Class: Chef::Knife::TidyServerReport

Inherits:
Chef::Knife show all
Includes:
TidyBase
Defined in:
lib/chef/knife/tidy_server_report.rb

Instance Method Summary collapse

Methods included from TidyBase

#action_needed, #action_needed_file_path, #completion_message, included, #rest, #server, #server_warnings_file_path, #tidy

Instance Method Details

#all_environments(org) ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 200

def all_environments(org)
  rest.get("/organizations/#{org}/environments").values
end

#all_orgs ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 196

def all_orgs
  rest.get("organizations").keys
end

#check_cookbook_list(cb_list, cb, version) ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 219

def check_cookbook_list(cb_list, cb, version)
  if cb_list[cb]
    cb_list[cb].each do |v|
      versions_not_satisfied = []
      if Gem::Dependency.new("", version).match?("", v)
        return [v]
      else
        versions_not_satisfied.push(v)
      end

      if v == cb_list[cb].last
        ui.warn("Pin of #{cb} #{version} not satisfied by current versions of cookbook: [#{versions_not_satisfied.join(", ")}]")
      end
    end
  else
    ui.warn("Cookbook #{cb} #{version} is pinned in an environment, but does not exist on the server in this org.")
  end
  nil
end

#check_environment_pins(used_cookbooks, pins, cb_list) ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 239

def check_environment_pins(used_cookbooks, pins, cb_list)
  pins.each do |cb, versions|
    versions.each do |version|
      next if version == "<= 0.0.0"

      if used_cookbooks[cb]
        # This pinned cookbook is in the used list, now check for a matching version.
        used_cookbooks[cb].each do |v|
          if Gem::Dependency.new("", version).match?("", v)
            break
          end
        end
        result = check_cookbook_list(cb_list, cb, version)
        used_cookbooks[cb].push(result[0]) if result && !used_cookbooks[cb].include?(result[0])
      else
        # No cookbook version for that pin, look through the full cookbook list for a match
        result = check_cookbook_list(cb_list, cb, version)
        used_cookbooks[cb] = result if result
      end
    end
  end
  used_cookbooks
end

#cookbook_count(cb_list) ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 174

def cookbook_count(cb_list)
  cb_count_list = {}
  cb_list.each do |name, versions|
    cb_count_list[name] = versions.count
  end
  cb_count_list
end

#cookbook_list(org) ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 150

def cookbook_list(org)
  cb_list = {}
  rest.get("/organizations/#{org}/cookbooks?num_versions=all").each do |name, data|
    data["versions"].each do |version_hash|
      version = Gem::Version.new(version_hash["version"]).to_s
      if cb_list[name] && !cb_list[name].include?(version)
        cb_list[name].push(version)
      else
        cb_list[name] = [version]
      end
    end
  end
  cb_list
end

#delete_existing_reports ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 124

def delete_existing_reports
  files = Dir[::File.join(tidy.reports_dir, "*.json")]
  unless files.empty?
    ui.confirm("You have existing reports in #{tidy.reports_dir}. Remove")
    FileUtils.rm(files, force: true)
  end
end

#ensure_reports_dir! ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 120

def ensure_reports_dir!
  Dir.mkdir(tidy.reports_dir) unless Dir.exist?(tidy.reports_dir)
end

#environment_constraints(org) ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 204

def environment_constraints(org)
  constraints = {}
  all_environments(org).each do |env|
    e = rest.get(env)
    e["cookbook_versions"].each do |cb, version|
      if constraints[cb]
        constraints[cb].push(version) unless constraints[cb].include?(version)
      else
        constraints[cb] = [version]
      end
    end
  end
  constraints
end

#keep_cookbook_versions(cb_list, min) ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 165

def keep_cookbook_versions(cb_list, min)
  retain = {}
  cb_list.each do |name, versions|
    keep = versions.sort { |a, b| Gem::Version.new(a) <=> Gem::Version.new(b) }.last(min)
    retain[name] = keep
  end
  retain
end

#nodes_list(org) ⇒ Object

Need the block here to get the search method to invoke multiple searches and aggregate results for result sets over 1k.



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# File 'lib/chef/knife/tidy_server_report.rb', line 134

def nodes_list(org)
  node_results = []
  Chef::Search::Query.new("#{server.root_url}/organizations/#{org}").search(
    :node, "*:*",
    filter_result: {
      "name" => ["name"],
      "cookbooks" => ["cookbooks"],
      "ohai_time" => ["ohai_time"],
      "chef_packages" => ["chef_packages"],
    }
  ) do |node|
    node_results << node
  end
  node_results
end

#run ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 25

def run
  ensure_reports_dir!
  FileUtils.rm_f(server_warnings_file_path)

  ui.stdout.puts(ui.color("Writing to #{tidy.reports_dir} directory", :magenta))
  delete_existing_reports

  orgs = if config[:org_list]
           config[:org_list].split(",")
         else
           all_orgs
         end

  stale_orgs = []
  node_threshold = config[:node_threshold].to_i
  keep_versions  = config[:keep_versions].to_i

  orgs.each do |org|
    pre_12_3_nodes = []
    unconverged_recent_nodes = []
    ui.info "  Organization: #{org}"
    cb_list = cookbook_list(org)
    version_count = cookbook_count(cb_list).sort_by(&:last).reverse.to_h
    used_cookbooks = {}
    nodes = nodes_list(org)
    db_nodes = rest.get("/organizations/#{org}/nodes")
    unless nodes.length == db_nodes.length
      ood_message = "Search index is out of date (search returned #{nodes.length} nodes while the database indicates there are #{db_nodes.length} nodes! No action will be taken for #{org}. Perhaps a 'chef-server-ctl reindex' is in order?"
      ui.error(ood_message)
      action_needed(ood_message, server_warnings_file_path)
      next
    end

    nodes.each do |node|
      # If the node hasn't checked in.
      unless node["chef_packages"]
        # If the node is under an hour old.
        if (Time.now.to_i - node["ohai_time"].to_i) < 3600
          unconverged_recent_nodes << node["name"]
        end
        next
      end
      chef_version = Gem::Version.new(node["chef_packages"]["chef"]["version"])
      # If the node has checked in within the node_threshold with a client older than 12.3
      if chef_version < Gem::Version.new("12.3") && (Time.now.to_i - node["ohai_time"].to_i) <= node_threshold * 86400
        pre_12_3_nodes << node["name"]
      end
    end

    nodes.select { |node| !node["cookbooks"].nil? }.each do |node|
      node["cookbooks"].each do |name, version_hash|
        version = Gem::Version.new(version_hash["version"]).to_s
        if used_cookbooks[name]
          used_cookbooks[name].push(version) unless used_cookbooks[name].include?(version)
        else
          used_cookbooks[name] = [version]
        end
      end
    end

    used_cookbooks = keep_cookbook_versions(cb_list, keep_versions)

    Chef::Log.debug("Used cookbook list before checking environments: #{used_cookbooks}")
    pins = environment_constraints(org)
    used_cookbooks = check_environment_pins(used_cookbooks, pins, cb_list)

    stale_nodes = []
    nodes.each do |n|
      if (Time.now.to_i - n["ohai_time"].to_i) >= node_threshold * 86400
        stale_nodes.push(n["name"])
      end
    end

    stale_nodes_hash = { 'threshold_days': node_threshold, 'org_total_node_count': nodes.count, 'count': stale_nodes.count, 'list': stale_nodes }
    stale_orgs.push(org) if stale_nodes.count == nodes.count

    tidy.write_new_file(unused_cookbooks(used_cookbooks, cb_list), ::File.join(tidy.reports_dir, "#{org}_unused_cookbooks.json"), backup = false)
    tidy.write_new_file(version_count, ::File.join(tidy.reports_dir, "#{org}_cookbook_count.json"), backup = false)
    tidy.write_new_file(stale_nodes_hash, ::File.join(tidy.reports_dir, "#{org}_stale_nodes.json"), backup = false)

    if pre_12_3_nodes.length > 0
      pre_12_3_message = "#{pre_12_3_nodes.length} nodes in organization #{org} have converged in the last #{node_threshold} days with a chef-client < 12.3. These nodes' cookbook versions WILL NOT be factored in the stale cookbooks versions report. Continuing with the server cleanup will delete cookbooks in-use by these nodes."
      ui.warn(pre_12_3_message)
      action_needed(pre_12_3_message, server_warnings_file_path)
    end
    if unconverged_recent_nodes.length > 0
      unconverged_recent_message = "#{unconverged_recent_nodes.length} nodes have been created in the last hour that have yet to converge in organization #{org}. These nodes WILL NOT be factored in the stale cookbook versions report. Continuing with the server cleanup will delete cookbooks in-use by these nodes."
      ui.warn(unconverged_recent_message)
      action_needed(unconverged_recent_message, server_warnings_file_path)
    end
  end

  completion_message
end

#unused_cookbooks(used_list, cb_list) ⇒ Object 



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# File 'lib/chef/knife/tidy_server_report.rb', line 182

def unused_cookbooks(used_list, cb_list)
  unused_list = {}
  cb_list.each do |name, versions|
    versions.sort! { |a, b| Gem::Version.new(a) <=> Gem::Version.new(b) }
    if used_list[name].nil? # Not in the used list at all (Remove all versions)
      unused_list[name] = versions
    elsif used_list[name].sort != versions # Is in the used cookbook list, but version arrays do not match (Find unused versions)
      unused = versions - used_list[name] - [versions.last] # Don't delete the most recent version as it might not be in a run_list yet.
      unused_list[name] = unused unless unused.empty?
    end
  end
  unused_list
end