muse2/input/
asset.rs

1//! Code for reading [`Asset`]s from a CSV file.
2use super::{input_err_msg, read_csv_optional};
3use crate::agent::AgentID;
4use crate::asset::Asset;
5use crate::id::IDCollection;
6use crate::process::ProcessMap;
7use crate::region::RegionID;
8use crate::units::Capacity;
9use anyhow::{Context, Result, ensure};
10use float_cmp::approx_eq;
11use indexmap::IndexSet;
12use itertools::Itertools;
13use log::warn;
14use serde::Deserialize;
15use std::path::Path;
16use std::rc::Rc;
17
18const ASSETS_FILE_NAME: &str = "assets.csv";
19
20#[derive(Default, Deserialize, PartialEq)]
21struct AssetRaw {
22    process_id: String,
23    region_id: String,
24    agent_id: String,
25    capacity: Capacity,
26    commission_year: u32,
27    #[serde(default)]
28    max_decommission_year: Option<u32>,
29}
30
31/// Read assets CSV file from model directory.
32///
33/// # Arguments
34///
35/// * `model_dir` - Folder containing model configuration files
36/// * `agent_ids` - All possible agent IDs
37/// * `processes` - The model's processes
38/// * `region_ids` - All possible region IDs
39///
40/// # Returns
41///
42/// A `Vec` of [`Asset`]s or an error.
43pub fn read_assets(
44    model_dir: &Path,
45    agent_ids: &IndexSet<AgentID>,
46    processes: &ProcessMap,
47    region_ids: &IndexSet<RegionID>,
48) -> Result<Vec<Asset>> {
49    let file_path = model_dir.join(ASSETS_FILE_NAME);
50    let assets_csv = read_csv_optional(&file_path)?;
51    read_assets_from_iter(assets_csv, agent_ids, processes, region_ids)
52        .with_context(|| input_err_msg(&file_path))
53}
54
55/// Process assets from an iterator.
56///
57/// # Arguments
58///
59/// * `iter` - Iterator of `AssetRaw`s
60/// * `agent_ids` - All possible agent IDs
61/// * `processes` - The model's processes
62/// * `region_ids` - All possible region IDs
63///
64/// # Returns
65///
66/// A [`Vec`] of [`Asset`]s or an error.
67fn read_assets_from_iter<I>(
68    iter: I,
69    agent_ids: &IndexSet<AgentID>,
70    processes: &ProcessMap,
71    region_ids: &IndexSet<RegionID>,
72) -> Result<Vec<Asset>>
73where
74    I: Iterator<Item = AssetRaw>,
75{
76    iter.map(|asset| -> Result<_> {
77        let agent_id = agent_ids.get_id(&asset.agent_id)?;
78        let process = processes
79            .get(asset.process_id.as_str())
80            .with_context(|| format!("Invalid process ID: {}", &asset.process_id))?;
81        let region_id = region_ids.get_id(&asset.region_id)?;
82
83        // Validate commission year. It should be within the process valid range...
84        ensure!(
85            process.years.contains(&asset.commission_year),
86            "Agent {} has asset with commission year {}, not within process {} commission years: {:?}",
87            asset.agent_id,
88            asset.commission_year,
89            asset.process_id,
90            process.years
91        );
92        // ... and also have associated process parameters and flows
93        ensure!(
94            process.parameters.contains_key(&(region_id.clone(), asset.commission_year)),
95            "Parameters for process {} do not contain entry for year {}, required for asset in agent {}",
96            asset.process_id,
97            asset.commission_year,
98            asset.agent_id,
99        );
100        ensure!(
101            process.flows.contains_key(&(region_id.clone(), asset.commission_year)),
102            "Flows for process {} do not contain entry for year {}, required for asset in agent {}",
103            asset.process_id,
104            asset.commission_year,
105            asset.agent_id,
106        );
107
108        // Check that capacity is approximately a multiple of the process unit size
109        // If not, raise a warning
110        if let Some(unit_size) = process.unit_size {
111            let ratio = (asset.capacity / unit_size).value();
112            if !approx_eq!(f64, ratio, ratio.ceil()) {
113                let n_units = ratio.ceil();
114                warn!(
115                    "Asset capacity {} for process {} is not a multiple of unit size {}. \
116                     Asset will be divided into {} units with combined capacity of {}.",
117                    asset.capacity,
118                    asset.process_id,
119                    unit_size,
120                    n_units,
121                    unit_size.value() * n_units
122                );
123            }
124        }
125
126        Asset::new_future_with_max_decommission(
127            agent_id.clone(),
128            Rc::clone(process),
129            region_id.clone(),
130            asset.capacity,
131            asset.commission_year,
132            asset.max_decommission_year,
133        )
134    })
135    .try_collect()
136}
137
138#[cfg(test)]
139mod tests {
140    use super::*;
141    use crate::fixture::{processes, region_ids};
142
143    use itertools::assert_equal;
144    use rstest::{fixture, rstest};
145    use std::iter;
146
147    #[fixture]
148    fn agent_ids() -> IndexSet<AgentID> {
149        IndexSet::from(["agent1".into()])
150    }
151
152    #[rstest]
153    #[case::max_decommission_year_provided(Some(2015))]
154    #[case::max_decommission_year_not_provided(None)]
155    fn read_assets_from_iter_valid(
156        #[case] max_decommission_year: Option<u32>,
157        agent_ids: IndexSet<AgentID>,
158        processes: ProcessMap,
159        region_ids: IndexSet<RegionID>,
160    ) {
161        let asset_in = AssetRaw {
162            agent_id: "agent1".into(),
163            process_id: "process1".into(),
164            region_id: "GBR".into(),
165            capacity: Capacity(1.0),
166            commission_year: 2010,
167            max_decommission_year,
168        };
169        let asset_out = Asset::new_future_with_max_decommission(
170            "agent1".into(),
171            Rc::clone(processes.values().next().unwrap()),
172            "GBR".into(),
173            Capacity(1.0),
174            2010,
175            max_decommission_year,
176        )
177        .unwrap();
178        assert_equal(
179            read_assets_from_iter(iter::once(asset_in), &agent_ids, &processes, &region_ids)
180                .unwrap(),
181            iter::once(asset_out),
182        );
183    }
184
185    #[rstest]
186    #[case(AssetRaw { // Bad process ID
187            agent_id: "agent1".into(),
188            process_id: "process2".into(),
189            region_id: "GBR".into(),
190            capacity: Capacity(1.0),
191            commission_year: 2010,
192            max_decommission_year: None,
193        })]
194    #[case(AssetRaw { // Bad agent ID
195            agent_id: "agent2".into(),
196            process_id: "process1".into(),
197            region_id: "GBR".into(),
198            capacity: Capacity(1.0),
199            commission_year: 2010,
200            max_decommission_year: None,
201        })]
202    #[case(AssetRaw { // Bad region ID: not in region_ids
203            agent_id: "agent1".into(),
204            process_id: "process1".into(),
205            region_id: "FRA".into(),
206            capacity: Capacity(1.0),
207            commission_year: 2010,
208            max_decommission_year: None,
209        })]
210    #[case(AssetRaw { // Bad max_decommission_year: before commission_year
211            agent_id: "agent1".into(),
212            process_id: "process1".into(),
213            region_id: "GBR".into(),
214            capacity: Capacity(1.0),
215            commission_year: 2010,
216            max_decommission_year: Some(2005),
217        })]
218    fn read_assets_from_iter_invalid(
219        #[case] asset: AssetRaw,
220        agent_ids: IndexSet<AgentID>,
221        processes: ProcessMap,
222        region_ids: IndexSet<RegionID>,
223    ) {
224        read_assets_from_iter(iter::once(asset), &agent_ids, &processes, &region_ids).unwrap_err();
225    }
226}
muse2/input/asset.rs

muse2/input/
asset.rs
