How to use create_embedded_plot method in autotest

Best Python code snippet using autotest_python

graphing_utils.py

Source:graphing_utils.py

...645    plot_info = QualificationHistogram(query, filter_string, interval,646                                       drilldown_callback)647    figure, area_data = _create_qual_histogram_helper(plot_info, extra_text)648    return _create_image_html(figure, area_data, plot_info)649def create_embedded_plot(model, update_time):650    """\651    Given an EmbeddedGraphingQuery object, generate the PNG image for it.652    model: EmbeddedGraphingQuery object653    update_time: 'Last updated' time654    """655    params = pickle.loads(model.params)656    extra_text = 'Last updated: %s' % update_time657    if model.graph_type == 'metrics':658        plot_info = MetricsPlot(query_dict=params['queries'],659                                plot_type=params['plot'],660                                inverted_series=params['invert'],661                                normalize_to=None,662                                drilldown_callback='')663        figure, areas_unused = _create_metrics_plot_helper(plot_info,664                                                           extra_text)665    elif model.graph_type == 'qual':666        plot_info = QualificationHistogram(667            query=params['query'], filter_string=params['filter_string'],668            interval=params['interval'], drilldown_callback='')669        figure, areas_unused = _create_qual_histogram_helper(plot_info,670                                                             extra_text)671    else:672        raise ValueError('Invalid graph_type %s' % model.graph_type)673    image, bounding_box_unused = _create_png(figure)674    return image675_cache_timeout = global_config.global_config.get_config_value(676    'AUTOTEST_WEB', 'graph_cache_creation_timeout_minutes')677def handle_plot_request(id, max_age):678    """\679    Given the embedding id of a graph, generate a PNG of the embedded graph680    associated with that id.681    id: id of the embedded graph682    max_age: maximum age, in minutes, that a cached version should be held683    """684    model = models.EmbeddedGraphingQuery.objects.get(id=id)685    # Check if the cached image needs to be updated686    now = datetime.datetime.now()687    update_time = model.last_updated + datetime.timedelta(minutes=int(max_age))688    if now > update_time:689        cursor = django.db.connection.cursor()690        # We want this query to update the refresh_time only once, even if691        # multiple threads are running it at the same time. That is, only the692        # first thread will win the race, and it will be the one to update the693        # cached image; all other threads will show that they updated 0 rows694        query = """695            UPDATE embedded_graphing_queries696            SET refresh_time = NOW()697            WHERE id = %s AND (698                refresh_time IS NULL OR699                refresh_time + INTERVAL %s MINUTE < NOW()700            )701        """702        cursor.execute(query, (id, _cache_timeout))703        # Only refresh the cached image if we were successful in updating the704        # refresh time705        if cursor.rowcount:706            model.cached_png = create_embedded_plot(model, now.ctime())707            model.last_updated = now708            model.refresh_time = None709            model.save()...

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