README.md

Ruby Client for Cloud Bigtable API

Cloud Bigtable API: API for reading and writing the contents of Bigtables associated with a cloud project.

• Client Library Documentation
• Product Documentation

Quick Start

In order to use this library, you first need to go through the following steps:

1. Select or create a Cloud Platform project.
2. Enable billing for your project.
3. Enable the Cloud Bigtable API.
4. Setup Authentication.

Installation

$ gem install google-cloud-bigtable

Next Steps

• Read the Client Library Documentation for Cloud Bigtable API to see other available methods on the client.
• Read the Cloud Bigtable API Product documentation to learn more about the product and see How-to Guides.
• View this repository's main README to see the full list of Cloud APIs that we cover.

Authentication

This library uses Service Account credentials to connect to Google Cloud services. When running on Google Cloud Platform (GCP), including Google Compute Engine (GCE), Google Kubernetes Engine (GKE), Google App Engine (GAE), Google Cloud Functions (GCF) and Cloud Run, the credentials will be discovered automatically. When running on other environments the Service Account credentials can be specified by providing the path to the JSON file, or the JSON itself, in environment variables.

Instructions and configuration options are covered in the Authentication Guide.

Example

require "google/cloud/bigtable"

bigtable = Google::Cloud::Bigtable.new

table = bigtable.table("my-instance", "my-table")

entry = table.new_mutation_entry("user-1")
entry.set_cell(
  "cf1",
  "field1",
  "XYZ",
  timestamp: Time.now.to_i * 1000 # Time stamp in milli seconds.
).delete_cells("cf2", "field02")

table.mutate_row(entry)

Enabling Logging

To enable logging for this library, set the logger for the underlying gRPC library. The logger that you set may be a Ruby stdlib Logger as shown below, or a Google::Cloud::Logging::Logger that will write logs to Stackdriver Logging. See grpc/logconfig.rb and the gRPC spec_helper.rb for additional information.

Configuring a Ruby stdlib logger:

require "logger"

module MyLogger
  LOGGER = Logger.new $stderr, level: Logger::WARN
  def logger
    LOGGER
  end
end

# Define a gRPC module-level logger method before grpc/logconfig.rb loads.
module GRPC
  extend MyLogger
end

Supported Ruby Versions

This library is supported on Ruby 2.5+.

Google provides official support for Ruby versions that are actively supported by Ruby Core—that is, Ruby versions that are either in normal maintenance or in security maintenance, and not end of life. Currently, this means Ruby 2.5 and later. Older versions of Ruby may still work, but are unsupported and not recommended. See https://www.ruby-lang.org/en/downloads/branches/ for details about the Ruby support schedule.