Functionality to run things on the remote server

planutils/__init__.py

@@ -85,6 +85,10 @@ def main():
     parser_run.add_argument('package', help='package name')
     parser_run.add_argument('options', help='commandline options for the package', nargs="*")
 
+    parser_run = subparsers.add_parser('remote', help='run package remotely')
+    parser_run.add_argument('package', help='package name')
+    parser_run.add_argument('options', help='commandline options for the package', nargs="*")
+
     parser_checkinstalled = subparsers.add_parser('check-installed', help='check if a package is installed')
     parser_checkinstalled.add_argument('package', help='package name')
 
@@ -116,6 +120,10 @@ def main():
         from planutils.package_installation import run
         run(args.package, args.options)
 
+    elif 'remote' == args.command:
+        from planutils.package_installation import remote
+        remote(args.package, args.options)
+
     elif 'list' == args.command:
         from planutils.package_installation import package_list
         package_list()

planutils/package_installation.py

@@ -1,10 +1,9 @@
 
-import json, os, glob, subprocess, sys
+import json, os, glob, subprocess, sys, requests, time
 from collections import defaultdict
 from pathlib import Path
 
 from planutils import settings
-from planutils import manifest_converter
 
 PACKAGES = {}
 
@@ -193,3 +192,86 @@ def run(target, options):
     if not PACKAGES[target]["runnable"]:
         sys.exit(f"Package {target} is not executable")
     subprocess.run([Path(settings.PLANUTILS_PREFIX) / "packages" / target / "run"] + options)
+
+
+def remote(target, options):
+
+    # 1. check if the target is deployed
+
+    package_url = settings.PAAS_SERVER + "/package"
+    r = requests.get(package_url)
+    remote_packages = r.json()
+
+    remote_package = None
+    for p in remote_packages:
+        if p['package_name'] == target:
+            remote_package = p
+            break
+
+    if (remote_package is None) or ('solve' not in remote_package['endpoint']['services']):
+        sys.exit(f"Package {target} is not remotely deployed")
+
+
+    # 2. unpack the options and target to the right json
+
+    json_options = {}
+    remote_call = remote_package['endpoint']['services']['solve']['call']
+    call_parts = remote_call.split(' ')
+
+    args = {arg['name']: arg for arg in remote_package['endpoint']['services']['solve']['args']}
+
+    if len(options) != len(call_parts)-1:
+        sys.exit(f"Call string does not match the remote call: {remote_package['endpoint']['services']['solve']['call']}")
+
+    call_map = {}
+    for i, step in enumerate(call_parts[1:]):
+        if '{' == step[0] and '}' == step[-1]:
+            option = step[1:-1]
+            call_map[option] = options[i]
+            if option not in args:
+                sys.exit(f"Option {option} from call string is not defined in the remote call: {remote_call}")
+            if args[option]['type'] == 'file':
+                with open(options[i], 'r') as f:
+                    json_options[option] = f.read()
+            else:
+                json_options[option] = options[i]
+
+    rcall = remote_call
+    for k, v in call_map.items():
+        rcall = rcall.replace('{' + k + '}', v)
+    print("\nMaking remote call: %s" % rcall)
+
+
+    # 3. run the remote command
+
+    solve_url = '/'.join([settings.PAAS_SERVER, 'package', target, 'solve'])
+    r = requests.post(solve_url, json=json_options)
+    if r.status_code != 200:
+        sys.exit(f"Error running remote call: {r.text}")
+
+    result_url = f"{settings.PAAS_SERVER}/{r.json()['result']}"
+
+    # call every 0.5s until the result is ready
+    result = None
+    for _ in range(settings.PAAS_SERVER_LIMIT):
+        r = requests.get(result_url)
+        if (r.status_code == 200) and ('status' in r.json()) and (r.json()['status'] == 'ok'):
+            result = r.json()['result']
+            break
+        time.sleep(0.5)
+
+    if result is None:
+        sys.exit(f"Error running remote call: {r.text}")
+
+
+    # 4. unpack the results back to the client, including any new files
+
+    result = r.json()['result']
+    for fn in result['output']:
+        with open(fn, 'w') as f:
+            f.write(result['output'][fn])
+
+    print("\n\t{stdout}\n")
+    print(result['stdout'])
+    print("\n\t{stderr}\n")
+    print(result['stderr'])

planutils/settings.py

@@ -8,6 +8,9 @@
 
 SETTINGS_FILE = os.path.join(PLANUTILS_PREFIX, 'settings.json')
 
+PAAS_SERVER = 'http://45.113.232.43:5001'
+PAAS_SERVER_LIMIT = 100
+
 def load():
     with open(SETTINGS_FILE, 'r') as f:
         settings = json.loads(f.read())