Home | History | Annotate | Download | only in libmediadrm 
      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 //#define LOG_NDEBUG 0
     18 #define LOG_TAG "PluginMetricsReporting"
     19 #include <utils/Log.h>
     20 
     21 #include <media/PluginMetricsReporting.h>
     22 
     23 #include <media/MediaAnalyticsItem.h>
     24 
     25 #include "protos/plugin_metrics.pb.h"
     26 
     27 namespace android {
     28 
     29 namespace {
     30 
     31 using android::drm_metrics::MetricsGroup;
     32 using android::drm_metrics::MetricsGroup_Metric;
     33 using android::drm_metrics::MetricsGroup_Metric_MetricValue;
     34 
     35 const char* const kParentAttribute = "/parent/external";
     36 
     37 status_t reportMetricsGroup(const MetricsGroup& metricsGroup,
     38                             const String8& batchName,
     39                             const int64_t* parentId) {
     40     MediaAnalyticsItem analyticsItem(batchName.c_str());
     41     analyticsItem.generateSessionID();
     42     int64_t sessionId = analyticsItem.getSessionID();
     43     if (parentId != NULL) {
     44         analyticsItem.setInt64(kParentAttribute, *parentId);
     45     }
     46 
     47     // Report the package name.
     48     if (metricsGroup.has_app_package_name()) {
     49       AString app_package_name(metricsGroup.app_package_name().c_str(),
     50                                metricsGroup.app_package_name().size());
     51       analyticsItem.setPkgName(app_package_name);
     52     }
     53 
     54     for (int i = 0; i < metricsGroup.metric_size(); ++i) {
     55         const MetricsGroup_Metric& metric = metricsGroup.metric(i);
     56         if (!metric.has_name()) {
     57             ALOGE("Metric with no name.");
     58             return BAD_VALUE;
     59         }
     60 
     61         if (!metric.has_value()) {
     62             ALOGE("Metric with no value.");
     63             return BAD_VALUE;
     64         }
     65 
     66         const MetricsGroup_Metric_MetricValue& value = metric.value();
     67         if (value.has_int_value()) {
     68             analyticsItem.setInt64(metric.name().c_str(),
     69                                    value.int_value());
     70         } else if (value.has_double_value()) {
     71             analyticsItem.setDouble(metric.name().c_str(),
     72                                     value.double_value());
     73         } else if (value.has_string_value()) {
     74             analyticsItem.setCString(metric.name().c_str(),
     75                                      value.string_value().c_str());
     76         } else {
     77             ALOGE("Metric Value with no actual value.");
     78             return BAD_VALUE;
     79         }
     80     }
     81 
     82     analyticsItem.setFinalized(true);
     83     if (!analyticsItem.selfrecord()) {
     84       // Note the cast to int is because we build on 32 and 64 bit.
     85       // The cast prevents a peculiar printf problem where one format cannot
     86       // satisfy both.
     87       ALOGE("selfrecord() returned false. sessioId %d", (int) sessionId);
     88     }
     89 
     90     for (int i = 0; i < metricsGroup.metric_sub_group_size(); ++i) {
     91         const MetricsGroup& subGroup = metricsGroup.metric_sub_group(i);
     92         status_t res = reportMetricsGroup(subGroup, batchName, &sessionId);
     93         if (res != OK) {
     94             return res;
     95         }
     96     }
     97 
     98     return OK;
     99 }
    100 
    101 String8 sanitize(const String8& input) {
    102     // Filters the input string down to just alphanumeric characters.
    103     String8 output;
    104     for (size_t i = 0; i < input.size(); ++i) {
    105         char candidate = input[i];
    106         if ((candidate >= 'a' && candidate <= 'z') ||
    107                 (candidate >= 'A' && candidate <= 'Z') ||
    108                 (candidate >= '0' && candidate <= '9')) {
    109             output.append(&candidate, 1);
    110         }
    111     }
    112     return output;
    113 }
    114 
    115 }  // namespace
    116 
    117 status_t reportDrmPluginMetrics(const Vector<uint8_t>& serializedMetrics,
    118                                 const String8& vendor,
    119                                 const String8& description) {
    120     MetricsGroup root_metrics_group;
    121     if (!root_metrics_group.ParseFromArray(serializedMetrics.array(),
    122                                            serializedMetrics.size())) {
    123         ALOGE("Failure to parse.");
    124         return BAD_VALUE;
    125     }
    126 
    127     String8 name = String8::format("drm.vendor.%s.%s",
    128                                    sanitize(vendor).c_str(),
    129                                    sanitize(description).c_str());
    130 
    131     return reportMetricsGroup(root_metrics_group, name, NULL);
    132 }
    133 
    134 }  // namespace android
    135