Administrative Operations

class SolrCoreAdmin:
    def __init__(self, url, *args, **kwargs):
        """
        Initialize a Solr Core Admin client.

        Parameters:
        - url (str): Full URL to Solr admin cores endpoint (e.g., 'http://localhost:8983/solr/admin/cores')
        - *args, **kwargs: Additional arguments passed to parent class
        """

import pysolr

# Create admin client
admin = pysolr.SolrCoreAdmin('http://localhost:8983/solr/admin/cores')

def status(self, core=None):
    """
    Get core status information.

    Parameters:
    - core (str, optional): Specific core name to get status for. If None, returns status for all cores

    Returns:
    str: XML response containing core status information

    Raises:
    SolrError: If status request fails
    """

# Get status for all cores
all_status = admin.status()
print("All cores status:", all_status)

# Get status for specific core
core_status = admin.status(core='my_core')
print("Core status:", core_status)

def create(self, name, instance_dir=None, config="solrconfig.xml", schema="schema.xml"):
    """
    Create a new Solr core.

    Parameters:
    - name (str): Name for the new core
    - instance_dir (str, optional): Instance directory path. Defaults to core name if not specified
    - config (str): Configuration file name (default: "solrconfig.xml")
    - schema (str): Schema file name (default: "schema.xml")

    Returns:
    str: XML response from core creation

    Raises:
    SolrError: If core creation fails
    """

# Create core with default settings
response = admin.create('new_core')
print("Core created:", response)

# Create core with custom configuration
response = admin.create(
    name='custom_core',
    instance_dir='/path/to/core/instance', 
    config='custom-solrconfig.xml',
    schema='custom-schema.xml'
)
print("Custom core created:", response)

def reload(self, core):
    """
    Reload a Solr core to apply configuration changes.

    Parameters:
    - core (str): Name of the core to reload

    Returns:
    str: XML response from core reload

    Raises:
    SolrError: If core reload fails
    """

# Reload a core after configuration changes
response = admin.reload('my_core')
print("Core reloaded:", response)

def rename(self, core, other):
    """
    Rename a Solr core.

    Parameters:
    - core (str): Current name of the core
    - other (str): New name for the core

    Returns:
    str: XML response from core rename

    Raises:
    SolrError: If core rename fails
    """

# Rename a core
response = admin.rename('old_core_name', 'new_core_name')
print("Core renamed:", response)

def swap(self, core, other):
    """
    Swap two Solr cores (exchange their names).

    Parameters:
    - core (str): Name of the first core
    - other (str): Name of the second core

    Returns:
    str: XML response from core swap

    Raises:
    SolrError: If core swap fails
    """

# Swap two cores (useful for blue-green deployments)
response = admin.swap('core_blue', 'core_green')
print("Cores swapped:", response)

def unload(self, core):
    """
    Unload a Solr core from memory.

    Parameters:
    - core (str): Name of the core to unload

    Returns:
    str: XML response from core unload

    Raises:
    SolrError: If core unload fails
    """

# Unload a core from memory
response = admin.unload('unused_core')
print("Core unloaded:", response)

def load(self, core):
    """
    Load a Solr core (not implemented).

    Parameters:
    - core (str): Name of the core to load

    Raises:
    NotImplementedError: Always raised as this operation is not supported in Solr 1.4 and below
    """

import pysolr

# Initialize admin client
admin = pysolr.SolrCoreAdmin('http://localhost:8983/solr/admin/cores')

try:
    # Check current status
    print("Checking current cores...")
    status = admin.status()
    print("Current status:", status)
    
    # Create a new core
    print("Creating new core...")
    create_response = admin.create(
        name='test_core',
        config='solrconfig.xml',
        schema='managed-schema'
    )
    print("Core created successfully")
    
    # Verify core was created
    core_status = admin.status(core='test_core')
    print("New core status:", core_status)
    
    # Reload core (e.g., after configuration changes)
    print("Reloading core...")
    reload_response = admin.reload('test_core')
    print("Core reloaded successfully")
    
    # Create another core for swapping demo
    admin.create('test_core_2')
    
    # Swap cores
    print("Swapping cores...")
    swap_response = admin.swap('test_core', 'test_core_2')
    print("Cores swapped successfully")
    
    # Unload cores when done
    print("Cleaning up...")
    admin.unload('test_core')
    admin.unload('test_core_2')
    print("Cores unloaded successfully")
    
except pysolr.SolrError as e:
    print(f"Admin operation failed: {e}")

import pysolr

admin = pysolr.SolrCoreAdmin('http://localhost:8983/solr/admin/cores')

try:
    # Attempt to create a core
    admin.create('my_core')
except pysolr.SolrError as e:
    if 'already exists' in str(e).lower():
        print("Core already exists, skipping creation")
    else:
        print(f"Failed to create core: {e}")
        raise

try:
    # Attempt to reload a core
    admin.reload('nonexistent_core')
except pysolr.SolrError as e:
    print(f"Core reload failed: {e}")
    # Handle missing core or configuration errors

try:
    # Attempt unsupported operation
    admin.load('some_core')
except NotImplementedError as e:
    print(f"Operation not supported: {e}")