Prometheus Exporter for Android phones. It is not yet available in Google Play. Apart from simply exporting available metrics on default HTTP port 10101, it can also traverse NAT by connecting to the PushProx proxy. It also supports scraping metrics locally and storing them in memory while offline and exporting them later while online.

Operation

This application can operate in three modes:

as a Prometheus exporter by exposing metrics on HTTP port 10101
as a PushProx proxy client, to traverse NAT and other network barriers while still following the pull model
as a batch exporter, which can store metrics to memory while device is offline and later export them to Prometheus via remote write protocol while device becomes online

Application is configurable either via its UI or via YAML configuration file.

Repository contents

Folder ./client contains Jetpack Compose android Prometheus exporter written in kotlin.
Folder ./server contains ansible playbook for simple deployment of prometheus monitoring stack on a virtual private server, that is deployment of prometheus database itself, grafana monitoring dashboard and pushprox, a prometheus proxy used to traverse NAT while still following the pull model.
Folder ./local contains simple docker-compose.yaml to spin up prometheus database on localhost quickly.

Not public

143.42.59.63:9090 - prometheus

Client

To format code in android studio

CTRL + SHIFT + ALT + L

File configuration

Client application is configurable via a configuration file. Place such file on your android device at a following path:

data/user/0/com.birdthedeveloper.prometheus.android.exporter/files/

The name of such configuration file can be either config.yaml or config.yml

Configurable fields are described in ./config_file_structure.yaml, all fields are optional.

ADB port forwarding

ADB port forwarding is usefull when running the client application on android emulator and prometheus database on the host ADB port forwarding allows to map specific host's port to emulator's port Syntax is as follows (for port 8080)

$ adb forward tcp:8080 tcp:8080

Server configuration for PushProx proxy

TL;DR

cd ./server

# edit ansible_inventory

# To apply ansible playbook
$ ansible-playbook ansible_playbook.yaml

# To only apply changed configuration
$ ansible-playbook ansible_playbook.yaml --tags config

List of exported metrics:

Android hardware sensors

android_sensor_heading_degrees - Data from the Android heading sensor android_sensor_proximity_metres - Data from the proximity sensor android_sensor_heading_accuracy_degrees - Data from Android the heading sensor android_sensor_hinge_angle_degrees - How much is the hinge opened android_sensor_accelerometer{axis} - Data from the accelerometer android_sensor_magnetic_field_tesla{axis} - Data from the magnetic field sensor in base units android_sensor_gravity_acceleration - Data from gravity acceleration sensor, in m/s^2 units android_sensor_linear_acceleration - Data from the Android linear acceleration sensor in m/s^2 units. android_sensor_pressure_pascal - Data from the Android pressure in pascals android_sensor_ambient_light_lux - Data from Android ambient light sensor in lux android_sensor_gyroscope_radians_per_second_squared - Data from Android gyroscope in radians/second^2 android_sensor_ambient_temperature_celsius - Ambient temperature in celsius android_sensor_rotation_vector - Data from the Android Rotation Vector sensor, how is the device rotated, without a unit android_sensor_rotation_vector_cosinus_theta_half - Data from the Android Rotation Vector sensor, how is the device rotated, without a unit android_sensor_rotation_vector_accuracy_radians - Android rotation vector sensor accuracy in radians

Android network

android_cellular_network_connected - Whether cellular network is connected android_wifi_connected - Whether WiFi is connected

Miscellaneous

android_battery_charge_ratio - Current battery charge android_system_info{manufacturer, model, os_release, cpu_core_count} - Information about Android system android_uptime_seconds - Phone uptime in seconds android_cpu_active_seconds{core} - Active CPU time in seconds since last time system booted android_cpu_total_seconds{core} - Total CPU time in seconds since last time system booted android_system_temperature_celsius{where} - Temperature on the device android_scrape_duration_seconds - Duration of the metric scrape

PushProx client mode specific metrics

pushprox_client_poll_errors_total - Number of errored /poll requests pushprox_client_scrape_errors_total - Total number of scrape errors the PushProx client mode has encountered pushprox_client_push_errors_total - Total number of errored /push requests