1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 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
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

use crate::{FunctionArguments, FunctionRuntime, OutputsTags};
use serde::{Deserialize, Serialize};
use std::collections::HashSet;
use std::convert::TryInto;
use std::io;
use std::prelude::v1::*;

pub trait TeaclaveRuntime {
    fn open_input(&self, identifier: &str) -> anyhow::Result<Box<dyn io::Read>>;
    fn create_output(&self, identifier: &str) -> anyhow::Result<Box<dyn io::Write>>;
}

pub trait TeaclaveExecutor {
    fn execute(
        &self,
        name: String,
        arguments: FunctionArguments,
        payload: String,
        runtime: FunctionRuntime,
    ) -> anyhow::Result<String>;
}

#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Deserialize, Serialize)]
pub enum ExecutorType {
    Builtin,
    Python,
}

impl std::default::Default for ExecutorType {
    fn default() -> Self {
        ExecutorType::Builtin
    }
}

impl std::convert::TryFrom<&str> for ExecutorType {
    type Error = anyhow::Error;

    fn try_from(selector: &str) -> anyhow::Result<Self> {
        let executor_type = match selector {
            "python" => ExecutorType::Python,
            "builtin" => ExecutorType::Builtin,
            _ => anyhow::bail!("Invalid executor type: {}", selector),
        };
        Ok(executor_type)
    }
}

impl std::convert::TryFrom<String> for ExecutorType {
    type Error = anyhow::Error;

    fn try_from(selector: String) -> anyhow::Result<Self> {
        selector.as_str().try_into()
    }
}

impl std::convert::From<ExecutorType> for String {
    fn from(executor_type: ExecutorType) -> String {
        format!("{}", executor_type)
    }
}

impl std::fmt::Display for ExecutorType {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            ExecutorType::Builtin => write!(f, "builtin"),
            ExecutorType::Python => write!(f, "python"),
        }
    }
}

#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Deserialize, Serialize)]
pub enum Executor {
    MesaPy,
    Builtin,
}

impl std::default::Default for Executor {
    fn default() -> Self {
        Executor::MesaPy
    }
}

impl std::convert::TryFrom<&str> for Executor {
    type Error = anyhow::Error;

    fn try_from(selector: &str) -> anyhow::Result<Self> {
        let executor = match selector {
            "mesapy" => Executor::MesaPy,
            "builtin" => Executor::Builtin,
            _ => anyhow::bail!("Unsupported executor: {}", selector),
        };
        Ok(executor)
    }
}

impl std::convert::TryFrom<String> for Executor {
    type Error = anyhow::Error;

    fn try_from(selector: String) -> anyhow::Result<Self> {
        selector.as_str().try_into()
    }
}

impl std::fmt::Display for Executor {
    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
        match self {
            Executor::MesaPy => write!(f, "mesapy"),
            Executor::Builtin => write!(f, "builtin"),
        }
    }
}

#[derive(Debug)]
pub struct WorkerCapability {
    pub runtimes: HashSet<String>,
    pub executors: HashSet<String>,
}

#[derive(Debug, Default)]
pub struct ExecutionResult {
    pub return_value: Vec<u8>,
    pub tags_map: OutputsTags,
}

#[cfg(feature = "enclave_unit_test")]
pub mod tests {
    use super::*;

    pub fn run_tests() -> bool {
        true
    }
}