sqlite-utils/sqlite_utils/cli.py
2020-08-28 15:30:57 -07:00

988 lines
27 KiB
Python

import base64
import click
from click_default_group import DefaultGroup
from datetime import datetime
import hashlib
import pathlib
import sqlite_utils
from sqlite_utils.db import AlterError
import itertools
import json
import sys
import csv as csv_std
import tabulate
from .utils import sqlite3, decode_base64_values
VALID_COLUMN_TYPES = ("INTEGER", "TEXT", "FLOAT", "BLOB")
def output_options(fn):
for decorator in reversed(
(
click.option(
"--nl",
help="Output newline-delimited JSON",
is_flag=True,
default=False,
),
click.option(
"--arrays",
help="Output rows as arrays instead of objects",
is_flag=True,
default=False,
),
click.option("-c", "--csv", is_flag=True, help="Output CSV"),
click.option("--no-headers", is_flag=True, help="Omit CSV headers"),
click.option("-t", "--table", is_flag=True, help="Output as a table"),
click.option(
"-f",
"--fmt",
help="Table format - one of {}".format(
", ".join(tabulate.tabulate_formats)
),
default="simple",
),
click.option(
"--json-cols",
help="Detect JSON cols and output them as JSON, not escaped strings",
is_flag=True,
default=False,
),
)
):
fn = decorator(fn)
return fn
@click.group(cls=DefaultGroup, default="query", default_if_no_args=True)
@click.version_option()
def cli():
"Commands for interacting with a SQLite database"
pass
@cli.command()
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.option(
"--fts4", help="Just show FTS4 enabled tables", default=False, is_flag=True
)
@click.option(
"--fts5", help="Just show FTS5 enabled tables", default=False, is_flag=True
)
@click.option(
"--counts", help="Include row counts per table", default=False, is_flag=True
)
@output_options
@click.option(
"--columns",
help="Include list of columns for each table",
is_flag=True,
default=False,
)
@click.option(
"--schema",
help="Include schema for each table",
is_flag=True,
default=False,
)
def tables(
path,
fts4,
fts5,
counts,
nl,
arrays,
csv,
no_headers,
table,
fmt,
json_cols,
columns,
schema,
views=False,
):
"""List the tables in the database"""
db = sqlite_utils.Database(path)
headers = ["view" if views else "table"]
if counts:
headers.append("count")
if columns:
headers.append("columns")
if schema:
headers.append("schema")
def _iter():
if views:
items = db.view_names()
else:
items = db.table_names(fts4=fts4, fts5=fts5)
for name in items:
row = [name]
if counts:
row.append(db[name].count)
if columns:
cols = [c.name for c in db[name].columns]
if csv:
row.append("\n".join(cols))
else:
row.append(cols)
if schema:
row.append(db[name].schema)
yield row
if table:
print(tabulate.tabulate(_iter(), headers=headers, tablefmt=fmt))
elif csv:
writer = csv_std.writer(sys.stdout)
if not no_headers:
writer.writerow(headers)
for row in _iter():
writer.writerow(row)
else:
for line in output_rows(_iter(), headers, nl, arrays, json_cols):
click.echo(line)
@cli.command()
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.option(
"--counts", help="Include row counts per view", default=False, is_flag=True
)
@output_options
@click.option(
"--columns",
help="Include list of columns for each view",
is_flag=True,
default=False,
)
@click.option(
"--schema",
help="Include schema for each view",
is_flag=True,
default=False,
)
def views(
path,
counts,
nl,
arrays,
csv,
no_headers,
table,
fmt,
json_cols,
columns,
schema,
):
"""List the views in the database"""
tables.callback(
path=path,
fts4=False,
fts5=False,
counts=counts,
nl=nl,
arrays=arrays,
csv=csv,
no_headers=no_headers,
table=table,
fmt=fmt,
json_cols=json_cols,
columns=columns,
schema=schema,
views=True,
)
@cli.command()
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
def vacuum(path):
"""Run VACUUM against the database"""
sqlite_utils.Database(path).vacuum()
@cli.command()
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.option("--no-vacuum", help="Don't run VACUUM", default=False, is_flag=True)
def optimize(path, no_vacuum):
"""Optimize all FTS tables and then run VACUUM - should shrink the database file"""
db = sqlite_utils.Database(path)
tables = db.table_names(fts4=True) + db.table_names(fts5=True)
with db.conn:
for table in tables:
db[table].optimize()
if not no_vacuum:
db.vacuum()
@cli.command(name="add-column")
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("table")
@click.argument("col_name")
@click.argument(
"col_type",
type=click.Choice(
["integer", "float", "blob", "text", "INTEGER", "FLOAT", "BLOB", "TEXT"]
),
required=False,
)
@click.option(
"--fk", type=str, required=False, help="Table to reference as a foreign key"
)
@click.option(
"--fk-col",
type=str,
required=False,
help="Referenced column on that foreign key table - if omitted will automatically use the primary key",
)
@click.option(
"--not-null-default",
type=str,
required=False,
help="Add NOT NULL DEFAULT 'TEXT' constraint",
)
def add_column(path, table, col_name, col_type, fk, fk_col, not_null_default):
"Add a column to the specified table"
db = sqlite_utils.Database(path)
db[table].add_column(
col_name, col_type, fk=fk, fk_col=fk_col, not_null_default=not_null_default
)
@cli.command(name="add-foreign-key")
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("table")
@click.argument("column")
@click.argument("other_table", required=False)
@click.argument("other_column", required=False)
def add_foreign_key(path, table, column, other_table, other_column):
"""
Add a new foreign key constraint to an existing table. Example usage:
$ sqlite-utils add-foreign-key my.db books author_id authors id
WARNING: Could corrupt your database! Back up your database file first.
"""
db = sqlite_utils.Database(path)
try:
db[table].add_foreign_key(column, other_table, other_column)
except AlterError as e:
raise click.ClickException(e)
@cli.command(name="index-foreign-keys")
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
def index_foreign_keys(path):
"""
Ensure every foreign key column has an index on it.
"""
db = sqlite_utils.Database(path)
db.index_foreign_keys()
@cli.command(name="create-index")
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("table")
@click.argument("column", nargs=-1, required=True)
@click.option("--name", help="Explicit name for the new index")
@click.option("--unique", help="Make this a unique index", default=False, is_flag=True)
@click.option(
"--if-not-exists",
help="Ignore if index already exists",
default=False,
is_flag=True,
)
def create_index(path, table, column, name, unique, if_not_exists):
"Add an index to the specified table covering the specified columns"
db = sqlite_utils.Database(path)
db[table].create_index(
column, index_name=name, unique=unique, if_not_exists=if_not_exists
)
@cli.command(name="enable-fts")
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("table")
@click.argument("column", nargs=-1, required=True)
@click.option("--fts4", help="Use FTS4", default=False, is_flag=True)
@click.option("--fts5", help="Use FTS5", default=False, is_flag=True)
@click.option("--tokenize", help="Tokenizer to use, e.g. porter")
@click.option(
"--create-triggers",
help="Create triggers to update the FTS tables when the parent table changes.",
default=False,
is_flag=True,
)
def enable_fts(path, table, column, fts4, fts5, tokenize, create_triggers):
"Enable FTS for specific table and columns"
fts_version = "FTS5"
if fts4 and fts5:
click.echo("Can only use one of --fts4 or --fts5", err=True)
return
elif fts4:
fts_version = "FTS4"
db = sqlite_utils.Database(path)
db[table].enable_fts(
column,
fts_version=fts_version,
tokenize=tokenize,
create_triggers=create_triggers,
)
@cli.command(name="populate-fts")
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("table")
@click.argument("column", nargs=-1, required=True)
def populate_fts(path, table, column):
"Re-populate FTS for specific table and columns"
db = sqlite_utils.Database(path)
db[table].populate_fts(column)
@cli.command(name="disable-fts")
@click.argument(
"path",
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("table")
def disable_fts(path, table):
"Disable FTS for specific table"
db = sqlite_utils.Database(path)
db[table].disable_fts()
@cli.command(name="enable-wal")
@click.argument(
"path",
nargs=-1,
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
def enable_wal(path):
"Enable WAL for database files"
for path_ in path:
sqlite_utils.Database(path_).enable_wal()
@cli.command(name="disable-wal")
@click.argument(
"path",
nargs=-1,
type=click.Path(exists=True, file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
def disable_wal(path):
"Disable WAL for database files"
for path_ in path:
sqlite_utils.Database(path_).disable_wal()
def insert_upsert_options(fn):
for decorator in reversed(
(
click.argument(
"path",
type=click.Path(file_okay=True, dir_okay=False, allow_dash=False),
required=True,
),
click.argument("table"),
click.argument("json_file", type=click.File(), required=True),
click.option(
"--pk", help="Columns to use as the primary key, e.g. id", multiple=True
),
click.option("--nl", is_flag=True, help="Expect newline-delimited JSON"),
click.option("-c", "--csv", is_flag=True, help="Expect CSV"),
click.option("--tsv", is_flag=True, help="Expect TSV"),
click.option(
"--batch-size", type=int, default=100, help="Commit every X records"
),
click.option(
"--alter",
is_flag=True,
help="Alter existing table to add any missing columns",
),
click.option(
"--not-null",
multiple=True,
help="Columns that should be created as NOT NULL",
),
click.option(
"--default",
multiple=True,
type=(str, str),
help="Default value that should be set for a column",
),
)
):
fn = decorator(fn)
return fn
def insert_upsert_implementation(
path,
table,
json_file,
pk,
nl,
csv,
tsv,
batch_size,
alter,
upsert,
ignore=False,
replace=False,
truncate=False,
not_null=None,
default=None,
):
db = sqlite_utils.Database(path)
if (nl + csv + tsv) >= 2:
raise click.ClickException("Use just one of --nl, --csv or --tsv")
if pk and len(pk) == 1:
pk = pk[0]
if csv or tsv:
dialect = "excel-tab" if tsv else "excel"
reader = csv_std.reader(json_file, dialect=dialect)
headers = next(reader)
docs = (dict(zip(headers, row)) for row in reader)
elif nl:
docs = (json.loads(line) for line in json_file)
else:
docs = json.load(json_file)
if isinstance(docs, dict):
docs = [docs]
extra_kwargs = {"ignore": ignore, "replace": replace, "truncate": truncate}
if not_null:
extra_kwargs["not_null"] = set(not_null)
if default:
extra_kwargs["defaults"] = dict(default)
if upsert:
extra_kwargs["upsert"] = upsert
# Apply {"$base64": true, ...} decoding, if needed
docs = (decode_base64_values(doc) for doc in docs)
db[table].insert_all(
docs, pk=pk, batch_size=batch_size, alter=alter, **extra_kwargs
)
@cli.command()
@insert_upsert_options
@click.option(
"--ignore", is_flag=True, default=False, help="Ignore records if pk already exists"
)
@click.option(
"--replace",
is_flag=True,
default=False,
help="Replace records if pk already exists",
)
@click.option(
"--truncate",
is_flag=True,
default=False,
help="Truncate table before inserting records, if table already exists",
)
def insert(
path,
table,
json_file,
pk,
nl,
csv,
tsv,
batch_size,
alter,
ignore,
replace,
truncate,
not_null,
default,
):
"""
Insert records from JSON file into a table, creating the table if it
does not already exist.
Input should be a JSON array of objects, unless --nl or --csv is used.
"""
insert_upsert_implementation(
path,
table,
json_file,
pk,
nl,
csv,
tsv,
batch_size,
alter=alter,
upsert=False,
ignore=ignore,
replace=replace,
truncate=truncate,
not_null=not_null,
default=default,
)
@cli.command()
@insert_upsert_options
def upsert(
path, table, json_file, pk, nl, csv, tsv, batch_size, alter, not_null, default
):
"""
Upsert records based on their primary key. Works like 'insert' but if
an incoming record has a primary key that matches an existing record
the existing record will be updated.
"""
insert_upsert_implementation(
path,
table,
json_file,
pk,
nl,
csv,
tsv,
batch_size,
alter=alter,
upsert=True,
not_null=not_null,
default=default,
)
@cli.command(name="create-table")
@click.argument(
"path",
type=click.Path(file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("table")
@click.argument("columns", nargs=-1, required=True)
@click.option("--pk", help="Column to use as primary key")
@click.option(
"--not-null",
multiple=True,
help="Columns that should be created as NOT NULL",
)
@click.option(
"--default",
multiple=True,
type=(str, str),
help="Default value that should be set for a column",
)
@click.option(
"--fk",
multiple=True,
type=(str, str, str),
help="Column, other table, other column to set as a foreign key",
)
@click.option(
"--ignore",
is_flag=True,
help="If table already exists, do nothing",
)
@click.option(
"--replace",
is_flag=True,
help="If table already exists, replace it",
)
def create_table(path, table, columns, pk, not_null, default, fk, ignore, replace):
"Add an index to the specified table covering the specified columns"
db = sqlite_utils.Database(path)
if len(columns) % 2 == 1:
raise click.ClickException(
"columns must be an even number of 'name' 'type' pairs"
)
coltypes = {}
columns = list(columns)
while columns:
name = columns.pop(0)
ctype = columns.pop(0)
if ctype.upper() not in VALID_COLUMN_TYPES:
raise click.ClickException(
"column types must be one of {}".format(VALID_COLUMN_TYPES)
)
coltypes[name] = ctype.upper()
# Does table already exist?
if table in db.table_names():
if ignore:
return
elif replace:
db[table].drop()
else:
raise click.ClickException(
'Table "{}" already exists. Use --replace to delete and replace it.'.format(
table
)
)
db[table].create(
coltypes, pk=pk, not_null=not_null, defaults=dict(default), foreign_keys=fk
)
@cli.command(name="drop-table")
@click.argument(
"path",
type=click.Path(file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("table")
def drop_table(path, table):
"Drop the specified table"
db = sqlite_utils.Database(path)
if table in db.table_names():
db[table].drop()
else:
raise click.ClickException('Table "{}" does not exist'.format(table))
@cli.command(name="create-view")
@click.argument(
"path",
type=click.Path(file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("view")
@click.argument("select")
@click.option(
"--ignore",
is_flag=True,
help="If view already exists, do nothing",
)
@click.option(
"--replace",
is_flag=True,
help="If view already exists, replace it",
)
def create_view(path, view, select, ignore, replace):
"Create a view for the provided SELECT query"
db = sqlite_utils.Database(path)
# Does view already exist?
if view in db.view_names():
if ignore:
return
elif replace:
db[view].drop()
else:
raise click.ClickException(
'View "{}" already exists. Use --replace to delete and replace it.'.format(
view
)
)
db.create_view(view, select)
@cli.command(name="drop-view")
@click.argument(
"path",
type=click.Path(file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("view")
def drop_view(path, view):
"Drop the specified view"
db = sqlite_utils.Database(path)
if view in db.view_names():
db[view].drop()
else:
raise click.ClickException('View "{}" does not exist'.format(view))
@cli.command()
@click.argument(
"path",
type=click.Path(file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("sql")
@output_options
@click.option("-r", "--raw", is_flag=True, help="Raw output, first column of first row")
@click.option(
"-p",
"--param",
multiple=True,
type=(str, str),
help="Named :parameters for SQL query",
)
@click.option(
"--load-extension",
multiple=True,
help="SQLite extensions to load",
)
def query(
path,
sql,
nl,
arrays,
csv,
no_headers,
table,
fmt,
json_cols,
raw,
param,
load_extension,
):
"Execute SQL query and return the results as JSON"
db = sqlite_utils.Database(path)
if load_extension:
db.conn.enable_load_extension(True)
for ext in load_extension:
db.conn.load_extension(ext)
with db.conn:
cursor = db.conn.execute(sql, dict(param))
if cursor.description is None:
# This was an update/insert
headers = ["rows_affected"]
cursor = [[cursor.rowcount]]
else:
headers = [c[0] for c in cursor.description]
if raw:
data = cursor.fetchone()[0]
if isinstance(data, bytes):
sys.stdout.buffer.write(data)
else:
sys.stdout.write(str(data))
elif table:
print(tabulate.tabulate(list(cursor), headers=headers, tablefmt=fmt))
elif csv:
writer = csv_std.writer(sys.stdout)
if not no_headers:
writer.writerow(headers)
for row in cursor:
writer.writerow(row)
else:
for line in output_rows(cursor, headers, nl, arrays, json_cols):
click.echo(line)
@cli.command()
@click.argument(
"path",
type=click.Path(file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("dbtable")
@output_options
@click.pass_context
def rows(ctx, path, dbtable, nl, arrays, csv, no_headers, table, fmt, json_cols):
"Output all rows in the specified table"
ctx.invoke(
query,
path=path,
sql="select * from [{}]".format(dbtable),
nl=nl,
arrays=arrays,
csv=csv,
no_headers=no_headers,
table=table,
fmt=fmt,
json_cols=json_cols,
)
@cli.command(name="insert-files")
@click.argument(
"path",
type=click.Path(file_okay=True, dir_okay=False, allow_dash=False),
required=True,
)
@click.argument("table")
@click.argument(
"file_or_dir",
nargs=-1,
required=True,
type=click.Path(file_okay=True, dir_okay=True, allow_dash=True),
)
@click.option(
"-c",
"--column",
type=str,
multiple=True,
help="Column definitions for the table",
)
@click.option("--pk", type=str, help="Column to use as primary key")
@click.option("--alter", is_flag=True, help="Alter table to add missing columns")
@click.option("--replace", is_flag=True, help="Replace files with matching primary key")
@click.option("--upsert", is_flag=True, help="Upsert files with matching primary key")
@click.option("--name", type=str, help="File name to use")
def insert_files(path, table, file_or_dir, column, pk, alter, replace, upsert, name):
"""
Insert one or more files using BLOB columns in the specified table
Example usage:
\b
sqlite-utils insert-files pics.db images *.gif \\
-c name:name \\
-c content:content \\
-c content_hash:sha256 \\
-c created:ctime_iso \\
-c modified:mtime_iso \\
-c size:size \\
--pk name
"""
if not column:
column = ["path:path", "content:content", "size:size"]
if not pk:
pk = "path"
def yield_paths_and_relative_paths():
for f_or_d in file_or_dir:
path = pathlib.Path(f_or_d)
if f_or_d == "-":
yield "-", "-"
elif path.is_dir():
for subpath in path.rglob("*"):
if subpath.is_file():
yield subpath, subpath.relative_to(path)
elif path.is_file():
yield path, path
# Load all paths so we can show a progress bar
paths_and_relative_paths = list(yield_paths_and_relative_paths())
with click.progressbar(paths_and_relative_paths) as bar:
def to_insert():
for path, relative_path in bar:
row = {}
lookups = FILE_COLUMNS
if path == "-":
stdin_data = sys.stdin.buffer.read()
# We only support a subset of columns for this case
lookups = {
"name": lambda p: name or "-",
"path": lambda p: name or "-",
"content": lambda p: stdin_data,
"sha256": lambda p: hashlib.sha256(stdin_data).hexdigest(),
"md5": lambda p: hashlib.md5(stdin_data).hexdigest(),
"size": lambda p: len(stdin_data),
}
for coldef in column:
if ":" in coldef:
colname, coltype = coldef.rsplit(":", 1)
else:
colname, coltype = coldef, coldef
try:
value = lookups[coltype](path)
row[colname] = value
except KeyError:
raise click.ClickException(
"'{}' is not a valid column definition - options are {}".format(
coltype, ", ".join(lookups.keys())
)
)
# Special case for --name
if coltype == "name" and name:
row[colname] = name
yield row
db = sqlite_utils.Database(path)
with db.conn:
db[table].insert_all(
to_insert(), pk=pk, alter=alter, replace=replace, upsert=upsert
)
FILE_COLUMNS = {
"name": lambda p: p.name,
"path": lambda p: str(p),
"fullpath": lambda p: str(p.resolve()),
"sha256": lambda p: hashlib.sha256(p.resolve().read_bytes()).hexdigest(),
"md5": lambda p: hashlib.md5(p.resolve().read_bytes()).hexdigest(),
"mode": lambda p: p.stat().st_mode,
"content": lambda p: p.resolve().read_bytes(),
"mtime": lambda p: p.stat().st_mtime,
"ctime": lambda p: p.stat().st_ctime,
"mtime_int": lambda p: int(p.stat().st_mtime),
"ctime_int": lambda p: int(p.stat().st_ctime),
"mtime_iso": lambda p: datetime.utcfromtimestamp(p.stat().st_mtime).isoformat(),
"ctime_iso": lambda p: datetime.utcfromtimestamp(p.stat().st_ctime).isoformat(),
"size": lambda p: p.stat().st_size,
}
def output_rows(iterator, headers, nl, arrays, json_cols):
# We have to iterate two-at-a-time so we can know if we
# should output a trailing comma or if we have reached
# the last row.
current_iter, next_iter = itertools.tee(iterator, 2)
next(next_iter, None)
first = True
for row, next_row in itertools.zip_longest(current_iter, next_iter):
is_last = next_row is None
data = row
if json_cols:
# Any value that is a valid JSON string should be treated as JSON
data = [maybe_json(value) for value in data]
if not arrays:
data = dict(zip(headers, data))
line = "{firstchar}{serialized}{maybecomma}{lastchar}".format(
firstchar=("[" if first else " ") if not nl else "",
serialized=json.dumps(data, default=json_binary),
maybecomma="," if (not nl and not is_last) else "",
lastchar="]" if (is_last and not nl) else "",
)
yield line
first = False
def maybe_json(value):
if not isinstance(value, str):
return value
stripped = value.strip()
if not (stripped.startswith("{") or stripped.startswith("[")):
return value
try:
return json.loads(stripped)
except ValueError:
return value
def json_binary(value):
if isinstance(value, bytes):
return {"$base64": True, "encoded": base64.b64encode(value).decode("latin-1")}
else:
raise TypeError