Skip to content

S3

S3Reader #

Bases: BasePydanticReader, ResourcesReaderMixin, FileSystemReaderMixin

General reader for any S3 file or directory.

If key is not set, the entire bucket (filtered by prefix) is parsed.

Args: bucket (str): the name of your S3 bucket key (Optional[str]): the name of the specific file. If none is provided, this loader will iterate through the entire bucket. prefix (Optional[str]): the prefix to filter by in the case that the loader iterates through the entire bucket. Defaults to empty string. recursive (bool): Whether to recursively search in subdirectories. True by default. file_extractor (Optional[Dict[str, BaseReader]]): A mapping of file extension to a BaseReader class that specifies how to convert that file to text. See SimpleDirectoryReader for more details. required_exts (Optional[List[str]]): List of required extensions. Default is None. num_files_limit (Optional[int]): Maximum number of files to read. Default is None. file_metadata (Optional[Callable[str, Dict]]): A function that takes in a filename and returns a Dict of metadata for the Document. Default is None. aws_access_id (Optional[str]): provide AWS access key directly. aws_access_secret (Optional[str]): provide AWS access key directly. s3_endpoint_url (Optional[str]): provide S3 endpoint URL directly.

Source code in llama-index-integrations/readers/llama-index-readers-s3/llama_index/readers/s3/base.py 
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
class S3Reader(BasePydanticReader, ResourcesReaderMixin, FileSystemReaderMixin):
    """
    General reader for any S3 file or directory.

    If key is not set, the entire bucket (filtered by prefix) is parsed.

    Args:
    bucket (str): the name of your S3 bucket
    key (Optional[str]): the name of the specific file. If none is provided,
        this loader will iterate through the entire bucket.
    prefix (Optional[str]): the prefix to filter by in the case that the loader
        iterates through the entire bucket. Defaults to empty string.
    recursive (bool): Whether to recursively search in subdirectories.
        True by default.
    file_extractor (Optional[Dict[str, BaseReader]]): A mapping of file
        extension to a BaseReader class that specifies how to convert that file
        to text. See `SimpleDirectoryReader` for more details.
    required_exts (Optional[List[str]]): List of required extensions.
        Default is None.
    num_files_limit (Optional[int]): Maximum number of files to read.
        Default is None.
    file_metadata (Optional[Callable[str, Dict]]): A function that takes
        in a filename and returns a Dict of metadata for the Document.
        Default is None.
    aws_access_id (Optional[str]): provide AWS access key directly.
    aws_access_secret (Optional[str]): provide AWS access key directly.
    s3_endpoint_url (Optional[str]): provide S3 endpoint URL directly.
    """

    is_remote: bool = True

    bucket: str
    key: Optional[str] = None
    prefix: Optional[str] = ""
    recursive: bool = True
    file_extractor: Optional[Dict[str, Union[str, BaseReader]]] = Field(
        default=None, exclude=True
    )
    required_exts: Optional[List[str]] = None
    filename_as_id: bool = True
    num_files_limit: Optional[int] = None
    file_metadata: Optional[Callable[[str], Dict]] = Field(default=None, exclude=True)
    aws_access_id: Optional[str] = None
    aws_access_secret: Optional[str] = None
    aws_session_token: Optional[str] = None
    s3_endpoint_url: Optional[str] = None
    custom_reader_path: Optional[str] = None

    @classmethod
    def class_name(cls) -> str:
        return "S3Reader"

    def _get_s3fs(self):
        from s3fs import S3FileSystem

        return S3FileSystem(
            key=self.aws_access_id,
            endpoint_url=self.s3_endpoint_url,
            secret=self.aws_access_secret,
            token=self.aws_session_token,
        )

    def _get_simple_directory_reader(self) -> SimpleDirectoryReader:
        # we don't want to keep the reader as a field in the class to keep it serializable
        s3fs = self._get_s3fs()

        input_dir = self.bucket
        input_files = None

        if self.key:
            input_files = [f"{self.bucket}/{self.key}"]
        elif self.prefix:
            input_dir = f"{input_dir}/{self.prefix}"

        return SimpleDirectoryReader(
            input_dir=input_dir,
            input_files=input_files,
            file_extractor=self.file_extractor,
            required_exts=self.required_exts,
            filename_as_id=self.filename_as_id,
            num_files_limit=self.num_files_limit,
            file_metadata=self.file_metadata,
            recursive=self.recursive,
            fs=s3fs,
        )

    def load_s3_files_as_docs(self, temp_dir=None) -> List[Document]:
        """Load file(s) from S3."""
        loader = self._get_simple_directory_reader()
        return loader.load_data()

    def _adjust_documents(self, documents: List[Document]) -> List[Document]:
        for doc in documents:
            if self.s3_endpoint_url:
                doc.id_ = self.s3_endpoint_url + "_" + doc.id_
            else:
                doc.id_ = "s3_" + doc.id_
        return documents

    def load_data(self, custom_temp_subdir: str = None) -> List[Document]:
        """
        Load the file(s) from S3.

        Args:
            custom_temp_subdir (str, optional): This parameter is deprecated and unused. Defaults to None.

        Returns:
            List[Document]: A list of documents loaded from S3.
        """
        if custom_temp_subdir is not None:
            warnings.warn(
                "The `custom_temp_subdir` parameter is deprecated and unused. Please remove it from your code.",
                DeprecationWarning,
            )

        documents = self.load_s3_files_as_docs()
        return self._adjust_documents(documents)

    def list_resources(self, **kwargs) -> List[str]:
        simple_directory_reader = self._get_simple_directory_reader()
        return simple_directory_reader.list_resources(**kwargs)

    def get_resource_info(self, resource_id: str, **kwargs) -> Dict:
        # can't use SimpleDirectoryReader.get_resource_info because it lacks some fields
        fs = self._get_s3fs()
        info_result = fs.info(resource_id)

        last_modified_date = info_result.get("LastModified")
        if last_modified_date and isinstance(last_modified_date, datetime):
            last_modified_date = last_modified_date.astimezone(timezone.utc).strftime(
                "%Y-%m-%dT%H:%M:%SZ"
            )
        else:
            last_modified_date = None

        info_dict = {
            "file_path": str(resource_id),
            "file_size": info_result.get("size"),
            "last_modified_date": last_modified_date,
            "content_hash": info_result.get("ETag"),
        }

        # Ignore None values
        return {
            meta_key: meta_value
            for meta_key, meta_value in info_dict.items()
            if meta_value is not None
        }

    def load_resource(self, resource_id: str, **kwargs) -> List[Document]:
        simple_directory_reader = self._get_simple_directory_reader()
        docs = simple_directory_reader.load_resource(resource_id, **kwargs)
        return self._adjust_documents(docs)

    def read_file_content(self, input_file: Path, **kwargs) -> bytes:
        simple_directory_reader = self._get_simple_directory_reader()
        return simple_directory_reader.read_file_content(input_file, **kwargs)

load_s3_files_as_docs #

load_s3_files_as_docs(temp_dir=None) -> List[Document]

Load file(s) from S3.

Source code in llama-index-integrations/readers/llama-index-readers-s3/llama_index/readers/s3/base.py 
109
110
111
112
def load_s3_files_as_docs(self, temp_dir=None) -> List[Document]:
    """Load file(s) from S3."""
    loader = self._get_simple_directory_reader()
    return loader.load_data()

load_data #

load_data(custom_temp_subdir: str = None) -> List[Document]

Load the file(s) from S3.

Parameters:

Name Type Description Default
custom_temp_subdir str

This parameter is deprecated and unused. Defaults to None.

 None

Returns:

Type Description
List[Document]

List[Document]: A list of documents loaded from S3.
Source code in llama-index-integrations/readers/llama-index-readers-s3/llama_index/readers/s3/base.py 
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
def load_data(self, custom_temp_subdir: str = None) -> List[Document]:
    """
    Load the file(s) from S3.

    Args:
        custom_temp_subdir (str, optional): This parameter is deprecated and unused. Defaults to None.

    Returns:
        List[Document]: A list of documents loaded from S3.
    """
    if custom_temp_subdir is not None:
        warnings.warn(
            "The `custom_temp_subdir` parameter is deprecated and unused. Please remove it from your code.",
            DeprecationWarning,
        )

    documents = self.load_s3_files_as_docs()
    return self._adjust_documents(documents)