1 | /* Copyright 2016 The TensorFlow Authors. All Rights Reserved. |
2 | |
3 | Licensed under the Apache License, Version 2.0 (the "License"); |
4 | you may not use this file except in compliance with the License. |
5 | You may obtain a copy of the License at |
6 | |
7 | http://www.apache.org/licenses/LICENSE-2.0 |
8 | |
9 | Unless required by applicable law or agreed to in writing, software |
10 | distributed under the License is distributed on an "AS IS" BASIS, |
11 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
12 | See the License for the specific language governing permissions and |
13 | limitations under the License. |
14 | ==============================================================================*/ |
15 | |
16 | #include "tensorflow/tsl/util/env_var.h" |
17 | |
18 | #include <stdlib.h> |
19 | |
20 | #include "tensorflow/tsl/platform/errors.h" |
21 | #include "tensorflow/tsl/platform/logging.h" |
22 | #include "tensorflow/tsl/platform/numbers.h" |
23 | #include "tensorflow/tsl/platform/str_util.h" |
24 | #include "tensorflow/tsl/platform/strcat.h" |
25 | |
26 | namespace tsl { |
27 | |
28 | Status ReadBoolFromEnvVar(StringPiece env_var_name, bool default_val, |
29 | bool* value) { |
30 | *value = default_val; |
31 | const char* tf_env_var_val = getenv(string(env_var_name).c_str()); |
32 | if (tf_env_var_val == nullptr) { |
33 | return OkStatus(); |
34 | } |
35 | string str_value = absl::AsciiStrToLower(tf_env_var_val); |
36 | if (str_value == "0" || str_value == "false" ) { |
37 | *value = false; |
38 | return OkStatus(); |
39 | } else if (str_value == "1" || str_value == "true" ) { |
40 | *value = true; |
41 | return OkStatus(); |
42 | } |
43 | return errors::InvalidArgument(strings::StrCat( |
44 | "Failed to parse the env-var ${" , env_var_name, "} into bool: " , |
45 | tf_env_var_val, ". Use the default value: " , default_val)); |
46 | } |
47 | |
48 | Status ReadInt64FromEnvVar(StringPiece env_var_name, int64_t default_val, |
49 | int64_t* value) { |
50 | *value = default_val; |
51 | const char* tf_env_var_val = getenv(string(env_var_name).c_str()); |
52 | if (tf_env_var_val == nullptr) { |
53 | return OkStatus(); |
54 | } |
55 | if (strings::safe_strto64(tf_env_var_val, value)) { |
56 | return OkStatus(); |
57 | } |
58 | return errors::InvalidArgument(strings::StrCat( |
59 | "Failed to parse the env-var ${" , env_var_name, "} into int64: " , |
60 | tf_env_var_val, ". Use the default value: " , default_val)); |
61 | } |
62 | |
63 | Status ReadFloatFromEnvVar(StringPiece env_var_name, float default_val, |
64 | float* value) { |
65 | *value = default_val; |
66 | const char* tf_env_var_val = getenv(string(env_var_name).c_str()); |
67 | if (tf_env_var_val == nullptr) { |
68 | return OkStatus(); |
69 | } |
70 | if (strings::safe_strtof(tf_env_var_val, value)) { |
71 | return OkStatus(); |
72 | } |
73 | return errors::InvalidArgument(strings::StrCat( |
74 | "Failed to parse the env-var ${" , env_var_name, "} into float: " , |
75 | tf_env_var_val, ". Use the default value: " , default_val)); |
76 | } |
77 | |
78 | Status ReadStringFromEnvVar(StringPiece env_var_name, StringPiece default_val, |
79 | string* value) { |
80 | const char* tf_env_var_val = getenv(string(env_var_name).c_str()); |
81 | if (tf_env_var_val != nullptr) { |
82 | *value = tf_env_var_val; |
83 | } else { |
84 | *value = string(default_val); |
85 | } |
86 | return OkStatus(); |
87 | } |
88 | |
89 | Status ReadStringsFromEnvVar(StringPiece env_var_name, StringPiece default_val, |
90 | std::vector<string>* value) { |
91 | string str_val; |
92 | TF_RETURN_IF_ERROR(ReadStringFromEnvVar(env_var_name, default_val, &str_val)); |
93 | *value = str_util::Split(str_val, ','); |
94 | return OkStatus(); |
95 | } |
96 | |
97 | } // namespace tsl |
98 | |