Class: Nvoi::Cli::Db::Command

Inherits:
Object
  • Object
show all
Defined in:
lib/nvoi/cli/db/command.rb

Overview

Command handles database branch operations (backup/restore)

Constant Summary collapse

BRANCHES_DIR = 
"/mnt/db-branches"

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Command

Returns a new instance of Command.



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# File 'lib/nvoi/cli/db/command.rb', line 10

def initialize(options)
  @options = options
  @log = Nvoi.logger
end

Instance Method Details

#branch_create(name = nil) ⇒ Object 



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# File 'lib/nvoi/cli/db/command.rb', line 15

def branch_create(name = nil)
  init_db_context

  name ||= generate_branch_id

  @log.info "Creating database branch: %s", name
  @log.separator

  with_ssh do |ssh|
    opts = build_dump_options

    @log.step "Dumping database"
    dump_data = @db_provider.dump(ssh, opts)
    @log.ok "Dump complete (%d bytes)", dump_data.bytesize

    @log.step "Saving branch"
    app_name = @config.deploy.application.name
    branches_path = "#{BRANCHES_DIR}/#{app_name}"

    ssh.execute("mkdir -p #{branches_path}")

    dump_file = "#{branches_path}/#{name}.#{@db_provider.extension}"
    write_file_via_ssh(ssh, dump_file, dump_data)

    update_branch_metadata(ssh, branches_path, name, dump_data.bytesize)

    @log.ok "Branch saved: %s", dump_file
  end

  @log.separator
  @log.success "Branch created: %s", name

  name
end

#branch_download(branch_id) ⇒ Object 



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# File 'lib/nvoi/cli/db/command.rb', line 127

def branch_download(branch_id)
  init_db_context

  output_path = @options[:path] || "#{branch_id}.#{@db_provider.extension}"

  @log.info "Downloading branch: %s", branch_id

  dump_data = nil

  with_ssh do |ssh|
    app_name = @config.deploy.application.name
    branches_path = "#{BRANCHES_DIR}/#{app_name}"
    dump_file = "#{branches_path}/#{branch_id}.#{@db_provider.extension}"

    unless ssh.execute("test -f #{dump_file} && echo yes || echo no").strip == "yes"
      raise Errors::ServiceError, "Branch not found: #{branch_id}"
    end

    dump_data = ssh.execute("cat #{dump_file}")
  end

  File.write(output_path, dump_data)

  @log.success "Downloaded to: %s (%d bytes)", output_path, dump_data.bytesize

  output_path
end

#branch_list ⇒ Object 



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# File 'lib/nvoi/cli/db/command.rb', line 50

def branch_list
  init_db_context

  branches = []

  with_ssh do |ssh|
    app_name = @config.deploy.application.name
    branches_path = "#{BRANCHES_DIR}/#{app_name}"
    metadata_file = "#{branches_path}/branches.json"

    result = ssh.execute("test -f #{metadata_file} && cat #{metadata_file} || echo '{}'")

    begin
      metadata = External::Database::Types::BranchMetadata.from_json(result)
      branches = metadata.branches
    rescue JSON::ParserError
      branches = []
    end
  end

  if branches.empty?
    @log.info "No branches found"
  else
    @log.info "Database branches:"
    @log.info ""
    @log.info "%-20s %-20s %-12s %-10s", "ID", "Created", "Size", "Adapter"
    @log.info "-" * 70

    branches.each do |b|
      size_str = format_size(b.size)
      created = b.created_at[0, 19].gsub("T", " ") rescue b.created_at
      @log.info "%-20s %-20s %-12s %-10s", b.id, created, size_str, b.adapter
    end
  end

  branches
end

#branch_restore(branch_id, new_db_name = nil) ⇒ Object 



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# File 'lib/nvoi/cli/db/command.rb', line 88

def branch_restore(branch_id, new_db_name = nil)
  init_db_context

  new_db_name ||= "#{@creds.database}_#{branch_id.gsub('-', '_')}"

  @log.info "Restoring branch %s to database %s", branch_id, new_db_name
  @log.separator

  with_ssh do |ssh|
    app_name = @config.deploy.application.name
    branches_path = "#{BRANCHES_DIR}/#{app_name}"
    dump_file = "#{branches_path}/#{branch_id}.#{@db_provider.extension}"

    unless ssh.execute("test -f #{dump_file} && echo yes || echo no").strip == "yes"
      raise Errors::ServiceError, "Branch not found: #{branch_id}"
    end

    @log.step "Reading branch data"
    dump_data = ssh.execute("cat #{dump_file}")

    opts = build_restore_options(new_db_name)

    @log.step "Restoring to new database"
    result = @db_provider.restore(ssh, dump_data, opts)
    @log.ok "Restore complete"

    if @db_provider.is_a?(External::Database::Sqlite)
      @log.info "New database path: %s", result
    end
  end

  @log.separator
  @log.success "Branch restored: %s -> %s", branch_id, new_db_name

  output_credentials_helper(new_db_name)

  new_db_name
end