssink allows to write to a file located in Google Cloud Storage. There are 2 modes, one similar to multifilesink and the other similar to filesink. Example: gst-launch-1.0 gssrc location=gs://mybucket/videos/sample.mp4 ! decodebin ! glimagesink gst-launch-1.0 playbin uri=gs://mybucket/videos/sample.mp4 gst-launch-1.0 videotestsrc num-buffers=5 ! pngenc ! gssink object-name="img/img%05d.png" bucket-name="mybucket" next-file=buffer gst-launch-1.0 filesrc location=sample.mp4 ! gssink object-name="videos/video.mp4" bucket-name="mybucket" next-file=none When running locally simply set GOOGLE_APPLICATION_CREDENTIALS. But when running in Google Cloud Run or Google Cloud Engine, just set the "service-account-email" property on each element. Closes #1264 Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1369>
135 lines
4 KiB
C++
135 lines
4 KiB
C++
/* GStreamer
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* Copyright (C) 2020 Julien Isorce <jisorce@oblong.com>
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*
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* gstgscommon.h:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "gstgscommon.h"
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#include "google/cloud/storage/oauth2/compute_engine_credentials.h"
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namespace gcs = google::cloud::storage;
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namespace {
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#if !GLIB_CHECK_VERSION(2, 62, 0)
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static inline gchar *
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g_date_time_format_iso8601 (GDateTime * datetime)
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{
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GString *
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outstr = NULL;
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gchar *
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main_date = NULL;
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gint64 offset;
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// Main date and time.
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main_date = g_date_time_format (datetime, "%Y-%m-%dT%H:%M:%S");
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outstr = g_string_new (main_date);
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g_free (main_date);
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// Timezone. Format it as `%:::z` unless the offset is zero, in which case
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// we can simply use `Z`.
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offset = g_date_time_get_utc_offset (datetime);
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if (offset == 0) {
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g_string_append_c (outstr, 'Z');
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} else {
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gchar *
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time_zone = g_date_time_format (datetime, "%:::z");
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g_string_append (outstr, time_zone);
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g_free (time_zone);
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}
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return g_string_free (outstr, FALSE);
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}
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#endif
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} // namespace
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std::unique_ptr <
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google::cloud::storage::Client >
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gst_gs_create_client (const gchar * service_account_email, GError ** error)
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{
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if (service_account_email) {
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// Meant to be used from a container running in the Cloud.
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google::cloud::StatusOr < std::shared_ptr <
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gcs::oauth2::Credentials >> creds (std::make_shared <
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gcs::oauth2::ComputeEngineCredentials <>> (service_account_email));
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if (!creds) {
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g_set_error (error, GST_RESOURCE_ERROR,
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GST_RESOURCE_ERROR_NOT_AUTHORIZED,
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"Could not retrieve credentials for the given service account %s (%s)",
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service_account_email, creds.status ().message ().c_str ());
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return nullptr;
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}
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gcs::ClientOptions client_options (std::move (creds.value ()));
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return std::make_unique < gcs::Client > (client_options,
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gcs::StrictIdempotencyPolicy ());
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}
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// Default account. This is meant to retrieve the credentials automatically
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// using diffrent methods.
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google::cloud::StatusOr < gcs::ClientOptions > client_options =
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gcs::ClientOptions::CreateDefaultClientOptions ();
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if (!client_options) {
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g_set_error (error, GST_RESOURCE_ERROR,
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GST_RESOURCE_ERROR_NOT_AUTHORIZED,
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"Could not create default client options (%s)",
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client_options.status ().message ().c_str ());
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return nullptr;
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}
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return std::make_unique < gcs::Client > (client_options.value (),
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gcs::StrictIdempotencyPolicy ());
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}
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gboolean
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gst_gs_get_buffer_date (GstBuffer * buffer, GDateTime * start_date,
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gchar ** buffer_date_str_ptr)
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{
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gchar *
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buffer_date_str = NULL;
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GstClockTime buffer_timestamp = GST_CLOCK_TIME_NONE;
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GTimeSpan buffer_timespan = 0;
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if (!buffer || !start_date)
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return FALSE;
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buffer_timestamp = GST_BUFFER_PTS (buffer);
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// GTimeSpan is in micro seconds.
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buffer_timespan = GST_TIME_AS_USECONDS (buffer_timestamp);
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GDateTime *
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buffer_date = g_date_time_add (start_date, buffer_timespan);
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if (!buffer_date)
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return FALSE;
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buffer_date_str = g_date_time_format_iso8601 (buffer_date);
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g_date_time_unref (buffer_date);
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if (!buffer_date_str)
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return FALSE;
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if (buffer_date_str_ptr)
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*buffer_date_str_ptr = buffer_date_str;
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return TRUE;
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}
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