I'm trying to parse out JSON data and create my own dictionary to show a subset of the data. The thing is, I'm noticing that my input data changes based on what is scanned (with nmap). Some elements might be an array value, whereas some might not. The combinations seem to be pretty broad.
For instance, here is the simplest input where only an IP address was found:
{
'host' => {
'address' => {
'addr' => '192.168.0.1'
},
'status' => {...}
}
}
But then, the IP and MAC address might be found:
{
'host' => {
'address' => [{
'addrtype' => 'ipv4',
'addr' => '192.168.0.1',
},{
'addrtype' => 'mac',
'mac' => '00:AA:BB:CC:DD:EE',
},
'status' => {...}
}]
}
Those are just a couple examples. Other variations I've seen:
`host.class` = Array
`address.class` = Hash
`host['status'].class` = Array
etc...
As I go through to parse the output, I am first checking if the element is an Array, if it is, I access the key/values one way, whereas if it's not an array, I essentially have to duplicate my code with a few tweaks to it, which doesn't seem very eloquent:
hash = {}
if hosts.class == Array
hosts.each do |host|
ip = if host['address'].class == Array
host['address'][0]['addr']
else
host['address']['addr']
end
hash[ip] = {}
end
else
ip = if hosts['address'].class == Array
hosts['address'][0]['addr']
else
hosts['address']['addr']
end
hash[ip] = {}
end
puts hash
end
In the end, I'm just trying to find a better/eloquent way to produce a hash like below, while accounts for the possibility that an element may/may not be an Array:
{
'192.168.0.1' => {
'mac' => '00:aa:bb:cc:dd:ee',
'vendor' => 'Apple',
'ports' => {
'80' => {
'status' => 'open',
'service' => 'httpd'
}
'443' => {
'status' => 'filtered',
'service' => 'httpd'
}
}
},
192.168.0.2 => {
...
}
}
If there a ruby method that I haven't run across yet that will make this more fluid?
Not really... but you can make it always an array eg by doing something like:
hosts = [hosts] unless hosts.is_a?(Array)
or similar... then just pass that to your now-non-duplicated code. :)
The 20 lines of code in your question can be reduced to a single line using Array#wrap instead of conditionals, and using Enumerable#map instead of Enumerable#each:
Array.wrap(hosts).map { |host| [Array.wrap(host['address']).first['addr'], {}] }.to_h
Now that's magic!
Related
I have a nested hash with unsorted keys:
given = {
"lorem" => {
:AA => "foo",
:GR => "foo",
:BB => "foo"
},
"ipsum" => {
:ZZ => "foo",
:GR => "foo",
}
}
What I'm trying to accomplish is a hash with sorted keys:
goal = {
"ipsum" => {
:GR => "foo",
:ZZ => "foo"
},
"lorem" => {
:AA => "foo",
:BB => "foo",
:GR => "foo"
}
}
I have experimented with .each method and sort_by
given.each { |topic| topic[:key].sort_by { |k, v| k } }
But I'm getting an error message: TypeError: no implicit conversion of Symbol into Integer
Any help is greatly appreciated!
PS: I noticed with gem pry the output is already sorted. But in IRB it's not.
You can use group_by, and transform_values to transform the values inside each hash, also using sort_by plus to_h:
given.transform_values { |value| value.sort.to_h }.sort.to_h
# {"ipsum"=>{:GR=>"foo", :ZZ=>"foo"}, "lorem"=>{:AA=>"foo", :BB=>"foo", :GR=>"foo"}}
You're getting an error because when iterating over a hash, you have to local variables within the block scope to use, the key and its value, you're assigning only one (topic) and trying to get its key, which would be trying to access a key in:
["lorem", {:AA=>"foo", :GR=>"foo", :BB=>"foo"}]
Which isn't possible as is an array. You can update your code to:
given.each do |topic, value|
...
end
But anyway you'll need a way to store the changes or updated and sorted version of that topic values.
given_hash = {"lorem"=>{:AA=>"foo", :GR=>"foo", :BB=>"foo"}, "ipsum"=>{:ZZ=>"foo", :GR=>"foo"}}
Get keys
given_hash.keys
=> ["lorem", "ipsum"]
New sorted hash
new_hash = {}
given_hash.keys.sort.each do |sorted_key|
new_hash[sorted_key] = given[sorted_key]
end
=> {"ipsum"=>{:ZZ=>"foo", :GR=>"foo"}, "lorem"=>{:AA=>"foo", :GR=>"foo", :BB=>"foo"}}
There can be a better way to do this.
I want to change attribute inside previously defined let to make my test works. I know it is hash in hash but none of my solutions works.
I've got several similar let but which looked like this
let(:second_data) do
{
'id' => second.id.to_s,
'type' => 'account',
'attributes' =>
{
'status' => 'new',
'created_at' => second.created_at.as_json,
'time_information' => second.credit.process.date_of_interest.as_json
}
}
end
At the end these lets are merged to one
let(:json_serialized_offers) do
{
'data' => [first_data, second_data, third_data],
'included' => first_included + second_included + third_included
}
end
Now I want to change status to expired in second_data which is nested in section data in :json_serialized_offers (as you see above).
I was trying to declere it once again, in right context, by
context "when status 'closed' passed " do
let(:json_serialized_offers) do
{
'data' => second_data { status: 'expire' }
}
end
# some logic
end
But nothing changed, is it possible to do so?
Just use a another "let" to set the status attribute.
Create a :status variable with a new let and change your first let like so:
let(:status) { 'new' } # <==== new let
let(:second_data) do
{
'id' => second.id.to_s,
'type' => 'account',
'attributes' =>
{
'status' => status # <==== set status using new variable
'created_at' => second.created_at.as_json,
'time_information' => second.credit.process.date_of_interest.as_json
}
}
end
Then, in the context where you need to change it, just redefine :status.
context "when status 'closed' passed " do
let(:status) { 'expired' }
it ...
end
This will redefine :status within this context, and will also change the status attribute in :second_data.
This strategy is great for setting deeply nested attributes, and it also makes it so that you only have to redefine the things that changed.
I am creating API. Using ActiveRecords. Problem I am getting
Multiple array object of country, all I want one array containing all location
Current Output
{
"id": "180a096",
"country": [
{
"location": "US"
},
{
"location": "CH"
}
]
}
Expected Output
{
"id": "180a096",
"country": [
{"location":["US","CH"]}
]
}
Code
def as_json(options={})
super(:only => [:id ],:include => { :country => { :only => :location } })
end
Can anyone help me to restructured the object as in expected output.
If your hash is called hash you can do:
hash[:country].map {|h| h[:location]}
If you have to access attributes on associated models you can do:
countries.pluck(:location)
Unrelated to the question, but when I have to manage country info in my app I tend to use the countries gem. https://github.com/hexorx/countries
It has all kinds of useful helper methods, and it prevents you from having to maintain standardized country information.
You can simply map all the location and assign it to hash[:country]
2.4.0 :044 > hash[:country].map! { |c| c[:location] }
=> ["US", "CH"]
2.4.0 :045 > hash
=> {:id=>"180a096", :country=>["US", "CH"]}
As mentioned in my comment, you can do in one line like
actual_hash[:country].map! { |country| country[:location]}
actual_hash # => {:id=>"180a096", :country=>["US", "CH"]}
The output is clean but not as expected.
Or, a bit more lines to get the exact output:
location_array = [{location: []}]
actual_hash[:country].each { |country| location_array[0][:location] << country[:location]}
actual_hash[:country] = location_array
actual_hash # => {:id=>"180a096", :country=>[{:location=>["US", "CH"]}]}
def rearrange_json(input)
input_hash = JSON.parse(input)
output_hash = input_hash.clone
output_hash[:country] = {location: []}
input_hash[:country].map {|l| output_hash[:country][:location] << l[:location] }
output_hash.as_json
end
With this method, you can convert your json to a hash, then rearrange its content they way you want by adding the country codes as values for the [:country][:location] key of the output hash, and end up with some properly formatted json. It's not a one-liner, and probably not the most elegant way to do it, but it should work.
I've been pouring over the google adwords api docs and I can't figure out how to format the selector to retrieve CPC information. I am using the google-adwords-api gem. Below is the method I'm working on inside my Adwords api module.
def self.traffic_estimator_service keyword
if !#adwords #If not already authenticated, do it first
Adwords.authenticate()
end
traffic_estimator_service = #adwords.service(:TrafficEstimatorService, API_VERSION)
selector = {
:xsi_type => 'KeywordEstimateRequest',
:match_type => 'EXACT',
:keyword => keyword
}
data = traffic_estimator_service.get(selector)
puts '---------------------------------'
puts data.inspect
puts '---------------------------------'
end
Of course I never get to the data2.inspect line because of the api errors. ie:
AdsCommon::Errors::UnexpectedParametersError (AdsCommon::Errors::UnexpectedParametersError: [:match_type]):
I've moved things around and tried multiple things inside the selector hash. Can someone give me an example of what this selector hash should look like?
selector = {
:campaign_estimate_requests => [
{
:xsi_type => 'CampaignEstimateRequest',
:ad_group_estimate_requests => {
:xsi_type => 'AdGroupEstimateRequest',
:keyword_estimate_requests => [
{
:max_cpc => {
:xsi_type => 'Money',
:micro_amount => 1_000_000
},
:xsi_type => 'KeywordEstimateRequest',
:keyword => {
:xsi_type => 'Keyword',
:text => keyword,
:match_type => 'EXACT'
}
}
]
}
}
]
}
When supplying savon with:
hash = {
"Objects" => { //stuff here },
:attributes! => { "Objects" => {"xsi:type" => "Something"}}
}
I get:
<Objects>...</Objects>
When supplying savon with anything else i get the expected result:
hash = {
"foo" => { //stuff here },
:attributes! => { "foo" => {"xsi:type" => "Something"}}
}
I get:
<foo xsi:type="Something"></foo>
I must use the string "Objects" as the key. I am coding to a 3rd party SOAP web service. I cannot use a symbol because the first letter would become a lower cap.
thanks,
You have to change :attributes! to :#xsi:type=>"Something" within the hash where you want the attribute
Like:
"foo"=>{:#xsi:type=>'something', //stuff here}