Verify if a topic exists based on topic name

Ask Time：2015-05-15T01:32:45 Author：techman

I'm trying to verify if a topic exists based on topic name.

Do you know if this is possible?

For example I want to verify if topic with name "test" already exist.

Below is what I'm trying but doesn't work because topicsList contains topicArns and not topicNames...

topics = sns.get_all_topics()   
topicsList = topics['ListTopicsResponse']['ListTopicsResult'['Topics']

if "test" in topicsList:
    print("true")

Author:techman，eproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/30243687/verify-if-a-topic-exists-based-on-topic-name

RustyShackleford :

This code will work if you have more than 100 topics\n\ndef get_topic(token=None):\n topics = self.sns.get_all_topics(token)\n next_token = topics['ListTopicsResponse']['ListTopicsResult']['NextToken']\n topic_list = topics['ListTopicsResponse']['ListTopicsResult']['Topics']\n for topic in topic_list:\n if \"your_topic_name\" in topic['TopicArn'].split(':')[5]:\n return topic['TopicArn']\n else:\n if next_token:\n get_topic(next_token)\n else:\n return None\n",

2015-08-14T22:31:34

panchicore :

What if you try to catch An error occurred (NotFound) when calling the GetTopicAttributes operation: Topic does not exist exception?\n\nfrom botocore.exceptions import ClientError\n\ntopic_arn = \"arn:aws:sns:us-east-1:999999999:neverFound\"\n\ntry:\n response = client.get_topic_attributes(\n TopicArn=topic_arn\n )\n print \"Exists\"\nexcept ClientError as e:\n # Validate if is this:\n # An error occurred (NotFound) when calling the GetTopicAttributes operation: Topic does not exist\n print \"Does not exists\"\n",

2017-01-31T10:31:23

Verify if a topic exists based on topic name