updated get_ram_and_disk method

- note content is dummy for now

agent.py

@@ -3,6 +3,9 @@ import urllib.request
 import logging
 import json
 import http.client
+import subprocess
+import re
+import shutil
 
 NON_UPDATABLE_KEYS = [
     'server_type',
@@ -13,7 +16,6 @@ NON_UPDATABLE_KEYS = [
     'bandwidth', 
     'was_promo',
     'active',
-    'show_public',
     'owned_since', 
     'currency', 
     'price', 
@@ -26,28 +28,153 @@ class ServerData:
     def __init__(self):
         self.hostname = os.uname().nodename
         self.public_ip = self.get_public_ip()
+        self.dmidecode_data = self.parse_dmidecode_output()
+        self.hdparm_data = self.parse_hdparm_output()
         logging.basicConfig(level=logging.INFO)
 
+    def parse_dmidecode_output(self):
+        '''
+        Example dmidecode output:
+
+        Handle 0x0069, DMI type 20, 35 bytes
+        Memory Device Mapped Address
+            Starting Address: 0x00600000000
+            Ending Address: 0x007FFFFFFFF
+            Range Size: 8 GB
+            Physical Device Handle: 0x0067
+            Memory Array Mapped Address Handle: 0x006A
+            Partition Row Position: Unknown
+            Interleave Position: 2
+            Interleaved Data Depth: 2
+
+        Handle 0x006A, DMI type 19, 31 bytes
+        Memory Array Mapped Address
+            Starting Address: 0x00000000000
+            Ending Address: 0x007FFFFFFFF
+            Range Size: 32 GB
+            Physical Array Handle: 0x005E
+            Partition Width: 4
+        '''
+        if os.path.isfile('/usr/sbin/dmidecode'):
+            try:
+                # ignore error messages produced by the command
+                output = subprocess.check_output(['sudo', '/usr/sbin/dmidecode'], stderr=subprocess.DEVNULL).decode('utf-8')
+
+                # each section is separated by two newlines
+                sections = output.split('\n\n')
+                parsed_sections = []
+                for section in sections:
+                    
+                    # each line in a section is separated by a newline
+                    lines = section.split('\n')
+
+                    # first line contains the DMI type - only need number
+                    match = re.search(r'DMI type (\d+)', lines[0])
+                    if match:
+                        dmi_type = int(match.group(1))
+                    else:   # skip if no DMI type in this section
+                        continue
+
+                    # each section is a dictionary with DMIType as key
+                    section_dict = {'DMIType': dmi_type}
+                    if len(lines) > 1:
+                        section_dict['description'] = lines[1].strip()
+
+                    for line in lines[2:]:  # skip first two lines - already processed
+
+                        # each line has tabs at the beginning and space(maybe optional) between key and value
+                        match = re.match(r'\t(.+):\s*(.*)', line)
+                        if match:
+                            key, value = match.groups()
+                            section_dict[key] = value
+                    parsed_sections.append(section_dict)
+                return parsed_sections
+            except subprocess.CalledProcessError:
+                pass
+        return []
+
+    def parse_hdparm_output(self):
+        devices = {}
+
+        # Check if hdparm exists
+        if shutil.which('hdparm') is None:
+            logging.error("hdparm not found")
+            return devices
+
+        # Get the list of devices
+        try:
+            device_list = subprocess.check_output(['lsblk', '-d', '-o', 'NAME'], stderr=subprocess.STDOUT, universal_newlines=True).split()[1:]
+        except subprocess.CalledProcessError as e:
+            logging.error("Failed to get device list: {}".format(e))
+            return devices
+
+        for device in device_list:
+            # Only get details of devices that start with 'sd': sda, sdb, etc.
+            if not device.startswith('sd'):
+                continue
+
+            device = '/dev/' + device
+            try:
+                # Get the output
+                output = subprocess.check_output(['hdparm', '-I', device], stderr=subprocess.STDOUT, universal_newlines=True)
+            except subprocess.CalledProcessError as e:
+                logging.error("Failed to get hdparm output for {}: {}".format(device, e))
+                continue
+
+            # Parse the output
+            details = {}
+            details['model_number'] = re.search(r'Model Number:\s*(.*)', output).group(1)
+            details['serial_number'] = re.search(r'Serial Number:\s*(.*)', output).group(1)
+            details['firmware_revision'] = re.search(r'Firmware Revision:\s*(.*)', output).group(1)
+            details['transport'] = re.search(r'Transport:\s*(.*)', output).group(1)
+            details['checksum'] = re.search(r'Checksum:\s*(.*)', output).group(1)
+            details['buffer_size'] = re.search(r'cache/buffer size\s*=\s*(.*)', output).group(1)
+            details['form_factor'] = re.search(r'Form Factor:\s*(.*)', output).group(1)
+
+            devices[device] = details
+
+        return devices
+
     def get_ram_and_disk(self):
+        # RAM information
         with open('/proc/meminfo', 'r') as f:
             meminfo = f.read()
         ram = int([x for x in meminfo.split('\n') if 'MemTotal' in x][0].split()[1]) // 1024
-        with open('/proc/diskstats', 'r') as f:
-            diskstats = f.read()
-        disk = sum(int(x.split()[9]) for x in diskstats.split('\n') if x) * 512 // 10**9
-        logging.info(f"RAM: {ram}MB, Disk: {disk}GB")
+       # Disk space information
+        disk = 0
+        for device in os.listdir('/sys/block'):
+            device_path = '/sys/block/{}/device'.format(device)
+            size_path = '/sys/block/{}/size'.format(device)
+            if not os.path.islink(device_path):
+                continue
+            try:
+                with open(size_path, 'r') as f:
+                    size = int(f.read().strip())
+                    disk += size
+            except Exception:
+                pass
+
+        disk = disk * 512 // (1024**3)  # convert to GB
+        logging.info("RAM: {}MB, Disk: {}GB".format(ram, disk))
         return ram, disk
 
     def get_cpu_count(self):
-        with open('/proc/cpuinfo', 'r') as f:
-            cpuinfo = f.read()
-        cpu_count = cpuinfo.count('processor')
-        logging.info(f"CPU Count: {cpu_count}")
+        cpu_count = 0
+        for section in self.dmidecode_data:
+            if section['DMIType'] == 4:  # 4 corresponds to processor
+                core_count = int(section.get('Core Count', '0'))
+                thread_count = int(section.get('Thread Count', '0'))
+                cpu_count = core_count * thread_count
+        if cpu_count == 0:
+            with open('/proc/cpuinfo', 'r') as f:
+                cpuinfo = f.read()
+            cpu_count = cpuinfo.count('processor')
+        logging.info("CPU Count: {}".format(cpu_count))
         return cpu_count
 
     def get_bandwidth(self):
         bandwidth = 2000
-        logging.info(f"Bandwidth: {bandwidth}")
+        logging.info("Bandwidth: {}".format(bandwidth))
         return bandwidth
 
     def get_public_ip(self):
@@ -55,12 +182,12 @@ class ServerData:
             response = urllib.request.urlopen('https://api.ipify.org')
             return response.read().decode()
         except Exception as e:
-            logging.error(f"Failed to get public IP: {e}")
+            logging.error("Failed to get public IP: {}".format(e))
             return '127.0.0.1'
 
     def get_os(self):
         os_id = 27
-        logging.info(f"OS ID: {os_id}")
+        logging.info("OS ID: {}".format(os_id))
         return os_id
 
     def create_post_data(self):
@@ -93,6 +220,49 @@ class ServerData:
         logging.info("Post data created")
         return post_data
 
+    def create_note_data(self):
+        chassis_info = None
+        for section in self.dmidecode_data:
+            if section['DMIType'] == 1:
+                chassis_info = section
+                break
+        if chassis_info:
+            chassis_model = chassis_info.get('Product Name', 'Unknown')
+            chassis_serial = chassis_info.get('Serial Number', 'Unknown')
+        else:
+            chassis_model = chassis_serial = 'Unknown'
+
+        processor_info = [section for section in self.dmidecode_data if section['DMIType'] == 4]
+        processor_model = processor_info[0].get('Version', 'Unknown') if processor_info else 'Unknown'
+        processor_count = len(processor_info)
+
+        ram_info = [section for section in self.dmidecode_data if section['DMIType'] == 17]
+        ram_details = []
+        for ram in ram_info:
+            size = ram.get('Size', 'Unknown')
+            speed = ram.get('Speed', 'Unknown')
+            configured_speed = ram.get('Configured Memory Speed', 'Unknown')
+            total_width = int(ram.get('Total Width', "0").split()[0])
+            data_width = int(ram.get('Data Width', "0").split()[0])
+            ecc = 'Yes' if total_width > data_width else 'No'
+            serial_number = ram.get('Serial Number', 'Unknown')
+            ram_type = ram.get('Type', 'Unknown')
+            ram_details.append("Size: {}, Speed: {} @ {}, ECC: {}, Serial Number: {}, Type: {}".format(size, speed, configured_speed, ecc, serial_number, ram_type))
+        
+        # SATA Storage media
+        sata_details = []
+        for device, details in self.hdparm_data.items():
+            sata_details.append("Device: {}, Model: {}, Serial: {}, Checksum: {}, Buffer Size: {}, Form Factor: {}".format(
+                device, details['model_number'], details['serial_number'], details['checksum'], details['buffer_size'], details['form_factor']))
+
+        note = "Chassis Model: {} | Serial Number: {} ||| Processor Model: {} | Count: {} ||| RAM Details: {} ||| SATA Details {}".format(
+        chassis_model, chassis_serial, processor_model, processor_count, ' | '.join(ram_details), ' | '.join(sata_details))
+
+        note_data = {
+            'note': note,
+        }
+        return note_data
+
 
 class ServerManager:
     def __init__(self, host, api_key):
@@ -116,12 +286,23 @@ class ServerManager:
                 else:
                     return response.read().decode()
         except urllib.error.HTTPError as e:
-            logging.error(f"Request failed with {e}")
+            logging.error("Request failed with {}".format(e))
             raise
 
     def get_existing_servers(self):
         return self.send_request('GET', '/api/servers')
 
+    def get_note(self, service_id):
+        return self.send_request('GET', '/api/notes/' + str(service_id))
+
+    def create_note(self, post_data):
+        logging.info("Creating note...")
+        return self.send_request('POST', '/api/notes', post_data)
+
+    def update_note(self, post_data, service_id):
+        logging.info("Updating note with id {}...".format(service_id))
+        return self.send_request('PUT', '/api/notes/' + str(service_id), post_data)
+
     def create_server(self, post_data):
         logging.info("Creating server...")
         return self.send_request('POST', '/api/servers', post_data)
@@ -130,7 +311,7 @@ class ServerManager:
         # remove following keys from post_data
         for key in NON_UPDATABLE_KEYS:
             post_data.pop(key, None)
-        logging.info(f"Updating server with id {server_id}...")
+        logging.info("Updating server with id {}...".format(server_id))
         return self.send_request('PUT', '/api/servers/' + str(server_id), post_data)
 
     def existing_server_id(self, post_data):
@@ -140,6 +321,36 @@ class ServerManager:
                 return server['id']
         return None
 
+    def upsert_server(self, post_data):
+        server_id = self.existing_server_id(post_data)
+
+        if server_id:
+            logging.info('Server already exists with id: {}, Updating...'.format(server_id))
+            response = self.update_server(post_data, server_id)
+        else:
+            logging.info('Server does not exist, Creating...')
+            response = self.create_server(post_data)
+
+        # Extract the server_id from the response
+        server_id = json.loads(response).get('server_id', None)
+        if server_id is None:
+            logging.error('Failed to get server_id from response: {}'.format(response))
+            raise ValueError('Failed to get server_id from response')
+
+        return server_id
+    
+    def upsert_note(self, note_data, server_id):
+        note_data['service_id'] = server_id
+        try:
+            note = self.get_note(server_id)
+        except urllib.error.HTTPError:
+            note = None
+
+        if note:
+            return self.update_note(note_data, server_id)
+        else:
+            return self.create_note(note_data)
+
 def validate_env_vars():
     api_key = os.getenv('AGENT_API')
     host = os.getenv('HOST')
@@ -159,16 +370,11 @@ def main():
 
     server_manager = ServerManager(host, api_key)
 
-    # Check if the server already exists
-    server_id = server_manager.existing_server_id(post_data)
+    server_id = server_manager.upsert_server(post_data)
+    logging.info('Server id: {}'.format(server_id))
 
-    # If the server exists, update it
-    if server_id:
-        logging.info('Server already exists with id: {}, Updating...'.format(server_id))
-        logging.info(server_manager.update_server(post_data, server_id))
-    else:
-        logging.info('Server does not exist, Creating...')
-        logging.info(server_manager.create_server(post_data))
+    note_data = server_data.create_note_data()
+    server_manager.upsert_note(note_data, server_id)
 
 if __name__ == '__main__':
-    main()
+    main()