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How to use delete_function method in localstack

Best Python code snippet using localstack_python

sync_client.py

Source:sync_client.py

1import distutils2import distutils.spawn3import logging4import subprocess5import tempfile6import types7from shlex import quote8from ray.tune.error import TuneError9logger = logging.getLogger(__name__)10S3_PREFIX = "s3://"11GS_PREFIX = "gs://"12HDFS_PREFIX = "hdfs://"13ALLOWED_REMOTE_PREFIXES = (S3_PREFIX, GS_PREFIX, HDFS_PREFIX)14noop_template = ": {target}"  # noop in bash15def noop(*args):16    return17def get_sync_client(sync_function, delete_function=None):18    """Returns a sync client.19    Args:20        sync_function (Optional[str|function]): Sync function.21        delete_function (Optional[str|function]): Delete function. Must be22            the same type as sync_function if it is provided.23    Raises:24        ValueError if sync_function or delete_function are malformed.25    """26    if sync_function is None:27        return None28    if delete_function and type(sync_function) != type(delete_function):29        raise ValueError("Sync and delete functions must be of same type.")30    if isinstance(sync_function, types.FunctionType):31        delete_function = delete_function or noop32        client_cls = FunctionBasedClient33    elif isinstance(sync_function, str):34        delete_function = delete_function or noop_template35        client_cls = CommandBasedClient36    else:37        raise ValueError("Sync function {} must be string or function".format(38            sync_function))39    return client_cls(sync_function, sync_function, delete_function)40def get_cloud_sync_client(remote_path):41    """Returns a CommandBasedClient that can sync to/from remote storage.42    Args:43        remote_path (str): Path to remote storage (S3, GS or HDFS).44    Raises:45        ValueError if malformed remote_dir.46    """47    if remote_path.startswith(S3_PREFIX):48        if not distutils.spawn.find_executable("aws"):49            raise ValueError(50                "Upload uri starting with '{}' requires awscli tool"51                " to be installed".format(S3_PREFIX))52        sync_up_template = "aws s3 sync {source} {target} --only-show-errors"53        sync_down_template = sync_up_template54        delete_template = "aws s3 rm {target} --recursive --only-show-errors"55    elif remote_path.startswith(GS_PREFIX):56        if not distutils.spawn.find_executable("gsutil"):57            raise ValueError(58                "Upload uri starting with '{}' requires gsutil tool"59                " to be installed".format(GS_PREFIX))60        sync_up_template = "gsutil rsync -r {source} {target}"61        sync_down_template = sync_up_template62        delete_template = "gsutil rm -r {target}"63    elif remote_path.startswith(HDFS_PREFIX):64        if not distutils.spawn.find_executable("hdfs"):65            raise ValueError("Upload uri starting with '{}' requires hdfs tool"66                             " to be installed".format(HDFS_PREFIX))67        sync_up_template = "hdfs dfs -put -f {source} {target}"68        sync_down_template = "hdfs dfs -get -f {target} {source}"69        delete_template = "hdfs dfs -rm -r {target}"70    else:71        raise ValueError("Upload uri must start with one of: {}"72                         "".format(ALLOWED_REMOTE_PREFIXES))73    return CommandBasedClient(sync_up_template, sync_down_template,74                              delete_template)75class SyncClient:76    """Client interface for interacting with remote storage options."""77    def sync_up(self, source, target):78        """Syncs up from source to target.79        Args:80            source (str): Source path.81            target (str): Target path.82        Returns:83            True if sync initiation successful, False otherwise.84        """85        raise NotImplementedError86    def sync_down(self, source, target):87        """Syncs down from source to target.88        Args:89            source (str): Source path.90            target (str): Target path.91        Returns:92            True if sync initiation successful, False otherwise.93        """94        raise NotImplementedError95    def delete(self, target):96        """Deletes target.97        Args:98            target (str): Target path.99        Returns:100            True if delete initiation successful, False otherwise.101        """102        raise NotImplementedError103    def wait(self):104        """Waits for current sync to complete, if asynchronously started."""105        pass106    def reset(self):107        """Resets state."""108        pass109class FunctionBasedClient(SyncClient):110    def __init__(self, sync_up_func, sync_down_func, delete_func=None):111        self.sync_up_func = sync_up_func112        self.sync_down_func = sync_down_func113        self.delete_func = delete_func or noop114    def sync_up(self, source, target):115        self.sync_up_func(source, target)116        return True117    def sync_down(self, source, target):118        self.sync_down_func(source, target)119        return True120    def delete(self, target):121        self.delete_func(target)122        return True123NOOP = FunctionBasedClient(noop, noop)124class CommandBasedClient(SyncClient):125    def __init__(self,126                 sync_up_template,127                 sync_down_template,128                 delete_template=noop_template):129        """Syncs between two directories with the given command.130        Arguments:131            sync_up_template (str): A runnable string template; needs to132                include replacement fields '{source}' and '{target}'.133            sync_down_template (str): A runnable string template; needs to134                include replacement fields '{source}' and '{target}'.135            delete_template (Optional[str]): A runnable string template; needs136                to include replacement field '{target}'. Noop by default.137        """138        self._validate_sync_string(sync_up_template)139        self._validate_sync_string(sync_down_template)140        self.sync_up_template = sync_up_template141        self.sync_down_template = sync_down_template142        self.delete_template = delete_template143        self.logfile = None144        self.cmd_process = None145    def set_logdir(self, logdir):146        """Sets the directory to log sync execution output in.147        Args:148            logdir (str): Log directory.149        """150        self.logfile = tempfile.NamedTemporaryFile(151            prefix="log_sync_out", dir=logdir, suffix=".log", delete=False)152    def sync_up(self, source, target):153        return self._execute(self.sync_up_template, source, target)154    def sync_down(self, source, target):155        return self._execute(self.sync_down_template, source, target)156    def delete(self, target):157        if self.is_running:158            logger.warning("Last sync client cmd still in progress, skipping.")159            return False160        final_cmd = self.delete_template.format(target=quote(target))161        logger.debug("Running delete: {}".format(final_cmd))162        self.cmd_process = subprocess.Popen(163            final_cmd, shell=True, stderr=subprocess.PIPE, stdout=self.logfile)164        return True165    def wait(self):166        if self.cmd_process:167            _, error_msg = self.cmd_process.communicate()168            error_msg = error_msg.decode("ascii")169            code = self.cmd_process.returncode170            args = self.cmd_process.args171            self.cmd_process = None172            if code != 0:173                raise TuneError("Sync error. Ran command: {}\n"174                                "Error message ({}): {}".format(175                                    args, code, error_msg))176    def reset(self):177        if self.is_running:178            logger.warning("Sync process still running but resetting anyways.")179        self.cmd_process = None180    @property181    def is_running(self):182        """Returns whether a sync or delete process is running."""183        if self.cmd_process:184            self.cmd_process.poll()185            return self.cmd_process.returncode is None186        return False187    def _execute(self, sync_template, source, target):188        """Executes sync_template on source and target."""189        if self.is_running:190            logger.warning("Last sync client cmd still in progress, skipping.")191            return False192        final_cmd = sync_template.format(193            source=quote(source), target=quote(target))194        logger.debug("Running sync: {}".format(final_cmd))195        self.cmd_process = subprocess.Popen(196            final_cmd, shell=True, stderr=subprocess.PIPE, stdout=self.logfile)197        return True198    @staticmethod199    def _validate_sync_string(sync_string):200        if not isinstance(sync_string, str):201            raise ValueError("{} is not a string.".format(sync_string))202        if "{source}" not in sync_string:203            raise ValueError("Sync template missing '{source}'.")204        if "{target}" not in sync_string:...

resources.py

Source:resources.py

...22    def delete(self):23        """24        @summary: Deletes the resource25        """26        self.delete_function(self.resource_id)27class ResourcePool(object):28    """29    @summary: Pool of resources to be tracked for deletion.30    """31    def __init__(self):32        self.resources = []33    def add(self, resource_id, delete_function):34        """35        @summary: Adds a resource to the resource pool36        @param resource_id: Unique identifier of resource37        @type resource_id: string38        @param delete_function: The function to be called to delete a server39        @type delete_function: Function Pointer40        """...

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