DescribeInstanceTypeOfferings - script that hardcodes all offerings

scripts/ec2_get_instance_type_offerings.py

@@ -0,0 +1,63 @@
+"""
+Get InstanceTypeOfferings from AWS
+Stores result in moto/ec2/resources/instance_type_offerings/{location_type}/{region}.json
+Where {location_type} is one of region/availability-zone/availability-zone-id
+
+Note that you will get the following error if a region is not available to you:
+  An error occurred (AuthFailure) when calling the DescribeInstanceTypeOfferings operation:
+  AWS was not able to validate the provided access credentials
+"""
+import boto3
+import json
+import os
+import subprocess
+from boto3 import Session
+from time import sleep
+
+PATH = "moto/ec2/resources/instance_type_offerings"
+TYPES = ["region", "availability-zone", "availability-zone-id"]
+
+
+def main():
+    print("Getting InstanceTypeOfferings from all regions")
+    regions = []
+    regions.extend(Session().get_available_regions("ec2"))
+    regions.extend(Session().get_available_regions("ec2", partition_name="aws-us-gov"))
+    regions.extend(Session().get_available_regions("ec2", partition_name="aws-cn"))
+    print("Found " + str(len(regions)) + " regions")
+
+    root_dir = (
+        subprocess.check_output(["git", "rev-parse", "--show-toplevel"])
+        .decode()
+        .strip()
+    )
+    for region in regions:
+        for location_type in TYPES:
+            ec2 = boto3.client("ec2", region_name=region)
+            dest = os.path.join(root_dir, "{0}/{1}/{2}.json".format(PATH, location_type, region))
+            try:
+                instances = []
+                offerings = ec2.describe_instance_type_offerings(
+                    LocationType=location_type
+                )
+                instances.extend(offerings["InstanceTypeOfferings"])
+                next_token = offerings.get("NextToken", "")
+                while next_token:
+                    offerings = ec2.describe_instance_type_offerings(
+                        LocationType=location_type,
+                        NextToken=next_token
+                    )
+                    instances.extend(offerings["InstanceTypeOfferings"])
+                    next_token = offerings.get("NextToken", None)
+                print("Writing data to {0}".format(dest))
+                with open(dest, "w+") as open_file:
+                    json.dump(instances, open_file, sort_keys=True)
+            except Exception as e:
+                print("Unable to write data to {0}".format(dest))
+                print(e)
+        # We don't want it to look like we're DDOS'ing AWS
+        sleep(1)
+
+
+if __name__ == "__main__":
+    main()