Use a REST API
You are encouraged to solve this task according to the task description, using any language you may know.
To:
- Get a list of events
- Submit events
Using the Meetup.com API.
An API key is assumed to be supplied through an api_key.txt file.
Java
EventGetter.java
<lang java>package src;
import java.io.BufferedReader; import java.io.FileReader; import java.net.URI;
import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.utils.URIBuilder; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils;
public class EventGetter {
String city = "";
String topic = "";
public String getEvent(String path_code,String key) throws Exception{ String responseString = "";
URI request = new URIBuilder() //We build the request URI .setScheme("http") .setHost("api.meetup.com") .setPath(path_code) //List of parameters : .setParameter("topic", topic) .setParameter("city", city) //End of params .setParameter("key", key) .build();
HttpGet get = new HttpGet(request); //Assign the URI to the get request System.out.println("Get request : "+get.toString());
CloseableHttpClient client = HttpClients.createDefault(); CloseableHttpResponse response = client.execute(get); responseString = EntityUtils.toString(response.getEntity());
return responseString; }
public String getApiKey(String key_path){ String key = "";
try{ BufferedReader reader = new BufferedReader(new FileReader(key_path)); //Read the file where the API Key is key = reader.readLine().toString(); //Store key reader.close(); } catch(Exception e){System.out.println(e.toString());}
return key; //Return the key value. }
}</lang>
Main.java <lang java>/*
* In this class, You can see the diferent * ways of asking for events. * */
package src;
import java.util.Iterator;
import org.json.simple.JSONArray; import org.json.simple.JSONObject; import org.json.simple.JSONValue; import org.json.simple.parser.JSONParser;
public class Main { public static void main(String[] args) {
String key_path = "API_key/api_key.txt"; //Path to API Key (api_key.txt) String key = ""; String path_code = "/2/open_events"; //PathCode for get-events //More PathCodes : http://www.meetup.com/meetup_api/docs/ String events = "";
EventGetter eventGetter = new EventGetter(); key = eventGetter.getApiKey(key_path);
/* * 1-PARAMETER EXAMPLE : */ eventGetter.topic = "photo"; //Set the parameter "topic" to "photo"
try { events = eventGetter.getEvent(path_code, key); //Store the event response into a String } catch (Exception e) {e.printStackTrace();} DecodeJSON(events); //Print JSON-parsed events info
/* * 2-PARAMETER EXAMPLE : */ eventGetter.topic = "tech"; //Set parameters eventGetter.city = "Barcelona"; try{ events = eventGetter.getEvent(path_code, key); }catch(Exception e){e.printStackTrace();} //System.out.println(events); //Print the events list (JSON)
/*
* MULTIPLE-TOPICS EXAMPLE :
* Separate topics by commas
*/
eventGetter.topic = "tech,photo,art"; //multiple topic separated by commas
eventGetter.city = "Barcelona";
try{
events = eventGetter.getEvent(path_code, key);
}catch(Exception e){e.printStackTrace();}
}
public static void DecodeJSON(String events){
try{ JSONParser parser = new JSONParser(); JSONObject obj = (JSONObject) parser.parse(events); JSONArray results = (JSONArray) obj.get("results"); System.out.println("Results : ");
Iterator i = results.iterator(); while(i.hasNext()){ JSONObject event = (JSONObject) i.next(); System.out.println("Name : "+event.get("name"));
if(event.containsKey("venue")){ JSONObject venue = (JSONObject) event.get("venue"); System.out.println("Location (city) : "+venue.get("city")); System.out.println("Location (adress) : "+venue.get("adress_1")); }
System.out.println("Url : "+event.get("event_url"));
System.out.println("Time : "+event.get("time"));
i.next();
}
} catch(Exception e){e.printStackTrace();} }
}</lang>
Python
eventGetter.py <lang python>#http://docs.python-requests.org/en/latest/ import requests import json
city = None topic = None
def getEvent(url_path, key) :
responseString = ""
params = {'city':city, 'key':key,'topic':topic}
r = requests.get(url_path, params = params)
print(r.url)
responseString = r.text
return responseString
def getApiKey(key_path):
key = "" f = open(key_path, 'r') key = f.read() return key
def submitEvent(url_path,params):
r = requests.post(url_path, data=json.dumps(params)) print(r.text+" : Event Submitted")</lang>
main.py <lang python>import eventGetter as eg import json
def main():
url_path = "https://api.meetup.com" #Url to meetup API key_path = "api_key.txt" #Path to api_key.txt path_code = "" #var to store the url_path + the specific api path key = eg.getApiKey(key_path) #1-parameter get events example : print("1-PARAMETER EXAMPLE") path_code = url_path+"/2/open_events" eg.topic = "photo" response = eg.getEvent(path_code, key) decodeJSON(response)
#2-parameter get events example :
print("\n")
print("2-PARAMETER EXAMPLE")
path_code = url_path+"/2/open_events"
eg.topic = "photo"
eg.city = "nyc"
response = eg.getEvent(path_code, key)
decodeJSON(response)
#Get GEO Example :
print("\n")
print("Get GEO Example")
path_code = url_path+"/2/open_events"
eg.topic = "photo"
eg.city = None
exclude = None
response = eg.getEvent(path_code, key)
decodeGEO(response)
#Exclude topics Example
print("\n")
print("EXCLUDE-TOPICS EXAMPLE")
path_code = url_path+"/2/open_events"
eg.topic = "photo"
eg.city = None
exclude = "club"
response = eg.getEvent(path_code, key)
decodeJSONExcluding(response, exclude)
def decodeJSON(response):
j = json.loads(response.encode('ascii','ignore').decode()) #This is a Python Dict (JSON array)
i = 0
results = j['results']
while i<len(results):
event = results[i]
print("Event "+str(i))
print("Event name : "+event['name'])
print("Event URL : "+event['event_url'])
try :
print("City : "+str(event['venue']['city']))
except KeyError :
print("This event has no location assigned")
try :
print("Group : "+str(event['group']['name']))
except KeyError :
print("This event is not related to any group")
i+=1
def decodeJSONExcluding(response, exclude):
j = json.loads(response.encode('ascii','ignore').decode()) #This is a Python Dict (JSON array)
i = 0
results = j['results']
while i<len(results):
event = results[i]
if 'description' in event :
if exclude not in str(event['description']) :
print("Event "+str(i))
print("Event name : "+event['name'])
print("Event URL : "+event['event_url'])
try :
print("City : "+str(event['venue']['city']))
except KeyError :
print("This event has no location assigned")
try :
print("Group : "+str(event['group']['name']))
except KeyError :
print("This event is not related to any group")
else :
print("Event number "+str(i)+" is excluded by its keywords")
i+=1
def decodeGEO(response):
j = json.loads(response.encode('ascii','ignore').decode()) #This is a Python Dict (JSON array)
i = 0
results = j['results']
while i<len(results):
event = results[i]
print("Event "+str(i))
print("Event name : "+event['name'])
try :
print("Lat : "+str(event['venue']['lat']))
print("Lon : "+str(event['venue']['lon']))
except KeyError :
print("This event has no location assigned")
i+=1
main()</lang>