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7 changes: 7 additions & 0 deletions Dockerfile
Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
FROM python:3.8.17-slim

LABEL org.opencontainers.image.source=https://github.com/NationalSecurityAgency/accumulo-python3

COPY . /app

RUN pip install /app
40 changes: 26 additions & 14 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,12 @@ Library features include:
import accumulo
from accumulo import Mutation, RangePrefix, ScanOptions

connector = accumulo.AccumuloProxyConnectionContext().create_connector('user', 'secret')
# The accumulo proxy now authenticates with accumulo by itself.
# This client then authenticates with the proxy using a configured 'sharedSecret',
# shared between the client and proxy
sharedSecret = "sharedSecret"

connector = accumulo.AccumuloProxyConnectionContext().create_connector(sharedSecret)

# Create the table 'tmp' if it does not already exist.
if not connector.table_exists('tmp'):
Expand All @@ -32,7 +37,7 @@ with connector.create_scanner('tmp', ScanOptions(range=RangePrefix('User.1'))) a
print(r.row, r.cf, r.value_bytes)
```

__Note__. This library is a work in progress. It has been tested with Accumulo 1.9 and Python 3.8.
__Note__. This library is a work in progress. It has been tested with Accumulo 2.1.1 and Python 3.8.

## Installation

Expand All @@ -53,6 +58,14 @@ development.
pip install -e .
```

### Docker Image

Alternatively, build a docker image

```
docker build . -t accumulo-proxy-client
```

## Background

Native integration with Accumulo is powered by [Apache Thrift](https://thrift.apache.org/). This library embeds
Expand Down Expand Up @@ -98,8 +111,7 @@ higher-level functionality in this library. Use the `client` property of an `Acc
access these bindings.

```python
login = proxy_connection.client.login('user', {'password': 'secret'})
proxy_connection.client.changeUserAuthorizations(login, 'user', [b'ADMIN'])
proxy_connection.client.changeUserAuthorizations('sharedSecret', 'user', [b'ADMIN'])
```

### Creating a blocking connector
Expand All @@ -111,9 +123,9 @@ Use the `AccumuloProxyConnectionContext` class to create a blocking connector in

```python
from accumulo import AccumuloProxyConnectionContext

sharedSecret = "sharedSecret"
context = AccumuloProxyConnectionContext(proxy_connection)
connector = context.create_connector('user', 'secret')
connector = context.create_connector(sharedSecret)
```

### Perform some basic table operations
Expand Down Expand Up @@ -243,23 +255,23 @@ with connector.create_scanner(
'tmp',
ScanOptions(
# Binary and non-binary arguments are accepted
range=Range(start_key=Key('sk', b'cf'))
range=Range(start_key=Key('aStartKey', b'cf'))
)
) as scanner:
pass

with connector.create_scanner(
'tmp',
ScanOptions(
range=Range(end_key=Key('ek', b'cf'), is_end_key_inclusive=True)
range=Range(end_key=Key('endKey', b'cf'), is_end_key_inclusive=True)
)
) as scanner:
pass

with connector.create_scanner(
'tmp',
ScanOptions(
range=Range(start_key=Key('sk', b'cf'), end_key=Key('ek', 'cf', 'cq'))
range=Range(start_key=Key('aStartKey', b'cf'), end_key=Key('endKey', 'cf', 'cq'))
)
) as scanner:
pass
Expand All @@ -280,15 +292,15 @@ with connector.create_batch_scanner(

### Use an iterator

`ScanOptions` and `BatchScanOptions` both support an `iterator_settings` keyword argument.
`ScanOptions` and `BatchScanOptions` both support an `iterators` keyword argument.

```python
from accumulo import IteratorSetting

with connector.create_scanner(
'tmp',
ScanOptions(
iterator_settings=[
iterators=[
IteratorSetting(priority=30, name='iter', iterator_class='my.iterator', properties={})
]
)
Expand All @@ -311,7 +323,7 @@ connector, we will use the `AccumuloProxyConnectionPoolContextAsync` class.
```python
from accumulo import AccumuloProxyConnectionPoolContextAsync

async_conn = await AccumuloProxyConnectionPoolContextAsync().create_connector('user', 'secret')
async_conn = await AccumuloProxyConnectionPoolContextAsync().create_connector('sharedSecret')
```

Unlike the blocking connector, the non-blocking connector uses a pool of proxy connection objects, and uses a
Expand All @@ -335,7 +347,7 @@ executor = AsyncAccumuloConnectorPoolExecutor(
)
# A default executor is created if one is not provided.
context = AccumuloProxyConnectionPoolContextAsync(executor)
async_conn = await AccumuloProxyConnectionPoolContextAsync().create_connector('user', 'secret')
async_conn = await AccumuloProxyConnectionPoolContextAsync().create_connector('sharedSecret')
```

#### Using writers
Expand Down Expand Up @@ -370,5 +382,5 @@ the binding function from a proxy client instance.

```python
# executor.run(gettern_fn, *args)
await executor.run(lambda c: c.tableExists, login, 'tmp')
await executor.run(lambda c: c.tableExists, 'sharedSecret', 'tmp')
```
6 changes: 3 additions & 3 deletions accumulo/core/client.py
Original file line number Diff line number Diff line change
Expand Up @@ -5,14 +5,14 @@

class AccumuloContextBase:

def create_connector(self, user: str, auth: str):
def create_connector(self, shared_secret: bytes):
raise NotImplementedError


class AccumuloConnectorBase:

def __init__(self, login: bytes):
self.login = login
def __init__(self, shared_secret: bytes):
self.shared_secret = shared_secret

def create_scanner(self, table: str, options: ScanOptions):
raise NotImplementedError
Expand Down
26 changes: 10 additions & 16 deletions accumulo/core/client_async.py
Original file line number Diff line number Diff line change
Expand Up @@ -133,50 +133,50 @@ def context(self):

class AsyncAccumuloConnector(AccumuloConnectorBase):

def __init__(self, proxy_connection_pool_executor: AsyncAccumuloConnectorPoolExecutor, login: bytes):
super().__init__(login)
def __init__(self, proxy_connection_pool_executor: AsyncAccumuloConnectorPoolExecutor, shared_secret: bytes):
super().__init__(shared_secret)
self.proxy_connection_pool_executor = proxy_connection_pool_executor

async def create_scanner(self, table: str, opts: Optional[ScanOptions] = None):
if opts is None:
opts = ScanOptions()
opts = TTypeFactory.scan_options(opts)
resource_id = await self.proxy_connection_pool_executor.run(AccumuloProxyClientFunctionGetters.create_scanner,
self.login, table, opts)
self.shared_secret, table, opts)
return AsyncAccumuloScanner(self.proxy_connection_pool_executor, resource_id)

async def create_batch_scanner(self, table: str, opts: Optional[BatchScanOptions] = None):
if opts is None:
opts = BatchScanOptions()
opts = TTypeFactory.batch_scan_options(opts)
resource_id = await self.proxy_connection_pool_executor.run(
AccumuloProxyClientFunctionGetters.create_batch_scanner, self.login, table, opts)
AccumuloProxyClientFunctionGetters.create_batch_scanner, self.shared_secret, table, opts)
return AsyncAccumuloScanner(self.proxy_connection_pool_executor, resource_id)

async def create_writer(self, table: str, opts: Optional[WriterOptions] = None):
if opts is None:
opts = WriterOptions()
opts = TTypeFactory.writer_options(opts)
resource_id = await self.proxy_connection_pool_executor.run(AccumuloProxyClientFunctionGetters.create_writer,
self.login, table, opts)
self.shared_secret, table, opts)
return AsyncAccumuloWriter(self.proxy_connection_pool_executor, resource_id)

async def change_user_authorizations(self, user: str, auths: Types.T_AUTHORIZATION_SET):
await self.proxy_connection_pool_executor.run(AccumuloProxyClientFunctionGetters.change_user_authorizations,
self.login, user, auths)
self.shared_secret, user, auths)

async def get_user_authorizations(self, user: str) -> Types.T_AUTHORIZATION_SET:
auths = await self.proxy_connection_pool_executor.run(
AccumuloProxyClientFunctionGetters.get_user_authorizations, user)
return AuthorizationSet(auths)

async def create_table(self, table: str, version_iter: bool = True, time_type: Types.T_TIME_TYPE = TimeType.MILLIS):
await self.proxy_connection_pool_executor.run(AccumuloProxyClientFunctionGetters.create_table, self.login,
await self.proxy_connection_pool_executor.run(AccumuloProxyClientFunctionGetters.create_table, self.shared_secret,
table, version_iter, time_type)

async def table_exists(self, table: str) -> bool:
return await self.proxy_connection_pool_executor.run(AccumuloProxyClientFunctionGetters.table_exists,
self.login, table)
self.shared_secret, table)


class AsyncAccumuloConnectorResource:
Expand Down Expand Up @@ -237,18 +237,12 @@ def __init__(self, proxy_connection_pool_executor: Optional[AsyncAccumuloConnect
proxy_connection_pool_executor = AsyncAccumuloConnectorPoolExecutor()
self.proxy_connection_pool_executor = proxy_connection_pool_executor

async def create_connector(self, user: str, password: str) -> AsyncAccumuloConnector:
login = await self.proxy_connection_pool_executor.run(AccumuloProxyClientFunctionGetters.login, user,
{'password': password})
return AsyncAccumuloConnector(self.proxy_connection_pool_executor, login)
async def create_connector(self, shared_secret: bytes) -> AsyncAccumuloConnector:
return AsyncAccumuloConnector(self.proxy_connection_pool_executor, shared_secret)


class AccumuloProxyClientFunctionGetters:

@staticmethod
def login(c: AccumuloProxy.Client):
return c.login

@staticmethod
def create_scanner(c: AccumuloProxy.Client):
return c.createScanner
Expand Down
27 changes: 13 additions & 14 deletions accumulo/core/client_sync.py
Original file line number Diff line number Diff line change
Expand Up @@ -15,54 +15,53 @@ def __init__(self, proxy_connection: Optional[AccumuloProxyConnection] = None):
proxy_connection = AccumuloProxyConnection()
self.proxy_connection = proxy_connection

def create_connector(self, user: str, auth: str):
login = self.proxy_connection.client.login(user, {'password': auth})
return AccumuloConnector(self.proxy_connection.client, login)
def create_connector(self, shared_secret: bytes):
return AccumuloConnector(self.proxy_connection.client, shared_secret)


class AccumuloConnector(AccumuloConnectorBase):

def __init__(self, proxy_client: AccumuloProxy.Client, login: bytes):
super().__init__(login)
def __init__(self, proxy_client: AccumuloProxy.Client, shared_secret: bytes):
super().__init__(shared_secret)
self.proxy_client = proxy_client

def create_scanner(self, table: str, opts: Optional[ScanOptions] = None):
if opts is None:
opts = ScanOptions()
opts = TTypeFactory.scan_options(opts)
return AccumuloScanner(self.proxy_client, self.login, self.proxy_client.createScanner(self.login, table, opts))
return AccumuloScanner(self.proxy_client, self.shared_secret, self.proxy_client.createScanner(self.shared_secret, table, opts))

def create_batch_scanner(self, table: str, opts: Optional[BatchScanOptions] = None):
if opts is None:
opts = BatchScanOptions()
opts = TTypeFactory.batch_scan_options(opts)
return AccumuloScanner(self.proxy_client, self.login, self.proxy_client.createBatchScanner(self.login, table,
return AccumuloScanner(self.proxy_client, self.shared_secret, self.proxy_client.createBatchScanner(self.shared_secret, table,
opts))

def create_writer(self, table: str, opts: Optional[WriterOptions] = None):
if opts is None:
opts = WriterOptions()
opts = TTypeFactory.writer_options(opts)
return AccumuloWriter(self.proxy_client, self.login, self.proxy_client.createWriter(self.login, table, opts))
return AccumuloWriter(self.proxy_client, self.shared_secret, self.proxy_client.createWriter(self.shared_secret, table, opts))

def change_user_authorizations(self, user: str, auths: Types.T_AUTHORIZATION_SET):
self.proxy_client.changeUserAuthorizations(self.login, user, auths)
self.proxy_client.changeUserAuthorizations(self.shared_secret, user, auths)

def get_user_authorizations(self, user: str) -> Types.T_AUTHORIZATION_SET:
return AuthorizationSet(self.proxy_client.getUserAuthorizations(self.login, user))
return AuthorizationSet(self.proxy_client.getUserAuthorizations(self.shared_secret, user))

def create_table(self, table: str, version_iter: bool = True, time_type: Types.T_TIME_TYPE = TimeType.MILLIS):
self.proxy_client.createTable(self.login, table, version_iter, time_type)
self.proxy_client.createTable(self.shared_secret, table, version_iter, time_type)

def table_exists(self, table: str) -> bool:
return self.proxy_client.tableExists(self.login, table)
return self.proxy_client.tableExists(self.shared_secret, table)


class AccumuloConnectorResource:

def __init__(self, client: AccumuloProxy.Client, login: bytes, resource_id: str):
def __init__(self, client: AccumuloProxy.Client, shared_secret: bytes, resource_id: str):
self.client = client
self.login = login
self.shared_secret = shared_secret
self.resource_id = resource_id

def close(self):
Expand Down
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