/
viewer.rb
387 lines (328 loc) · 13.2 KB
/
viewer.rb
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# frozen_string_literal: true
require 'json'
module Logster
module Middleware
class Viewer
PATH_INFO = "PATH_INFO".freeze
SCRIPT_NAME = "SCRIPT_NAME".freeze
REQUEST_METHOD = "REQUEST_METHOD".freeze
def initialize(app)
@app = app
@logs_path = Logster.config.subdirectory
@path_regex = Regexp.new("^(#{@logs_path}$)|^(#{@logs_path}(/.*))$")
(@store = Logster.store) || raise(ArgumentError.new("store"))
@assets_path = File.expand_path("../../../../assets", __FILE__)
@fileserver = Rack::File.new(@assets_path)
end
def call(env)
path = env[PATH_INFO]
script_name = env[SCRIPT_NAME]
if script_name && script_name.length > 0
path = script_name + path
end
if resource = resolve_path(path)
if resource =~ /\.ico$|\.js$|\.png|\.handlebars$|\.css$|\.woff$|\.ttf$|\.woff2$|\.svg$|\.otf$|\.eot$/
serve_file(env, resource)
elsif resource.start_with?("/messages.json")
serve_messages(Rack::Request.new(env))
elsif resource =~ /\/message\/([0-9a-f]+)$/
if env[REQUEST_METHOD] != "DELETE"
return method_not_allowed("DELETE")
end
key = $1
message = Logster.store.get(key)
unless message
return [404, {}, ["Message not found"]]
end
Logster.store.delete(message)
return [301, { "Location" => "#{@logs_path}/" }, []]
elsif resource =~ /\/(un)?protect\/([0-9a-f]+)$/
off = $1 == "un"
key = $2
message = Logster.store.get(key)
unless message
return [404, {}, ["Message not found"]]
end
if off
if Logster.store.unprotect(key)
return [301, { "Location" => "#{@logs_path}/show/#{key}?protected=false" }, []]
else
return [500, {}, ["Failed"]]
end
else
if Logster.store.protect(key)
return [301, { "Location" => "#{@logs_path}/show/#{key}?protected=true" }, []]
else
return [500, {}, ["Failed"]]
end
end
elsif resource =~ /\/solve\/([0-9a-f]+)$/
key = $1
message = Logster.store.get(key)
unless message
return [404, {}, ["Message not found"]]
end
Logster.store.solve(key)
return [301, { "Location" => "#{@logs_path}" }, []]
elsif resource =~ /\/clear$/
if env[REQUEST_METHOD] != "POST"
return method_not_allowed("POST")
end
Logster.store.clear
return [200, {}, ["Messages cleared"]]
elsif resource =~ /\/show\/([0-9a-f]+)(\.json)?$/
key = $1
json = $2 == ".json"
message = Logster.store.get(key)
unless message
return [404, {}, ["Message not found"]]
end
if json
[200, { "Content-Type" => "application/json; charset=utf-8" }, [message.to_json]]
else
preload = preload_json("/show/#{key}" => message)
[200, { "Content-Type" => "text/html; charset=utf-8" }, [body(preload)]]
end
elsif resource =~ /\/settings(\.json)?$/
json = $1 == ".json"
if json
ignore_count = Logster.store.get_all_ignore_count
suppression = []
Logster.store.ignore&.each do |pattern|
string_pattern = Regexp === pattern ? pattern.inspect : pattern.to_s
count = ignore_count[string_pattern] || 0
suppression << { value: string_pattern, count: count, hard: true }
end
Logster::SuppressionPattern.find_all(raw: true).each do |pattern|
count = ignore_count[pattern] || 0
suppression << { value: pattern, count: count }
end
grouping = Logster::GroupingPattern.find_all(raw: true).map do |pattern|
{ value: pattern }
end
[200, { "Content-Type" => "application/json; charset=utf-8" }, [JSON.generate(suppression: suppression, grouping: grouping)]]
else
[200, { "Content-Type" => "text/html; charset=utf-8" }, [body(preload_json)]]
end
elsif resource =~ /\/patterns\/([a-zA-Z0-9_]+)\.json$/
unless Logster.config.enable_custom_patterns_via_ui
return not_allowed("Custom patterns via the UI is disabled. You can enable it by committing this line to your app source code:\nLogster.config.enable_custom_patterns_via_ui = true")
end
set_name = $1
req = Rack::Request.new(env)
return method_not_allowed(%w[POST PUT DELETE]) if req.request_method == "GET"
update_patterns(set_name, req)
elsif resource == "/reset-count.json"
req = Rack::Request.new(env)
return method_not_allowed("PUT") if req.request_method != "PUT"
pattern = nil
if [true, "true"].include?(req.params["hard"])
pattern = Logster.store.ignore.find do |patt|
str = Regexp === patt ? patt.inspect : patt.to_s
str == req.params["pattern"]
end
else
pattern = Logster::SuppressionPattern.find_all(raw: true).find do |patt|
patt == req.params["pattern"]
end
end
return not_found("Pattern not found") unless pattern
pattern = Regexp === pattern ? pattern.inspect : pattern.to_s
Logster.store.remove_ignore_count(pattern)
[200, {}, ["OK"]]
elsif resource == "/"
[200, { "Content-Type" => "text/html; charset=utf-8" }, [body(preload_json)]]
elsif resource =~ /\/fetch-env\/([0-9a-f]+)\.json$/
key = $1
env = Logster.store.get_env(key)
if env
[200, { "Content-Type" => "application/json; charset=utf-8" }, [JSON.generate(env)]]
else
not_found
end
elsif resource == '/solve-group'
return not_allowed unless Logster.config.enable_custom_patterns_via_ui
req = Rack::Request.new(env)
return method_not_allowed("POST") if req.request_method != "POST"
group = Logster.store.find_pattern_groups do |patt|
patt.inspect == req.params["regex"]
end.first
return not_found("No such pattern group exists") if !group
group.messages_keys.each { |k| Logster.store.solve(k) }
return [200, {}, []]
else
not_found
end
else
@app.call(env)
end
end
protected
def serve_file(env, path)
env[PATH_INFO] = path
# accl redirect is going to be trouble, ensure its bypassed
env['sendfile.type'] = ''
@fileserver.call(env)
end
def serve_messages(req)
params = req.params
opts = {
before: params["before"],
after: params["after"]
}
if (filter = params["filter"])
filter = filter.split("_").map { |s| s.to_i }
opts[:severity] = filter
end
if search = params["search"]
search = (parse_regex(search) || search) if params["regex_search"] == "true"
opts[:search] = search
end
search = opts[:search]
if params["known_groups"]
opts[:known_groups] = params["known_groups"]
end
opts[:with_env] = (String === search && search.size > 0) || Regexp === search
payload = {
messages: @store.latest(opts),
total: @store.count,
search: params['search'] || '',
filter: filter || '',
}
json = JSON.generate(payload)
[200, { "Content-Type" => "application/json" }, [json]]
end
def update_patterns(set_name, req)
klass = get_class(set_name)
return not_found("Unknown set name") unless klass
request_method = req.request_method
pattern = req.params["pattern"]
record = request_method == "POST" ? klass.new(pattern) : klass.find(pattern)
return not_found unless record
case request_method
when "POST"
args = {}
if Logster::SuppressionPattern === record && [true, "true"].include?(req.params["retroactive"])
args[:retroactive] = true
end
record.save(args)
when "PUT"
record.modify(req.params["new_pattern"])
when "DELETE"
record.destroy
else
return method_not_allowed(%w[POST PUT DELETE])
end
[200, { "Content-Type" => "application/json" }, [JSON.generate(pattern: record.to_s)]]
rescue => err
error_message = err.message
unless Logster::Pattern::PatternError === err # likely a bug, give us the backtrace
error_message += "\n\n#{err.backtrace.join("\n")}"
return [500, {}, [error_message]]
end
[400, {}, [error_message]]
end
def get_class(set_name)
case set_name
when "suppression"
Logster::SuppressionPattern
when "grouping"
Logster::GroupingPattern
else
nil
end
end
def not_found(message = "Not found")
[404, {}, [message]]
end
def not_allowed(message = "Not allowed")
[403, {}, [message]]
end
def method_not_allowed(allowed_methods)
if Array === allowed_methods
allowed_methods = allowed_methods.join(", ")
end
[405, { "Allow" => allowed_methods }, []]
end
def parse_regex(string)
if string =~ /\/(.+)\/(.*)/
s = $1
flags = Regexp::IGNORECASE if $2 && $2.include?("i")
Regexp.new(s, flags) rescue nil
end
end
def resolve_path(path)
if path =~ @path_regex
$3 || "/"
end
end
def preload_json(extra = {})
values = {}
values.merge!(extra)
end
def css(name, attrs = {})
attrs = attrs.map do |k, v|
"#{k}='#{v}'"
end.join(" ")
"<link rel='stylesheet' type='text/css' href='#{@logs_path}/stylesheets/#{name}' #{attrs}>"
end
def script(prod, dev = nil)
name = ENV['DEBUG_JS'] == "1" && dev ? dev : prod
"<script src='#{@logs_path}/javascript/#{name}'></script>"
end
def to_json_and_escape(payload)
Rack::Utils.escape_html(JSON.fast_generate(payload))
end
def preload_backtrace_data
gems_data = []
Gem::Specification.find_all do |gem|
url = gem.metadata["source_code_uri"] || gem.homepage
if url && url.match(/^https?:\/\/github.com\//)
gems_data << { name: gem.name, url: url }
end
end
{
gems_data: gems_data,
directories: Logster.config.project_directories
}
end
def body(preload)
root_url = @logs_path
root_url += "/" if root_url[-1] != "/"
preload.merge!(
env_expandable_keys: Logster.config.env_expandable_keys,
patterns_enabled: Logster.config.enable_custom_patterns_via_ui,
application_version: Logster.config.application_version
)
backtrace_links_enabled = Logster.config.enable_backtrace_links
gems_dir = Logster.config.gems_dir
gems_dir += "/" if gems_dir[-1] != "/"
preload.merge!(gems_dir: gems_dir, backtrace_links_enabled: backtrace_links_enabled)
if backtrace_links_enabled
preload.merge!(preload_backtrace_data)
end
<<~HTML
<!doctype html>
<html>
<head>
<link rel="shortcut icon" href="#{@logs_path}/images/icon_64x64.png">
<link rel="apple-touch-icon" href="#{@logs_path}/images/icon_144x144.png" />
<title>#{Logster.config.web_title || "Logs"}</title>
<link href='//fonts.googleapis.com/css?family=Roboto' rel='stylesheet' type='text/css'>
<link href='//fonts.googleapis.com/css?family=Roboto+Mono' rel='stylesheet' type='text/css'>
<meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.0, user-scalable=yes">
#{css("vendor.css")}
#{css("client-app.css")}
#{script("vendor.js")}
<meta id="preloaded-data" data-root-path="#{@logs_path}" data-preloaded="#{to_json_and_escape(preload)}">
<meta name="client-app/config/environment" content="%7B%22modulePrefix%22%3A%22client-app%22%2C%22environment%22%3A%22production%22%2C%22rootURL%22%3A%22#{root_url}%22%2C%22locationType%22%3A%22history%22%2C%22EmberENV%22%3A%7B%22FEATURES%22%3A%7B%7D%2C%22EXTEND_PROTOTYPES%22%3A%7B%22Date%22%3Afalse%7D%7D%2C%22APP%22%3A%7B%22name%22%3A%22client-app%22%2C%22version%22%3A%220.0.0+8c60a18b%22%7D%2C%22exportApplicationGlobal%22%3Afalse%7D" />
</head>
<body>
#{script("client-app.js")}
</body>
</html>
HTML
end
end
end
end